tsickle@0.33.0 requires a peer of typescript@git://github.com/mprobst/TypeScript.git#5456479a4a

Using

@angular/cli@7.0.1
npm@6.4.1
node@8.11.3

Steps to reproduce:

ng new example
cd example/
ng g library example-lib

Output:

CREATE projects/example/karma.conf.js (968 bytes)
CREATE projects/example/ng-package.json (156 bytes)
CREATE projects/example/package.json (167 bytes)
CREATE projects/example/tsconfig.lib.json (726 bytes)
CREATE projects/example/tsconfig.spec.json (246 bytes)
CREATE projects/example/tslint.json (317 bytes)
CREATE projects/example/src/public_api.ts (159 bytes)
CREATE projects/example/src/test.ts (700 bytes)
CREATE projects/example/src/lib/example.module.ts (229 bytes)
CREATE projects/example/src/lib/example.component.spec.ts (635 bytes)
CREATE projects/example/src/lib/example.component.ts (259 bytes)
CREATE projects/example/src/lib/example.service.spec.ts (338 bytes)
CREATE projects/example/src/lib/example.service.ts (136 bytes)
UPDATE angular.json (4971 bytes)
UPDATE package.json (1446 bytes)
UPDATE tsconfig.json (534 bytes)
npm WARN tsickle@0.33.0 requires a peer of typescript@git://github.com/mprobst/TypeScript.git#5456479a4a but none is installed. You must install peer dependencies yourself.

added 107 packages from 88 contributors in 13.226s

I have no idea where this is coming from, because obviously that’s not the peer dependency listed in https://github.com/angular/tsickle/blob/master/package.json.

I tried doing a npm cache clean --force in case that was relevant, but with no effect.

[rdhelms]

@alexeagle Angular 7 applications don’t depend on tsickle, but Angular libraries still do. See the above steps to reproduce which involve using ng g library

Here’s the schematic run by ng g library that adds tsickle as an npm dependency: https://github.com/angular/angular-cli/blob/master/packages/schematics/angular/library/index.ts#L112

And the relevant addition, along with ng-packagr:

      {
        type: NodeDependencyType.Dev,
        name: 'ng-packagr',
        version: '^4.2.0',
      },
      {
        type: NodeDependencyType.Dev,
        name: 'tsickle',
        version: '>=0.29.0',
      },

[alexeagle]

@rdhelms you’re right, the bug is in angular-cli library support which writes package.json with incompatible version of tsickle. https://github.com/angular/angular-cli/issues/12642