Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Duplicate method declarations exists in the emitted .d.ts file of this JS file

See original GitHub issue

Describe the bug

Version: 14.0.0

duplicate code exists in the .d.ts declaration file generated by ts-morph from .js file.

To Reproduce

// .js
export default {
    methods: {
        handleScroll() {}
    }
};

// .d.ts
// handleScroll is duplicate
declare namespace _default {
    namespace methods {
        function handleScroll(): void;
        function handleScroll(): void;
    }
}
export default _default;

Expected behavior no duplicate code

Issue Analytics

State:
Created a year ago
Comments:5 (3 by maintainers)

Top GitHub Comments

1reaction

dsherretcommented, May 21, 2022

@likuner well I won’t be able to fix it because I don’t have time and it’s a bug with the TypeScript compiler. If you need this fixed then you can look into fixing this bug I opened in TS’s repo: https://github.com/microsoft/TypeScript/issues/49200

0reactions

likunercommented, May 21, 2022

Thanks! I can reproduce it. Most likely it is a bug in the ts compiler.

OK, please let me know after the problem is solved, I need it urgently, Thanks!

Top Results From Across the Web

build mode: generated .d.ts files causing 'Duplicate identifier ...

Today, the only way you get a /// <reference types="node" /> directive out of declaration emit is by inputting one (as the mapping...

Typescript does not copy d.ts files to build - Stack Overflow

You are right - declaration:true implies that only for each given .ts file tsc generates and copies a corresponding .d.ts output file to...

Documentation - Creating .d.ts Files from .js files - TypeScript

The TSConfig is a jsonc file which configures both your compiler flags, and declare where to find files. In this case, you will...

Configuring TypeScript compiler - inDepthDev

TypeScript files are compiled into JavaScript using TypeScript compiler. ... To have the compiler emit .d.ts files, use the declaration option: <>Copy.

typescript-cheatsheet - GitHub Pages

js, most tasks are accomplished by loading one or more modules. We could define each module in its own .d.ts file with top-level...