Automatically generate package.json exports section for TypeScript

generate-exports.sh

# Requires jj - https://github.com/tidwall/jj
#   Can be modified to use jq
#   Probably tons of unhandled edge cases
#
# Usage:
#   In a directory that looks like this:
#
#   .
#   ├── generate-exports.sh
#   ├── package.json
#   └── src
#       ├── some-folder
#       │   └── SomeScript.ts
#       ├── another-folder
#       │   └── AnotherScript.ts
#       └── LastScript.ts
#
#  Execute generate-exports.sh:
#
#  > sh generate-exports.sh
#
#  The resulting package.json will look like this:
#  {
#    "exports": {
#      ./some-folder/SomeScript": "./src/some-folder/SomeScript.js",
#      ./another-folder/AnotherScript": "./src/another-folder/AnotherScript.js",
#      ./LastScript": "./src/LastScript.js"
#    }
#  }

JSON={`find src -name "*.ts"           |
  sed 's/^\(src\/\)//'                 |
  sed 's/\(\.ts\)$//'                  |
  sed 's/.*/  ".\/&": ".\/src\/&.js"/' |
  paste -sd "," -`}

jj -i package.json -o package.json -p -r -v "$JSON" exports