metro: allow dynamic dependencies from within node_modules

Summary: Tries to adress https://github.com/facebook/metro/issues/65. We need a reasonnable workaround to support modules like `moment.js` that do dynamic requires but only in some cases. By replacing the call by a function that throws, we move the exception at runtime instead of happening at compile time. We don't want to do that for non-node_modules file because they are fixable directly, while `node_modules` are not fixable by people and they get completely blocked by the error at compile time.

Reviewed By: rafeca

Differential Revision: D6736989

fbshipit-source-id: a6e1fd9b56fa83907400884efd8f8594018b7c37

local-cli/server/runServer.js

@@ -179,6 +179,7 @@ function getPackagerServer(args, config, reporter) {
     cacheVersion: '3',
     enableBabelRCLookup: config.getEnableBabelRCLookup(),
     extraNodeModules: config.extraNodeModules,
+    dynamicDepsInPackages: config.dynamicDepsInPackages,
     getModulesRunBeforeMainModule: config.getModulesRunBeforeMainModule,
     getPolyfills: config.getPolyfills,
     getTransformOptions: config.getTransformOptions,