From 1146efa23ea431b64a7cf8ade7a9dcff1f78d395 Mon Sep 17 00:00:00 2001
From: hanseltime <hanseltime@gmail.com>
Date: Tue, 3 Dec 2024 13:18:42 -0700
Subject: [PATCH] fix adding swc configuration file support as an option

---
 src/configuration.ts   |  2 ++
 src/index.ts           |  7 +++++++
 src/transpilers/swc.ts | 16 ++++++++++++++--
 website/docs/swc.md    | 11 +++++++++++
 4 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/src/configuration.ts b/src/configuration.ts
index b5b36c1c4..478162bc9 100644
--- a/src/configuration.ts
+++ b/src/configuration.ts
@@ -364,6 +364,7 @@ function filterRecognizedTsConfigTsNodeOptions(jsonObject: any): {
     moduleTypes,
     experimentalReplAwait,
     swc,
+    swcConfig,
     experimentalResolver,
     esm,
     experimentalSpecifierResolution,
@@ -391,6 +392,7 @@ function filterRecognizedTsConfigTsNodeOptions(jsonObject: any): {
     scopeDir,
     moduleTypes,
     swc,
+    swcConfig,
     experimentalResolver,
     esm,
     experimentalSpecifierResolution,
diff --git a/src/index.ts b/src/index.ts
index 894c17dba..7b8dac5b6 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -217,6 +217,13 @@ export interface CreateOptions {
    * For complete instructions: https://typestrong.org/ts-node/docs/transpilers
    */
   swc?: boolean;
+  /**
+   * If using swc as the compiler, this will look for the swc configuration file either at the path
+   * specified, or using the default .swcrc lookup mechanism of swc if set to true
+   *
+   * It will look for nothing if set to false.
+   */
+  swcConfig?: boolean | string;
   /**
    * Paths which should not be compiled.
    *
diff --git a/src/transpilers/swc.ts b/src/transpilers/swc.ts
index ea41d534c..f3c6d3c25 100644
--- a/src/transpilers/swc.ts
+++ b/src/transpilers/swc.ts
@@ -13,6 +13,16 @@ export interface SwcTranspilerOptions extends CreateTranspilerOptions {
    * Default: '@swc/core', falling back to '@swc/wasm'
    */
   swc?: string | typeof swcWasm;
+
+  /**
+   * This will look for the swc configuration file either at the path
+   * specified, or using the default .swcrc lookup mechanism of swc if set to true
+   *
+   * It will look for nothing if set to false.
+   *
+   * Default: false
+   */
+  swcConfig?: boolean | string;
 }
 
 export function create(createOptions: SwcTranspilerOptions): Transpiler {
@@ -127,7 +137,8 @@ export function createSwcOptions(
   compilerOptions: ts.CompilerOptions,
   nodeModuleEmitKind: NodeModuleEmitKind | undefined,
   swcInstance: SwcInstance,
-  swcDepName: string
+  swcDepName: string,
+  swcConfig?: SwcTranspilerOptions['swcConfig']
 ) {
   const {
     esModuleInterop,
@@ -219,7 +230,8 @@ export function createSwcOptions(
               : {}),
           }
         : undefined,
-      swcrc: false,
+      swcrc: swcConfig === true ? swcConfig : false,
+      configFile: typeof swcConfig === 'string' ? swcConfig : undefined,
       jsc: {
         externalHelpers: importHelpers,
         parser: {
diff --git a/website/docs/swc.md b/website/docs/swc.md
index e64646b12..876d1b6eb 100644
--- a/website/docs/swc.md
+++ b/website/docs/swc.md
@@ -22,4 +22,15 @@ Then add the following to your `tsconfig.json`.
 }
 ```
 
+Note, if you are using a swc configuration file, you can tell ts-node to load the file by supplying the swcConfig argument:
+
+```json title="tsconfig.json"
+{
+  "ts-node": {
+    "swc": true,
+    "swcConfig": ".development.scwrc"
+  }
+}
+```
+
 > SWC uses `@swc/helpers` instead of `tslib`.  If you have enabled `importHelpers`, you must also install `@swc/helpers`.