Bookmark to read local file

read-local-file.js

copy(
  encodeURIComponent(`(function() {
    function readLocalFile(e) {
      const file = e.target.files[0];
      if (!file) {
        alert('No file selected!')
      }
      const reader = new FileReader();
      reader.onload = function(e) {
        const contents = e.target.result;
        localStorage.setItem('mock', contents)
      };
      reader.readAsText(file);
    }
  
    const element = document.createElement('input');
    element.type = 'file';
    element.addEventListener('change', readLocalFile, false);
    element.click();
  })();`)
);