andrewbranch / interop-test

ESM-CJS interop test

ESM-CJS Interop Test

View on GitHub

This project is forked from sokra/interop-test with the following changes:

• Many test cases / exporting modules removed
• TypeScript file extensions tested
• package.json "type": "module" tested
• Every test case is tested against every importing file variant
• Every runtime result is diffed against every other
• Added meta-analysis to answer high-level questions
• Added Bun, Parcel, Vite

Table of Contents

• Meta-analysis
  • Synthesizing default exports for CJS modules
• Results by runtime
  • node 20.3.1
    • .mjs
    • .js
    • .js with "type": "module"
  • bun 1.0.0
    • .mjs
    • .js
    • .js with "type": "module"
    • .mts
    • .ts
    • .ts with "type": "module"
  • babel 7.22.17
    • .mjs
    • .js
    • .js with "type": "module"
    • .mts
    • .ts
    • .ts with "type": "module"
  • webpack 5.88.2
    • .mjs
    • .js
    • .js with "type": "module"
    • .mts
    • .ts
    • .ts with "type": "module"
  • rollup 3.29.0
    • .mjs
    • .js
    • .js with "type": "module"
    • .mts
    • .ts
    • .ts with "type": "module"
  • esbuild 0.19.2
    • .mjs
    • .js
    • .js with "type": "module"
    • .mts
    • .ts
    • .ts with "type": "module"
  • parcel 2.0.0-nightly.1312
    • .mjs
    • .js
    • .js with "type": "module"
    • .mts
    • .ts
    • .ts with "type": "module"
  • vite 4.4.9
    • .mjs
    • .js
    • .js with "type": "module"
    • .mts
    • .ts
    • .ts with "type": "module"
• Results by exporting module
  • default-export.js
  • default-export-esModule.js
  • default-export-esm.js
  • default-export-esm.mjs
  • single-object-export.js
  • single-object-with-default-export.js
  • tla-esModule.js
  • tla-esm.js
  • tla-esm.mjs
• Results by import test case
  • import x
  • import().default
  • x = require()
  • await import() === require()
  • import * as x; x === await import()
• Differences

Meta-analysis

Synthesizing default exports for CJS modules

In Node, a default import of a CommonJS module always links to the module.exports object. In other words, a CJS module imported from ESM looks like [Module: null prototype] { default: (module.exports) }. This is sometimes called “synthesizing” a default export. Traditionally, bundlers and ESM-to-CJS transpilers have instead linked default imports to the module.exports.default property when there is also an exports.__esModule property (indicating that the module was transpiled from ESM). In other words, they selectively disable default export synthesis, whereas Node always enables it. This creates an inconsistency between how some imports behave in Node and how they behave in bundlers. Consequently, esbuild and Webpack adopt Node’s behavior and always synthesize default exports in files that Node would recognize as ESM—that is, files with an .mjs extension or "type": "module" in package.json. (So... they selectively disable their selective disabling of default export synthesis?)

This practice is Probably A Good Idea, but if it’s applied based on file extensions, it must be done for the equivalent TypeScript file extensions as well in order for TypeScript to reason about the behavior. My priorities are ordered as follows:

1. Consistency between JS and TS variants
2. Consistency between all bundlers (lol)
3. Default export synthesis for CJS modules imported from .mjs, .mts, and "type": "module"-scoped .js and .ts files for compatibility with Node
4. No default export synthesis for CJS modules with __esModule when imported from files that are not .mjs, .mts, or "type": "module"-scoped .js and .ts files

The following table summarizes data that can be found in the default-export-esModule.js table, and grades each bundler’s behavior against these priorities.

Legend
✅ / ❌	Satisfies / violates priority (3): Default synthesis in Node ESM files
👍 / 👎	Satisfies / violates priority (4): __esModule disables synthesis in non-Node-ESM files
❓	An error or totally unexpected behavior prohibits analysis
💙	Satisfies priority (1): TS consistency
🌟	Perfect score

	mjs	js-module	mts	ts-module	js	ts	Grade
bun	❌ Not synthesized	❌ Not synthesized	❌ Not synthesized	❌ Not synthesized	👍 Not synthesized	👍 Not synthesized	💙
babel	❌ Not synthesized	❌ Not synthesized	❌ Not synthesized	❌ Not synthesized	👍 Not synthesized	👍 Not synthesized	💙
webpack	✅ Synthesized	✅ Synthesized	❌ Not synthesized	❌ Not synthesized	👍 Not synthesized	👍 Not synthesized
rollup	❌ Not synthesized	❌ Not synthesized	❌ Not synthesized	❌ Not synthesized	👍 Not synthesized	👍 Not synthesized	💙
esbuild	✅ Synthesized	✅ Synthesized	✅ Synthesized	✅ Synthesized	👍 Not synthesized	👍 Not synthesized	💙 🌟
parcel	❌ Not synthesized	❌ Not synthesized	❌ Not synthesized	❌ Not synthesized	👍 Not synthesized	👍 Not synthesized	💙
vite	❌ Not synthesized	❌ Not synthesized	❌ Not synthesized	❌ Not synthesized	👍 Not synthesized	👍 Not synthesized	💙

Results by runtime

node (.mjs)

Versions:

• node@20.3.1

node (mjs)	import x import().default	x = require() await import() === require()	import * as x; x === await import()
default-export-esModule.js	{ [__esModule], default }	runtime error	true
default-export-esm.js tla-esModule.js tla-esm.js	syntax error	runtime error	syntax error
default-export-esm.mjs tla-esm.mjs	'default'	runtime error	true
default-export.js	{ default }	runtime error	true
single-object-export.js	{ named }	runtime error	true
single-object-with-default-export.js	{ named, default }	runtime error	true

node (.js)

Versions:

• node@20.3.1

node (js)	import x import().default import * as x; x === await import()	x = require()	await import() === require()
default-export-esModule.js	syntax error	{ [__esModule], default }	false
default-export-esm.js tla-esModule.js tla-esm.js	syntax error	syntax error	syntax error
default-export-esm.mjs tla-esm.mjs	syntax error	require(esm) not allowed	require(esm) not allowed
default-export.js	syntax error	{ default }	false
single-object-export.js	syntax error	{ named }	false
single-object-with-default-export.js	syntax error	{ named, default }	false

node (.js with "type": "module")

Versions:

• node@20.3.1

node (js-module)	import x import().default	x = require() await import() === require()	import * as x; x === await import()
default-export-esModule.js	{ [__esModule], default }	runtime error	true
default-export-esm.js tla-esModule.js tla-esm.js	syntax error	runtime error	syntax error
default-export-esm.mjs tla-esm.mjs	'default'	runtime error	true
default-export.js	{ default }	runtime error	true
single-object-export.js	{ named }	runtime error	true
single-object-with-default-export.js	{ named, default }	runtime error	true

bun (.mjs)

Versions:

• bun@1.0.0

bun (mjs)	import x	import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	'default'	'default'	{ [__esModule], default }	false	true
default-export-esm.js default-export-esm.mjs	'default'	'default'	{ [__esModule] }	false	true
default-export.js	{ default }	{ default }	{ default }	false	true
single-object-export.js	{ named }	{ named }	{ named }	false	true
single-object-with-default-export.js	{ named, default }	{ named, default }	{ named, default }	false	true
tla-esModule.js	syntax error	runtime error	syntax error	runtime error	runtime error
tla-esm.js tla-esm.mjs	'default'	'default'	type error	false	true

bun (.js)

Versions:

• bun@1.0.0

bun (js)	import x	import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	'default'	'default'	{ [__esModule], default }	false	true
default-export-esm.js default-export-esm.mjs	'default'	'default'	{ [__esModule] }	false	true
default-export.js	{ default }	{ default }	{ default }	false	true
single-object-export.js	{ named }	{ named }	{ named }	false	true
single-object-with-default-export.js	{ named, default }	{ named, default }	{ named, default }	false	true
tla-esModule.js	syntax error	runtime error	syntax error	runtime error	runtime error
tla-esm.js tla-esm.mjs	'default'	'default'	type error	false	true

bun (.js with "type": "module")

Versions:

• bun@1.0.0

bun (js-module)	import x	import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	'default'	'default'	{ [__esModule], default }	false	true
default-export-esm.js default-export-esm.mjs	'default'	'default'	{ [__esModule] }	false	true
default-export.js	{ default }	{ default }	{ default }	false	true
single-object-export.js	{ named }	{ named }	{ named }	false	true
single-object-with-default-export.js	{ named, default }	{ named, default }	{ named, default }	false	true
tla-esModule.js	syntax error	runtime error	syntax error	runtime error	runtime error
tla-esm.js tla-esm.mjs	'default'	'default'	type error	false	true

bun (.mts)

Versions:

• bun@1.0.0

bun (mts)	import x	import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	'default'	'default'	{ [__esModule], default }	false	true
default-export-esm.js default-export-esm.mjs	'default'	'default'	{ [__esModule] }	false	true
default-export.js	{ default }	{ default }	{ default }	false	true
single-object-export.js	{ named }	{ named }	{ named }	false	true
single-object-with-default-export.js	{ named, default }	{ named, default }	{ named, default }	false	true
tla-esModule.js	syntax error	runtime error	syntax error	runtime error	runtime error
tla-esm.js tla-esm.mjs	'default'	'default'	type error	false	true

bun (.ts)

Versions:

• bun@1.0.0

bun (ts)	import x	import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	'default'	'default'	{ [__esModule], default }	false	true
default-export-esm.js default-export-esm.mjs	'default'	'default'	{ [__esModule] }	false	true
default-export.js	{ default }	{ default }	{ default }	false	true
single-object-export.js	{ named }	{ named }	{ named }	false	true
single-object-with-default-export.js	{ named, default }	{ named, default }	{ named, default }	false	true
tla-esModule.js	syntax error	runtime error	syntax error	runtime error	runtime error
tla-esm.js tla-esm.mjs	'default'	'default'	type error	false	true

bun (.ts with "type": "module")

Versions:

• bun@1.0.0

bun (ts-module)	import x	import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	'default'	'default'	{ [__esModule], default }	false	true
default-export-esm.js default-export-esm.mjs	'default'	'default'	{ [__esModule] }	false	true
default-export.js	{ default }	{ default }	{ default }	false	true
single-object-export.js	{ named }	{ named }	{ named }	false	true
single-object-with-default-export.js	{ named, default }	{ named, default }	{ named, default }	false	true
tla-esModule.js	syntax error	runtime error	syntax error	runtime error	runtime error
tla-esm.js tla-esm.mjs	'default'	'default'	type error	false	true

babel (.mjs)

Versions:

• @babel/cli@7.22.15
• @babel/core@7.22.17
• @babel/plugin-transform-modules-commonjs@7.22.15
• babel-plugin-dynamic-import-node@2.3.3

babel (mjs)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	'default'	{ [__esModule], default }	true	true
default-export-esm.js default-export-esm.mjs tla-esModule.js tla-esm.js tla-esm.mjs	syntax error	syntax error	syntax error	syntax error
default-export.js	{ default }	{ default }	false	true
single-object-export.js	{ named }	{ named }	false	true
single-object-with-default-export.js	{ named, default }	{ named, default }	false	true

babel (.js)

Versions:

• @babel/cli@7.22.15
• @babel/core@7.22.17
• @babel/plugin-transform-modules-commonjs@7.22.15
• babel-plugin-dynamic-import-node@2.3.3

babel (js)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	'default'	{ [__esModule], default }	true	true
default-export-esm.js default-export-esm.mjs tla-esModule.js tla-esm.js tla-esm.mjs	syntax error	syntax error	syntax error	syntax error
default-export.js	{ default }	{ default }	false	true
single-object-export.js	{ named }	{ named }	false	true
single-object-with-default-export.js	{ named, default }	{ named, default }	false	true

babel (.js with "type": "module")

Versions:

• @babel/cli@7.22.15
• @babel/core@7.22.17
• @babel/plugin-transform-modules-commonjs@7.22.15
• babel-plugin-dynamic-import-node@2.3.3

babel (js-module)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	'default'	{ [__esModule], default }	true	true
default-export-esm.js default-export-esm.mjs tla-esModule.js tla-esm.js tla-esm.mjs	syntax error	syntax error	syntax error	syntax error
default-export.js	{ default }	{ default }	false	true
single-object-export.js	{ named }	{ named }	false	true
single-object-with-default-export.js	{ named, default }	{ named, default }	false	true

babel (.mts)

Versions:

• @babel/cli@7.22.15
• @babel/core@7.22.17
• @babel/plugin-transform-modules-commonjs@7.22.15
• babel-plugin-dynamic-import-node@2.3.3

babel (mts)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	'default'	{ [__esModule], default }	true	true
default-export-esm.js default-export-esm.mjs tla-esModule.js tla-esm.js tla-esm.mjs	syntax error	syntax error	syntax error	syntax error
default-export.js	{ default }	{ default }	false	true
single-object-export.js	{ named }	{ named }	false	true
single-object-with-default-export.js	{ named, default }	{ named, default }	false	true

babel (.ts)

Versions:

• @babel/cli@7.22.15
• @babel/core@7.22.17
• @babel/plugin-transform-modules-commonjs@7.22.15
• babel-plugin-dynamic-import-node@2.3.3

babel (ts)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	'default'	{ [__esModule], default }	true	true
default-export-esm.js default-export-esm.mjs tla-esModule.js tla-esm.js tla-esm.mjs	syntax error	syntax error	syntax error	syntax error
default-export.js	{ default }	{ default }	false	true
single-object-export.js	{ named }	{ named }	false	true
single-object-with-default-export.js	{ named, default }	{ named, default }	false	true

babel (.ts with "type": "module")

