Force haste map regeneration on deserialization error (#5642)

jestjs · Feb 22, 2018 · cdd5dfe · cdd5dfe
1 parent 52bbb26
commit cdd5dfe
Showing 1 changed file with 7 additions and 2 deletions.
diff --git a/packages/jest-haste-map/src/index.js b/packages/jest-haste-map/src/index.js
@@ -289,8 +289,13 @@ class HasteMap extends EventEmitter {
  * 1. read data from the cache or create an empty structure.
  */
  read(): InternalHasteMap {
- // This may throw. `_buildFileMap` will catch it and create a new map.
- const hasteMap: InternalHasteMap = serializer.readFileSync(this._cachePath);
+ let hasteMap: InternalHasteMap;
+
+ try {
+ hasteMap = serializer.readFileSync(this._cachePath);
+ } catch (err) {
+ hasteMap = this._createEmptyMap();
+ }
 
  for (const key in hasteMap) {
  Object.setPrototypeOf(hasteMap[key], null);