Use new configuration in react-native public cli

Summary: Change the public react-native CLI to use the new configuration of Metro.

Reviewed By: rafeca

Differential Revision: D8801217

fbshipit-source-id: 112e4812b430ebee1ed41489f803b90c182ccdb4

local-cli/bundle/buildBundle.js

@@ -14,15 +14,12 @@ const log = require('../util/log').out('bundle');
 /* $FlowFixMe(site=react_native_oss) */
 const Server = require('metro/src/Server');
 
-const {convert} = require('metro-config');
-
 /* $FlowFixMe(site=react_native_oss) */
 const outputBundle = require('metro/src/shared/output/bundle');
+const {convert} = require('metro-config');
 const path = require('path');
 const saveAssets = require('./saveAssets');
 
-const {ASSET_REGISTRY_PATH} = require('../core/Constants');
-
 import type {RequestOptions, OutputOptions} from './types.flow';
 import type {ConfigT} from 'metro-config/src/configTypes.flow';
 
@@ -48,6 +45,10 @@ async function buildBundle(
     sourceMapUrl = path.basename(sourceMapUrl);
   }
 
+  config.transformModulePath = args.transformer
+    ? path.resolve(args.transformer)
+    : config.transformModulePath;
+
   const requestOpts: RequestOptions = {
     entryFile: args.entryFile,
     sourceMapUrl,
@@ -56,13 +57,6 @@ async function buildBundle(
     platform: args.platform,
   };
 
-  const transformModulePath = args.transformer
-    ? path.resolve(args.transformer)
-    : config.transformModulePath;
-
-  config.transformModulePath = transformModulePath;
-  config.transformer.assetRegistryPath = ASSET_REGISTRY_PATH;
-
   const {serverOptions} = convert.convertNewToOld(config);
 
   const server = new Server(serverOptions);

local-cli/cliEntry.js

@@ -10,7 +10,7 @@
 
 'use strict';
 
-const config = require('./core');
+const {configPromise} = require('./core');
 
 const assertRequiredOptions = require('./util/assertRequiredOptions');
 /* $FlowFixMe(>=0.54.0 site=react_native_oss) This comment suppresses an error
@@ -137,7 +137,8 @@ const addCommand = (command: CommandT, cfg: RNConfig) => {
   cmd.option('--config [string]', 'Path to the CLI configuration file');
 };
 
-function run() {
+async function run() {
+  const config = await configPromise;
   const setupEnvScript = /^win/.test(process.platform)
     ? 'setup_env.bat'
     : 'setup_env.sh';

local-cli/core/index.js

@@ -16,6 +16,7 @@ const findPlugins = require('./findPlugins');
 const findAssets = require('./findAssets');
 const ios = require('./ios');
 const wrapCommands = require('./wrapCommands');
+const {ASSET_REGISTRY_PATH} = require('./Constants');
 
 /* $FlowFixMe(>=0.54.0 site=react_native_oss) This comment suppresses an error
  * found when Flow v0.54 was deployed. To see the error delete this comment and
@@ -28,18 +29,14 @@ const minimist = require('minimist');
 const path = require('path');
 
 import type {CommandT} from '../commands';
-import type {ConfigT} from 'metro';
+import type {ConfigT} from 'metro-config/src/configTypes.flow';
 
 export type RNConfig = {
   ...ConfigT,
   /**
    * Returns an object with all platform configurations.
    */
   getPlatformConfig(): Object,
-  /**
-   * Returns an array of project commands used by the CLI to load
-   */
-  getProjectCommands(): Array<CommandT>,
   /**
    * Returns project config from the current working directory
    */
@@ -69,7 +66,7 @@ const pluginPlatforms = plugins.platforms.reduce((acc, pathToPlatforms) => {
   );
 }, {});
 
-const defaultRNConfig = {
+const defaultConfig = {
   hasteImplModulePath: require.resolve('../../jest/hasteImpl'),
 
   getPlatforms(): Array<string> {
@@ -79,20 +76,9 @@ const defaultRNConfig = {
   getProvidesModuleNodeModules(): Array<string> {
     return ['react-native', 'react-native-windows'];
   },
+};
 
