How to get non-qualified type text?

I’m not sure what changed in my setup, perhaps a TypeScript upgrade, or a ts-simple-ast upgrade, but today I noticed that my script no longer works as intended, and when I get the text of the type of a class property I get an import path in front of it.

I wasn’t able to find how to just get the non-qualified type. I must be missing something basic. Any help is appreciated.

This is my code:

const properties = _(cls.getInstanceProperties())
  .filter(prop => {
    return prop.getKind() === ts.SyntaxKind.PropertyDeclaration;
  })
  .forEach(prop => {
    console.log(prop.getType().getText());

The above outputs qualified types for some of the properties:

import("/path/to/node_modules/@angular/core/src/event_emitter").EventEmitter<Event>

But previously I was just getting:

EventEmitter<Event>

How can I get the latter again?

[dsherret]

Yeah, this was a change in TypeScript in 2.9. The key here seems to be to pass in the enclosing declaration to getText() which will cause it to not return the import type text:

import { Project, TypeFormatFlags } from "ts-simple-ast";

const project = new Project({ useVirtualFileSystem: true });
const sourceFile = project.createSourceFile("Class.ts", "export class Class { prop: string; }");
const mainFile = project.createSourceFile("main.ts", "import { Class } from './Class'; let c: Class;");

const varDec = mainFile.getVariableDeclarationOrThrow("c");
console.log(varDec.getType().getText()); // outputs: import("/Class").Class
console.log(varDec.getType().getText(varDec)); // outputs: Class

There might be a way to make this work using TypeFormatFlags alone (second param of getText)… I’m not sure.

[dsherret]

That’s very interesting! It seems what matters here is what type is requested first to the type checker and that’s the main problem here. I bet that’s probably by design, but opened #480 to investigate further.

Closing this for now.