Don’t save original source code

Reviewed By: jeanlauliac

Differential Revision: D5901918

fbshipit-source-id: 68332b07f34ac4fd5491868cbc9f81283dae8d91

packages/metro-bundler/src/JSTransformer/worker/__tests__/minify-test.js

@@ -42,7 +42,7 @@ describe('Minification:', () => {
       objectContaining({
         sourceMap: {
           content: map,
-          includeSources: true,
+          includeSources: false,
         },
       }),
     );
@@ -55,7 +55,7 @@ describe('Minification:', () => {
       objectContaining({
         sourceMap: {
           content: undefined,
-          includeSources: true,
+          includeSources: false,
         },
       }),
     );

packages/metro-bundler/src/JSTransformer/worker/minify.js

@@ -46,7 +46,7 @@ function minify(inputCode: string, inputMap: ?MappingsMap) {
     },
     sourceMap: {
       content: inputMap,
-      includeSources: true,
+      includeSources: false,
     },
     toplevel: true,
   });

packages/metro-bundler/src/ModuleGraph/types.flow.js

@@ -133,7 +133,6 @@ export type TransformResults = {[string]: TransformResult};
 export type TransformVariants = {+[name: string]: {}, +default: {}};
 
 export type TransformedCodeFile = {
-  +code: string,
   +file: string,
   +hasteID: ?string,
   package?: PackageData,

packages/metro-bundler/src/ModuleGraph/worker/generate.js

@@ -22,7 +22,7 @@ function generate(
   sourceCode: string,
   compact: boolean,
 ) {
-  return babelGenerate(
+  const generated = babelGenerate(
     ast,
     {
       comments: false,
@@ -34,6 +34,9 @@ function generate(
     },
     sourceCode,
   );
+
+  delete generated.map.sourcesContent;
+  return generated;
 }
 
 module.exports = generate;

packages/metro-bundler/src/ModuleGraph/worker/optimize-module.js

@@ -43,17 +43,12 @@ function optimizeModule(
   }
 
   const {details} = data;
-  const {code, file, transformed} = details;
+  const {file, transformed} = details;
   const result = {...details, transformed: {}};
   const {postMinifyProcess} = optimizationOptions;
 
   Object.entries(transformed).forEach(([k, t: TransformResult]) => {
-    const optimized = optimize(
-      (t: $FlowFixMe),
-      file,
-      code,
-      optimizationOptions,
-    );
+    const optimized = optimize((t: $FlowFixMe), file, optimizationOptions);
     const processed = postMinifyProcess({
       code: optimized.code,
       map: optimized.map,
@@ -66,7 +61,7 @@ function optimizeModule(
   return {type: 'code', details: result};
 }
 
-function optimize(transformed: TransformResult, file, originalCode, options) {
+function optimize(transformed: TransformResult, file, options) {
   const {code, dependencyMapName, map} = transformed;
   const optimized = optimizeCode(code, map, file, options);
 
@@ -82,7 +77,7 @@ function optimize(transformed: TransformResult, file, originalCode, options) {
   }
 
   const inputMap = transformed.map;
-  const gen = generate(optimized.ast, file, originalCode, true);
+  const gen = generate(optimized.ast, file, '', true);
 
   const min = minify.withSourceMap(
     gen.code,