wip

.eslintrc.js

@@ -50,6 +50,13 @@ module.exports = {
         'no-console': 'off',
       },
     },
+    {
+      files: ['packages/jest/lib/**/*.ts'],
+      rules: {
+        'import/no-default-export': 'off',
+        'import/no-named-as-default': 'off',
+      },
+    },
     {
       files: ['example/**/*'],
       rules: {

example/jest.config.js

@@ -1,3 +1,6 @@
 module.exports = {
   preset: 'react-native',
+  transform: {
+    '^.+\\.(tsx?|jsx?)$': '@react-native-esbuild/jest',
+  },
 };

example/package.json

@@ -42,6 +42,7 @@
     "@react-native-community/cli": "^11.3.6",
     "@react-native-community/cli-platform-android": "^11.3.6",
     "@react-native-esbuild/cli": "workspace:^",
+    "@react-native-esbuild/jest": "workspace:^",
     "@react-native/assets-registry": "^0.73.0",
     "@react-native/codegen": "^0.72.6",
     "@react-native/gradle-plugin": "^0.72.11",

packages/core/lib/bundler/bundler.ts

@@ -78,6 +78,10 @@ export class ReactNativeEsbuildBundler extends BundlerEventEmitter {
     }
   }
 
+  public static getConfig(): Config {
+    return getConfigFromGlobal();
+  }
+
   public static setGlobalLogLevel(logLevel: LogLevel): void {
     Logger.setGlobalLogLevel(logLevel);
   }
@@ -443,10 +447,6 @@ export class ReactNativeEsbuildBundler extends BundlerEventEmitter {
     return buildTask.handler.task;
   }
 
-  public getConfig(): Config {
-    return this.config;
-  }
-
   public getRoot(): string {
     return this.root;
   }

packages/jest/.gitignore

@@ -0,0 +1,2 @@
+# preset
+jest-preset.js

packages/jest/README.md

@@ -0,0 +1,14 @@
+# `@react-native-esbuild/jest`
+
+> react-native preset for jest powered by @react-native-esbuild
+
+## Usage
+
+```js
+exports.default = {
+  preset: 'react-native',
+  transform: {
+    '^.+\\.(jsx?|tsx?)$': '@react-native-esbuild/jest',
+  },
+};
+```

packages/jest/build/index.js

@@ -0,0 +1,9 @@
+const esbuild = require('esbuild');
+const { getEsbuildBaseOptions } = require('../../../shared');
+
+const buildOptions = getEsbuildBaseOptions(__dirname);
+
+esbuild.build(buildOptions).catch((error) => {
+  console.error(error);
+  process.exit(1);
+});

packages/jest/lib/index.ts

@@ -0,0 +1,10 @@
+import type { TransformerFactory } from '@jest/transform';
+import { ReactNativeEsbuildJestTransformer } from './transformer';
+
+const factory: TransformerFactory<ReactNativeEsbuildJestTransformer> = {
+  createTransformer() {
+    return new ReactNativeEsbuildJestTransformer();
+  },
+};
+
+export default factory;

packages/jest/lib/transformer/ReactNativeEsbuildJestTransformer.ts

@@ -0,0 +1,44 @@
+import type { TransformOptions, TransformedSource } from '@jest/transform';
+import { ReactNativeEsbuildBundler } from '@react-native-esbuild/core';
+import { SyncTransformPipeline } from '@react-native-esbuild/transformer';
+import { getReactNativeInitializeCore } from '@react-native-esbuild/internal';
+import type { JestTransformer } from '../types';
+
+const DUMMY_ESBUILD_VALUE = '';
+
+ReactNativeEsbuildBundler.bootstrap();
+
+export class ReactNativeEsbuildJestTransformer implements JestTransformer {
+  private root = process.cwd();
+  private transformPipeline: SyncTransformPipeline;
+  public canInstrument = false;
+
+  constructor() {
+    const { transformer } = ReactNativeEsbuildBundler.getConfig();
+    this.transformPipeline = new SyncTransformPipeline.builder(this.root, '')
+      .setInjectScripts([getReactNativeInitializeCore(this.root)])
+      .setFullyTransformPackages(transformer?.fullyTransformPackageNames ?? [])
+      .setStripFlowPackages(transformer?.stripFlowPackageNames ?? [])
+      .setAdditionalBabelTransformRules(
+        transformer?.additionalTransformRules?.babel ?? [],
+      )
+      .setAdditionalSwcTransformRules(
+        transformer?.additionalTransformRules?.swc ?? [],
+      )
+      .build();
+  }
+
+  process(
+    code: string,
+    path: string,
+    _options: TransformOptions,
+  ): TransformedSource {
+    const transformResult = this.transformPipeline.transform(code, {
+      path,
+      pluginData: DUMMY_ESBUILD_VALUE,
+      namespace: DUMMY_ESBUILD_VALUE,
+      suffix: DUMMY_ESBUILD_VALUE,
+    });
+    return { code: transformResult.code };
+  }
+}

