Angular build Failing with "Data path '.sourceMap' should be object."

Question

I am building my angular application using the angular CLI command ng test --source-map=false

Everything was working fine, but suddenly I have started encountering the below error

Schema validation failed with the following errors:
Data path ".sourceMap" should be object.
Data path ".sourceMap" should be boolean.
Data path ".sourceMap" should match exactly one schema in oneOf.

On some inspection, the issue seems to originate from the --source-map parameter, but not sure about the exact cause.

I have the same problem and it seems it has something to do with the dev-dep @angular-devkit/build-angular. After downgrading this package everything works fine again. — Werner
– Werner, Commented Feb 20, 2019 at 8:49
The problem for me was due an incompatible version of @angular-devkit/build-angular with angular 6. Btw. I've downgraded @angular-devkit/build-angular to ~0.8.9 which seems to be the last compatible version. — Werner
– Werner, Commented Feb 20, 2019 at 8:59

brosenquist · Accepted Answer · 2019-03-20 15:38:53Z

2

There was a bug with the --source-map flag that would throw those errors. The latest version of the @angular-devkit/build-angular has a fix for this (0.13.6).

answered Mar 20, 2019 at 15:38

brosenquist

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2 Comments

pcasme Over a year ago

I have @angular-devkit/build-angular 0.13.8 and have the same issue.

HelloWorld Over a year ago

angular broke semver it looks like latest version is now 0.8.9 npmjs.com/package/@angular-devkit/build-angular (versions tab)

dataphile · Accepted Answer · 2019-02-14 08:13:46Z

1

The parameter for source maps is

--sourceMap=true|false

See : https://angular.io/cli/test

answered Feb 14, 2019 at 8:13

dataphile

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pcasme Over a year ago

This if for Angular 7. For Angular 6 the parameter is as @goyalM has specified.

yuji wang · Accepted Answer · 2019-03-28 05:28:06Z

1

For the latest version,the cmd params is like this " ng build --prod --source-map ".

https://angular.io/guide/deployment#inspect-the-bundles

edited Mar 28, 2019 at 5:28

answered Mar 28, 2019 at 2:55

yuji wang

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Comments

Alex Ryltsov · Accepted Answer · 2019-05-08 12:53:34Z

1

For me the problem was that i used ngx-build-plus which is not yet based on the Angular CLI 7.2 style config for "sourceMap". The temporary workaround that I used is described here https://github.com/manfredsteyer/ngx-build-plus/issues/88#issuecomment-490433864

answered May 8, 2019 at 12:53

Alex Ryltsov

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sandeep1201 · Accepted Answer · 2019-02-08 19:29:08Z

0

Is your command correct.I think it should be ng test --sourcemaps=false

answered Feb 8, 2019 at 19:29

sandeep1201

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