diff options
Diffstat (limited to 'node_modules/core-js/internals/array-from.js')
| -rw-r--r-- | node_modules/core-js/internals/array-from.js | 41 |
1 files changed, 0 insertions, 41 deletions
diff --git a/node_modules/core-js/internals/array-from.js b/node_modules/core-js/internals/array-from.js deleted file mode 100644 index 490a3c2..0000000 --- a/node_modules/core-js/internals/array-from.js +++ /dev/null @@ -1,41 +0,0 @@ -'use strict'; -var bind = require('../internals/function-bind-context'); -var toObject = require('../internals/to-object'); -var callWithSafeIterationClosing = require('../internals/call-with-safe-iteration-closing'); -var isArrayIteratorMethod = require('../internals/is-array-iterator-method'); -var toLength = require('../internals/to-length'); -var createProperty = require('../internals/create-property'); -var getIteratorMethod = require('../internals/get-iterator-method'); - -// `Array.from` method implementation -// https://tc39.github.io/ecma262/#sec-array.from -module.exports = function from(arrayLike /* , mapfn = undefined, thisArg = undefined */) { - var O = toObject(arrayLike); - var C = typeof this == 'function' ? this : Array; - var argumentsLength = arguments.length; - var mapfn = argumentsLength > 1 ? arguments[1] : undefined; - var mapping = mapfn !== undefined; - var iteratorMethod = getIteratorMethod(O); - var index = 0; - var length, result, step, iterator, next, value; - if (mapping) mapfn = bind(mapfn, argumentsLength > 2 ? arguments[2] : undefined, 2); - // if the target is not iterable or it's an array with the default iterator - use a simple case - if (iteratorMethod != undefined && !(C == Array && isArrayIteratorMethod(iteratorMethod))) { - iterator = iteratorMethod.call(O); - next = iterator.next; - result = new C(); - for (;!(step = next.call(iterator)).done; index++) { - value = mapping ? callWithSafeIterationClosing(iterator, mapfn, [step.value, index], true) : step.value; - createProperty(result, index, value); - } - } else { - length = toLength(O.length); - result = new C(length); - for (;length > index; index++) { - value = mapping ? mapfn(O[index], index) : O[index]; - createProperty(result, index, value); - } - } - result.length = index; - return result; -}; |
