fix: swc-loader should not respect .swcrc (#12222)

* set swcrc to false

* Add test

* Update tests/rspack-test/configCases/builtin-swc-loader/swcrc/index.js

Co-authored-by: Copilot <[email protected]>

* Alert test case

* Clippy

---------

Co-authored-by: Copilot <[email protected]>

Author: CPunisher

crates/rspack_loader_swc/src/options.rs

@@ -187,6 +187,7 @@ impl TryFrom<&str> for SwcCompilerOptionsWithAdditional {
           schema,
           source_map_ignore_list,
         },
+        swcrc: false,
         ..serde_json::from_value(serde_json::Value::Object(Default::default()))?
       },
       rspack_experiments: rspack_experiments.unwrap_or_default().into(),
@@ -218,10 +219,9 @@ mod tests {
       swc_options_from_native_lib.env_name
     );
     assert_eq!(swc_options_from_rspack.cwd, swc_options_from_native_lib.cwd);
-    assert_eq!(
-      swc_options_from_rspack.swcrc,
-      swc_options_from_native_lib.swcrc
-    );
+
+    // We dont't want swc-loader in rspack to respect swcrc
+    assert!(!swc_options_from_rspack.swcrc);
   }
 
   #[test]

tests/rspack-test/configCases/builtin-swc-loader/swcrc/.swcrc

@@ -0,0 +1,6 @@
+{
+    "env": {},
+    "jsc": {
+        "target": "es2015"
+    }
+}

tests/rspack-test/configCases/builtin-swc-loader/swcrc/a.ts

@@ -0,0 +1 @@
+export const a = 42;

tests/rspack-test/configCases/builtin-swc-loader/swcrc/index.js

@@ -0,0 +1,4 @@
+it("should not respect .swcrc", () => {
+	const { a } = require("./a.ts");
+	expect(a).toBe(42);
+});

tests/rspack-test/configCases/builtin-swc-loader/swcrc/rspack.config.js

@@ -0,0 +1,26 @@
+/** @type {import("@rspack/core").Configuration} */
+module.exports = {
+	resolve: {
+		extensions: ["...", ".ts", ".tsx", ".jsx"]
+	},
+	module: {
+		rules: [
+			{
+				test: /\.ts$/,
+				use: [
+					{
+						loader: "builtin:swc-loader",
+						options: {
+							jsc: {
+								parser: {
+									syntax: "typescript"
+								}
+							}
+						}
+					}
+				],
+				type: "javascript/auto"
+			},
+		]
+	}
+};