Function startsWith

tasks/docs/metadata.js:21–23

* Test for prefix in string. * @param {string} str * @param {string} prefix * @return {boolean}

(str, prefix)

 * @return {boolean}
 */
function startsWith(str, prefix) {
  return str.indexOf(prefix) === 0;
}

function inArray(needle, haystack) {
  var length = haystack.length;