Versions:

• @babel/cli@7.22.15
• @babel/core@7.22.17
• @babel/plugin-transform-modules-commonjs@7.22.15
• babel-plugin-dynamic-import-node@2.3.3

babel (ts-module)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	'default'	{ [__esModule], default }	true	true
default-export-esm.js default-export-esm.mjs tla-esModule.js tla-esm.js tla-esm.mjs	syntax error	syntax error	syntax error	syntax error
default-export.js	{ default }	{ default }	false	true
single-object-export.js	{ named }	{ named }	false	true
single-object-with-default-export.js	{ named, default }	{ named, default }	false	true

webpack (.mjs)

Versions:

• webpack@5.88.2

webpack (mjs)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	{ [__esModule], default }	{ [__esModule], default }	false	false
default-export-esm.js tla-esm.js	'default'	syntax error	syntax error	true
default-export-esm.mjs tla-esm.mjs	'default'	require(esm) not allowed	require(esm) not allowed	true
default-export.js	{ default }	{ default }	false	false
single-object-export.js	{ named }	{ named }	false	false
single-object-with-default-export.js	{ named, default }	{ named, default }	false	false
tla-esModule.js	compilation error	syntax error	compilation error	compilation error

webpack (.js)

Versions:

• webpack@5.88.2

webpack (js)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	'default'	{ [__esModule], default }	true	true
default-export-esm.js default-export-esm.mjs	'default'	{ [__esModule], default: [G], [Module] }	true	true
default-export.js	{ default }	{ default }	false	false
single-object-export.js	{ named }	{ named }	false	false
single-object-with-default-export.js	{ named, default }	{ named, default }	false	false
tla-esModule.js	compilation error	compilation error	compilation error	compilation error
tla-esm.js tla-esm.mjs	'default'	Promise { { [__esModule], default: [G], named: [G], [Module] }, [Symbol(webpack exports)]: { [__esModule], default: [G], named: [G], [Module] }, [Symbol(webpack queues)]: { [Function (anonymous)] [length]: 1, [name]: '' } }	false	true

webpack (.js with "type": "module")

Versions:

• webpack@5.88.2

webpack (js-module)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	{ [__esModule], default }	{ [__esModule], default }	false	false
default-export-esm.js tla-esm.js	'default'	syntax error	syntax error	true
default-export-esm.mjs tla-esm.mjs	'default'	require(esm) not allowed	require(esm) not allowed	true
default-export.js	{ default }	{ default }	false	false
single-object-export.js	{ named }	{ named }	false	false
single-object-with-default-export.js	{ named, default }	{ named, default }	false	false
tla-esModule.js	compilation error	syntax error	compilation error	compilation error

webpack (.mts)

Versions:

• webpack@5.88.2

webpack (mts)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	'default'	{ [__esModule], default }	true	true
default-export-esm.js default-export-esm.mjs	'default'	{ [__esModule], default: [G], [Module] }	true	true
default-export.js	{ default }	{ default }	false	false
single-object-export.js	{ named }	{ named }	false	false
single-object-with-default-export.js	{ named, default }	{ named, default }	false	false
tla-esModule.js	compilation error	compilation error	compilation error	compilation error
tla-esm.js tla-esm.mjs	'default'	Promise { { [__esModule], default: [G], named: [G], [Module] }, [Symbol(webpack exports)]: { [__esModule], default: [G], named: [G], [Module] }, [Symbol(webpack queues)]: { [Function (anonymous)] [length]: 1, [name]: '' } }	false	true

webpack (.ts)

Versions:

• webpack@5.88.2

webpack (ts)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	'default'	{ [__esModule], default }	true	true
default-export-esm.js default-export-esm.mjs	'default'	{ [__esModule], default: [G], [Module] }	true	true
default-export.js	{ default }	{ default }	false	false
single-object-export.js	{ named }	{ named }	false	false
single-object-with-default-export.js	{ named, default }	{ named, default }	false	false
tla-esModule.js	compilation error	compilation error	compilation error	compilation error
tla-esm.js tla-esm.mjs	'default'	Promise { { [__esModule], default: [G], named: [G], [Module] }, [Symbol(webpack exports)]: { [__esModule], default: [G], named: [G], [Module] }, [Symbol(webpack queues)]: { [Function (anonymous)] [length]: 1, [name]: '' } }	false	true

webpack (.ts with "type": "module")

Versions:

• webpack@5.88.2

webpack (ts-module)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	'default'	{ [__esModule], default }	true	true
default-export-esm.js default-export-esm.mjs	'default'	{ [__esModule], default: [G], [Module] }	true	true
default-export.js	{ default }	{ default }	false	false
single-object-export.js	{ named }	{ named }	false	false
single-object-with-default-export.js	{ named, default }	{ named, default }	false	false
tla-esModule.js	compilation error	compilation error	compilation error	compilation error
tla-esm.js tla-esm.mjs	'default'	Promise { { [__esModule], default: [G], named: [G], [Module] }, [Symbol(webpack exports)]: { [__esModule], default: [G], named: [G], [Module] }, [Symbol(webpack queues)]: { [Function (anonymous)] [length]: 1, [name]: '' } }	false	true

rollup (.mjs)

Versions:

• @rollup/plugin-commonjs@25.0.4
• rollup@3.29.0

rollup (mjs)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	'default'	{ [__esModule], default }	false	true
default-export-esm.js	'default'	syntax error	syntax error	true
default-export-esm.mjs	'default'	require(esm) not allowed	require(esm) not allowed	true
default-export.js	{ default }	{ default }	false	true
single-object-export.js	{ named }	{ named }	false	true
single-object-with-default-export.js	{ named, default }	{ named, default }	false	true
tla-esModule.js tla-esm.js	compilation error	syntax error	compilation error	compilation error
tla-esm.mjs	compilation error	require(esm) not allowed	compilation error	compilation error

rollup (.js)

Versions:

• @rollup/plugin-commonjs@25.0.4
• rollup@3.29.0

rollup (js)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	'default'	{ [__esModule], default }	false	true
default-export-esm.js default-export-esm.mjs	'default'	{ [__esModule], default: [G] }	false	true
default-export.js	{ default }	{ default }	false	true
single-object-export.js	{ named }	{ named }	false	true
single-object-with-default-export.js	{ named, default }	{ named, default }	false	true
tla-esModule.js tla-esm.js tla-esm.mjs	compilation error	compilation error	compilation error	compilation error

rollup (.js with "type": "module")

Versions:

• @rollup/plugin-commonjs@25.0.4
• rollup@3.29.0

rollup (js-module)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	'default'	{ [__esModule], default }	false	true
default-export-esm.js default-export-esm.mjs	'default'	{ [__esModule], default: [G] }	false	true
default-export.js	{ default }	{ default }	false	true
single-object-export.js	{ named }	{ named }	false	true
single-object-with-default-export.js	{ named, default }	{ named, default }	false	true
tla-esModule.js tla-esm.js tla-esm.mjs	compilation error	compilation error	compilation error	compilation error

rollup (.mts)

Versions:

• @rollup/plugin-commonjs@25.0.4
• @rollup/plugin-typescript@11.1.3
• rollup@3.29.0
• tslib@2.6.2
• typescript@5.2.2

rollup (mts)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	'default'	{ [__esModule], default }	false	true
default-export-esm.js	'default'	syntax error	syntax error	true
default-export-esm.mjs	'default'	require(esm) not allowed	require(esm) not allowed	true
default-export.js	{ default }	{ default }	false	true
single-object-export.js	{ named }	{ named }	false	true
single-object-with-default-export.js	{ named, default }	{ named, default }	false	true
tla-esModule.js tla-esm.js	compilation error	syntax error	compilation error	compilation error
tla-esm.mjs	compilation error	require(esm) not allowed	compilation error	compilation error

rollup (.ts)

Versions:

• @rollup/plugin-commonjs@25.0.4
• @rollup/plugin-typescript@11.1.3
• rollup@3.29.0
• tslib@2.6.2
• typescript@5.2.2

rollup (ts)	import x	import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	'default'	'default'	{ [__esModule], default }	false	true
default-export-esm.js	syntax error	'default'	syntax error	syntax error	syntax error
default-export-esm.mjs	require(esm) not allowed	'default'	require(esm) not allowed	require(esm) not allowed	require(esm) not allowed
default-export.js	{ default }	{ default }	{ default }	false	false
single-object-export.js	{ named }	{ named }	{ named }	false	false
single-object-with-default-export.js	{ named, default }	{ named, default }	{ named, default }	false	false
tla-esModule.js tla-esm.js	syntax error	compilation error	syntax error	compilation error	compilation error
tla-esm.mjs	require(esm) not allowed	compilation error	require(esm) not allowed	compilation error	compilation error

rollup (.ts with "type": "module")

Versions:

• @rollup/plugin-commonjs@25.0.4
• @rollup/plugin-typescript@11.1.3
• rollup@3.29.0
• tslib@2.6.2
• typescript@5.2.2

rollup (ts-module)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	'default'	{ [__esModule], default }	false	true
default-export-esm.js	'default'	syntax error	syntax error	true
default-export-esm.mjs	'default'	require(esm) not allowed	require(esm) not allowed	true
default-export.js	{ default }	{ default }	false	true
single-object-export.js	{ named }	{ named }	false	true
single-object-with-default-export.js	{ named, default }	{ named, default }	false	true
tla-esModule.js tla-esm.js	compilation error	syntax error	compilation error	compilation error
tla-esm.mjs	compilation error	require(esm) not allowed	compilation error	compilation error

esbuild (.mjs)

Versions:

• esbuild@0.19.2

esbuild (mjs)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	{ [__esModule], default }	{ [__esModule], default }	false	false
default-export-esm.js default-export-esm.mjs	'default'	{ [__esModule], default: [G] }	false	true
default-export.js	{ default }	{ default }	false	false
single-object-export.js	{ named }	{ named }	false	false
single-object-with-default-export.js	{ named, default }	{ named, default }	false	false
tla-esModule.js tla-esm.js tla-esm.mjs	compilation error	compilation error	compilation error	compilation error

esbuild (.js)

Versions:

• esbuild@0.19.2

esbuild (js)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	'default'	{ [__esModule], default }	false	false
default-export-esm.js default-export-esm.mjs	'default'	{ [__esModule], default: [G] }	false	true
default-export.js	{ default }	{ default }	false	false
single-object-export.js	{ named }	{ named }	false	false
single-object-with-default-export.js	{ named, default }	{ named, default }	false	false
tla-esModule.js tla-esm.js tla-esm.mjs	compilation error	compilation error	compilation error	compilation error

esbuild (.js with "type": "module")

Versions:

• esbuild@0.19.2

esbuild (js-module)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	{ [__esModule], default }	{ [__esModule], default }	false	false
default-export-esm.js default-export-esm.mjs	'default'	{ [__esModule], default: [G] }	false	true
default-export.js	{ default }	{ default }	false	false
single-object-export.js	{ named }	{ named }	false	false
single-object-with-default-export.js	{ named, default }	{ named, default }	false	false
tla-esModule.js tla-esm.js tla-esm.mjs	compilation error	compilation error	compilation error	compilation error

esbuild (.mts)

Versions:

• esbuild@0.19.2

esbuild (mts)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	{ [__esModule], default }	{ [__esModule], default }	false	false
default-export-esm.js default-export-esm.mjs	'default'	{ [__esModule], default: [G] }	false	true
default-export.js	{ default }	{ default }	false	false
single-object-export.js	{ named }	{ named }	false	false
single-object-with-default-export.js	{ named, default }	{ named, default }	false	false
tla-esModule.js tla-esm.js tla-esm.mjs	compilation error	compilation error	compilation error	compilation error

esbuild (.ts)

Versions:

• esbuild@0.19.2

esbuild (ts)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	'default'	{ [__esModule], default }	false	false
default-export-esm.js default-export-esm.mjs	'default'	{ [__esModule], default: [G] }	false	true
default-export.js	{ default }	{ default }	false	false
single-object-export.js	{ named }	{ named }	false	false
single-object-with-default-export.js	{ named, default }	{ named, default }	false	false
tla-esModule.js tla-esm.js tla-esm.mjs	compilation error	compilation error	compilation error	compilation error

esbuild (.ts with "type": "module")

Versions:

• esbuild@0.19.2

esbuild (ts-module)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js	{ [__esModule], default }	{ [__esModule], default }	false	false
default-export-esm.js default-export-esm.mjs	'default'	{ [__esModule], default: [G] }	false	true
default-export.js	{ default }	{ default }	false	false
single-object-export.js	{ named }	{ named }	false	false
single-object-with-default-export.js	{ named, default }	{ named, default }	false	false
tla-esModule.js tla-esm.js tla-esm.mjs	compilation error	compilation error	compilation error	compilation error

parcel (.mjs)

Versions:

• @parcel/config-default@2.0.0-nightly.1314
• @parcel/core@2.0.0-nightly.1312

parcel (mjs)	import x	import().default	x = require()	await import() === require() import * as x; x === await import()
default-export-esModule.js default-export-esm.js default-export-esm.mjs	'default'	'default'	{ [__esModule], default }	true
default-export.js	{ default }	'default'	{ default }	true
single-object-export.js	{ named }	undefined	{ named }	true
single-object-with-default-export.js	{ named, default }	'default'	{ named, default }	true
tla-esModule.js tla-esm.js tla-esm.mjs	syntax error	syntax error	syntax error	syntax error

parcel (.js)

