Function valueToBoolean

docs/tests/v2/es6/js/sanddance.js:153007–153019

(value)

// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT license.
function valueToBoolean(value) {
  if (typeof value === 'string') {
    switch (value.toLowerCase()) {
      case 'true':
        return true;

      case 'false':
        return false;
    }
  }

  return !!value;
}

function valueToString(value) {
  if (value == null) {