在打字稿中使用 Javascript 库？

Question

Im quite new to typescript, so I´m sorry if the question is pretty easy. I want to use JS libraries in a .ts file. Also, I´m using node.js to run my program in my console.

In Javascript I used the following line of code:

const  example = require('lodash'); // example

After that, I typed the following command in my terminal:

npm i loadsh

Now I have an example.ts file, where I want to use the exact same library. Could anyone provide me with an example, of how to do that ? Thanks a lot

Answer 1

Look at this article - https://medium.com/@steveruiz/using-a-javascript-library-without-type-declarations-in-a-typescript-project-3643490015f3

Please before asking a question, do a bit of search yourself

Answer 2

You will need a TSConfig file, https://www.typescriptlang.org/tsconfig

You can create one with npx tsc --init

If you want to run the code without building it consider using ts-node instead of node

You can then do your imports in a tsx file with import {map} from lodash;

Be sure to have "allowJs": true in your tsconfig.

Answer 3

Most of npm libraries, including lodash, have typescript definitions provided by developers team. Types for javascript libraries come as separate package, so you need to install it too.

npm i -D @types/lodash