Import Chrome search keywords

import-chrome.js

(async function importSEs() {
  /* Auxiliary function to open a file selection dialog */
  function selectFileToRead() {
    return new Promise((resolve) => {
      const input = document.createElement('input');
      input.setAttribute('type', 'file');
      input.addEventListener('change', (e) => {
        resolve(e.target.files[0]);
      }, false);
      input.click();
    });
  }

  /* Auxiliary function to read data from a file */
  function readFile(file) {
    return new Promise((resolve) => {
      const reader = new FileReader();
      reader.addEventListener('load', (e) => {
        resolve(e.target.result);
      });
      reader.readAsText(file);
    });
  }

  const file = await selectFileToRead();
  const content = await readFile(file);
  const searchEngines = JSON.parse(content);
  searchEngines.forEach(({ name, keyword, url }) => {
    /* Actual search engine import magic */
    chrome.send('searchEngineEditStarted', [-1]);
    chrome.send('searchEngineEditCompleted', [name, keyword, url]);
  });
}());