Versions:

• @parcel/config-default@2.0.0-nightly.1314
• @parcel/core@2.0.0-nightly.1312

parcel (js)	import x	import().default	x = require()	await import() === require() import * as x; x === await import()
default-export-esModule.js default-export-esm.js default-export-esm.mjs	'default'	'default'	{ [__esModule], default }	true
default-export.js	{ default }	'default'	{ default }	true
single-object-export.js	{ named }	undefined	{ named }	true
single-object-with-default-export.js	{ named, default }	'default'	{ named, default }	true
tla-esModule.js tla-esm.js tla-esm.mjs	syntax error	syntax error	syntax error	syntax error

parcel (.js with "type": "module")

Versions:

• @parcel/config-default@2.0.0-nightly.1314
• @parcel/core@2.0.0-nightly.1312

parcel (js-module)	import x	import().default	x = require()	await import() === require() import * as x; x === await import()
default-export-esModule.js default-export-esm.js default-export-esm.mjs	'default'	'default'	{ [__esModule], default }	true
default-export.js	{ default }	'default'	{ default }	true
single-object-export.js	{ named }	undefined	{ named }	true
single-object-with-default-export.js	{ named, default }	'default'	{ named, default }	true
tla-esModule.js tla-esm.js tla-esm.mjs	syntax error	syntax error	syntax error	syntax error

parcel (.mts)

Versions:

• @parcel/config-default@2.0.0-nightly.1314
• @parcel/core@2.0.0-nightly.1312

parcel (mts)	import x	import().default	x = require()	await import() === require() import * as x; x === await import()
default-export-esModule.js default-export-esm.js default-export-esm.mjs	'default'	'default'	{ [__esModule], default }	true
default-export.js	{ default }	'default'	{ default }	true
single-object-export.js	{ named }	undefined	{ named }	true
single-object-with-default-export.js	{ named, default }	'default'	{ named, default }	true
tla-esModule.js tla-esm.js tla-esm.mjs	syntax error	syntax error	syntax error	syntax error

parcel (.ts)

Versions:

• @parcel/config-default@2.0.0-nightly.1314
• @parcel/core@2.0.0-nightly.1312

parcel (ts)	import x	import().default	x = require()	await import() === require() import * as x; x === await import()
default-export-esModule.js default-export-esm.js default-export-esm.mjs	'default'	'default'	{ [__esModule], default }	true
default-export.js	{ default }	'default'	{ default }	true
single-object-export.js	{ named }	undefined	{ named }	true
single-object-with-default-export.js	{ named, default }	'default'	{ named, default }	true
tla-esModule.js tla-esm.js tla-esm.mjs	syntax error	syntax error	syntax error	syntax error

parcel (.ts with "type": "module")

Versions:

• @parcel/config-default@2.0.0-nightly.1314
• @parcel/core@2.0.0-nightly.1312

parcel (ts-module)	import x	import().default	x = require()	await import() === require() import * as x; x === await import()
default-export-esModule.js default-export-esm.js default-export-esm.mjs	'default'	'default'	{ [__esModule], default }	true
default-export.js	{ default }	'default'	{ default }	true
single-object-export.js	{ named }	undefined	{ named }	true
single-object-with-default-export.js	{ named, default }	'default'	{ named, default }	true
tla-esModule.js tla-esm.js tla-esm.mjs	syntax error	syntax error	syntax error	syntax error

vite (.mjs)

Versions:

• vite-plugin-externalize-deps@0.7.0
• vite@4.4.9

vite (mjs)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js default-export-esm.js default-export-esm.mjs	'default'	not fully bundled	not fully bundled	true
default-export.js	{ default }	not fully bundled	not fully bundled	true
single-object-export.js	{ named }	not fully bundled	not fully bundled	true
single-object-with-default-export.js	{ named, default }	not fully bundled	not fully bundled	true
tla-esModule.js tla-esm.js tla-esm.mjs	compilation error	not fully bundled	compilation error	compilation error

vite (.js)

Versions:

• vite-plugin-externalize-deps@0.7.0
• vite@4.4.9

vite (js)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js default-export-esm.js default-export-esm.mjs	'default'	not fully bundled	not fully bundled	true
default-export.js	{ default }	not fully bundled	not fully bundled	true
single-object-export.js	{ named }	not fully bundled	not fully bundled	true
single-object-with-default-export.js	{ named, default }	not fully bundled	not fully bundled	true
tla-esModule.js tla-esm.js tla-esm.mjs	compilation error	not fully bundled	compilation error	compilation error

vite (.js with "type": "module")

Versions:

• vite-plugin-externalize-deps@0.7.0
• vite@4.4.9

vite (js-module)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js default-export-esm.js default-export-esm.mjs	'default'	not fully bundled	not fully bundled	true
default-export.js	{ default }	not fully bundled	not fully bundled	true
single-object-export.js	{ named }	not fully bundled	not fully bundled	true
single-object-with-default-export.js	{ named, default }	not fully bundled	not fully bundled	true
tla-esModule.js tla-esm.js tla-esm.mjs	compilation error	not fully bundled	compilation error	compilation error

vite (.mts)

Versions:

• vite-plugin-externalize-deps@0.7.0
• vite@4.4.9

vite (mts)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js default-export-esm.js default-export-esm.mjs	'default'	not fully bundled	not fully bundled	true
default-export.js	{ default }	not fully bundled	not fully bundled	true
single-object-export.js	{ named }	not fully bundled	not fully bundled	true
single-object-with-default-export.js	{ named, default }	not fully bundled	not fully bundled	true
tla-esModule.js tla-esm.js tla-esm.mjs	compilation error	not fully bundled	compilation error	compilation error

vite (.ts)

Versions:

• vite-plugin-externalize-deps@0.7.0
• vite@4.4.9

vite (ts)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js default-export-esm.js default-export-esm.mjs	'default'	not fully bundled	not fully bundled	true
default-export.js	{ default }	not fully bundled	not fully bundled	true
single-object-export.js	{ named }	not fully bundled	not fully bundled	true
single-object-with-default-export.js	{ named, default }	not fully bundled	not fully bundled	true
tla-esModule.js tla-esm.js tla-esm.mjs	compilation error	not fully bundled	compilation error	compilation error

vite (.ts with "type": "module")

Versions:

• vite-plugin-externalize-deps@0.7.0
• vite@4.4.9

vite (ts-module)	import x import().default	x = require()	await import() === require()	import * as x; x === await import()
default-export-esModule.js default-export-esm.js default-export-esm.mjs	'default'	not fully bundled	not fully bundled	true
default-export.js	{ default }	not fully bundled	not fully bundled	true
single-object-export.js	{ named }	not fully bundled	not fully bundled	true
single-object-with-default-export.js	{ named, default }	not fully bundled	not fully bundled	true
tla-esModule.js tla-esm.js tla-esm.mjs	compilation error	not fully bundled	compilation error	compilation error

Results by exporting module

default-export.js

exports.default = "default";

default-export.js	node (mjs, js-module)	node (js)	bun babel rollup (mjs, js, js-module, mts, ts-module)	webpack rollup (ts) esbuild	parcel	vite
import x	{ default }	syntax error	{ default }	{ default }	{ default }	{ default }
import().default	{ default }	syntax error	{ default }	{ default }	'default'	{ default }
x = require()	runtime error	{ default }	{ default }	{ default }	{ default }	not fully bundled
await import() === require()	runtime error	false	false	false	true	not fully bundled
import * as x; x === await import()	true	syntax error	true	false	true	true

default-export-esModule.js

Object.defineProperty(exports, "__esModule", { value: true });
exports.default = "default";

default-export-esModule.js	node (mjs, js-module)	node (js)	bun rollup	babel webpack (js, mts, ts, ts-module) parcel	webpack (mjs, js-module) esbuild (mjs, js-module, mts, ts-module)	esbuild (js, ts)	vite
import x import().default	{ [__esModule], default }	syntax error	'default'	'default'	{ [__esModule], default }	'default'	'default'
x = require()	runtime error	{ [__esModule], default }	{ [__esModule], default }	{ [__esModule], default }	{ [__esModule], default }	{ [__esModule], default }	not fully bundled
await import() === require()	runtime error	false	false	true	false	false	not fully bundled
import * as x; x === await import()	true	syntax error	true	true	false	false	true

default-export-esm.js

export default "default";

default-export-esm.js	node (mjs, js-module)	node (js) babel	bun	webpack (mjs, js-module) rollup (mjs, mts, ts-module)	webpack (js, mts, ts, ts-module)	rollup (js, js-module) esbuild	rollup (ts)	parcel	vite
import x	syntax error	syntax error	'default'	'default'	'default'	'default'	syntax error	'default'	'default'
import().default	syntax error	syntax error	'default'	'default'	'default'	'default'	'default'	'default'	'default'
x = require()	runtime error	syntax error	{ [__esModule] }	syntax error	{ [__esModule], default: [G], [Module] }	{ [__esModule], default: [G] }	syntax error	{ [__esModule], default }	not fully bundled
await import() === require()	runtime error	syntax error	false	syntax error	true	false	syntax error	true	not fully bundled
import * as x; x === await import()	syntax error	syntax error	true	true	true	true	syntax error	true	true

default-export-esm.mjs

export default "default";

default-export-esm.mjs	node (mjs, js-module)	node (js)	bun	babel	webpack (mjs, js-module) rollup (mjs, mts, ts-module)	webpack (js, mts, ts, ts-module)	rollup (js, js-module) esbuild	rollup (ts)	parcel	vite
import x	'default'	syntax error	'default'	syntax error	'default'	'default'	'default'	require(esm) not allowed	'default'	'default'
import().default	'default'	syntax error	'default'	syntax error	'default'	'default'	'default'	'default'	'default'	'default'
x = require()	runtime error	require(esm) not allowed	{ [__esModule] }	syntax error	require(esm) not allowed	{ [__esModule], default: [G], [Module] }	{ [__esModule], default: [G] }	require(esm) not allowed	{ [__esModule], default }	not fully bundled
await import() === require()	runtime error	require(esm) not allowed	false	syntax error	require(esm) not allowed	true	false	require(esm) not allowed	true	not fully bundled
import * as x; x === await import()	true	syntax error	true	syntax error	true	true	true	require(esm) not allowed	true	true

single-object-export.js

module.exports = {
  named: "named",
};

single-object-export.js	node (mjs, js-module)	node (js)	bun babel rollup (mjs, js, js-module, mts, ts-module)	webpack rollup (ts) esbuild	parcel	vite
import x	{ named }	syntax error	{ named }	{ named }	{ named }	{ named }
import().default	{ named }	syntax error	{ named }	{ named }	undefined	{ named }
x = require()	runtime error	{ named }	{ named }	{ named }	{ named }	not fully bundled
await import() === require()	runtime error	false	false	false	true	not fully bundled
import * as x; x === await import()	true	syntax error	true	false	true	true

single-object-with-default-export.js

module.exports = {
  named: "named",
  default: "default",
};

single-object-with-default-export.js	node (mjs, js-module)	node (js)	bun babel rollup (mjs, js, js-module, mts, ts-module)	webpack rollup (ts) esbuild	parcel	vite
import x	{ named, default }	syntax error	{ named, default }	{ named, default }	{ named, default }	{ named, default }
import().default	{ named, default }	syntax error	{ named, default }	{ named, default }	'default'	{ named, default }
x = require()	runtime error	{ named, default }	{ named, default }	{ named, default }	{ named, default }	not fully bundled
await import() === require()	runtime error	false	false	false	true	not fully bundled
import * as x; x === await import()	true	syntax error	true	false	true	true

tla-esModule.js

Object.defineProperty(exports, "__esModule", { value: true });
await Promise.resolve();
exports.named = "named";
exports.default = "default";

tla-esModule.js	node (mjs, js-module)	node (js) babel parcel	bun	webpack (mjs, js-module) rollup (mjs, mts, ts-module)	webpack (js, mts, ts, ts-module) rollup (js, js-module) esbuild	rollup (ts)	vite
import x	syntax error	syntax error	syntax error	compilation error	compilation error	syntax error	compilation error
import().default import * as x; x === await import()	syntax error	syntax error	runtime error	compilation error	compilation error	compilation error	compilation error
x = require()	runtime error	syntax error	syntax error	syntax error	compilation error	syntax error	not fully bundled
await import() === require()	runtime error	syntax error	runtime error	compilation error	compilation error	compilation error	compilation error

tla-esm.js

await Promise.resolve();
export const named = "named";
export default "default";

tla-esm.js	node (mjs, js-module)	node (js) babel parcel	bun	webpack (mjs, js-module)	webpack (js, mts, ts, ts-module)	rollup (mjs, mts, ts-module)	rollup (js, js-module) esbuild	rollup (ts)	vite
import x	syntax error	syntax error	'default'	'default'	'default'	compilation error	compilation error	syntax error	compilation error
import().default	syntax error	syntax error	'default'	'default'	'default'	compilation error	compilation error	compilation error	compilation error
x = require()	runtime error	syntax error	type error	syntax error	Promise { { [__esModule], default: [G], named: [G], [Module] }, [Symbol(webpack exports)]: { [__esModule], default: [G], named: [G], [Module] }, [Symbol(webpack queues)]: { [Function (anonymous)] [length]: 1, [name]: '' } }	syntax error	compilation error	syntax error	not fully bundled
await import() === require()	runtime error	syntax error	false	syntax error	false	compilation error	compilation error	compilation error	compilation error
import * as x; x === await import()	syntax error	syntax error	true	true	true	compilation error	compilation error	compilation error	compilation error

tla-esm.mjs

await Promise.resolve();
export const named = "named";
export default "default";

tla-esm.mjs	node (mjs, js-module)	node (js)	bun	babel parcel	webpack (mjs, js-module)	webpack (js, mts, ts, ts-module)	rollup (mjs, mts, ts-module)	rollup (js, js-module) esbuild	rollup (ts)	vite
import x	'default'	syntax error	'default'	syntax error	'default'	'default'	compilation error	compilation error	require(esm) not allowed	compilation error
import().default	'default'	syntax error	'default'	syntax error	'default'	'default'	compilation error	compilation error	compilation error	compilation error
x = require()	runtime error	require(esm) not allowed	type error	syntax error	require(esm) not allowed	Promise { { [__esModule], default: [G], named: [G], [Module] }, [Symbol(webpack exports)]: { [__esModule], default: [G], named: [G], [Module] }, [Symbol(webpack queues)]: { [Function (anonymous)] [length]: 1, [name]: '' } }	require(esm) not allowed	compilation error	require(esm) not allowed	not fully bundled
await import() === require()	runtime error	require(esm) not allowed	false	syntax error	require(esm) not allowed	false	compilation error	compilation error	compilation error	compilation error
import * as x; x === await import()	true	syntax error	true	syntax error	true	true	compilation error	compilation error	compilation error	compilation error

