kill shouldThrowOnUnresolvedErrors option

Summary: Removes the `shouldThrowOnUnresolvedErrors` option, as now it is only ever `() => true`

Reviewed By: davidaurelio

Differential Revision: D4237711

fbshipit-source-id: 9460f0f0c50dc0d08d17cb7bdeb995825f7051f3

Author: cpojer

packager/react-packager/src/ModuleGraph/node-haste/node-haste.js

@@ -37,7 +37,6 @@ type ResolveOptions = {|
 |};
 
 const platforms = new Set(defaults.platforms);
-const returnTrue = () => true;
 
 exports.createResolveFn = function(options: ResolveOptions): ResolveFn {
   const {
@@ -87,7 +86,6 @@ exports.createResolveFn = function(options: ResolveOptions): ResolveFn {
         platform,
         platforms,
         preferNativePlatform: true,
-        shouldThrowOnUnresolvedErrors: returnTrue,
       });
     }
 

packager/react-packager/src/Resolver/index.js

@@ -98,7 +98,6 @@ class Resolver {
       preferNativePlatform: true,
       watch: opts.watch,
       cache: opts.cache,
-      shouldThrowOnUnresolvedErrors: () => true,
       transformCode: opts.transformCode,
       transformCacheKey: opts.transformCacheKey,
       extraNodeModules: opts.extraNodeModules,

packager/react-packager/src/node-haste/DependencyGraph/ResolutionRequest.js

@@ -27,8 +27,6 @@ import type Module from '../Module';
 import type ModuleCache from '../ModuleCache';
 import type ResolutionResponse from './ResolutionResponse';
 
-const emptyModule = require.resolve('./assets/empty-module.js');
-
 type DirExistsFn = (filePath: string) => boolean;
 
 type Options = {
@@ -43,7 +41,6 @@ type Options = {
   platform: string,
   platforms: Set<string>,
   preferNativePlatform: boolean,
-  shouldThrowOnUnresolvedErrors: () => boolean,
 };
 
 class ResolutionRequest {
@@ -58,7 +55,7 @@ class ResolutionRequest {
   _platform: string;
   _platforms: Set<string>;
   _preferNativePlatform: boolean;
-  _shouldThrowOnUnresolvedErrors: () => boolean;
+  static emptyModule: string;
 
   constructor({
     dirExists,
@@ -71,7 +68,6 @@ class ResolutionRequest {
     platform,
     platforms,
     preferNativePlatform,
-    shouldThrowOnUnresolvedErrors,
   }: Options) {
     this._dirExists = dirExists;
     this._entryPath = entryPath;
@@ -83,7 +79,6 @@ class ResolutionRequest {
     this._platform = platform;
     this._platforms = platforms;
     this._preferNativePlatform = preferNativePlatform;
-    this._shouldThrowOnUnresolvedErrors = shouldThrowOnUnresolvedErrors;
     this._resetResolutionCache();
   }
 
@@ -109,38 +104,16 @@ class ResolutionRequest {
       return result;
     };
 
-    const forgive = (error) => {
-      if (
-        error.type !== 'UnableToResolveError' ||
-        this._shouldThrowOnUnresolvedErrors(this._entryPath, this._platform)
-      ) {
-        throw error;
-      }
-
-      debug(
-        'Unable to resolve module %s from %s',
-        toModuleName,
-        fromModule.path
-      );
-      return null;
-    };
-
     if (!this._helpers.isNodeModulesDir(fromModule.path)
         && !(isRelativeImport(toModuleName) || isAbsolutePath(toModuleName))) {
       return this._tryResolve(
         () => this._resolveHasteDependency(fromModule, toModuleName),
         () => this._resolveNodeDependency(fromModule, toModuleName)
-      ).then(
-        cacheResult,
-        forgive,
-      );
+      ).then(cacheResult);
     }
 
     return this._resolveNodeDependency(fromModule, toModuleName)
-      .then(
-        cacheResult,
-        forgive,
-      );
+      .then(cacheResult);
   }
 
   getOrderedDependencies({
@@ -311,7 +284,11 @@ class ResolutionRequest {
     return this._redirectRequire(fromModule, potentialModulePath).then(
       realModuleName => {
         if (realModuleName === false) {
-          return this._loadAsFile(emptyModule, fromModule, toModuleName);
+          return this._loadAsFile(
+            ResolutionRequest.emptyModule,
+            fromModule,
+            toModuleName,
+          );
         }
 
         return this._tryResolve(
@@ -330,7 +307,11 @@ class ResolutionRequest {
         realModuleName => {
           // exclude
           if (realModuleName === false) {
-            return this._loadAsFile(emptyModule, fromModule, toModuleName);
+            return this._loadAsFile(
+              ResolutionRequest.emptyModule,
+              fromModule,
+              toModuleName,
+            );
           }
 
           if (isRelativeImport(realModuleName) || isAbsolutePath(realModuleName)) {
@@ -526,4 +507,6 @@ function isRelativeImport(filePath) {
   return /^[.][.]?(?:[/]|$)/.test(filePath);
 }
 
+ResolutionRequest.emptyModule = require.resolve('./assets/empty-module.js');
+
 module.exports = ResolutionRequest;