diff options
Diffstat (limited to 'includes/external/school/node_modules/graphql/jsutils/safeArrayFrom.js')
-rw-r--r-- | includes/external/school/node_modules/graphql/jsutils/safeArrayFrom.js | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/includes/external/school/node_modules/graphql/jsutils/safeArrayFrom.js b/includes/external/school/node_modules/graphql/jsutils/safeArrayFrom.js deleted file mode 100644 index 3c80dee..0000000 --- a/includes/external/school/node_modules/graphql/jsutils/safeArrayFrom.js +++ /dev/null @@ -1,73 +0,0 @@ -"use strict"; - -Object.defineProperty(exports, "__esModule", { - value: true -}); -exports.default = safeArrayFrom; - -var _symbols = require("../polyfills/symbols.js"); - -function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); } - -/** - * Safer version of `Array.from` that return `null` if value isn't convertible to array. - * Also protects against Array-like objects without items. - * - * @example - * - * safeArrayFrom([ 1, 2, 3 ]) // [1, 2, 3] - * safeArrayFrom('ABC') // null - * safeArrayFrom({ length: 1 }) // null - * safeArrayFrom({ length: 1, 0: 'Alpha' }) // ['Alpha'] - * safeArrayFrom({ key: 'value' }) // null - * safeArrayFrom(new Map()) // [] - * - */ -function safeArrayFrom(collection) { - var mapFn = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : function (item) { - return item; - }; - - if (collection == null || _typeof(collection) !== 'object') { - return null; - } - - if (Array.isArray(collection)) { - return collection.map(mapFn); - } // Is Iterable? - - - var iteratorMethod = collection[_symbols.SYMBOL_ITERATOR]; - - if (typeof iteratorMethod === 'function') { - // $FlowFixMe[incompatible-use] - var iterator = iteratorMethod.call(collection); - var result = []; - var step; - - for (var i = 0; !(step = iterator.next()).done; ++i) { - result.push(mapFn(step.value, i)); - } - - return result; - } // Is Array like? - - - var length = collection.length; - - if (typeof length === 'number' && length >= 0 && length % 1 === 0) { - var _result = []; - - for (var _i = 0; _i < length; ++_i) { - if (!Object.prototype.hasOwnProperty.call(collection, _i)) { - return null; - } - - _result.push(mapFn(collection[String(_i)], _i)); - } - - return _result; - } - - return null; -} |