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| author | ruki <waruqi@gmail.com> | 2018-11-08 00:38:48 +0800 |
|---|---|---|
| committer | ruki <waruqi@gmail.com> | 2018-11-07 21:53:09 +0800 |
| commit | 26105034da4fcce7ac883c899d781f016559310d (patch) | |
| tree | c459a5dc4e3aa0972d9919033ece511ce76dd129 /node_modules/core-js/library/modules/_array-reduce.js | |
| parent | 2c77f00f1a7ecb6c8192f9c16d3b2001b254a107 (diff) | |
| download | xmake-docs-26105034da4fcce7ac883c899d781f016559310d.tar.gz xmake-docs-26105034da4fcce7ac883c899d781f016559310d.zip | |
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Diffstat (limited to 'node_modules/core-js/library/modules/_array-reduce.js')
| -rw-r--r-- | node_modules/core-js/library/modules/_array-reduce.js | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/node_modules/core-js/library/modules/_array-reduce.js b/node_modules/core-js/library/modules/_array-reduce.js new file mode 100644 index 00000000..8596ac70 --- /dev/null +++ b/node_modules/core-js/library/modules/_array-reduce.js @@ -0,0 +1,28 @@ +var aFunction = require('./_a-function'); +var toObject = require('./_to-object'); +var IObject = require('./_iobject'); +var toLength = require('./_to-length'); + +module.exports = function (that, callbackfn, aLen, memo, isRight) { + aFunction(callbackfn); + var O = toObject(that); + var self = IObject(O); + var length = toLength(O.length); + var index = isRight ? length - 1 : 0; + var i = isRight ? -1 : 1; + if (aLen < 2) for (;;) { + if (index in self) { + memo = self[index]; + index += i; + break; + } + index += i; + if (isRight ? index < 0 : length <= index) { + throw TypeError('Reduce of empty array with no initial value'); + } + } + for (;isRight ? index >= 0 : length > index; index += i) if (index in self) { + memo = callbackfn(memo, self[index], index, O); + } + return memo; +}; |
