diff options
Diffstat (limited to 'node_modules/core-js/modules/esnext.iterator.take.js')
| -rw-r--r-- | node_modules/core-js/modules/esnext.iterator.take.js | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/node_modules/core-js/modules/esnext.iterator.take.js b/node_modules/core-js/modules/esnext.iterator.take.js new file mode 100644 index 0000000..93e3604 --- /dev/null +++ b/node_modules/core-js/modules/esnext.iterator.take.js @@ -0,0 +1,27 @@ +'use strict'; +// https://github.com/tc39/proposal-iterator-helpers +var $ = require('../internals/export'); +var anObject = require('../internals/an-object'); +var toPositiveInteger = require('../internals/to-positive-integer'); +var createIteratorProxy = require('../internals/iterator-create-proxy'); +var iteratorClose = require('../internals/iterator-close'); + +var IteratorProxy = createIteratorProxy(function (arg) { + var iterator = this.iterator; + if (!this.remaining--) { + this.done = true; + return iteratorClose(iterator); + } + var result = anObject(this.next.call(iterator, arg)); + var done = this.done = !!result.done; + if (!done) return result.value; +}); + +$({ target: 'Iterator', proto: true, real: true }, { + take: function take(limit) { + return new IteratorProxy({ + iterator: anObject(this), + remaining: toPositiveInteger(limit) + }); + } +}); |