Results by import test case

import x

import x	node (mjs, js-module)	node (js)	bun	babel	webpack (mjs, js-module)	webpack (js, mts, ts, ts-module)	rollup (mjs, js, js-module, mts, ts-module) esbuild (js, ts) vite	rollup (ts)	esbuild (mjs, js-module, mts, ts-module)	parcel
default-export.js	{ default }	syntax error	{ default }	{ default }	{ default }	{ default }	{ default }	{ default }	{ default }	{ default }
default-export-esModule.js	{ [__esModule], default }	syntax error	'default'	'default'	{ [__esModule], default }	'default'	'default'	'default'	{ [__esModule], default }	'default'
default-export-esm.js	syntax error	syntax error	'default'	syntax error	'default'	'default'	'default'	syntax error	'default'	'default'
default-export-esm.mjs	'default'	syntax error	'default'	syntax error	'default'	'default'	'default'	require(esm) not allowed	'default'	'default'
single-object-export.js	{ named }	syntax error	{ named }	{ named }	{ named }	{ named }	{ named }	{ named }	{ named }	{ named }
single-object-with-default-export.js	{ named, default }	syntax error	{ named, default }	{ named, default }	{ named, default }	{ named, default }	{ named, default }	{ named, default }	{ named, default }	{ named, default }
tla-esModule.js	syntax error	syntax error	syntax error	syntax error	compilation error	compilation error	compilation error	syntax error	compilation error	syntax error
tla-esm.js	syntax error	syntax error	'default'	syntax error	'default'	'default'	compilation error	syntax error	compilation error	syntax error
tla-esm.mjs	'default'	syntax error	'default'	syntax error	'default'	'default'	compilation error	require(esm) not allowed	compilation error	syntax error

import().default

import().default	node (mjs, js-module)	node (js)	bun	babel	webpack (mjs, js-module)	webpack (js, mts, ts, ts-module)	rollup esbuild (js, ts) vite	esbuild (mjs, js-module, mts, ts-module)	parcel
default-export.js	{ default }	syntax error	{ default }	{ default }	{ default }	{ default }	{ default }	{ default }	'default'
default-export-esModule.js	{ [__esModule], default }	syntax error	'default'	'default'	{ [__esModule], default }	'default'	'default'	{ [__esModule], default }	'default'
default-export-esm.js	syntax error	syntax error	'default'	syntax error	'default'	'default'	'default'	'default'	'default'
default-export-esm.mjs	'default'	syntax error	'default'	syntax error	'default'	'default'	'default'	'default'	'default'
single-object-export.js	{ named }	syntax error	{ named }	{ named }	{ named }	{ named }	{ named }	{ named }	undefined
single-object-with-default-export.js	{ named, default }	syntax error	{ named, default }	{ named, default }	{ named, default }	{ named, default }	{ named, default }	{ named, default }	'default'
tla-esModule.js	syntax error	syntax error	runtime error	syntax error	compilation error	compilation error	compilation error	compilation error	syntax error
tla-esm.js	syntax error	syntax error	'default'	syntax error	'default'	'default'	compilation error	compilation error	syntax error
tla-esm.mjs	'default'	syntax error	'default'	syntax error	'default'	'default'	compilation error	compilation error	syntax error

x = require()

x = require()	node (mjs, js-module)	node (js) webpack (mjs, js-module) rollup (mjs, mts, ts, ts-module)	bun	babel	webpack (js, mts, ts, ts-module)	rollup (js, js-module) esbuild	parcel	vite
default-export.js	runtime error	{ default }	{ default }	{ default }	{ default }	{ default }	{ default }	not fully bundled
default-export-esModule.js	runtime error	{ [__esModule], default }	{ [__esModule], default }	{ [__esModule], default }	{ [__esModule], default }	{ [__esModule], default }	{ [__esModule], default }	not fully bundled
default-export-esm.js	runtime error	syntax error	{ [__esModule] }	syntax error	{ [__esModule], default: [G], [Module] }	{ [__esModule], default: [G] }	{ [__esModule], default }	not fully bundled
default-export-esm.mjs	runtime error	require(esm) not allowed	{ [__esModule] }	syntax error	{ [__esModule], default: [G], [Module] }	{ [__esModule], default: [G] }	{ [__esModule], default }	not fully bundled
single-object-export.js	runtime error	{ named }	{ named }	{ named }	{ named }	{ named }	{ named }	not fully bundled
single-object-with-default-export.js	runtime error	{ named, default }	{ named, default }	{ named, default }	{ named, default }	{ named, default }	{ named, default }	not fully bundled
tla-esModule.js	runtime error	syntax error	syntax error	syntax error	compilation error	compilation error	syntax error	not fully bundled
tla-esm.js	runtime error	syntax error	type error	syntax error	Promise { { [__esModule], default: [G], named: [G], [Module] }, [Symbol(webpack exports)]: { [__esModule], default: [G], named: [G], [Module] }, [Symbol(webpack queues)]: { [Function (anonymous)] [length]: 1, [name]: '' } }	compilation error	syntax error	not fully bundled
tla-esm.mjs	runtime error	require(esm) not allowed	type error	syntax error	Promise { { [__esModule], default: [G], named: [G], [Module] }, [Symbol(webpack exports)]: { [__esModule], default: [G], named: [G], [Module] }, [Symbol(webpack queues)]: { [Function (anonymous)] [length]: 1, [name]: '' } }	compilation error	syntax error	not fully bundled

await import() === require()

await import() === require()	node (mjs, js-module)	node (js)	bun	babel	webpack (mjs, js-module)	webpack (js, mts, ts, ts-module)	rollup (mjs, mts, ts, ts-module)	rollup (js, js-module) esbuild	parcel	vite
default-export.js single-object-export.js single-object-with-default-export.js	runtime error	false	false	false	false	false	false	false	true	not fully bundled
default-export-esModule.js	runtime error	false	false	true	false	true	false	false	true	not fully bundled
default-export-esm.js	runtime error	syntax error	false	syntax error	syntax error	true	syntax error	false	true	not fully bundled
default-export-esm.mjs	runtime error	require(esm) not allowed	false	syntax error	require(esm) not allowed	true	require(esm) not allowed	false	true	not fully bundled
tla-esModule.js	runtime error	syntax error	runtime error	syntax error	compilation error	compilation error	compilation error	compilation error	syntax error	compilation error
tla-esm.js	runtime error	syntax error	false	syntax error	syntax error	false	compilation error	compilation error	syntax error	compilation error
tla-esm.mjs	runtime error	require(esm) not allowed	false	syntax error	require(esm) not allowed	false	compilation error	compilation error	syntax error	compilation error

import * as x; x === await import()

import * as x; x === await import()	node (mjs, js-module)	node (js)	bun	babel	webpack (mjs, js-module)	webpack (js, mts, ts, ts-module)	rollup (mjs, js, js-module, mts, ts-module) vite	rollup (ts)	esbuild	parcel
default-export.js single-object-export.js single-object-with-default-export.js	true	syntax error	true	true	false	false	true	false	false	true
default-export-esModule.js	true	syntax error	true	true	false	true	true	true	false	true
default-export-esm.js	syntax error	syntax error	true	syntax error	true	true	true	syntax error	true	true
default-export-esm.mjs	true	syntax error	true	syntax error	true	true	true	require(esm) not allowed	true	true
tla-esModule.js	syntax error	syntax error	runtime error	syntax error	compilation error	compilation error	compilation error	compilation error	compilation error	syntax error
tla-esm.js	syntax error	syntax error	true	syntax error	true	true	compilation error	compilation error	compilation error	syntax error
tla-esm.mjs	true	syntax error	true	syntax error	true	true	compilation error	compilation error	compilation error	syntax error

