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