Convert JavaScript React components to TypeScript

convert.sh

#!/bin/bash

# usage: ./convert.sh src/components
PATH_TO_JS=$1

git clone git@github.com:lyft/react-javascript-to-typescript-transform.git
pushd react-javascript-to-typescript-transform
yarn install
popd

# convert using local clone of transform to get unpublished --ignore-prettier-errors
find $PATH_TO_JS -iname '*.js' -exec node react-javascript-to-typescript-transform/dist/cli.js --ignore-prettier-errors {} \;

# however this will complain, and potentially result in invalid code.
# produces `export defaut const TheComponent =`, so we manually fix those.
find $PATH_TO_JS -iname '*.tsx' -exec node -p 'filepath="{}";file=fs.readFileSync(filepath,"utf8");match=file.match(/export default const\s([a-zA-Z_$][a-zA-z0-9_$]*)/);if(!match)process.exit();identifier=match[1];replaced=file.replace(/export default const/,"const");replaced=replaced+"\nexport default " + identifier;fs.writeFileSync(filepath, replaced);' \;