How to share code between TypeScript projects?

Question

Let\'s say I have two projects with following file structure

/my-projects/

  /project-a/
    lib.ts
    app.ts
    tsconfig.json

  /project-b/
    app.ts           


        

Answer 1

It seems we've got a few options here:

(1) Put both projects in a mono repo and use answer given by @ThdK using TS project references

NOT GOOD if you don't want a mono repo

(2) Use Lerna - see answer by @metric_caution

NOT GOOD if you can't be bothered to learn Lerna / don't want to publish your shared files to npm

(3) Create a shared npm package

NOT GOOD if you don't want to publish your shared files to npm

(4) Put shared folders in a "shared" directory in project A and write a script to copy files in the shared folder from project A to project B's shared folder that is executed on a git push OR a script to sync the two folders.

Here the script can be executed manually when copying / syncing is required. The copying / syncing could also be done prior to a git push using husky and the shared files added to git automatically in the script.

Since I don't want a mono repo and I can't be bothered to publish an npm package for such a pathetic purpose I'm gonna go with option 4 myself.