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angularng-packagrangular-schematics

Composing build schematics in angular

I'd like to compose the ngpackagr schematic with my own. Inside my custom rule I do something like:

export function testScehma(_options: any): Rule { return chain([ externalSchematic('@angular-devkit/build-ng-packagr', 'build', _options), (tree: Tree, _context: SchematicContext) => { tree.create('testFile.txt', 'This is a Test!!!'); return tree; } ]); }

Then I try to run: ng my-test-lib build.

I get the following error: Error: Package "@angular-devkit/build-ng-packagr" was found but does not support schematics.

Where do I find the ngpackagr schematics to be able to extend it?

Solution

  • Schematics is used to manipulate files.

    I don't think the build mechanism is built by schematic, but more with Webpack (and in the future - Bazel).

    That's why I believe it says that @angular-devkit/build-ng-packagr does not support schematics.

    So I think that if you want to test it, try something like -

    externalSchematic('@schematics/angular', 'component', options)

    To experiment with how you can create custom components for example.

    If you want to customize the build, I think that for now (unless I'm mistaken) you are bound to the configuration options that exist in the angular.json file.