Jasmine tests stacktrace useless - does not show source .ts files and line numbers

[xnnkmd]

Bug Report or Feature Request (mark with an x)

- [x ] bug report -> please search issues before submitting
- [ ] feature request

Versions.

ng 1.2

Repro steps.

ng new tst

modify generated app.component.spec.ts line 23 to force an error. E.g.
expect(app.title).toEqual('forcebug');

ng test

Note the useless stacktrace this gives no clue about the source code responible for the bug.

The log given by the failure.

    Expected 'app' to equal 'forcebug'.
        at Object.<anonymous> (http://localhost:9876/_karma_webpack_/main.bundle.js:89:27)
        at ZoneDelegate.webpackJsonp.../../../../zone.js/dist/zone.js.ZoneDelegate.invoke (http://localhost:9876/_karma_webpack_/polyfills.bundle.js:2801:26)
        at AsyncTestZoneSpec.webpackJsonp.../../../../zone.js/dist/async-test.js.AsyncTestZoneSpec.onInvoke (http://localhost:9876/_karma_webpack_/vendor.bundle.js:2643:39)
        at ProxyZoneSpec.webpackJsonp.../../../../zone.js/dist/proxy.js.ProxyZoneSpec.onInvoke (http://localhost:9876/_karma_webpack_/vendor.bundle.js:3406:39)

C

Desired functionality.

Stacktrace should report app.component.ts:23 as part of the stacktrace (ideally at the top).

[devoto13]

Possible duplicate of #6583.

[filipesilva]

Closing as duplicate of #6583

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