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export class A extends Promise<1> {} returns undefined for base class

See original GitHub issue

Describe the bug

Version: 12.0.0

To Reproduce

import { Project } from 'ts-morph'

const project = new Project()
const sourceFile = project.createSourceFile('test.ts', `export class A extends Promise<1>,  {}`)

// reproduce the problem here
console.log(sourceFile.getClasses()[0].getBaseClass()?.getText()) // undefined

Expected behavior

It should get the Promise class.

Issue Analytics

State:
Created 2 years ago
Comments:8 (4 by maintainers)

Top GitHub Comments

1reaction

dsherretcommented, Mar 13, 2022

Use getBaseTypes() since Promise is not defined as a class declaration and target at least es2015 by specifying the target compiler option or whatever other compiler options would cause that promise es2015 lib file to be included.

1reaction

dsherretcommented, Mar 11, 2022

It’s a little ambiguous what an additional helper method could return here. The getBaseClass() is intended to be a helper method for when the base is a class declaration because .getBaseTypes() is a little too low level for those simple situations. For this situation the recommended method to use is .getBaseTypes() and then you can decide if you want to get all the interfaces or just the variable declaration out of it.

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