Cannot read property 'text' of undefined

[lukashlobil]

I am not really sure, where the problem is, I am getting:

Cannot read property 'text' of undefined .
I am posting this issue here, because it seems related to this, which is angular cli's implementation of webpack.

ERROR in ...myClass.ts
Module build failed: TypeError: Cannot read property 'text' of undefined
    at Object.getTokenPosOfNode (node_modules/typescript/lib/typescript.js:6641:71)
    at IdentifierObject.TokenOrIdentifierObject.getStart (node_modules/typescript/lib/typescript.js:78689:23)
    at IdentifierObject.TokenOrIdentifierObject.getText /node_modules/typescript/lib/typescript.js:78710:77)
    at refactor.findAstNodes.filter /node_modules/@ngtools/webpack/src/loader.js:139:44)
    at Array.filter (native)
    at refactor.findAstNodes.forEach.node (/node_modules/@ngtools/webpack/src/loader.js:138:14)
    at Array.forEach (native)
    at _removeDecorators (/node_modules/@ngtools/webpack/src/loader.js:129:10)
    at Promise.resolve.then (/node_modules/@ngtools/webpack/src/loader.js:292:33)
 @ ./app.module.ts 4:17-58
 @ ./main.ts

myClass is a simple angular service

@Injectable()
export class MyClass<T> {

	constructor(private api: Api, private path: string, private includeAppId: boolean = true, private byParam: string = '') {}

	findAll(): Observable<T[]> {
		return this.api.buildRequest<T[]>(this.path, RequestMethod.Get, this.includeAppId);
	}

'text' property is not mentioned anywhere in the class.

My app.module:

export function apiLink(api: Api) {
	return new MyClass(api, 'path');
}
---------------------------------------------------------------------------------
{provide: API_LINK, useFactory: apiLink, deps: [Api]},

injecting the service somewhere in the app:
injector.get(API_LINK);

Looking for any kind of help / pointers. thanks

[sis0k0]

Hey @lukashlobil,

Can you post your package.json and especially the version of @ngtools/webpack that you are using. The issue is clearly comes from that plugin as you can see from the error log.

[lukashlobil]

Hello @sis0k0 thank you, package is posted in this gist: https://gist.github.com/lukashlobil/e7e81852cdc9e746fa7e79ac03cc6545

[sis0k0]

Hi @lukashlobil,

I've been trying to reproduce this in a simple app, but I couldn't get the same error. Can you send a really simple sample project with the error, so I can debug it. Thank you in advance!

[DanielKucal]

@sis0k0, I've prepared a reproduce of this error using symlink and sample-Groceries project: https://github.com/DanielKucal/sample-Groceries/tree/cannot-read-text-of-undefined-repro
That's probably just one of possible reasons, I'd like to see more detailed errors in Nativescript.

[lukashlobil]

@DanielKucal I have used a symlink as well (like angular-advanced-seed). Had to get rid of it and now I don't get this error as well. This service myClass was symlinked. Well, I guess, don't use symlinks.

[DanielKucal]

Hi @lukashlobil, I really need symlinks as AoT compilation hasn't been used for my Angular project so its code is incompatible. That's why I've developed a simple tool for replacing symlinks by real files to make a build and revert them afterwards. If you think you will need them anyway, then take a look at symlink-resolver. Good luck

[lukashlobil]

I moved the symlinked files to its own repo, but thank you, this will come in handy