avoid injection jsonpScriptSrc function when not needed

sokra · sokra · commit 0a6ba9552ead · 2018-05-04T12:47:27.000+02:00
fixes webpack#7185
diff --git a/lib/web/JsonpMainTemplatePlugin.js b/lib/web/JsonpMainTemplatePlugin.js
@@ -108,9 +108,9 @@ class JsonpMainTemplatePlugin {
 		mainTemplate.hooks.localVars.tap(
 			"JsonpMainTemplatePlugin",
 			(source, chunk, hash) => {
+				const extraCode = [];
 				if (needChunkLoadingCode(chunk)) {
-					return Template.asString([
-						source,
+					extraCode.push(
 						"",
 						"// object to store loaded and loading chunks",
 						"// undefined = chunk not loaded, null = chunk preloaded/prefetched",
@@ -120,6 +120,12 @@ class JsonpMainTemplatePlugin {
 							chunk.ids.map(id => `${JSON.stringify(id)}: 0`).join(",\n")
 						),
 						"};",
+						"",
+						needEntryDeferringCode(chunk) ? "var deferredModules = [];" : ""
+					);
+				}
+				if (needChunkOnDemandLoadingCode(chunk)) {
+					extraCode.push(
 						"",
 						"// script path function",
 						"function jsonpScriptSrc(chunkId) {",
@@ -130,12 +136,11 @@ class JsonpMainTemplatePlugin {
 								"chunkId"
 							)}`
 						]),
-						"}",
-						"",
-						needEntryDeferringCode(chunk) ? "var deferredModules = [];" : ""
-					]);
+						"}"
+					);
 				}
-				return source;
+				if (extraCode.length === 0) return source;
+				return Template.asString([source, ...extraCode]);
 			}
 		);
 
diff --git a/test/__snapshots__/StatsTestCases.test.js.snap b/test/__snapshots__/StatsTestCases.test.js.snap
@@ -615,7 +615,7 @@ exports[`StatsTestCases should print correct stats for commons-chunk-min-size-0
 Time: Xms
 Built at: Thu Jan 01 1970 00:00:00 GMT
               Asset       Size  Chunks             Chunk Names
-         entry-1.js   5.79 KiB       0  [emitted]  entry-1
+         entry-1.js   5.62 KiB       0  [emitted]  entry-1
 vendor-1~entry-1.js  314 bytes       1  [emitted]  vendor-1~entry-1
 Entrypoint entry-1 = vendor-1~entry-1.js entry-1.js
 [0] ./entry-1.js 145 bytes {0} [built]
@@ -632,7 +632,7 @@ exports[`StatsTestCases should print correct stats for commons-chunk-min-size-In
 Time: Xms
 Built at: Thu Jan 01 1970 00:00:00 GMT
       Asset       Size  Chunks             Chunk Names
- entry-1.js   5.79 KiB       0  [emitted]  entry-1
+ entry-1.js   5.62 KiB       0  [emitted]  entry-1
 vendor-1.js  314 bytes       1  [emitted]  vendor-1
 Entrypoint entry-1 = vendor-1.js entry-1.js
 [0] ./entry-1.js 145 bytes {0} [built]
@@ -651,7 +651,7 @@ Child
     Time: Xms
     Built at: Thu Jan 01 1970 00:00:00 GMT
                              Asset       Size  Chunks             Chunk Names
-                            app.js    5.9 KiB       0  [emitted]  app
+                            app.js   5.71 KiB       0  [emitted]  app
     vendor.6a3bdffda9f0de672978.js  619 bytes       1  [emitted]  vendor
     Entrypoint app = vendor.6a3bdffda9f0de672978.js app.js
     [./constants.js] 87 bytes {1} [built]
@@ -664,7 +664,7 @@ Child
     Time: Xms
     Built at: Thu Jan 01 1970 00:00:00 GMT
                              Asset       Size  Chunks             Chunk Names
-                            app.js   5.92 KiB       0  [emitted]  app
+                            app.js   5.72 KiB       0  [emitted]  app
     vendor.6a3bdffda9f0de672978.js  619 bytes       1  [emitted]  vendor
     Entrypoint app = vendor.6a3bdffda9f0de672978.js app.js
     [./constants.js] 87 bytes {1} [built]
@@ -1321,7 +1321,7 @@ exports[`StatsTestCases should print correct stats for named-chunks-plugin 1`] =
 Time: Xms
 Built at: Thu Jan 01 1970 00:00:00 GMT
     Asset       Size  Chunks             Chunk Names
- entry.js   5.64 KiB   entry  [emitted]  entry
+ entry.js   5.47 KiB   entry  [emitted]  entry
 vendor.js  269 bytes  vendor  [emitted]  vendor
 Entrypoint entry = vendor.js entry.js
 [./entry.js] 72 bytes {entry} [built]
diff --git a/test/configCases/split-chunks/runtime-chunk-no-async/index.js b/test/configCases/split-chunks/runtime-chunk-no-async/index.js
@@ -0,0 +1 @@
+it("should compile and evaluate fine", () => {});
diff --git a/test/configCases/split-chunks/runtime-chunk-no-async/test.config.js b/test/configCases/split-chunks/runtime-chunk-no-async/test.config.js
@@ -0,0 +1,7 @@
+const fs = require("fs");
+module.exports = {
+	findBundle: function(i, options) {
+		var files = fs.readdirSync(options.output.path);
+		return ["runtime.js", files.filter(f => /^main/.test(f))[0]];
+	}
+};
diff --git a/test/configCases/split-chunks/runtime-chunk-no-async/webpack.config.js b/test/configCases/split-chunks/runtime-chunk-no-async/webpack.config.js
@@ -0,0 +1,13 @@
+module.exports = {
+	entry: {
+		main: "./index"
+	},
+	target: "web",
+	output: {
+		filename: "[name].js",
+		chunkFilename: "main.[contenthash:8].js"
+	},
+	optimization: {
+		runtimeChunk: "single"
+	}
+};

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+it("should compile and evaluate fine", () => {});`