Setup (see GitHub project wiki page)

Copied files over
npm install ...
npm install --save-dev jest
Issues with babel, etc.
- Follow:
  - https://codeburst.io/https-chidume-nnamdi-com-npm-module-in-typescript-12b3b22f0724
- Setup tsconfig.json:
  - "esModuleInterop": true
- https://jestjs.io/docs/en/getting-started
  - npm i -D babel-jest @babel/core @babel/preset-env
  - Create babel.config.js
  - https://itnext.io/step-by-step-building-and-publishing-an-npm-typescript-package-44fe7164964c
    - jestconfig.json
https://itnext.io/step-by-step-building-and-publishing-an-npm-typescript-package-44fe7164964c
For detailed instructions on bit.dev: https://paper.dropbox.com/doc/Integrating-Node-Projects-with-Bit--BDNpRKLuMzDtsiRXXhkLgPWOAg-nsRTbQ2RqdOAgr8dYLfLl

Known issues:

There is an issue because the dependency on color.js which uses ES2021 syntax you may get an error like "You may need an additional loader to handle the result of these loaders" on the line that writes a number like "0.039_245". To fix see: facebook/create-react-app#9468 and change the bottom of package.json the "browserslist" to

  "browserslist": [
    ">0.2%",
    "not dead",
    "not op_mini all"
  ]

Also have to delete /node_modules/.cache