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Last change
on this file since e4c61dd was e4c61dd, checked in by istevanoska <ilinastevanoska@…>, 6 months ago |
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Prototype 1.1
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-
Property mode
set to
100644
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File size:
460 bytes
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| 1 | export default function reduce(values, reducer, value) {
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| 2 | if (typeof reducer !== "function") throw new TypeError("reducer is not a function");
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| 3 | const iterator = values[Symbol.iterator]();
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| 4 | let done, next, index = -1;
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| 5 | if (arguments.length < 3) {
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| 6 | ({done, value} = iterator.next());
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| 7 | if (done) return;
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| 8 | ++index;
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| 9 | }
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| 10 | while (({done, value: next} = iterator.next()), !done) {
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| 11 | value = reducer(value, next, ++index, values);
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| 12 | }
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| 13 | return value;
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| 14 | }
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