40 lines
927 B
JavaScript
40 lines
927 B
JavaScript
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/**
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* @typedef {UrlHistoryItem[]} UrlHistoryArray
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*/
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/**
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* @typedef {Object} UrlHistoryItem
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* @prop {string} path
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* @prop {number} time
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*/
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/**
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* Represents a validated history
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*/
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class UrlHistory {
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constructor(urlHistory) {
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this.history = urlHistory && UrlHistory.isValidHistory(urlHistory) ? urlHistory : [];
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}
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get length() {
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return this.history.length;
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}
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/**
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* Iterate from latest item to newest item (reversed!)
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*/
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*[Symbol.iterator]() {
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yield* this.history.slice().reverse();
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}
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static isValidHistory(history) {
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return Array.isArray(history) && !history.find(item => !this.isValidHistoryItem(item));
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}
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static isValidHistoryItem(item) {
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return !!item && !!item.path && !!item.time && typeof item.path === 'string' && typeof item.time === 'number' && Number.isSafeInteger(item.time);
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}
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}
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module.exports = UrlHistory;
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