Differences

	node (mjs)	node (js)	node (js-module)	bun (mjs)	bun (js)	bun (js-module)	bun (mts)	bun (ts)	bun (ts-module)	babel (mjs)	babel (js)	babel (js-module)	babel (mts)	babel (ts)	babel (ts-module)	webpack (mjs)	webpack (js)	webpack (js-module)	webpack (mts)	webpack (ts)	webpack (ts-module)	rollup (mjs)	rollup (js)	rollup (js-module)	rollup (mts)	rollup (ts)	rollup (ts-module)	esbuild (mjs)	esbuild (js)	esbuild (js-module)	esbuild (mts)	esbuild (ts)	esbuild (ts-module)	parcel (mjs)	parcel (js)	parcel (js-module)	parcel (mts)	parcel (ts)	parcel (ts-module)	vite (mjs)	vite (js)	vite (js-module)	vite (mts)	vite (ts)	vite (ts-module)
node (mjs)	-	❗️ 13	✅ identical	❗️ 12	❗️ 12	❗️ 12	❗️ 12	❗️ 12	❗️ 12	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 13	❗️ 14	❗️ 13	❗️ 14	❗️ 14	❗️ 14	💥 16	❗️ 13	❗️ 13	💥 16	💥 18	💥 16	❗️ 13	❗️ 14	❗️ 13	❗️ 13	❗️ 14	❗️ 13	❗️ 14	❗️ 14	❗️ 14	❗️ 14	❗️ 14	❗️ 14	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9
node (js)	❗️ 13	-	❗️ 13	❗️ 12	❗️ 12	❗️ 12	❗️ 12	❗️ 12	❗️ 12	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 8	💥 16	⚠️ 8	💥 16	💥 16	💥 16	⚠️ 8	❗️ 12	❗️ 12	⚠️ 8	❗️ 12	⚠️ 8	❗️ 14	❗️ 13	❗️ 14	❗️ 14	❗️ 13	❗️ 14	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	💥 17	💥 17	💥 17	💥 17	💥 17	💥 17
node (js-module)	✅ identical	❗️ 13	-	❗️ 12	❗️ 12	❗️ 12	❗️ 12	❗️ 12	❗️ 12	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 13	❗️ 14	❗️ 13	❗️ 14	❗️ 14	❗️ 14	💥 16	❗️ 13	❗️ 13	💥 16	💥 18	💥 16	❗️ 13	❗️ 14	❗️ 13	❗️ 13	❗️ 14	❗️ 13	❗️ 14	❗️ 14	❗️ 14	❗️ 14	❗️ 14	❗️ 14	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9
bun (mjs)	❗️ 12	❗️ 12	❗️ 12	-	✅ identical	✅ identical	✅ identical	✅ identical	✅ identical	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	❗️ 10	⚠️ 6	❗️ 10	⚠️ 6	⚠️ 6	⚠️ 6	❗️ 11	⚠️ 7	⚠️ 7	❗️ 11	💥 15	❗️ 11	⚠️ 9	⚠️ 8	⚠️ 9	⚠️ 9	⚠️ 8	⚠️ 9	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13
bun (js)	❗️ 12	❗️ 12	❗️ 12	✅ identical	-	✅ identical	✅ identical	✅ identical	✅ identical	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	❗️ 10	⚠️ 6	❗️ 10	⚠️ 6	⚠️ 6	⚠️ 6	❗️ 11	⚠️ 7	⚠️ 7	❗️ 11	💥 15	❗️ 11	⚠️ 9	⚠️ 8	⚠️ 9	⚠️ 9	⚠️ 8	⚠️ 9	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13
bun (js-module)	❗️ 12	❗️ 12	❗️ 12	✅ identical	✅ identical	-	✅ identical	✅ identical	✅ identical	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	❗️ 10	⚠️ 6	❗️ 10	⚠️ 6	⚠️ 6	⚠️ 6	❗️ 11	⚠️ 7	⚠️ 7	❗️ 11	💥 15	❗️ 11	⚠️ 9	⚠️ 8	⚠️ 9	⚠️ 9	⚠️ 8	⚠️ 9	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13
bun (mts)	❗️ 12	❗️ 12	❗️ 12	✅ identical	✅ identical	✅ identical	-	✅ identical	✅ identical	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	❗️ 10	⚠️ 6	❗️ 10	⚠️ 6	⚠️ 6	⚠️ 6	❗️ 11	⚠️ 7	⚠️ 7	❗️ 11	💥 15	❗️ 11	⚠️ 9	⚠️ 8	⚠️ 9	⚠️ 9	⚠️ 8	⚠️ 9	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13
bun (ts)	❗️ 12	❗️ 12	❗️ 12	✅ identical	✅ identical	✅ identical	✅ identical	-	✅ identical	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	❗️ 10	⚠️ 6	❗️ 10	⚠️ 6	⚠️ 6	⚠️ 6	❗️ 11	⚠️ 7	⚠️ 7	❗️ 11	💥 15	❗️ 11	⚠️ 9	⚠️ 8	⚠️ 9	⚠️ 9	⚠️ 8	⚠️ 9	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13
bun (ts-module)	❗️ 12	❗️ 12	❗️ 12	✅ identical	✅ identical	✅ identical	✅ identical	✅ identical	-	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	❗️ 10	⚠️ 6	❗️ 10	⚠️ 6	⚠️ 6	⚠️ 6	❗️ 11	⚠️ 7	⚠️ 7	❗️ 11	💥 15	❗️ 11	⚠️ 9	⚠️ 8	⚠️ 9	⚠️ 9	⚠️ 8	⚠️ 9	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13
babel (mjs)	❗️ 10	⚠️ 7	❗️ 10	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	-	✅ identical	✅ identical	✅ identical	✅ identical	✅ identical	⚠️ 7	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11
babel (js)	❗️ 10	⚠️ 7	❗️ 10	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	✅ identical	-	✅ identical	✅ identical	✅ identical	✅ identical	⚠️ 7	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11
babel (js-module)	❗️ 10	⚠️ 7	❗️ 10	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	✅ identical	✅ identical	-	✅ identical	✅ identical	✅ identical	⚠️ 7	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11
babel (mts)	❗️ 10	⚠️ 7	❗️ 10	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	✅ identical	✅ identical	✅ identical	-	✅ identical	✅ identical	⚠️ 7	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11
babel (ts)	❗️ 10	⚠️ 7	❗️ 10	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	✅ identical	✅ identical	✅ identical	✅ identical	-	✅ identical	⚠️ 7	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11
babel (ts-module)	❗️ 10	⚠️ 7	❗️ 10	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	✅ identical	✅ identical	✅ identical	✅ identical	✅ identical	-	⚠️ 7	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11
webpack (mjs)	❗️ 13	⚠️ 8	❗️ 13	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	-	❗️ 11	✅ identical	❗️ 11	❗️ 11	❗️ 11	⚠️ 6	❗️ 11	❗️ 11	⚠️ 6	❗️ 11	⚠️ 6	⚠️ 9	❗️ 10	⚠️ 9	⚠️ 9	❗️ 10	⚠️ 9	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	💥 15	💥 15	💥 15	💥 15	💥 15	💥 15
webpack (js)	❗️ 14	💥 16	❗️ 14	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	❗️ 11	-	❗️ 11	✅ identical	✅ identical	✅ identical	❗️ 12	⚠️ 7	⚠️ 7	❗️ 12	❗️ 13	❗️ 12	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 7	⚠️ 8	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13
webpack (js-module)	❗️ 13	⚠️ 8	❗️ 13	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	✅ identical	❗️ 11	-	❗️ 11	❗️ 11	❗️ 11	⚠️ 6	❗️ 11	❗️ 11	⚠️ 6	❗️ 11	⚠️ 6	⚠️ 9	❗️ 10	⚠️ 9	⚠️ 9	❗️ 10	⚠️ 9	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	💥 15	💥 15	💥 15	💥 15	💥 15	💥 15
webpack (mts)	❗️ 14	💥 16	❗️ 14	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	❗️ 11	✅ identical	❗️ 11	-	✅ identical	✅ identical	❗️ 12	⚠️ 7	⚠️ 7	❗️ 12	❗️ 13	❗️ 12	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 7	⚠️ 8	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13
webpack (ts)	❗️ 14	💥 16	❗️ 14	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	❗️ 11	✅ identical	❗️ 11	✅ identical	-	✅ identical	❗️ 12	⚠️ 7	⚠️ 7	❗️ 12	❗️ 13	❗️ 12	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 7	⚠️ 8	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13
webpack (ts-module)	❗️ 14	💥 16	❗️ 14	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	❗️ 11	✅ identical	❗️ 11	✅ identical	✅ identical	-	❗️ 12	⚠️ 7	⚠️ 7	❗️ 12	❗️ 13	❗️ 12	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 7	⚠️ 8	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13
rollup (mjs)	💥 16	⚠️ 8	💥 16	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	❗️ 12	⚠️ 6	❗️ 12	❗️ 12	❗️ 12	-	⚠️ 6	⚠️ 6	✅ identical	⚠️ 7	✅ identical	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 7	⚠️ 8	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9
rollup (js)	❗️ 13	❗️ 12	❗️ 13	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	❗️ 11	⚠️ 7	❗️ 11	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 6	-	✅ identical	⚠️ 6	❗️ 11	⚠️ 6	🤏 2	🤏 1	🤏 2	🤏 2	🤏 1	🤏 2	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7
rollup (js-module)	❗️ 13	❗️ 12	❗️ 13	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	❗️ 11	⚠️ 7	❗️ 11	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 6	✅ identical	-	⚠️ 6	❗️ 11	⚠️ 6	🤏 2	🤏 1	🤏 2	🤏 2	🤏 1	🤏 2	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7
rollup (mts)	💥 16	⚠️ 8	💥 16	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	❗️ 12	⚠️ 6	❗️ 12	❗️ 12	❗️ 12	✅ identical	⚠️ 6	⚠️ 6	-	⚠️ 7	✅ identical	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 7	⚠️ 8	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9
rollup (ts)	💥 18	❗️ 12	💥 18	💥 15	💥 15	💥 15	💥 15	💥 15	💥 15	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	❗️ 11	❗️ 13	❗️ 11	❗️ 13	❗️ 13	❗️ 13	⚠️ 7	❗️ 11	❗️ 11	⚠️ 7	-	⚠️ 7	❗️ 12	❗️ 11	❗️ 12	❗️ 12	❗️ 11	❗️ 12	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	💥 16	💥 16	💥 16	💥 16	💥 16	💥 16
rollup (ts-module)	💥 16	⚠️ 8	💥 16	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	⚠️ 6	❗️ 12	⚠️ 6	❗️ 12	❗️ 12	❗️ 12	✅ identical	⚠️ 6	⚠️ 6	✅ identical	⚠️ 7	-	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 7	⚠️ 8	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9
esbuild (mjs)	❗️ 13	❗️ 14	❗️ 13	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 9	⚠️ 8	⚠️ 9	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	🤏 2	🤏 2	⚠️ 8	❗️ 12	⚠️ 8	-	🤏 1	✅ identical	✅ identical	🤏 1	✅ identical	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9
esbuild (js)	❗️ 14	❗️ 13	❗️ 14	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	❗️ 10	⚠️ 7	❗️ 10	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	🤏 1	🤏 1	⚠️ 7	❗️ 11	⚠️ 7	🤏 1	-	🤏 1	🤏 1	✅ identical	🤏 1	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8
esbuild (js-module)	❗️ 13	❗️ 14	❗️ 13	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 9	⚠️ 8	⚠️ 9	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	🤏 2	🤏 2	⚠️ 8	❗️ 12	⚠️ 8	✅ identical	🤏 1	-	✅ identical	🤏 1	✅ identical	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9
esbuild (mts)	❗️ 13	❗️ 14	❗️ 13	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 9	⚠️ 8	⚠️ 9	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	🤏 2	🤏 2	⚠️ 8	❗️ 12	⚠️ 8	✅ identical	🤏 1	✅ identical	-	🤏 1	✅ identical	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9
esbuild (ts)	❗️ 14	❗️ 13	❗️ 14	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	❗️ 10	⚠️ 7	❗️ 10	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	🤏 1	🤏 1	⚠️ 7	❗️ 11	⚠️ 7	🤏 1	✅ identical	🤏 1	🤏 1	-	🤏 1	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8
esbuild (ts-module)	❗️ 13	❗️ 14	❗️ 13	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 9	⚠️ 8	⚠️ 9	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	🤏 2	🤏 2	⚠️ 8	❗️ 12	⚠️ 8	✅ identical	🤏 1	✅ identical	✅ identical	🤏 1	-	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 8	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9	⚠️ 9
parcel (mjs)	❗️ 14	❗️ 13	❗️ 14	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	❗️ 13	❗️ 10	❗️ 13	❗️ 10	❗️ 10	❗️ 10	❗️ 10	⚠️ 6	⚠️ 6	❗️ 10	❗️ 13	❗️ 10	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 7	⚠️ 8	-	✅ identical	✅ identical	✅ identical	✅ identical	✅ identical	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10
parcel (js)	❗️ 14	❗️ 13	❗️ 14	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	❗️ 13	❗️ 10	❗️ 13	❗️ 10	❗️ 10	❗️ 10	❗️ 10	⚠️ 6	⚠️ 6	❗️ 10	❗️ 13	❗️ 10	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 7	⚠️ 8	✅ identical	-	✅ identical	✅ identical	✅ identical	✅ identical	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10
parcel (js-module)	❗️ 14	❗️ 13	❗️ 14	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	❗️ 13	❗️ 10	❗️ 13	❗️ 10	❗️ 10	❗️ 10	❗️ 10	⚠️ 6	⚠️ 6	❗️ 10	❗️ 13	❗️ 10	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 7	⚠️ 8	✅ identical	✅ identical	-	✅ identical	✅ identical	✅ identical	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10
parcel (mts)	❗️ 14	❗️ 13	❗️ 14	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	❗️ 13	❗️ 10	❗️ 13	❗️ 10	❗️ 10	❗️ 10	❗️ 10	⚠️ 6	⚠️ 6	❗️ 10	❗️ 13	❗️ 10	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 7	⚠️ 8	✅ identical	✅ identical	✅ identical	-	✅ identical	✅ identical	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10
parcel (ts)	❗️ 14	❗️ 13	❗️ 14	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	❗️ 13	❗️ 10	❗️ 13	❗️ 10	❗️ 10	❗️ 10	❗️ 10	⚠️ 6	⚠️ 6	❗️ 10	❗️ 13	❗️ 10	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 7	⚠️ 8	✅ identical	✅ identical	✅ identical	✅ identical	-	✅ identical	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10
parcel (ts-module)	❗️ 14	❗️ 13	❗️ 14	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	⚠️ 7	❗️ 13	❗️ 10	❗️ 13	❗️ 10	❗️ 10	❗️ 10	❗️ 10	⚠️ 6	⚠️ 6	❗️ 10	❗️ 13	❗️ 10	⚠️ 8	⚠️ 7	⚠️ 8	⚠️ 8	⚠️ 7	⚠️ 8	✅ identical	✅ identical	✅ identical	✅ identical	✅ identical	-	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10
vite (mjs)	⚠️ 9	💥 17	⚠️ 9	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11	💥 15	❗️ 13	💥 15	❗️ 13	❗️ 13	❗️ 13	⚠️ 9	⚠️ 7	⚠️ 7	⚠️ 9	💥 16	⚠️ 9	⚠️ 9	⚠️ 8	⚠️ 9	⚠️ 9	⚠️ 8	⚠️ 9	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	-	✅ identical	✅ identical	✅ identical	✅ identical	✅ identical
vite (js)	⚠️ 9	💥 17	⚠️ 9	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11	💥 15	❗️ 13	💥 15	❗️ 13	❗️ 13	❗️ 13	⚠️ 9	⚠️ 7	⚠️ 7	⚠️ 9	💥 16	⚠️ 9	⚠️ 9	⚠️ 8	⚠️ 9	⚠️ 9	⚠️ 8	⚠️ 9	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	✅ identical	-	✅ identical	✅ identical	✅ identical	✅ identical
vite (js-module)	⚠️ 9	💥 17	⚠️ 9	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11	💥 15	❗️ 13	💥 15	❗️ 13	❗️ 13	❗️ 13	⚠️ 9	⚠️ 7	⚠️ 7	⚠️ 9	💥 16	⚠️ 9	⚠️ 9	⚠️ 8	⚠️ 9	⚠️ 9	⚠️ 8	⚠️ 9	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	✅ identical	✅ identical	-	✅ identical	✅ identical	✅ identical
vite (mts)	⚠️ 9	💥 17	⚠️ 9	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11	💥 15	❗️ 13	💥 15	❗️ 13	❗️ 13	❗️ 13	⚠️ 9	⚠️ 7	⚠️ 7	⚠️ 9	💥 16	⚠️ 9	⚠️ 9	⚠️ 8	⚠️ 9	⚠️ 9	⚠️ 8	⚠️ 9	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	✅ identical	✅ identical	✅ identical	-	✅ identical	✅ identical
vite (ts)	⚠️ 9	💥 17	⚠️ 9	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11	💥 15	❗️ 13	💥 15	❗️ 13	❗️ 13	❗️ 13	⚠️ 9	⚠️ 7	⚠️ 7	⚠️ 9	💥 16	⚠️ 9	⚠️ 9	⚠️ 8	⚠️ 9	⚠️ 9	⚠️ 8	⚠️ 9	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	✅ identical	✅ identical	✅ identical	✅ identical	-	✅ identical
vite (ts-module)	⚠️ 9	💥 17	⚠️ 9	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 13	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11	❗️ 11	💥 15	❗️ 13	💥 15	❗️ 13	❗️ 13	❗️ 13	⚠️ 9	⚠️ 7	⚠️ 7	⚠️ 9	💥 16	⚠️ 9	⚠️ 9	⚠️ 8	⚠️ 9	⚠️ 9	⚠️ 8	⚠️ 9	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	❗️ 10	✅ identical	✅ identical	✅ identical	✅ identical	✅ identical	-

