https://github.com/aelbore/esbuild-jest

A Jest transformer using esbuild
https://github.com/aelbore/esbuild-jest

esbuild javascript jest test transformer typescript

Last synced: 4 days ago
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A Jest transformer using esbuild

• Host: GitHub
• URL: https://github.com/aelbore/esbuild-jest
• Owner: aelbore
• Created: 2020-05-23T05:25:16.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2024-07-23T10:29:07.000Z (6 months ago)
• Last Synced: 2025-01-02T02:02:52.881Z (11 days ago)
• Topics: esbuild, javascript, jest, test, transformer, typescript
• Language: TypeScript
• Homepage:
• Size: 873 KB
• Stars: 519
• Watchers: 7
• Forks: 51
• Open Issues: 63
• Metadata Files:
  • Readme: README.md

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README

        
# esbuild-jest

### A Jest transformer using esbuild

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

[![npm](https://img.shields.io/npm/v/esbuild-jest.svg)](https://www.npmjs.com/package/esbuild-jest)

![build status](https://github.com/aelbore/esbuild-jest/actions/workflows/ci.yml/badge.svg)

## Install

```bash

npm install --save-dev esbuild-jest esbuild

```

#### Setting up Jest config file

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

```js

{

  "transform": {

    "^.+\\.tsx?$": "esbuild-jest"

  }

}

```

#### Setting up Jest config file with transformOptions

```typescript

export interface Options {

  jsxFactory?: string

  jsxFragment?: string

  sourcemap?: boolean | 'inline' | 'external'

  loaders?: {

    [ext: string]: Loader

  },

  target?: string

  format?: string

}

```

```js

{

  "transform": {

    "^.+\\.tsx?$": [ 

      "esbuild-jest", 

      { 

        sourcemap: true,

        loaders: {

          '.spec.ts': 'tsx'

        }

      } 

    ]

  }

}

```

> 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