diff options
Diffstat (limited to 'node_modules/core-js/modules/esnext.iterator.reduce.js')
| -rw-r--r-- | node_modules/core-js/modules/esnext.iterator.reduce.js | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/node_modules/core-js/modules/esnext.iterator.reduce.js b/node_modules/core-js/modules/esnext.iterator.reduce.js new file mode 100644 index 0000000..d9be4d5 --- /dev/null +++ b/node_modules/core-js/modules/esnext.iterator.reduce.js @@ -0,0 +1,25 @@ +'use strict'; +// https://github.com/tc39/proposal-iterator-helpers +var $ = require('../internals/export'); +var iterate = require('../internals/iterate'); +var aFunction = require('../internals/a-function'); +var anObject = require('../internals/an-object'); + +$({ target: 'Iterator', proto: true, real: true }, { + reduce: function reduce(reducer /* , initialValue */) { + anObject(this); + aFunction(reducer); + var noInitial = arguments.length < 2; + var accumulator = noInitial ? undefined : arguments[1]; + iterate(this, function (value) { + if (noInitial) { + noInitial = false; + accumulator = value; + } else { + accumulator = reducer(accumulator, value); + } + }, { IS_ITERATOR: true }); + if (noInitial) throw TypeError('Reduce of empty iterator with no initial value'); + return accumulator; + } +}); |