node (.mjs) vs. node (.js)

node (mjs) vs. node (js)	fixture	node (mjs)	node (js)
import x import().default	default-export.js	{ default }	syntax error
import x import().default	default-export-esModule.js	{ [__esModule], default }	syntax error
import x import().default	default-export-esm.mjs tla-esm.mjs	'default'	syntax error
import x import().default	single-object-export.js	{ named }	syntax error
import x import().default	single-object-with-default-export.js	{ named, default }	syntax error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require() await import() === require()	default-export-esm.js tla-esModule.js tla-esm.js	runtime error	syntax error
x = require() await import() === require()	default-export-esm.mjs tla-esm.mjs	runtime error	require(esm) not allowed
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
await import() === require()	default-export.js default-export-esModule.js single-object-export.js single-object-with-default-export.js	runtime error	false
import * as x; x === await import()	default-export.js default-export-esModule.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js tla-esm.mjs	true	syntax error

node (.mjs) vs. bun (.mjs)

node (mjs) vs. bun (mjs)	fixture	node (mjs)	bun (mjs)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js tla-esm.js	syntax error	'default'
import().default import * as x; x === await import()	tla-esModule.js	syntax error	runtime error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require()	default-export-esm.js default-export-esm.mjs	runtime error	{ [__esModule] }
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
x = require()	tla-esModule.js	runtime error	syntax error
x = require()	tla-esm.js tla-esm.mjs	runtime error	type error
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js tla-esm.js tla-esm.mjs	runtime error	false
import * as x; x === await import()	default-export-esm.js tla-esm.js	syntax error	true

node (.mjs) vs. bun (.js)

node (mjs) vs. bun (js)	fixture	node (mjs)	bun (js)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js tla-esm.js	syntax error	'default'
import().default import * as x; x === await import()	tla-esModule.js	syntax error	runtime error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require()	default-export-esm.js default-export-esm.mjs	runtime error	{ [__esModule] }
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
x = require()	tla-esModule.js	runtime error	syntax error
x = require()	tla-esm.js tla-esm.mjs	runtime error	type error
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js tla-esm.js tla-esm.mjs	runtime error	false
import * as x; x === await import()	default-export-esm.js tla-esm.js	syntax error	true

node (.mjs) vs. bun (.js with "type": "module")

node (mjs) vs. bun (js-module)	fixture	node (mjs)	bun (js-module)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js tla-esm.js	syntax error	'default'
import().default import * as x; x === await import()	tla-esModule.js	syntax error	runtime error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require()	default-export-esm.js default-export-esm.mjs	runtime error	{ [__esModule] }
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
x = require()	tla-esModule.js	runtime error	syntax error
x = require()	tla-esm.js tla-esm.mjs	runtime error	type error
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js tla-esm.js tla-esm.mjs	runtime error	false
import * as x; x === await import()	default-export-esm.js tla-esm.js	syntax error	true

node (.mjs) vs. bun (.mts)

node (mjs) vs. bun (mts)	fixture	node (mjs)	bun (mts)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js tla-esm.js	syntax error	'default'
import().default import * as x; x === await import()	tla-esModule.js	syntax error	runtime error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require()	default-export-esm.js default-export-esm.mjs	runtime error	{ [__esModule] }
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
x = require()	tla-esModule.js	runtime error	syntax error
x = require()	tla-esm.js tla-esm.mjs	runtime error	type error
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js tla-esm.js tla-esm.mjs	runtime error	false
import * as x; x === await import()	default-export-esm.js tla-esm.js	syntax error	true

node (.mjs) vs. bun (.ts)

node (mjs) vs. bun (ts)	fixture	node (mjs)	bun (ts)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js tla-esm.js	syntax error	'default'
import().default import * as x; x === await import()	tla-esModule.js	syntax error	runtime error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require()	default-export-esm.js default-export-esm.mjs	runtime error	{ [__esModule] }
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
x = require()	tla-esModule.js	runtime error	syntax error
x = require()	tla-esm.js tla-esm.mjs	runtime error	type error
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js tla-esm.js tla-esm.mjs	runtime error	false
import * as x; x === await import()	default-export-esm.js tla-esm.js	syntax error	true

node (.mjs) vs. bun (.ts with "type": "module")

node (mjs) vs. bun (ts-module)	fixture	node (mjs)	bun (ts-module)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js tla-esm.js	syntax error	'default'
import().default import * as x; x === await import()	tla-esModule.js	syntax error	runtime error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require()	default-export-esm.js default-export-esm.mjs	runtime error	{ [__esModule] }
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
x = require()	tla-esModule.js	runtime error	syntax error
x = require()	tla-esm.js tla-esm.mjs	runtime error	type error
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js tla-esm.js tla-esm.mjs	runtime error	false
import * as x; x === await import()	default-export-esm.js tla-esm.js	syntax error	true

node (.mjs) vs. babel (.mjs)

node (mjs) vs. babel (mjs)	fixture	node (mjs)	babel (mjs)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.mjs tla-esm.mjs	'default'	syntax error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require() await import() === require()	default-export-esm.js default-export-esm.mjs tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	syntax error
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
await import() === require()	default-export.js single-object-export.js single-object-with-default-export.js	runtime error	false
await import() === require()	default-export-esModule.js	runtime error	true
import * as x; x === await import()	default-export-esm.mjs tla-esm.mjs	true	syntax error

node (.mjs) vs. babel (.js)

node (mjs) vs. babel (js)	fixture	node (mjs)	babel (js)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.mjs tla-esm.mjs	'default'	syntax error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require() await import() === require()	default-export-esm.js default-export-esm.mjs tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	syntax error
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
await import() === require()	default-export.js single-object-export.js single-object-with-default-export.js	runtime error	false
await import() === require()	default-export-esModule.js	runtime error	true
import * as x; x === await import()	default-export-esm.mjs tla-esm.mjs	true	syntax error

node (.mjs) vs. babel (.js with "type": "module")

node (mjs) vs. babel (js-module)	fixture	node (mjs)	babel (js-module)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.mjs tla-esm.mjs	'default'	syntax error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require() await import() === require()	default-export-esm.js default-export-esm.mjs tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	syntax error
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
await import() === require()	default-export.js single-object-export.js single-object-with-default-export.js	runtime error	false
await import() === require()	default-export-esModule.js	runtime error	true
import * as x; x === await import()	default-export-esm.mjs tla-esm.mjs	true	syntax error

node (.mjs) vs. babel (.mts)

node (mjs) vs. babel (mts)	fixture	node (mjs)	babel (mts)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.mjs tla-esm.mjs	'default'	syntax error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require() await import() === require()	default-export-esm.js default-export-esm.mjs tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	syntax error
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
await import() === require()	default-export.js single-object-export.js single-object-with-default-export.js	runtime error	false
await import() === require()	default-export-esModule.js	runtime error	true
import * as x; x === await import()	default-export-esm.mjs tla-esm.mjs	true	syntax error

node (.mjs) vs. babel (.ts)

node (mjs) vs. babel (ts)	fixture	node (mjs)	babel (ts)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.mjs tla-esm.mjs	'default'	syntax error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require() await import() === require()	default-export-esm.js default-export-esm.mjs tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	syntax error
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
await import() === require()	default-export.js single-object-export.js single-object-with-default-export.js	runtime error	false
await import() === require()	default-export-esModule.js	runtime error	true
import * as x; x === await import()	default-export-esm.mjs tla-esm.mjs	true	syntax error

node (.mjs) vs. babel (.ts with "type": "module")

node (mjs) vs. babel (ts-module)	fixture	node (mjs)	babel (ts-module)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.mjs tla-esm.mjs	'default'	syntax error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require() await import() === require()	default-export-esm.js default-export-esm.mjs tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	syntax error
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
await import() === require()	default-export.js single-object-export.js single-object-with-default-export.js	runtime error	false
await import() === require()	default-export-esModule.js	runtime error	true
import * as x; x === await import()	default-export-esm.mjs tla-esm.mjs	true	syntax error

node (.mjs) vs. webpack (.mjs)

node (mjs) vs. webpack (mjs)	fixture	node (mjs)	webpack (mjs)
import x import().default	default-export-esm.js tla-esm.js	syntax error	'default'
import x import().default import * as x; x === await import()	tla-esModule.js	syntax error	compilation error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require()	default-export-esm.js tla-esModule.js tla-esm.js	runtime error	syntax error
x = require() await import() === require()	default-export-esm.mjs tla-esm.mjs	runtime error	require(esm) not allowed
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
await import() === require()	default-export.js default-export-esModule.js single-object-export.js single-object-with-default-export.js	runtime error	false
await import() === require()	default-export-esm.js tla-esm.js	runtime error	syntax error
await import() === require()	tla-esModule.js	runtime error	compilation error
import * as x; x === await import()	default-export.js default-export-esModule.js single-object-export.js single-object-with-default-export.js	true	false
import * as x; x === await import()	default-export-esm.js tla-esm.js	syntax error	true

node (.mjs) vs. webpack (.js)

node (mjs) vs. webpack (js)	fixture	node (mjs)	webpack (js)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js tla-esm.js	syntax error	'default'
import x import().default import * as x; x === await import()	tla-esModule.js	syntax error	compilation error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require()	default-export-esm.js default-export-esm.mjs	runtime error	{ [__esModule], default: [G], [Module] }
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
x = require() await import() === require()	tla-esModule.js	runtime error	compilation error
x = require()	tla-esm.js tla-esm.mjs	runtime error	Promise { { [__esModule], default: [G], named: [G], [Module] }, [Symbol(webpack exports)]: { [__esModule], default: [G], named: [G], [Module] }, [Symbol(webpack queues)]: { [Function (anonymous)] [length]: 1, [name]: '' } }
await import() === require()	default-export.js single-object-export.js single-object-with-default-export.js tla-esm.js tla-esm.mjs	runtime error	false
await import() === require()	default-export-esModule.js default-export-esm.js default-export-esm.mjs	runtime error	true
import * as x; x === await import()	default-export.js single-object-export.js single-object-with-default-export.js	true	false
import * as x; x === await import()	default-export-esm.js tla-esm.js	syntax error	true

node (.mjs) vs. webpack (.js with "type": "module")

node (mjs) vs. webpack (js-module)	fixture	node (mjs)	webpack (js-module)
import x import().default	default-export-esm.js tla-esm.js	syntax error	'default'
import x import().default import * as x; x === await import()	tla-esModule.js	syntax error	compilation error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require()	default-export-esm.js tla-esModule.js tla-esm.js	runtime error	syntax error
x = require() await import() === require()	default-export-esm.mjs tla-esm.mjs	runtime error	require(esm) not allowed
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
await import() === require()	default-export.js default-export-esModule.js single-object-export.js single-object-with-default-export.js	runtime error	false
await import() === require()	default-export-esm.js tla-esm.js	runtime error	syntax error
await import() === require()	tla-esModule.js	runtime error	compilation error
import * as x; x === await import()	default-export.js default-export-esModule.js single-object-export.js single-object-with-default-export.js	true	false
import * as x; x === await import()	default-export-esm.js tla-esm.js	syntax error	true

node (.mjs) vs. webpack (.mts)

node (mjs) vs. webpack (mts)	fixture	node (mjs)	webpack (mts)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js tla-esm.js	syntax error	'default'
import x import().default import * as x; x === await import()	tla-esModule.js	syntax error	compilation error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require()	default-export-esm.js default-export-esm.mjs	runtime error	{ [__esModule], default: [G], [Module] }
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
x = require() await import() === require()	tla-esModule.js	runtime error	compilation error
x = require()	tla-esm.js tla-esm.mjs	runtime error	Promise { { [__esModule], default: [G], named: [G], [Module] }, [Symbol(webpack exports)]: { [__esModule], default: [G], named: [G], [Module] }, [Symbol(webpack queues)]: { [Function (anonymous)] [length]: 1, [name]: '' } }
await import() === require()	default-export.js single-object-export.js single-object-with-default-export.js tla-esm.js tla-esm.mjs	runtime error	false
await import() === require()	default-export-esModule.js default-export-esm.js default-export-esm.mjs	runtime error	true
import * as x; x === await import()	default-export.js single-object-export.js single-object-with-default-export.js	true	false
import * as x; x === await import()	default-export-esm.js tla-esm.js	syntax error	true

node (.mjs) vs. webpack (.ts)

node (mjs) vs. webpack (ts)	fixture	node (mjs)	webpack (ts)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js tla-esm.js	syntax error	'default'
import x import().default import * as x; x === await import()	tla-esModule.js	syntax error	compilation error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require()	default-export-esm.js default-export-esm.mjs	runtime error	{ [__esModule], default: [G], [Module] }
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
x = require() await import() === require()	tla-esModule.js	runtime error	compilation error
x = require()	tla-esm.js tla-esm.mjs	runtime error	Promise { { [__esModule], default: [G], named: [G], [Module] }, [Symbol(webpack exports)]: { [__esModule], default: [G], named: [G], [Module] }, [Symbol(webpack queues)]: { [Function (anonymous)] [length]: 1, [name]: '' } }
await import() === require()	default-export.js single-object-export.js single-object-with-default-export.js tla-esm.js tla-esm.mjs	runtime error	false
await import() === require()	default-export-esModule.js default-export-esm.js default-export-esm.mjs	runtime error	true
import * as x; x === await import()	default-export.js single-object-export.js single-object-with-default-export.js	true	false
import * as x; x === await import()	default-export-esm.js tla-esm.js	syntax error	true

