Unable to use newly published Angular Library

Question

I am new to publishing Angular libraries and this is my first humble attempt to publish a lib to NPM called wps-ng https://www.npmjs.com/package/wps-ng.

My Public Api file looks like https://github.com/singkara/wps-js-ng/blob/library_test/projects/wps-ng/src/public-api.ts where I have exported the following:

export * from './lib/wps-ng.service';
export * from './lib/wps-ng.component';
export * from './lib/wps-ng.module';

...

However, when I do npm install wps-ng in a 3rd party Angular 9 application, it fails with the error:

TS2307: Cannot find module 'wps-ng' or its corresponding type declarations.

Although, I am able to use this same library (from the dist folder) in the same project as that of the library itself but not from third party application (from node_modules folder).

Any thoughts on why this could happen?

Thanks in Advance.

I think you might be missing the module property in your lib's package.json file. It needs to point to the compiled js version of your public_api.ts file. — Aaron Adrian
– Aaron Adrian, Commented Jul 20, 2020 at 21:59
Thanks for the comment, I tried adding the module tag in package.json and pointed it to src/public_api.ts. However, it didn't work. — Karan Deep Singh
– Karan Deep Singh, Commented Jul 20, 2020 at 22:08

Karan Deep Singh · Accepted Answer · 2020-07-25 15:45:11Z

3

I have figured out the issue finally, What I did wrong was, I published the library by running the command npm publish in the library folder.

However, the correct way to do this is by running the following commands:

ng build
cd dist
cd your library name
npm pack
npm publish

answered Jul 25, 2020 at 15:45

Karan Deep Singh

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1 Comment

Winnemucca Over a year ago

Do you also have to remove the /dist from .gitignore?

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