Added tsconfig option to configuration

packages/jest/README.md

@@ -30,6 +30,7 @@ module.exports = {
 
  // configuration
  {
+ tsconfig: '<rootDir>/tsconfig-test.json',
  dynamicImport: true,
  react: {
  pragma: 'h',

packages/jest/index.ts

@@ -1,38 +1,46 @@
 import { xxh64 } from '@node-rs/xxhash'
 import type { Output } from '@swc/core'
+import type { TransformOptions } from '@jest/transform'
 import { Options, transformJest } from '@swc-node/core'
 import { readDefaultTsConfig, tsCompilerOptionsToSwcConfig } from '@swc-node/register/read-default-tsconfig'
 
-interface JestConfig26 {
- transform: [match: string, transformerPath: string, options: Options][]
+interface TransformerConfig extends Options {
+ tsconfig?: string
 }
 
-interface JestConfig27 {
- transformerConfig: Options
+interface JestConfig26 extends TransformOptions {
+ transform: [match: string, transformerPath: string, options: TransformerConfig][]
 }
 
-function getJestTransformConfig(jestConfig: JestConfig26 | JestConfig27): Options {
+type JestConfig27 = TransformOptions<TransformerConfig>
+
+function getJestTransformConfig(jestConfig: JestConfig26 | JestConfig27): TransformerConfig {
  if ('transformerConfig' in jestConfig) {
  // jest 27
- return jestConfig.transformerConfig
+ return (jestConfig as JestConfig27).transformerConfig
  }
 
  if ('transform' in jestConfig) {
  // jest 26
- return jestConfig.transform.find(([, transformerPath]) => transformerPath === __filename)?.[2] ?? {}
+ return (
+ (jestConfig as JestConfig26).transform.find(([, transformerPath]) => transformerPath === __filename)?.[2] ?? {}
+ )
  }
 
  return {}
 }
 
-const defaultTsConfig = readDefaultTsConfig()
-
 export = {
  process(src: string, path: string, jestConfig: JestConfig26 | JestConfig27): Output | string {
  if (/\.(tsx?|jsx?|mjs)$/.test(path)) {
+ const transformerConfig = getJestTransformConfig(jestConfig)
+ const tsconfig = transformerConfig.tsconfig
+ ? transformerConfig.tsconfig.replace('<rootDir>', jestConfig.config.rootDir)
+ : undefined
+ const tsConfigObject = readDefaultTsConfig(tsconfig)
  return transformJest(src, path, {
- ...tsCompilerOptionsToSwcConfig(defaultTsConfig, path),
- ...getJestTransformConfig(jestConfig),
+ ...tsCompilerOptionsToSwcConfig(tsConfigObject, path),
+ ...transformerConfig,
  })
  }
  return src

packages/jest/package.json

@@ -38,7 +38,8 @@
  },
  "devDependencies": {
  "@swc/core": "^1.6.6",
- "@swc/types": "^0.1.9"
+ "@swc/types": "^0.1.9",
+ "@jest/transform": "^29.7.0"
  },
  "repository": {
  "type": "git",