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type Item = browser.history.HistoryItem;
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const filterHttp = (items: Item[]): Item[] => {
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let httpsHosts = items.map(x => new URL(x.url as string))
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.filter(x => x.protocol === 'https:')
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.map(x => x.host);
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let hostsSet = new Set(httpsHosts);
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return items.filter((item: Item) => {
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let url = new URL(item.url as string);
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return url.protocol === 'https:' || !hostsSet.has(url.host);
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});
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};
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const filterBlankTitle = (items: Item[]): Item[] => {
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return items.filter(item => item.title && item.title !== '');
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};
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const filterByTailingSlash = (items: Item[]): Item[] => {
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let urls = items.map(item => new URL(item.url as string));
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let simplePaths = urls
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.filter(url => url.hash === '' && url.search === '')
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.map(url => url.origin + url.pathname);
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let pathsSet = new Set(simplePaths);
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return items.filter((item) => {
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let url = new URL(item.url as string);
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if (url.hash !== '' || url.search !== '' ||
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url.pathname.slice(-1) !== '/') {
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return true;
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}
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return !pathsSet.has(url.origin + url.pathname.slice(0, -1));
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});
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};
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const filterByPathname = (items: Item[], min: number): Item[] => {
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let hash: {[key: string]: Item} = {};
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for (let item of items) {
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let url = new URL(item.url as string);
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let pathname = url.origin + url.pathname;
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if (!hash[pathname]) {
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hash[pathname] = item;
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} else if ((hash[pathname].url as string).length >
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(item.url as string).length) {
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hash[pathname] = item;
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}
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}
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let filtered = Object.values(hash);
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if (filtered.length < min) {
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return items;
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}
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return filtered;
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};
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const filterByOrigin = (items: Item[], min: number): Item[] => {
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let hash: {[key: string]: Item} = {};
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for (let item of items) {
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let origin = new URL(item.url as string).origin;
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if (!hash[origin]) {
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hash[origin] = item;
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} else if ((hash[origin].url as string).length >
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(item.url as string).length) {
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hash[origin] = item;
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}
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}
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let filtered = Object.values(hash);
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if (filtered.length < min) {
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return items;
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}
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return filtered;
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};
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export {
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filterHttp, filterBlankTitle, filterByTailingSlash,
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filterByPathname, filterByOrigin
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};
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