Example using ReScript as a pure js library

index.mjs is a word counting program.

It use the Belt.Map module from ReScript standard library.

You can run it via node ./index.mjs

You can also bundle it into index.bundle.mjs

npx esbuild index.mjs --bundle --platform=node --outfile=index.bundle.mjs --minify-syntax --format=esm

The great thing with Belt.Map libraries is that it is functional and support custom data type.

The experience could be improved in the future, e.g, generating typescript declarations.