From 3538601bc1be7782f3daf174835958295adceef3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Eray=20Hano=C4=9Flu?= <e.hanoglu@panates.com>
Date: Fri, 23 Aug 2024 17:50:17 +0300
Subject: [PATCH 1/2] Added `tsconfig` option to configuration to allow setting
 tsconfig file path to be used.

---
 packages/jest/README.md    |  1 +
 packages/jest/index.ts     | 28 ++++++++++++++++++----------
 packages/jest/package.json |  3 ++-
 pnpm-lock.yaml             |  3 +++
 4 files changed, 24 insertions(+), 11 deletions(-)

diff --git a/packages/jest/README.md b/packages/jest/README.md
index d848cb0b4..c4da65c7f 100644
--- a/packages/jest/README.md
+++ b/packages/jest/README.md
@@ -30,6 +30,7 @@ module.exports = {
 
       // configuration
       {
+        tsconfig: '<rootDir>/tsconfig-test.json',
         dynamicImport: true,
         react: {
           pragma: 'h',
diff --git a/packages/jest/index.ts b/packages/jest/index.ts
index 1068bb289..b8830ba3c 100644
--- a/packages/jest/index.ts
+++ b/packages/jest/index.ts
@@ -1,37 +1,45 @@
 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),
+        ...tsCompilerOptionsToSwcConfig(tsConfigObject, path),
         ...getJestTransformConfig(jestConfig),
       })
     }
diff --git a/packages/jest/package.json b/packages/jest/package.json
index 852e56cf2..d7b19a6ad 100644
--- a/packages/jest/package.json
+++ b/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",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index c6ea31199..5a189538f 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -204,6 +204,9 @@ importers:
         specifier: '>= 5.0'
         version: 5.5.4
     devDependencies:
+      '@jest/transform':
+        specifier: ^29.7.0
+        version: 29.7.0
       '@swc/core':
         specifier: ^1.6.6
         version: 1.7.12(@swc/helpers@0.5.12)

From 4e69dd376f9aaf2f109665fc03ca816b4a8bf593 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Eray=20Hano=C4=9Flu?= <e.hanoglu@panates.com>
Date: Fri, 23 Aug 2024 17:54:28 +0300
Subject: [PATCH 2/2] Added `tsconfig` option to configuration to allow setting
 tsconfig file path to be used.

---
 packages/jest/index.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/jest/index.ts b/packages/jest/index.ts
index b8830ba3c..aaf08b5f3 100644
--- a/packages/jest/index.ts
+++ b/packages/jest/index.ts
@@ -40,7 +40,7 @@ export = {
       const tsConfigObject = readDefaultTsConfig(tsconfig)
       return transformJest(src, path, {
         ...tsCompilerOptionsToSwcConfig(tsConfigObject, path),
-        ...getJestTransformConfig(jestConfig),
+        ...transformerConfig,
       })
     }
     return src