Error 404 for rxjs/operators.js on running unit tests

[ahmadqarshi]

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Current behavior

Initially I was getting the error "'build.bundle.rxjs' errored after 562 ms". After the fix made in #2109 that error disappeared but now when I run the unit tests, I get below error:

24 10 2017 13:15:34.764:WARN [web-server]: 404: /base/node_modules/rxjs/operators.js Chrome 61.0.3163 (Windows 10 0.0.0) ERROR: 'Error: Fetch error: 404 Not Found at http://localhost:9876/base/node_modules/systemjs/dist/system.src.js?3c2cb0bc284db65a3e67e988 cdb7175dc5362244:1475:13 at ZoneDelegate.invoke (http://localhost:9876/base/node_modules/zone.js/dist/zone.js?5946249a94 dbe0baef6f1ef0e76e9bb02decfe1a:392:26) at Zone.run (http://localhost:9876/base/node_modules/zone.js/dist/zone.js?5946249a94dbe0baef6f1 ef0e76e9bb02decfe1a:142:43) at http://localhost:9876/base/node_modules/zone.js/dist/zone.js?5946249a94dbe0baef6f1ef0e76e9bb 02decfe1a:873:57 at ZoneDelegate.invokeTask (http://localhost:9876/base/node_modules/zone.js/dist/zone.js?594624 9a94dbe0baef6f1ef0e76e9bb02decfe1a:425:31) at Zone.runTask (http://localhost:9876/base/node_modules/zone.js/dist/zone.js?5946249a94dbe0bae f6f1ef0e76e9bb02decfe1a:192:47) at drainMicroTaskQueue (http://localhost:9876/base/node_modules/zone.js/dist/zone.js?5946249a94 dbe0baef6f1ef0e76e9bb02decfe1a:602:35) at <anonymous>'

Expected behavior

Should not get 404 for RxJs and unit tests should run without any issue.

Minimal reproduction of the problem with instructions

What is the motivation / use case for changing the behavior?

Please tell us about your environment:

Windows 10
VS Code

• Angular Seed Version: d6abbf96184babb00c3f32482edbcd0ddcb6e243

• Node: node --version = 6.9.5

[ahmadqarshi]

I found that with "rxjs": "^5.5.0" in packages.json, it downloads version "5.5.2". I tried "rxjs": "5.4.3" and it started working again.

[mgechev]

@ahmadqarshi fix for ^5.0.0 should be updating the SystemJS configuration.

Would you try to add this line in the mapping section of SYSTEM_CONFIG_DEV and let me know if this makes the unit tests work for you?

If it doesn't, you can remove the line from seed.config.ts in order to prevent future merge conflicts. If it does, you can open a PR with the change, or I can.

[ahmadqarshi]

@mgechev I tried that already but it didn't work for me. I also tried below pattern entry in karma.conf.js file inside the files array but to no avail

{ pattern: 'node_modules/rxjs/operators/**/*.js', included: false, watched: false }

[mikejohanson]

While not ideal...the hacky fix that worked for me was to copy the rxjs/operators/index.js to rxjs/operators.js and do a find and replace on './ with './operators/. Fixes the build.prod issue as well. You could do something like: sed -e "s/'\./'.\/operators/" <node_modules/rxjs/operators/index.js >node_modules/rxjs/operators.js. Check out ReactiveX/rxjs#2971 for a disussion on the issue