# How to write a typescript library

I was a bit annoyed when googling for the topic. After a while when I had scratched together all the information, discarded the outdated one and inserted the missing bits, I decided to spread the knowledge. I went forward and created

Check it out.

You can also skip the tutorial and find the final demo library at https://github.com/bersling/typescript-library-starter, but I’d really recommend reading the tutorial or at least skimming through it!

A short summary, sort of just like the “difference to a normal project” would be this:

• Add declaration: true to tsconfig.json
• Export public parts via index.ts
• Create a package.json, with the name your library should later have. Also point to the typings by using the “types” flag, for example: “types”: “dist/index.d.ts” in the package.json.
• Configure .npmignore
• run npm publish