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19 lines
328 B
JavaScript
19 lines
328 B
JavaScript
"use strict";
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module.exports = function map(iterable, mapper) {
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if (Array.isArray(iterable)) {
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// This may have an optimized implementation
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return iterable.map(mapper);
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} else {
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let result = [];
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let i = 0;
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for (let item of iterable) {
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result.push(mapper(item, i, iterable));
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i++;
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}
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return result;
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}
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};
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