Cannot get symbol inside class decorator (Cannot read property 'members' of un...)

[mgechev]

TypeScript Version:

1.8.10

Code

@Component({
  selector: SELECTOR
})
class SampleComponent {}
const SELECTOR = 'ng-demo';

Expected behavior:

With sample SyntaxWalker based on tslint, once I visit the PropertyAssignment - selector: SELECTOR and invoke typeChecker.getSymbolAtLocation(prop.initializer); I should get the SELECTOR symbol.

Actual behavior:

     TypeError: Cannot read property 'members' of undefined
      at resolveName (node_modules/typescript/lib/typescript.js:15307:73)
      at resolveEntityName (node_modules/typescript/lib/typescript.js:15725:26)
      at getSymbolOfEntityNameOrPropertyAccessExpression (node_modules/typescript/lib/typescript.js:28708:28)
      at Object.getSymbolAtLocation (node_modules/typescript/lib/typescript.js:28770:28)

[mhegazy]

why are you calling it on the initializer? this is the 'ng-demo' part. you probably want PropertyAssignment.name

it shoudl not crash either ways, so that is a bug.

[mhegazy]

PRs are welcomed

[JoshuaKGoldberg]

Found a root cause. See ☝ linked issues!