1 | export default function uniq(arr, cache) {
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2 | if (cache === void 0) { cache = new Map(); }
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3 | var r = [];
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4 | if (Array.isArray(arr)) {
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5 | for (var i = 0, len = arr.length; i < len; i++) {
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6 | var item = arr[i];
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7 | // 加一个 cache,提升性能
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8 | if (!cache.has(item)) {
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9 | r.push(item);
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10 | cache.set(item, true);
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11 | }
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12 | }
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13 | }
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14 | return r;
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15 | }
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16 | //# sourceMappingURL=uniq.js.map |
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