fix: swc minimizer extracted comments should be stable (#6380)

crates/rspack_plugin_swc_js_minimizer/src/minify.rs

@@ -272,6 +272,7 @@ pub fn minify(
 
             // if not matched comments, we don't need to emit .License.txt file
             if !extracted_comments.is_empty() {
+              extracted_comments.sort();
               all_extract_comments
                 .lock()
                 .expect("all_extract_comments lock failed")

packages/rspack-test-tools/tests/__snapshots__/ConfigTestCases.test.js.snap

@@ -313,6 +313,28 @@ div {
 "
 `;
 
+exports[`ConfigTestCases optimization minimizer-swc-extract-comments exported tests should keep the extracted license file stable 1`] = `
+"/**
+ * bar
+ * @license MIT
+ */
+
+/**
+ * baz
+ * @license MIT
+ */
+
+/**
+ * foo
+ * @license MIT
+ */
+
+/**
+ * relative
+ * @license MIT
+ */"
+`;
+
 exports[`ConfigTestCases plugins chunk-modules exported tests chunk-modules 1`] = `
 Object {
   "515": Object {

packages/rspack-test-tools/tests/configCases/optimization/minimizer-swc-extract-comments/index.js

@@ -0,0 +1,9 @@
+const fs = require("fs")
+const path = require("path")
+it("should keep the extracted license file stable", () => {
+	require("foo")
+	require("bar")
+	require("baz")
+	require("./relative")
+	expect(fs.readFileSync(path.join(__dirname, "bundle0.js.LICENSE.txt"), "utf8")).toMatchSnapshot()
+})

packages/rspack-test-tools/tests/configCases/optimization/minimizer-swc-extract-comments/relative.js

@@ -0,0 +1,5 @@
+/**
+ * relative
+ * @license MIT
+ */
+module.exports = "relative"

packages/rspack-test-tools/tests/configCases/optimization/minimizer-swc-extract-comments/webpack.config.js

@@ -0,0 +1,18 @@
+const { SwcJsMinimizerRspackPlugin, SwcCssMinimizerRspackPlugin } = require("@rspack/core")
+
+/**
+ * @type {import("@rspack/core").Configuration}
+ */
+module.exports = {
+	optimization: {
+		minimize: true,
+		minimizer: [
+			new SwcJsMinimizerRspackPlugin({
+				extractComments: {},
+				format: {
+					comments: "all"
+				}
+			}),
+		]
+	}
+}