Adds a (deprecated) --reset-cache option

Reviewed By: BYK

Differential Revision: D6424553

fbshipit-source-id: f84064f86a985ab19794ea3d94410dceac77a95b

packages/metro-bundler/src/commands/build.js

@@ -48,6 +48,9 @@ exports.builder = (yargs: Yargs) => {
   yargs.option('legacy-bundler', {type: 'boolean'});
 
   yargs.option('config', {alias: 'c', type: 'string'});
+
+  // Deprecated
+  yargs.option('reset-cache', {type: 'boolean', describe: null});
 };
 
 // eslint-disable-next-line no-unclear-flowtypes

packages/metro-bundler/src/commands/serve.js

@@ -51,6 +51,9 @@ exports.builder = (yargs: Yargs) => {
   yargs.option('legacy-bundler', {type: 'boolean'});
 
   yargs.option('config', {alias: 'c', type: 'string'});
+
+  // Deprecated
+  yargs.option('reset-cache', {type: 'boolean', describe: null});
 };
 
 // eslint-disable-next-line no-unclear-flowtypes

packages/metro-bundler/src/index.js

@@ -49,6 +49,8 @@ type PublicMetroOptions = {|
   config?: ConfigT,
   maxWorkers?: number,
   projectRoots: Array<string>,
+  // deprecated
+  resetCache?: boolean,
 |};
 
 type PrivateMetroOptions = {|
@@ -73,6 +75,7 @@ async function asyncRealpath(path): Promise<string> {
 
 async function runMetro({
   config,
+  resetCache = false,
   maxWorkers = 1,
   projectRoots = [],
   watch = false,
@@ -114,7 +117,7 @@ async function runMetro({
     postProcessModules: normalizedConfig.postProcessModules,
     postProcessBundleSourcemap: normalizedConfig.postProcessBundleSourcemap,
     providesModuleNodeModules,
-    resetCache: false,
+    resetCache,
     reporter: new TerminalReporter(new Terminal(process.stdout)),
     sourceExts: normalizedConfig.assetTransforms
       ? sourceExts.concat(assetExts)
@@ -146,6 +149,7 @@ exports.createConnectMiddleware = async function(
     config: options.config,
     maxWorkers: options.maxWorkers,
     projectRoots: options.projectRoots,
+    resetCache: options.resetCache,
     watch: true,
   });
 
@@ -176,6 +180,7 @@ exports.runServer = async (options: RunServerOptions) => {
     config: options.config,
     maxWorkers: options.maxWorkers,
     projectRoots: options.projectRoots,
+    resetCache: options.resetCache,
   });
 
   serverApp.use(middleware);
@@ -230,6 +235,7 @@ exports.runBuild = async (options: RunBuildOptions) => {
     config: options.config,
     maxWorkers: options.maxWorkers,
     projectRoots: options.projectRoots,
+    resetCache: options.resetCache,
   });
 
   const requestOptions: RequestOptions = {