react-bootstrap-typeahead/es/utils/nodash.js

React typeahead with Bootstrap styling

var idCounter = 0;
export function head(arr) {
  return Array.isArray(arr) && arr.length ? arr[0] : undefined;
}
export function isFunction(value) {
  return typeof value === 'function';
}
export function isString(value) {
  return typeof value === 'string';
}
export function noop() {}
export function pick(obj, keys) {
  var result = {};
  keys.forEach(function (k) {
    if (Object.prototype.hasOwnProperty.call(obj, k)) {
      result[k] = obj[k];
    }
  });
  return result;
}
export function uniqueId(prefix) {
  idCounter += 1;
  return (prefix == null ? '' : String(prefix)) + idCounter;
} // Export for testing purposes.

export function valuesPolyfill(obj) {
  return Object.keys(obj).reduce(function (accum, key) {
    if (Object.prototype.propertyIsEnumerable.call(obj, key)) {
      accum.push(obj[key]);
    }

    return accum;
  }, []);
}
export function values(obj) {
  return isFunction(Object.values) ? Object.values(obj) : valuesPolyfill(obj);
}