sablejs

🏖️ The safer and faster ECMA5.1 interpreter written by JavaScript, it can be used:

Sandbox(like Figma Plugin Sandbox, but better and easy to use);
Mini Program/Game JavaScript dynamic execution;
Protect JavaScript source code via AOT compiling to opcode;

Usage

sablejs separates the Compiler and Interpreter independently, so we removed the dynamic related api from the spec(see Limits 1). In short, you need to compile your JavaScript code with sablejs cli before you run it.

Compiler

> npm i sablejs -g
> sablejs -i input.js -o output # get output file that contains base64 string

sablejs cli contains the following commands:

Usage: sablejs [options]

Options:
  -v, --vers           output the current version
  -i, --input <path>   compile input filepath
  -o, --output <path>  compile output filepath
  -s, --slient         dont output log
  -h, --help

Interpreter

> npm install sablejs --save

or you can import to your html directly:

<script src="https://cdn.jsdelivr.net/npm/sablejs@0.31.0/runtime.js"></script>

Browser

const VM = require("sablejs/runtime")();
(async () => {
  const resp = await fetch("<output url>");
  const data = await resp.text();
  const vm = new VM();
  vm.run(data);
  vm.destroy();
})();

Node

const fs = require('fs');
const data = fs.readFileSync("<output filepath>").toString();
const VM = require('sablejs/runtime')();
const vm = new VM();
vm.run(data);
vm.destroy();

API

It will be coming soon...

Benchmark

sablejs may be the fastest interpreter written by JavaScript (using v8 benchmark suites):

Benchmark Enviorment:

Node.js v12.19.0

Golang 1.15.6

GCC 5.4.0 -O3

2.4 GHz Intel Core i9

MacOS Mojave 10.14.6 (18G6032)

	sable.js	sval	eval5	quickjs-wasm	goja
Language	JavaScript	JavaScript	JavaScript	C + WebAssembly	Golang
Richards	110	24.9	24.7	376	208
Crypto	114	24.6	20.2	400	104
RayTrace	258	92.2	98.5	471	294
NavierStokes	183	35.9	49.8	665	191
DeltaBlue	120	35.3	29.5	402	276
Total score	148	37.3	37.3	452	202
Baseline	1	▼ 2.96	▼ 2.96	▲ 2.05	▲ 0.36
File Size(KB)	207	152	134	434	-
Gzip Size(KB)	29	40	34	245	-

Limits

Dynamic execution of eval and Function is forbidden, but passing of literal string/number/null and undefined is allowed(the interpreter doesn't contain any compiler).

eval("print('Hello World!')"); // it's ok
eval("var " + "a=1"); // it's ok

var str = "Hello World!";
eval("print('" + str +"')"); // throw SyntaxError

Function("a","b","return a+b"); // it's ok
new Function("a", "b", "return a+b") // it's ok

var str = "return a+b";
Function("a","b", str); // throw SyntaxError
new Function("a","b", str); // throw SyntaxError

License

sablejs JavaScript Engine

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

Non-profit projects of individuals or organizations and commercial projects with commercial authorization of the author.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

FishOrBear / sablejs