Converting a Typescript project into a Node package: A step-by-step guide

I'm currently dealing with an older typescript project that has numerous functions and interfaces spread out across multiple files. Other packages that depend on these exports are directly linked to the file in the directory.

My goal is to transition this dependency into a proper npm package, complete with an index.js and index.d.js. However, I'm finding it difficult to figure out what those two files should contain.

One specific challenge I'm facing is how to properly export both a type HttpHandler and its corresponding implementation httpHandler

It's important to note that for this package, there is no default export.

Any examples or suggestions? I'd greatly appreciate any guidance.

typescripttypescript-typingstypescript-declarations

Answer №1

Here is an instance of a library called @ed4becky/acme. The source code for the library can be found in the src directory, along with a fabricated consumer file named fake-external-consumer.ts. In a real-world scenario, fake-exernal-consumer.ts would typically reside in its own separate repository or project. However, for illustration and simplicity purposes, it has been placed outside the src directory in this example. By examining this demonstration, you can observe the creation of the library @ed4becky/acme, as well as how it is imported using the statement 

import { A, B } from @ed4becky/acme
. The ability to import from the library is made possible because classes A and B are exported within the file src/index.ts.

https://codesandbox.io/s/mystifying-gauss-b8zjk

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