-  getProjectCommands(): Array<CommandT> {
-    const commands = plugins.commands.map(pathToCommands => {
-      const name = pathToCommands.split(path.sep)[0];
-
-      return attachPackage(
-        require(path.join(appRoot, 'node_modules', pathToCommands)),
-        require(path.join(appRoot, 'node_modules', name, 'package.json')),
-      );
-    });
-
-    return flatten(commands);
-  },
-
+const defaultRNConfig = {
   getPlatformConfig(): Object {
     return {
       ios,
@@ -141,14 +127,33 @@ const defaultRNConfig = {
 /**
  * Loads the CLI configuration
  */
-function getCliConfig(): RNConfig {
+async function getCliConfig(): Promise<RNConfig> {
   const cliArgs = minimist(process.argv.slice(2));
-  const config =
-    cliArgs.config != null
-      ? Config.load(path.resolve(__dirname, cliArgs.config))
-      : Config.findOptional(__dirname);
+  const config = await Config.load(path.resolve(__dirname, cliArgs.config));
+
+  config.transformer.assetRegistryPath = ASSET_REGISTRY_PATH;
+  config.resolver.hasteImplModulePath = defaultConfig.hasteImplModulePath;
+  config.resolver.platforms = defaultConfig.getPlatforms();
+  config.resolver.providesModuleNodeModules = defaultConfig.getProvidesModuleNodeModules();
 
   return {...defaultRNConfig, ...config};
 }
 
-module.exports = getCliConfig();
+/**
+ * Returns an array of project commands used by the CLI to load
+ */
+function getProjectCommands(): Array<CommandT> {
+  const commands = plugins.commands.map(pathToCommands => {
+    const name = pathToCommands.split(path.sep)[0];
+
+    return attachPackage(
+      require(path.join(appRoot, 'node_modules', pathToCommands)),
+      require(path.join(appRoot, 'node_modules', name, 'package.json')),
+    );
+  });
+
+  return flatten(commands);
+}
+
+module.exports.configPromise = getCliConfig();
+module.exports.getProjectCommands = getProjectCommands;

local-cli/dependencies/dependencies.js

@@ -16,8 +16,6 @@ const denodeify = require('denodeify');
 const fs = require('fs');
 const path = require('path');
 
-const {ASSET_REGISTRY_PATH} = require('../core/Constants');
-
 async function dependencies(argv, configPromise, args, packagerInstance) {
   const rootModuleAbsolutePath = args.entryFile;
   const config = await configPromise;
@@ -31,12 +29,9 @@ async function dependencies(argv, configPromise, args, packagerInstance) {
   config.transformModulePath = args.transformer
     ? path.resolve(args.transformer)
     : config.transformModulePath;
-  config.transformer.transformModulePath = ASSET_REGISTRY_PATH;
-
-  const {serverOptions: packageOpts} = convert.convertNewToOld(config);
 
   const relativePath = path.relative(
-    packageOpts.projectRoot,
+    config.projectRoot,
     rootModuleAbsolutePath,
   );
 
@@ -53,18 +48,20 @@ async function dependencies(argv, configPromise, args, packagerInstance) {
     ? fs.createWriteStream(args.output)
     : process.stdout;
 
+  const {serverOptions} = convert.convertNewToOld(config);
+
   return Promise.resolve(
     (packagerInstance
       ? packagerInstance.getOrderedDependencyPaths(options)
-      : Metro.getOrderedDependencyPaths(packageOpts, options)
+      : Metro.getOrderedDependencyPaths(serverOptions, options)
     ).then(deps => {
       deps.forEach(modulePath => {
         // Temporary hack to disable listing dependencies not under this directory.
         // Long term, we need either
         // (a) JS code to not depend on anything outside this directory, or
         // (b) Come up with a way to declare this dependency in Buck.
         const isInsideProjectRoots =
-          packageOpts.watchFolders.filter(root => modulePath.startsWith(root))
+          config.watchFolders.filter(root => modulePath.startsWith(root))
             .length > 0;
 
         if (isInsideProjectRoots) {

local-cli/server/runServer.js

@@ -21,11 +21,8 @@ const morgan = require('morgan');
 const path = require('path');
 const webSocketProxy = require('./util/webSocketProxy');
 const MiddlewareManager = require('./middleware/MiddlewareManager');
-const {convertOldToNew} = require('metro-config/src/convertConfig');
 
