How to check typescript type before commit?

Question

I want to check typescript type before commit, So i use tsc --noEmit $(changedFile). However, This command can not specify config file.

I found --project option, But this option will check entire project and i just want to check changedFile, Because some old files has type error but do not need to handle.

So how can i only check changedFile type before commit ?

Answer 1

You can use an awesome tool called lint-staged.
This library lint your files before each commit. https://github.com/okonet/lint-staged

Installation

npx mrm lint-staged

Usage for TypeScript

// lint-staged.config.js
module.exports = {
  '**/*.ts?(x)': () => 'tsc -p tsconfig.json --noEmit'
}