Sometimes, we want to produce a .d.ts type definition file from an existing JavaScript library.
In this article, we’ll look at how to produce a .d.ts type definition file from an existing JavaScript library.
How to produce a .d.ts type definition file from an existing JavaScript library?
To produce a .d.ts type definition file from an existing JavaScript library, we can use the dts-gen package or create it manually.
For instance, we run
npm install -g dts-gen
to install the dts-gen package globally.
Then we run
dts-gen -m <your-module>
to create the TypeScript type definition files for <your-module>.
We can also create a .d.ts file manually and add
declare module "foo";
where 'foo' is the module we’re trying to import.
This will let us import foo with the any type.
Conclusion
To produce a .d.ts type definition file from an existing JavaScript library, we can use the dts-gen package or create it manually.
