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Force haste map regeneration on deserialization error #5642

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Feb 22, 2018
Merged

Force haste map regeneration on deserialization error #5642

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9 changes: 7 additions & 2 deletions packages/jest-haste-map/src/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -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);
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