packages/jest/lib/transformer/index.ts

@@ -0,0 +1 @@
+export * from './ReactNativeEsbuildJestTransformer';

packages/jest/lib/types.ts

@@ -0,0 +1,4 @@
+import type { SyncTransformer } from '@jest/transform';
+import type { Config } from '@react-native-esbuild/core';
+
+export type JestTransformer = SyncTransformer<Config>;

packages/jest/package.json

@@ -0,0 +1,57 @@
+{
+  "name": "@react-native-esbuild/jest",
+  "version": "0.1.0-beta.9",
+  "description": "react-native preset for jest powered by @react-native-esbuild",
+  "keywords": [
+    "react-native",
+    "esbuild",
+    "jest"
+  ],
+  "author": "leegeunhyeok <[email protected]>",
+  "homepage": "https://github.com/leegeunhyeok/react-native-esbuild#readme",
+  "license": "MIT",
+  "type": "commonjs",
+  "module": "lib/index.ts",
+  "main": "dist/index.js",
+  "types": "dist/lib/index.d.ts",
+  "exports": {
+    ".": "./dist/index.js",
+    "./preset": "./jest-preset.js"
+  },
+  "directories": {
+    "lib": "lib",
+    "test": "__tests__"
+  },
+  "files": [
+    "lib",
+    "dist",
+    "jest-preset.js"
+  ],
+  "publishConfig": {
+    "access": "public"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/leegeunhyeok/react-native-esbuild.git"
+  },
+  "scripts": {
+    "prepack": "yarn cleanup && yarn build",
+    "cleanup": "rimraf ./dist",
+    "build": "node build/index.js && tsc"
+  },
+  "bugs": {
+    "url": "https://github.com/leegeunhyeok/react-native-esbuild/issues"
+  },
+  "peerDependencies": {
+    "react-native": "*"
+  },
+  "dependencies": {
+    "@react-native-esbuild/core": "workspace:*",
+    "@react-native-esbuild/internal": "workspace:^",
+    "@react-native-esbuild/transformer": "workspace:*"
+  },
+  "devDependencies": {
+    "@jest/transform": "^29.7.0",
+    "esbuild": "^0.19.5"
+  }
+}

packages/jest/tsconfig.json

@@ -0,0 +1,11 @@
+{
+  "extends": "../../tsconfig.json",
+  "compilerOptions": {
+    "rootDir": ".",
+    "outDir": "./dist",
+    "declaration": true,
+    "emitDeclarationOnly": true
+  },
+  "include": ["./lib"],
+  "exclude": ["./dist"]
+}

yarn.lock

@@ -4938,7 +4938,7 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"@react-native-esbuild/internal@workspace:*, @react-native-esbuild/internal@workspace:packages/internal":
+"@react-native-esbuild/internal@workspace:*, @react-native-esbuild/internal@workspace:^, @react-native-esbuild/internal@workspace:packages/internal":
   version: 0.0.0-use.local
   resolution: "@react-native-esbuild/internal@workspace:packages/internal"
   dependencies:
@@ -4948,6 +4948,20 @@ __metadata:
   languageName: unknown
   linkType: soft
 
+"@react-native-esbuild/jest@workspace:^, @react-native-esbuild/jest@workspace:packages/jest":
+  version: 0.0.0-use.local
+  resolution: "@react-native-esbuild/jest@workspace:packages/jest"
+  dependencies:
+    "@jest/transform": ^29.7.0
+    "@react-native-esbuild/core": "workspace:*"
+    "@react-native-esbuild/internal": "workspace:^"
+    "@react-native-esbuild/transformer": "workspace:*"
+    esbuild: ^0.19.5
+  peerDependencies:
+    react-native: "*"
+  languageName: unknown
+  linkType: soft
+
 "@react-native-esbuild/plugins@workspace:*, @react-native-esbuild/plugins@workspace:packages/plugins":
   version: 0.0.0-use.local
   resolution: "@react-native-esbuild/plugins@workspace:packages/plugins"
@@ -11322,6 +11336,7 @@ __metadata:
     "@react-native-community/cli": ^11.3.6
     "@react-native-community/cli-platform-android": ^11.3.6
     "@react-native-esbuild/cli": "workspace:^"
+    "@react-native-esbuild/jest": "workspace:^"
     "@react-native/assets-registry": ^0.73.0
     "@react-native/codegen": ^0.72.6
     "@react-native/gradle-plugin": ^0.72.11