depatcher

Programmatically create and apply .patch files to your project's dependencies.
Under the hood, it leverages diff to generate diffs and package manager primitives to apply them.

Note: diff is bundled to support the patch cross package managers.

⚙️ Installation

Install as a development dependency:

Package Manager	Command
npm	npm install -D depatcher
yarn	yarn add -D depatcher
pnpm	pnpm add -D depatcher

📖 Usage

createPatch

Generates a .patch file by comparing an original file with a modified (patched) file.

import { createPatch } from 'depatcher'

createPatch(
  './original_file.js',
  './patched_file.js',
  './file.patch'
)

applyPatch

Applies .patch files to specific file paths within a target dependency.

import { applyPatch } from 'depatcher'

// applyPatch(packageName, patchMap)
await applyPatch('packageName', {
  // 'target_file_in_dependency': 'path_to_patch_file'
  '/dist/index.js': './packageName_index.patch'
})

applyPatchMultiple

Applies .patch files to multiple target dependencies efficiently.

import { applyPatchMultiple } from 'depatcher'

// applyPatchMultiple(packagePatchMap)
await applyPatchMultiple({
  packageName1: {
    '/dist/index.js': './packageName1_index.patch'
  },
  packageName2: {
    '/dist/index.js': './packageName2_index.patch'
  }
})

🔄 TODO

• npm patch support

📜 License

This project is licensed under the MIT License.