Merge pull request #11602 from webpack/bugfix/shared-runtime-chunk

fix crash when using shared with runtimeChunk

lib/optimize/RuntimeChunkPlugin.js

@@ -25,6 +25,7 @@ class RuntimeChunkPlugin {
 			compilation.hooks.addEntry.tap(
 				"RuntimeChunkPlugin",
 				(_, { name: entryName }) => {
+					if (entryName === undefined) return;
 					const data = compilation.entries.get(entryName);
 					if (!data.options.runtime && !data.options.dependOn) {
 						// Determine runtime chunk name

test/configCases/sharing/provide-shared-with-runtime-chunk/index.js

@@ -0,0 +1,5 @@
+import x from "x";
+
+it("should work", () => {
+	expect(x).toBe(42);
+});

test/configCases/sharing/provide-shared-with-runtime-chunk/test.config.js

@@ -0,0 +1,5 @@
+module.exports = {
+	findBundle: function () {
+		return ["./runtime.js", "./main.js"];
+	}
+};

test/configCases/sharing/provide-shared-with-runtime-chunk/webpack.config.js

@@ -0,0 +1,15 @@
+const { ProvideSharedPlugin } = require("../../../../").sharing;
+/** @type {import("../../../../").Configuration} */
+module.exports = {
+	output: {
+		filename: "[name].js"
+	},
+	optimization: {
+		runtimeChunk: "single"
+	},
+	plugins: [
+		new ProvideSharedPlugin({
+			provides: ["x"]
+		})
+	]
+};