Autofix for eslint because of React 17 new JSX transform: no-unsed-vars, import React from 'react' React is defined but never used

index.mjs

import fs from 'fs/promises'

// eslint.json must contain all files from project
// eslint ./ -o eslint.json -f json

// Only works with es6 imports
// Only works with react import on separate line
// Removes react from any line in file but only once
// Does not remove prop types

// How to run: cd your_project_dir && eslint ./ -o eslint.json -f json && node index.mjs
// Modify this simple script as you wish

let eslintJSON = await fs.readFile('eslint.json')
let json = JSON.parse(eslintJSON)
for (let file of json) {
  if(file.warningCount > 0) {
    for (let msg of file.messages) {
      if(msg.ruleId === 'no-unused-vars') {
        if(msg.message === '\'React\' is defined but never used.') {
          let script = await fs.readFile(file.filePath, 'utf8')
          let lines = script.split('\n')
          lines.splice(lines.indexOf('import React from \'react\''), 1)
          while(lines[0] === '')
            lines.shift()
          let newScript = lines.join('\n')
          fs.writeFile(file.filePath, newScript)
        }
      }
    }
  }
}