src/utils/id.js

// Generate unique IDs for use as pseudo-private/protected names.
// Similar in concept to
// <http://wiki.ecmascript.org/doku.php?id=strawman:names>.
//
// The goals of this function are twofold:
//
// * Provide a way to generate a string guaranteed to be unique when compared
//   to other strings generated by this function.
// * Make the string complex enough that it is highly unlikely to be
//   accidentally duplicated by hand (this is key if you're using `ID`
//   as a private/protected name on an object).
//
// Use:
//
//     var privateName = ID();
//     var o = { 'public': 'foo' };
//     o[privateName] = 'bar';
export function id() {
  // Math.random should be unique because of its seeding algorithm.
  // Convert it to base 36 (numbers + letters), and grab the first 9 characters
  // after the decimal.
  return (
    '_' +
    Math.random()
      .toString(36)
      .substr(2, 9)
  );
}

export function generateKey(containerKey, columnId) {
  return `${containerKey}.${columnId}`;
}

export function guid() {
  function s4() {
    return Math.floor((1 + Math.random()) * 0x10000)
      .toString(16)
      .substring(1);
  }
  return (
    s4() +
    s4() +
    '_' +
    s4() +
    '_' +
    s4() +
    '_' +
    s4() +
    '_' +
    s4() +
    s4() +
    s4()
  );
}