What is the process for incorporating a compiled JavaScript library into a TypeScript project?

In my Typescript project (ProjectA), I am utilizing several node packages. Additionally, I have a babel project (ProjectB) with a build configuration that supports output for multiple module definition standards such as amd, common.js, and esm.

My question is: Can I integrate the compiled code from ProjectB into ProjectA?

Currently, within ProjectA, I've created a folder called ProjectB-dist and placed all of the outputs from ProjectB there.

In one of my .ts files, I attempted to import ProjectB like this:

import ProjectB form './ProjectB-dist/output.common.js'

I have also included types for this project in my @types folder. However, the compiler is showing an error message:

Could not find a declaration file for module './ProjectB-dist/output.common.js'.

Am I misunderstanding something about the module concept?

javascripttypescriptbabeljs

Answer №1

In order to include a library, simply specify the file path to it (excluding the .js extension): 

import "./ProjectB-dist/output.common"
. If you encounter compiler errors related to a declaration file, you can resolve this by creating a file named output.common.d.ts within a specific directory and adding the following content to it: 
declare module "./ProjectB-dist/output.common";

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