31 lines
945 B
JavaScript
31 lines
945 B
JavaScript
/* eslint-disable prefer-const */
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var index = 0;
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var genNanoid = function genNanoid() {
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var t = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 21;
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if (typeof window === 'undefined') return (index += 1).toFixed(0);
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if (!window.crypto) return (index += 1).toFixed(0);
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var e = '',
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r = crypto.getRandomValues(new Uint8Array(t));
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// eslint-disable-next-line no-param-reassign
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for (; t--;) {
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var n = 63 & r[t];
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e += n < 36 ? n.toString(36) : n < 62 ? (n - 26).toString(36).toUpperCase() : n < 63 ? '_' : '-';
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}
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return e;
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};
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/**
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* 生成uuid，如果不支持 randomUUID，就用 genNanoid
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*
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* @returns string
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*/
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export var nanoid = function nanoid() {
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if (typeof window === 'undefined') return genNanoid();
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// @ts-ignore
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if (window.crypto && window.crypto.randomUUID && typeof crypto.randomUUID == 'function') {
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// @ts-ignore
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return crypto.randomUUID();
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}
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return genNanoid();
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}; |