packager: Module: remove dead cacheTransformResults option

Reviewed By: davidaurelio

Differential Revision: D4884343

fbshipit-source-id: ae29757690d9b56d6f166bc86573aca9b1b6b65c

packages/metro-bundler/src/Resolver/index.js

@@ -69,7 +69,6 @@ class Resolver {
           (opts.blacklistRE != null && opts.blacklistRE.test(filepath));
       },
       moduleOptions: {
-        cacheTransformResults: true,
         hasteImpl: opts.hasteImpl,
         resetCache: opts.resetCache,
       },

packages/metro-bundler/src/node-haste/Module.js

@@ -61,7 +61,6 @@ export type HasteImpl = {
 };
 
 export type Options = {
-  cacheTransformResults?: boolean,
   hasteImpl?: HasteImpl,
   resetCache?: boolean,
 };
@@ -246,17 +245,8 @@ class Module {
   /**
    * To what we read from the cache or worker, we need to add id and source.
    */
-  _finalizeReadResult(
-    source: string,
-    result: TransformedCode,
-  ): ReadResult {
-    const id = this._getHasteName();
-    if (this._options.cacheTransformResults === false) {
-      const {dependencies} = result;
-      /* $FlowFixMe: this code path is dead, remove. */
-      return {dependencies};
-    }
-    return {...result, id, source};
+  _finalizeReadResult(source: string, result: TransformedCode): ReadResult {
+    return {...result, id: this._getHasteName(), source};
   }
 
   _transformCodeForCallback(

packages/metro-bundler/src/node-haste/__tests__/DependencyGraph-test.js

@@ -76,7 +76,7 @@ describe('DependencyGraph', function() {
       useWatchman: false,
       ignoreFilePath: () => false,
       maxWorkerCount: 1,
-      moduleOptions: {cacheTransformResults: true},
+      moduleOptions: {},
       resetCache: true,
       transformCode: (module, sourceCode, transformOptions) => {
         return new Promise(resolve => {

packages/metro-bundler/src/node-haste/__tests__/Module-test.js

@@ -60,9 +60,7 @@ describe('Module', () => {
   let transformCacheKey;
   const createModule = options =>
     new Module({
-      options: {
-        cacheTransformResults: true,
-      },
+      options: {},
       transformCode: (module, sourceCode, transformOptions) => {
         return Promise.resolve({code: sourceCode});
       },
@@ -258,26 +256,6 @@ describe('Module', () => {
       });
     });
 
-    it('only stores dependencies if `cacheTransformResults` option is disabled', () => {
-      transformResult = {
-        code: exampleCode,
-        arbitrary: 'arbitrary',
-        dependencies: ['foo', 'bar'],
-        dependencyOffsets: [12, 764],
-        map: {version: 3},
-        subObject: {foo: 'bar'},
-      };
-      const module = createModule({transformCode, options: {
-        cacheTransformResults: false,
-      }});
-
-      return module.read().then(result => {
-        expect(result).toEqual({
-          dependencies: ['foo', 'bar'],
-        });
-      });
-    });
-
     it('stores all things if options is undefined', () => {
       transformResult = {
         code: exampleCode,