jtbandes / ts-prune

Find unused exports in a typescript project. 🛀

ts-prune

Remove unused exports in your Typescript project with zero configuration.

Getting Started

ts-prune exposes a cli that reads your tsconfig file and prints out all the unused exports in your source files.

Installing

Install ts-prune with yarn or npm

npm install ts-prune -g

Usage

ts-prune

Or you can install it in your project and alias it to a npm script in package.json.

  "scripts": {
    "find-deadcode": "ts-prune"
  }

If you want to run against different Typescript configuration than tsconfig.json:

ts-prune -p tsconfig.dev.json

Configuration

ts-prune supports CLI and file configuration via cosmiconfig (all file formats are supported).

Configuration options

• -p, --project - tsconfig.json path(tsconfig.json by default)
• -i, --ignore - errors ignore RegExp pattern
• -e, --error - return error code if unused exports are found

CLI configuration options:

ts-prune -p my-tsconfig.json -i my-component-ignore-patterns?

Configuration file example ts-prunerc:

{
  "ignore": "my-component-ignore-patterns?"
}

FAQ

How do I get the count of unused exports?

ts-prune | wc -l

How do I ignore a specific path?

ts-prune | grep -v src/ignore-this-path

How do I ignore a specific identifier?

You can either,

1. Prefix the export with // ts-prune-ignore-next

// ts-prune-ignore-next
export const thisNeedsIgnoring = foo;

2. Use grep -v to ignore a more widely used export name

ts-prune | grep -v ignoreThisThroughoutMyCodebase

Acknowledgements

• The excellent ts-morph library. And this gist by @dsherret.

Licence

MIT