rxjs Warnings - Unresolved dependencies / Missing global variable names

[dgroh]

I'm creating a node package for Angular 4.4.1 with TypeScript

That is my rollup.config.js

import resolve from 'rollup-plugin-node-resolve';

export default {
	input: 'dist/dnn.js',
	output: {
		file: 'dist/bundles/dnn.umd.js',
		format: 'umd'
	},
	sourceMap: false,
	name: 'dnn',
	plugins: [
		resolve({
			module: true,
			jsnext: true,
			main: true,
			modulesOnly: true,
		})
	]
}

I get the following warning:

dist/dnn.js → dist/bundles/dnn.umd.js...

(!) Unresolved dependencies
https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-external-dependency
rxjs/Observable (imported by node_modules\@angular\core\@angular\core.es5.js, node_modules\@angular\common\@angular\common\http.es5.js)
rxjs/observable/merge (imported by node_modules\@angular\core\@angular\core.es5.js)
rxjs/operator/share (imported by node_modules\@angular\core\@angular\core.es5.js)
rxjs/Subject (imported by node_modules\@angular\core\@angular\core.es5.js)
rxjs/observable/of (imported by node_modules\@angular\common\@angular\common\http.es5.js)
rxjs/operator/concatMap (imported by node_modules\@angular\common\@angular\common\http.es5.js)
rxjs/operator/filter (imported by node_modules\@angular\common\@angular\common\http.es5.js)
rxjs/operator/map (imported by node_modules\@angular\common\@angular\common\http.es5.js)

(!) Missing global variable names
Use options.globals to specify browser global variable names corresponding to external modules
rxjs/Observable (guessing 'Observable')
rxjs/observable/merge (guessing 'merge')
rxjs/operator/share (guessing 'share')
rxjs/Subject (guessing 'Subject')
rxjs/observable/of (guessing 'of')
rxjs/operator/concatMap (guessing 'concatMap')
rxjs/operator/filter (guessing 'filter')
rxjs/operator/map (guessing 'map')

why is this only happening for rxjs? @angular/core and @angular/common passed without any problems.

[lukastaegert]

Hi,

using modulesOnly behaves exactly as expected when it warns you that the listed npm libraries do not use the ES6 format and are in fact ignored. This option is meant as a way to determine if you still have commonjs libraries in your dependencies that require special treatment via rollup-plugin-commonjs. Your code will probably not work since the listed dependencies will be missing. You should remove modulesOnly and instead add rollup-plugin-commonjs.

[lukastaegert]

Closing this as there has been no further comment for quite some time.