-const {ASSET_REGISTRY_PATH} = require('../core/Constants');
-
-import type {ConfigT} from 'metro';
+import type {ConfigT} from 'metro-config/src/configTypes.flow';
 
 export type Args = {|
   +assetExts: $ReadOnlyArray<string>,
@@ -57,23 +54,14 @@ async function runServer(args: Args, config: ConfigT) {
 
   args.watchFolders.forEach(middlewareManager.serveStatic);
 
+  config.maxWorkers = args.maxWorkers;
+  config.server.port = args.port;
+  config.reporter = reporter;
+  config.server.enhanceMiddleware = middleware =>
+    middlewareManager.getConnectInstance().use(middleware);
+
   const serverInstance = await Metro.runServer({
-    config: convertOldToNew({
-      config: {
-        ...config,
-        assetRegistryPath: ASSET_REGISTRY_PATH,
-        enhanceMiddleware: middleware =>
-          middlewareManager.getConnectInstance().use(middleware),
-        transformModulePath: args.transformer
-          ? path.resolve(args.transformer)
-          : config.getTransformModulePath(),
-      },
-      maxWorkers: args.maxWorkers,
-      port: args.port,
-      reporter,
-    }),
-
-    hmrEnabled: true,
+    config,
     host: args.host,
     secure: args.https,
     secureCert: args.cert,

local-cli/server/server.js

@@ -13,7 +13,7 @@
 const runServer = require('./runServer');
 
 import type {RNConfig} from '../core';
-import type {ConfigT} from 'metro';
+import type {ConfigT} from 'metro-config/src/configTypes.flow';
 import type {Args as RunServerArgs} from './runServer';
 
 /**
@@ -43,7 +43,7 @@ module.exports = {
       command: '--projectRoot [string]',
       description: 'Specify the main project root',
       default: (config: ConfigT) => {
-        return config.getProjectRoot();
+        return config.projectRoot;
       },
     },
     {
@@ -52,40 +52,39 @@ module.exports = {
         'Specify any additional folders to be added to the watch list',
       parse: (val: string) => val.split(','),
       default: (config: ConfigT) => {
-        return config.getWatchFolders();
+        return config.watchFolders;
       },
     },
     {
       command: '--assetExts [list]',
       description:
         'Specify any additional asset extensions to be used by the packager',
       parse: (val: string) => val.split(','),
-      default: (config: ConfigT) => config.getAssetExts(),
+      default: (config: ConfigT) => config.resolver.assetExts,
     },
     {
       command: '--sourceExts [list]',
       description:
         'Specify any additional source extensions to be used by the packager',
       parse: (val: string) => val.split(','),
-      default: (config: ConfigT) => config.getSourceExts(),
+      default: (config: ConfigT) => config.resolver.sourceExts,
     },
     {
       command: '--platforms [list]',
       description:
         'Specify any additional platforms to be used by the packager',
       parse: (val: string) => val.split(','),
-      default: (config: ConfigT) => config.getPlatforms(),
+      default: (config: ConfigT) => config.resolver.platforms,
     },
     {
       command: '--providesModuleNodeModules [list]',
       description:
         'Specify any npm packages that import dependencies with providesModule',
       parse: (val: string) => val.split(','),
       default: (config: RNConfig) => {
-        if (typeof config.getProvidesModuleNodeModules === 'function') {
-          return config.getProvidesModuleNodeModules();
-        }
-        return null;
+        return config.resolver
+          ? config.resolver.providesModuleNodeModules
+          : undefined;
       },
     },
     {