node (.mjs) vs. webpack (.ts with "type": "module")

node (mjs) vs. webpack (ts-module)	fixture	node (mjs)	webpack (ts-module)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js tla-esm.js	syntax error	'default'
import x import().default import * as x; x === await import()	tla-esModule.js	syntax error	compilation error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require()	default-export-esm.js default-export-esm.mjs	runtime error	{ [__esModule], default: [G], [Module] }
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
x = require() await import() === require()	tla-esModule.js	runtime error	compilation error
x = require()	tla-esm.js tla-esm.mjs	runtime error	Promise { { [__esModule], default: [G], named: [G], [Module] }, [Symbol(webpack exports)]: { [__esModule], default: [G], named: [G], [Module] }, [Symbol(webpack queues)]: { [Function (anonymous)] [length]: 1, [name]: '' } }
await import() === require()	default-export.js single-object-export.js single-object-with-default-export.js tla-esm.js tla-esm.mjs	runtime error	false
await import() === require()	default-export-esModule.js default-export-esm.js default-export-esm.mjs	runtime error	true
import * as x; x === await import()	default-export.js single-object-export.js single-object-with-default-export.js	true	false
import * as x; x === await import()	default-export-esm.js tla-esm.js	syntax error	true

node (.mjs) vs. rollup (.mjs)

node (mjs) vs. rollup (mjs)	fixture	node (mjs)	rollup (mjs)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js	syntax error	'default'
import x import().default import * as x; x === await import()	tla-esModule.js tla-esm.js	syntax error	compilation error
import x import().default	tla-esm.mjs	'default'	compilation error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require()	default-export-esm.js tla-esModule.js tla-esm.js	runtime error	syntax error
x = require()	default-export-esm.mjs tla-esm.mjs	runtime error	require(esm) not allowed
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
await import() === require()	default-export.js default-export-esModule.js single-object-export.js single-object-with-default-export.js	runtime error	false
await import() === require()	default-export-esm.js	runtime error	syntax error
await import() === require()	default-export-esm.mjs	runtime error	require(esm) not allowed
await import() === require()	tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	compilation error
import * as x; x === await import()	default-export-esm.js	syntax error	true
import * as x; x === await import()	tla-esm.mjs	true	compilation error

node (.mjs) vs. rollup (.js)

node (mjs) vs. rollup (js)	fixture	node (mjs)	rollup (js)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js	syntax error	'default'
import x import().default import * as x; x === await import()	tla-esModule.js tla-esm.js	syntax error	compilation error
import x import().default	tla-esm.mjs	'default'	compilation error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require()	default-export-esm.js default-export-esm.mjs	runtime error	{ [__esModule], default: [G] }
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
x = require() await import() === require()	tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	compilation error
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js	runtime error	false
import * as x; x === await import()	default-export-esm.js	syntax error	true
import * as x; x === await import()	tla-esm.mjs	true	compilation error

node (.mjs) vs. rollup (.js with "type": "module")

node (mjs) vs. rollup (js-module)	fixture	node (mjs)	rollup (js-module)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js	syntax error	'default'
import x import().default import * as x; x === await import()	tla-esModule.js tla-esm.js	syntax error	compilation error
import x import().default	tla-esm.mjs	'default'	compilation error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require()	default-export-esm.js default-export-esm.mjs	runtime error	{ [__esModule], default: [G] }
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
x = require() await import() === require()	tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	compilation error
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js	runtime error	false
import * as x; x === await import()	default-export-esm.js	syntax error	true
import * as x; x === await import()	tla-esm.mjs	true	compilation error

node (.mjs) vs. rollup (.mts)

node (mjs) vs. rollup (mts)	fixture	node (mjs)	rollup (mts)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js	syntax error	'default'
import x import().default import * as x; x === await import()	tla-esModule.js tla-esm.js	syntax error	compilation error
import x import().default	tla-esm.mjs	'default'	compilation error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require()	default-export-esm.js tla-esModule.js tla-esm.js	runtime error	syntax error
x = require()	default-export-esm.mjs tla-esm.mjs	runtime error	require(esm) not allowed
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
await import() === require()	default-export.js default-export-esModule.js single-object-export.js single-object-with-default-export.js	runtime error	false
await import() === require()	default-export-esm.js	runtime error	syntax error
await import() === require()	default-export-esm.mjs	runtime error	require(esm) not allowed
await import() === require()	tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	compilation error
import * as x; x === await import()	default-export-esm.js	syntax error	true
import * as x; x === await import()	tla-esm.mjs	true	compilation error

node (.mjs) vs. rollup (.ts)

node (mjs) vs. rollup (ts)	fixture	node (mjs)	rollup (ts)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x	default-export-esm.mjs tla-esm.mjs	'default'	require(esm) not allowed
import().default	default-export-esm.js	syntax error	'default'
import().default import * as x; x === await import()	tla-esModule.js tla-esm.js	syntax error	compilation error
import().default	tla-esm.mjs	'default'	compilation error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require()	default-export-esm.js tla-esModule.js tla-esm.js	runtime error	syntax error
x = require()	default-export-esm.mjs tla-esm.mjs	runtime error	require(esm) not allowed
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
await import() === require()	default-export.js default-export-esModule.js single-object-export.js single-object-with-default-export.js	runtime error	false
await import() === require()	default-export-esm.js	runtime error	syntax error
await import() === require()	default-export-esm.mjs	runtime error	require(esm) not allowed
await import() === require()	tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	compilation error
import * as x; x === await import()	default-export.js single-object-export.js single-object-with-default-export.js	true	false
import * as x; x === await import()	default-export-esm.mjs	true	require(esm) not allowed
import * as x; x === await import()	tla-esm.mjs	true	compilation error

node (.mjs) vs. rollup (.ts with "type": "module")

node (mjs) vs. rollup (ts-module)	fixture	node (mjs)	rollup (ts-module)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js	syntax error	'default'
import x import().default import * as x; x === await import()	tla-esModule.js tla-esm.js	syntax error	compilation error
import x import().default	tla-esm.mjs	'default'	compilation error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require()	default-export-esm.js tla-esModule.js tla-esm.js	runtime error	syntax error
x = require()	default-export-esm.mjs tla-esm.mjs	runtime error	require(esm) not allowed
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
await import() === require()	default-export.js default-export-esModule.js single-object-export.js single-object-with-default-export.js	runtime error	false
await import() === require()	default-export-esm.js	runtime error	syntax error
await import() === require()	default-export-esm.mjs	runtime error	require(esm) not allowed
await import() === require()	tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	compilation error
import * as x; x === await import()	default-export-esm.js	syntax error	true
import * as x; x === await import()	tla-esm.mjs	true	compilation error

node (.mjs) vs. esbuild (.mjs)

node (mjs) vs. esbuild (mjs)	fixture	node (mjs)	esbuild (mjs)
import x import().default	default-export-esm.js	syntax error	'default'
import x import().default import * as x; x === await import()	tla-esModule.js tla-esm.js	syntax error	compilation error
import x import().default	tla-esm.mjs	'default'	compilation error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require()	default-export-esm.js default-export-esm.mjs	runtime error	{ [__esModule], default: [G] }
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
x = require() await import() === require()	tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	compilation error
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js	runtime error	false
import * as x; x === await import()	default-export.js default-export-esModule.js single-object-export.js single-object-with-default-export.js	true	false
import * as x; x === await import()	default-export-esm.js	syntax error	true
import * as x; x === await import()	tla-esm.mjs	true	compilation error

node (.mjs) vs. esbuild (.js)

node (mjs) vs. esbuild (js)	fixture	node (mjs)	esbuild (js)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js	syntax error	'default'
import x import().default import * as x; x === await import()	tla-esModule.js tla-esm.js	syntax error	compilation error
import x import().default	tla-esm.mjs	'default'	compilation error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require()	default-export-esm.js default-export-esm.mjs	runtime error	{ [__esModule], default: [G] }
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
x = require() await import() === require()	tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	compilation error
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js	runtime error	false
import * as x; x === await import()	default-export.js default-export-esModule.js single-object-export.js single-object-with-default-export.js	true	false
import * as x; x === await import()	default-export-esm.js	syntax error	true
import * as x; x === await import()	tla-esm.mjs	true	compilation error

node (.mjs) vs. esbuild (.js with "type": "module")

node (mjs) vs. esbuild (js-module)	fixture	node (mjs)	esbuild (js-module)
import x import().default	default-export-esm.js	syntax error	'default'
import x import().default import * as x; x === await import()	tla-esModule.js tla-esm.js	syntax error	compilation error
import x import().default	tla-esm.mjs	'default'	compilation error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require()	default-export-esm.js default-export-esm.mjs	runtime error	{ [__esModule], default: [G] }
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
x = require() await import() === require()	tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	compilation error
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js	runtime error	false
import * as x; x === await import()	default-export.js default-export-esModule.js single-object-export.js single-object-with-default-export.js	true	false
import * as x; x === await import()	default-export-esm.js	syntax error	true
import * as x; x === await import()	tla-esm.mjs	true	compilation error

node (.mjs) vs. esbuild (.mts)

node (mjs) vs. esbuild (mts)	fixture	node (mjs)	esbuild (mts)
import x import().default	default-export-esm.js	syntax error	'default'
import x import().default import * as x; x === await import()	tla-esModule.js tla-esm.js	syntax error	compilation error
import x import().default	tla-esm.mjs	'default'	compilation error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require()	default-export-esm.js default-export-esm.mjs	runtime error	{ [__esModule], default: [G] }
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
x = require() await import() === require()	tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	compilation error
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js	runtime error	false
import * as x; x === await import()	default-export.js default-export-esModule.js single-object-export.js single-object-with-default-export.js	true	false
import * as x; x === await import()	default-export-esm.js	syntax error	true
import * as x; x === await import()	tla-esm.mjs	true	compilation error

node (.mjs) vs. esbuild (.ts)

node (mjs) vs. esbuild (ts)	fixture	node (mjs)	esbuild (ts)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js	syntax error	'default'
import x import().default import * as x; x === await import()	tla-esModule.js tla-esm.js	syntax error	compilation error
import x import().default	tla-esm.mjs	'default'	compilation error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require()	default-export-esm.js default-export-esm.mjs	runtime error	{ [__esModule], default: [G] }
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
x = require() await import() === require()	tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	compilation error
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js	runtime error	false
import * as x; x === await import()	default-export.js default-export-esModule.js single-object-export.js single-object-with-default-export.js	true	false
import * as x; x === await import()	default-export-esm.js	syntax error	true
import * as x; x === await import()	tla-esm.mjs	true	compilation error

node (.mjs) vs. esbuild (.ts with "type": "module")

node (mjs) vs. esbuild (ts-module)	fixture	node (mjs)	esbuild (ts-module)
import x import().default	default-export-esm.js	syntax error	'default'
import x import().default import * as x; x === await import()	tla-esModule.js tla-esm.js	syntax error	compilation error
import x import().default	tla-esm.mjs	'default'	compilation error
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js	runtime error	{ [__esModule], default }
x = require()	default-export-esm.js default-export-esm.mjs	runtime error	{ [__esModule], default: [G] }
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
x = require() await import() === require()	tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	compilation error
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js	runtime error	false
import * as x; x === await import()	default-export.js default-export-esModule.js single-object-export.js single-object-with-default-export.js	true	false
import * as x; x === await import()	default-export-esm.js	syntax error	true
import * as x; x === await import()	tla-esm.mjs	true	compilation error

node (.mjs) vs. parcel (.mjs)

node (mjs) vs. parcel (mjs)	fixture	node (mjs)	parcel (mjs)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js	syntax error	'default'
import x import().default	tla-esm.mjs	'default'	syntax error
import().default	default-export.js	{ default }	'default'
import().default	single-object-export.js	{ named }	undefined
import().default	single-object-with-default-export.js	{ named, default }	'default'
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js default-export-esm.js default-export-esm.mjs	runtime error	{ [__esModule], default }
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
x = require() await import() === require()	tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	syntax error
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js	runtime error	true
import * as x; x === await import()	default-export-esm.js	syntax error	true
import * as x; x === await import()	tla-esm.mjs	true	syntax error

node (.mjs) vs. parcel (.js)

node (mjs) vs. parcel (js)	fixture	node (mjs)	parcel (js)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js	syntax error	'default'
import x import().default	tla-esm.mjs	'default'	syntax error
import().default	default-export.js	{ default }	'default'
import().default	single-object-export.js	{ named }	undefined
import().default	single-object-with-default-export.js	{ named, default }	'default'
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js default-export-esm.js default-export-esm.mjs	runtime error	{ [__esModule], default }
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
x = require() await import() === require()	tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	syntax error
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js	runtime error	true
import * as x; x === await import()	default-export-esm.js	syntax error	true
import * as x; x === await import()	tla-esm.mjs	true	syntax error

node (.mjs) vs. parcel (.js with "type": "module")

node (mjs) vs. parcel (js-module)	fixture	node (mjs)	parcel (js-module)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js	syntax error	'default'
import x import().default	tla-esm.mjs	'default'	syntax error
import().default	default-export.js	{ default }	'default'
import().default	single-object-export.js	{ named }	undefined
import().default	single-object-with-default-export.js	{ named, default }	'default'
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js default-export-esm.js default-export-esm.mjs	runtime error	{ [__esModule], default }
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
x = require() await import() === require()	tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	syntax error
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js	runtime error	true
import * as x; x === await import()	default-export-esm.js	syntax error	true
import * as x; x === await import()	tla-esm.mjs	true	syntax error

