esbuild-jest

A Jest transformer using esbuild

With this transformer you can use and transform (ts, js, tsx and jsx) files

Install

1npm install --save-dev esbuild-jest esbuild

Setting up Jest config file

esbuild-jest transformer should be used in your Jest config file like this:

1{
2  "transform": {
3    "^.+\\.tsx?$": "esbuild-jest"
4  }
5}

Setting up Jest config file with transformOptions

1export interface Options {
2  jsxFactory?: string
3  jsxFragment?: string
4  sourcemap?: boolean | 'inline' | 'external'
5  loaders?: {
6    [ext: string]: Loader
7  },
8  target?: string
9  format?: string
10}

1{
2  "transform": {
3    "^.+\\.tsx?$": [ 
4      "esbuild-jest", 
5      { 
6        sourcemap: true,
7        loaders: {
8          '.spec.ts': 'tsx'
9        }
10      } 
11    ]
12  }
13}

Note: if you are using tsconfig.json and jsconfig.json with "paths", Please look alias-hq and there documentation https://github.com/davestewart/alias-hq/blob/master/docs/integrations.md