jest-haste-map: only file IO errors should be silently ignored

packages/jest-cli/src/TestWorker.js

@@ -44,6 +44,7 @@ const formatError = (error: string | Error): SerializableError => {
   }
 
   return {
+    code: error.code || undefined,
     message: error.message,
     stack: error.stack,
     type: 'Error',

packages/jest-cli/src/reporters/CoverageWorker.js

@@ -30,6 +30,7 @@ function formatCoverageError(error, filename: Path): SerializableError {
   `;
 
   return {
+    code: error.code || undefined,
     message,
     stack: error.stack,
     type: 'ERROR',

packages/jest-haste-map/src/__tests__/index-test.js

@@ -136,7 +136,9 @@ describe('HasteMap', () => {
         return mockFs[path];
       }
 
-      throw new Error(`Cannot read path '${path}'.`);
+      const error = new Error(`Cannot read path '${path}'.`);
+      error.code = 'ENOENT';
+      throw error;
     });
     fs.writeFileSync = jest.fn((path, data, options) => {
       expect(options).toBe('utf8');

packages/jest-haste-map/src/index.js

@@ -407,6 +407,9 @@ class HasteMap extends EventEmitter {
         fileMetadata[H.DEPENDENCIES] = metadata.dependencies || [];
       },
       error => {
+        if (['ENOENT', 'EACCES'].indexOf(error.code) < 0) {
+          throw error;
+        }
         // If a file cannot be read we remove it from the file list and
         // ignore the failure silently.
         delete hasteMap.files[filePath];

packages/jest-haste-map/src/worker.js

@@ -33,6 +33,7 @@ const formatError = (error: string | Error): SerializableError => {
   }
 
   return {
+    code: error.code || undefined,
     message: error.message,
     stack: error.stack,
     type: 'Error',

types/TestResult.js

@@ -62,6 +62,7 @@ export type CoverageMap = {|
 |};
 
 export type SerializableError = {|
+  code?: mixed,
   message: string,
   stack: ?string,
   type?: string,