node (.mjs) vs. parcel (.mts)

node (mjs) vs. parcel (mts)	fixture	node (mjs)	parcel (mts)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js	syntax error	'default'
import x import().default	tla-esm.mjs	'default'	syntax error
import().default	default-export.js	{ default }	'default'
import().default	single-object-export.js	{ named }	undefined
import().default	single-object-with-default-export.js	{ named, default }	'default'
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js default-export-esm.js default-export-esm.mjs	runtime error	{ [__esModule], default }
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
x = require() await import() === require()	tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	syntax error
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js	runtime error	true
import * as x; x === await import()	default-export-esm.js	syntax error	true
import * as x; x === await import()	tla-esm.mjs	true	syntax error

node (.mjs) vs. parcel (.ts)

node (mjs) vs. parcel (ts)	fixture	node (mjs)	parcel (ts)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js	syntax error	'default'
import x import().default	tla-esm.mjs	'default'	syntax error
import().default	default-export.js	{ default }	'default'
import().default	single-object-export.js	{ named }	undefined
import().default	single-object-with-default-export.js	{ named, default }	'default'
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js default-export-esm.js default-export-esm.mjs	runtime error	{ [__esModule], default }
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
x = require() await import() === require()	tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	syntax error
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js	runtime error	true
import * as x; x === await import()	default-export-esm.js	syntax error	true
import * as x; x === await import()	tla-esm.mjs	true	syntax error

node (.mjs) vs. parcel (.ts with "type": "module")

node (mjs) vs. parcel (ts-module)	fixture	node (mjs)	parcel (ts-module)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js	syntax error	'default'
import x import().default	tla-esm.mjs	'default'	syntax error
import().default	default-export.js	{ default }	'default'
import().default	single-object-export.js	{ named }	undefined
import().default	single-object-with-default-export.js	{ named, default }	'default'
x = require()	default-export.js	runtime error	{ default }
x = require()	default-export-esModule.js default-export-esm.js default-export-esm.mjs	runtime error	{ [__esModule], default }
x = require()	single-object-export.js	runtime error	{ named }
x = require()	single-object-with-default-export.js	runtime error	{ named, default }
x = require() await import() === require()	tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	syntax error
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js	runtime error	true
import * as x; x === await import()	default-export-esm.js	syntax error	true
import * as x; x === await import()	tla-esm.mjs	true	syntax error

node (.mjs) vs. vite (.mjs)

node (mjs) vs. vite (mjs)	fixture	node (mjs)	vite (mjs)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js	syntax error	'default'
import x import().default import * as x; x === await import()	tla-esModule.js tla-esm.js	syntax error	compilation error
import x import().default	tla-esm.mjs	'default'	compilation error
x = require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	not fully bundled
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js	runtime error	not fully bundled
await import() === require()	tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	compilation error
import * as x; x === await import()	default-export-esm.js	syntax error	true
import * as x; x === await import()	tla-esm.mjs	true	compilation error

node (.mjs) vs. vite (.js)

node (mjs) vs. vite (js)	fixture	node (mjs)	vite (js)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js	syntax error	'default'
import x import().default import * as x; x === await import()	tla-esModule.js tla-esm.js	syntax error	compilation error
import x import().default	tla-esm.mjs	'default'	compilation error
x = require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	not fully bundled
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js	runtime error	not fully bundled
await import() === require()	tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	compilation error
import * as x; x === await import()	default-export-esm.js	syntax error	true
import * as x; x === await import()	tla-esm.mjs	true	compilation error

node (.mjs) vs. vite (.js with "type": "module")

node (mjs) vs. vite (js-module)	fixture	node (mjs)	vite (js-module)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js	syntax error	'default'
import x import().default import * as x; x === await import()	tla-esModule.js tla-esm.js	syntax error	compilation error
import x import().default	tla-esm.mjs	'default'	compilation error
x = require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	not fully bundled
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js	runtime error	not fully bundled
await import() === require()	tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	compilation error
import * as x; x === await import()	default-export-esm.js	syntax error	true
import * as x; x === await import()	tla-esm.mjs	true	compilation error

node (.mjs) vs. vite (.mts)

node (mjs) vs. vite (mts)	fixture	node (mjs)	vite (mts)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js	syntax error	'default'
import x import().default import * as x; x === await import()	tla-esModule.js tla-esm.js	syntax error	compilation error
import x import().default	tla-esm.mjs	'default'	compilation error
x = require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	not fully bundled
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js	runtime error	not fully bundled
await import() === require()	tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	compilation error
import * as x; x === await import()	default-export-esm.js	syntax error	true
import * as x; x === await import()	tla-esm.mjs	true	compilation error

node (.mjs) vs. vite (.ts)

node (mjs) vs. vite (ts)	fixture	node (mjs)	vite (ts)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js	syntax error	'default'
import x import().default import * as x; x === await import()	tla-esModule.js tla-esm.js	syntax error	compilation error
import x import().default	tla-esm.mjs	'default'	compilation error
x = require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	not fully bundled
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js	runtime error	not fully bundled
await import() === require()	tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	compilation error
import * as x; x === await import()	default-export-esm.js	syntax error	true
import * as x; x === await import()	tla-esm.mjs	true	compilation error

node (.mjs) vs. vite (.ts with "type": "module")

node (mjs) vs. vite (ts-module)	fixture	node (mjs)	vite (ts-module)
import x import().default	default-export-esModule.js	{ [__esModule], default }	'default'
import x import().default	default-export-esm.js	syntax error	'default'
import x import().default import * as x; x === await import()	tla-esModule.js tla-esm.js	syntax error	compilation error
import x import().default	tla-esm.mjs	'default'	compilation error
x = require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	not fully bundled
await import() === require()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js	runtime error	not fully bundled
await import() === require()	tla-esModule.js tla-esm.js tla-esm.mjs	runtime error	compilation error
import * as x; x === await import()	default-export-esm.js	syntax error	true
import * as x; x === await import()	tla-esm.mjs	true	compilation error

node (.js) vs. node (.js with "type": "module")

node (js) vs. node (js-module)	fixture	node (js)	node (js-module)
import x import().default	default-export.js	syntax error	{ default }
import x import().default	default-export-esModule.js	syntax error	{ [__esModule], default }
import x import().default	default-export-esm.mjs tla-esm.mjs	syntax error	'default'
import x import().default	single-object-export.js	syntax error	{ named }
import x import().default	single-object-with-default-export.js	syntax error	{ named, default }
x = require()	default-export.js	{ default }	runtime error
x = require()	default-export-esModule.js	{ [__esModule], default }	runtime error
x = require() await import() === require()	default-export-esm.js tla-esModule.js tla-esm.js	syntax error	runtime error
x = require() await import() === require()	default-export-esm.mjs tla-esm.mjs	require(esm) not allowed	runtime error
x = require()	single-object-export.js	{ named }	runtime error
x = require()	single-object-with-default-export.js	{ named, default }	runtime error
await import() === require()	default-export.js default-export-esModule.js single-object-export.js single-object-with-default-export.js	false	runtime error
import * as x; x === await import()	default-export.js default-export-esModule.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js tla-esm.mjs	syntax error	true

node (.js) vs. bun (.mjs)

node (js) vs. bun (mjs)	fixture	node (js)	bun (mjs)
import x import().default	default-export.js	syntax error	{ default }
import x import().default	default-export-esModule.js default-export-esm.js default-export-esm.mjs tla-esm.js tla-esm.mjs	syntax error	'default'
import x import().default	single-object-export.js	syntax error	{ named }
import x import().default	single-object-with-default-export.js	syntax error	{ named, default }
import().default await import() === require() import * as x; x === await import()	tla-esModule.js	syntax error	runtime error
x = require()	default-export-esm.js	syntax error	{ [__esModule] }
x = require()	default-export-esm.mjs	require(esm) not allowed	{ [__esModule] }
x = require()	tla-esm.js	syntax error	type error
x = require()	tla-esm.mjs	require(esm) not allowed	type error
await import() === require()	default-export-esm.js tla-esm.js	syntax error	false
await import() === require()	default-export-esm.mjs tla-esm.mjs	require(esm) not allowed	false
import * as x; x === await import()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js tla-esm.js tla-esm.mjs	syntax error	true

node (.js) vs. bun (.js)

node (js) vs. bun (js)	fixture	node (js)	bun (js)
import x import().default	default-export.js	syntax error	{ default }
import x import().default	default-export-esModule.js default-export-esm.js default-export-esm.mjs tla-esm.js tla-esm.mjs	syntax error	'default'
import x import().default	single-object-export.js	syntax error	{ named }
import x import().default	single-object-with-default-export.js	syntax error	{ named, default }
import().default await import() === require() import * as x; x === await import()	tla-esModule.js	syntax error	runtime error
x = require()	default-export-esm.js	syntax error	{ [__esModule] }
x = require()	default-export-esm.mjs	require(esm) not allowed	{ [__esModule] }
x = require()	tla-esm.js	syntax error	type error
x = require()	tla-esm.mjs	require(esm) not allowed	type error
await import() === require()	default-export-esm.js tla-esm.js	syntax error	false
await import() === require()	default-export-esm.mjs tla-esm.mjs	require(esm) not allowed	false
import * as x; x === await import()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js tla-esm.js tla-esm.mjs	syntax error	true

node (.js) vs. bun (.js with "type": "module")

node (js) vs. bun (js-module)	fixture	node (js)	bun (js-module)
import x import().default	default-export.js	syntax error	{ default }
import x import().default	default-export-esModule.js default-export-esm.js default-export-esm.mjs tla-esm.js tla-esm.mjs	syntax error	'default'
import x import().default	single-object-export.js	syntax error	{ named }
import x import().default	single-object-with-default-export.js	syntax error	{ named, default }
import().default await import() === require() import * as x; x === await import()	tla-esModule.js	syntax error	runtime error
x = require()	default-export-esm.js	syntax error	{ [__esModule] }
x = require()	default-export-esm.mjs	require(esm) not allowed	{ [__esModule] }
x = require()	tla-esm.js	syntax error	type error
x = require()	tla-esm.mjs	require(esm) not allowed	type error
await import() === require()	default-export-esm.js tla-esm.js	syntax error	false
await import() === require()	default-export-esm.mjs tla-esm.mjs	require(esm) not allowed	false
import * as x; x === await import()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js tla-esm.js tla-esm.mjs	syntax error	true

node (.js) vs. bun (.mts)

node (js) vs. bun (mts)	fixture	node (js)	bun (mts)
import x import().default	default-export.js	syntax error	{ default }
import x import().default	default-export-esModule.js default-export-esm.js default-export-esm.mjs tla-esm.js tla-esm.mjs	syntax error	'default'
import x import().default	single-object-export.js	syntax error	{ named }
import x import().default	single-object-with-default-export.js	syntax error	{ named, default }
import().default await import() === require() import * as x; x === await import()	tla-esModule.js	syntax error	runtime error
x = require()	default-export-esm.js	syntax error	{ [__esModule] }
x = require()	default-export-esm.mjs	require(esm) not allowed	{ [__esModule] }
x = require()	tla-esm.js	syntax error	type error
x = require()	tla-esm.mjs	require(esm) not allowed	type error
await import() === require()	default-export-esm.js tla-esm.js	syntax error	false
await import() === require()	default-export-esm.mjs tla-esm.mjs	require(esm) not allowed	false
import * as x; x === await import()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js tla-esm.js tla-esm.mjs	syntax error	true

node (.js) vs. bun (.ts)

node (js) vs. bun (ts)	fixture	node (js)	bun (ts)
import x import().default	default-export.js	syntax error	{ default }
import x import().default	default-export-esModule.js default-export-esm.js default-export-esm.mjs tla-esm.js tla-esm.mjs	syntax error	'default'
import x import().default	single-object-export.js	syntax error	{ named }
import x import().default	single-object-with-default-export.js	syntax error	{ named, default }
import().default await import() === require() import * as x; x === await import()	tla-esModule.js	syntax error	runtime error
x = require()	default-export-esm.js	syntax error	{ [__esModule] }
x = require()	default-export-esm.mjs	require(esm) not allowed	{ [__esModule] }
x = require()	tla-esm.js	syntax error	type error
x = require()	tla-esm.mjs	require(esm) not allowed	type error
await import() === require()	default-export-esm.js tla-esm.js	syntax error	false
await import() === require()	default-export-esm.mjs tla-esm.mjs	require(esm) not allowed	false
import * as x; x === await import()	default-export.js default-export-esModule.js default-export-esm.js default-export-esm.mjs single-object-export.js single-object-with-default-export.js tla-esm.js tla-esm.mjs	syntax error	true

node (.js) vs. bun (.ts with "type": "module")

node (js) vs. bun (ts-module)	fixture	node (js)	bun (ts-module)
import x import().default	default-export.js	syntax error	{ default }
import x import().default	default-export-esModule.js default-export-esm.js default-export-esm.mjs tla-esm.js tla-esm.mjs	syntax error	'default'
import x import().default	single-object-export.js	syntax error	{ named }
import x import().default	single-object-with-default-export.js	syntax error	{ named, default }
import().default await import() === require() import * as x; x === await import()	tla-esModule.js	syntax error	runtime error
x = require()	default-export-esm.js	syntax error	{ [__esModule] }
x = require()	default-export-esm.mjs	require(esm) not allowed	{ [__esModule] }
x = require()	tla-esm.js	syntax error	type error
x = require()	tla-esm.mjs	require(esm) not allowed	type error
await import() === require()	default-export-esm.js tla-esm.js	syntax error