Sourcemaps break error reporting in Jest

[TimonVS]

Sourcemaps seem to break error reporting in Jest. Every time TypeORM throw an error while running tests with Jest I get something like this:

ENOENT: no such file or directory, open '/Users/timon/Projects/typeorm-jest-bug/src/metadata-builder/EntityMetadataValidator.ts'

Removing the sourcemap for EntityMetadataValidator.ts seems to fix the problem. It also only happens in Jest, when I run the code in Node it works perfectly fine.

I made a repository as to easily reproduce the bug: https://github.com/TimonVS/typeorm-jest-bug

[pleerock]

Im not familiar with jest and don't know how it works. And its not clear to me why it uses your project path, e.g.

'/Users/.../www/clonned/typeorm-jest-bug/src/error/DataTypeNotSupportedError.ts'

Can you try to debug and find a source of problem?

[pleerock]

Adding jest expert @hmil

[hmil]

I'm no Jest expert but your test repo gets fixed by downgrading jest and ts-jest to versions 21.x.x

--- a/package.json
+++ b/package.json
@@ -5,8 +5,8 @@
   "devDependencies": {
     "@types/jest": "^21.1.8",
     "@types/node": "^8.0.29",
-    "jest": "^22.0.3",
-    "ts-jest": "^22.0.0",
+    "jest": "^21.0.0",
+    "ts-jest": "^21.0.0",
     "ts-node": "3.3.0",
     "typescript": "2.5.2"
   },

Try to isolate whether it's due to ts-jest or jest and file an issue over there.

[TimonVS]

Yep, it seems to be an issue with Jest itself. I'll dive deeper and file an issue in the Jest repo. Thanks for the help!

[pleerock]

thank you for your help @hmil

[lightsofapollo]

Fairly sure this is related to jestjs/jest#5121

[91debug]

thank you @hmil bro!

[canhnht]

Thank you @hmil !