Rename files with Flow annotation to TypeScript

rename-flow-to-typescript.js

const { genSummarizedReport } = require('flow-annotation-check');
const fs = require('fs');

const options = {
  include: ['src/**/*.js'],
  exclude: ['+(node_modules|build|flow-typed)/**/*.js'],
  absolute: true,
};

function renameFile(srcPath, srcExt, destExt) {
  const destPath = srcPath.replace(srcExt, destExt);

  fs.rename(srcPath, destPath, err => {
    if (err) throw err;
    console.log(srcPath);
    console.log(destPath);
  });
}

genSummarizedReport('.', options).then(report => {
  console.log('Running on JS files...', report.files.length);
  report.files.filter(entry => entry.status === 'flow').forEach(entry => renameFile(entry.file, /.js$/, '.ts'));
});

const optionsReact = {
  include: ['src/**/*.jsx'],
  exclude: ['+(node_modules|build|flow-typed)/**/*.jsx'],
  absolute: true,
};

genSummarizedReport('.', optionsReact).then(report => {
  console.log('Running on JSX files...', report.files.length);
  report.files.filter(entry => entry.status === 'flow').forEach(entry => renameFile(entry.file, /.jsx$/, '.tsx'));
});