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| /* | |
| * Copyright (c) 2016-2020 Martin Donath <martin.donath@squidfunk.com> | |
| * | |
| * Permission is hereby granted, free of charge, to any person obtaining a copy | |
| * of this software and associated documentation files (the "Software"), to | |
| * deal in the Software without restriction, including without limitation the | |
| * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or | |
| * sell copies of the Software, and to permit persons to whom the Software is | |
| * furnished to do so, subject to the following conditions: | |
| * | |
| * The above copyright notice and this permission notice shall be included in | |
| * all copies or substantial portions of the Software. | |
| * | |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE | |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
| * IN THE SOFTWARE. | |
| */ | |
| import { Observable } from "rxjs" | |
| import { map, shareReplay, take } from "rxjs/operators" | |
| /* ---------------------------------------------------------------------------- | |
| * Helper types | |
| * ------------------------------------------------------------------------- */ | |
| /** | |
| * Watch options | |
| */ | |
| interface WatchOptions { | |
| location$: Observable<URL> /* Location observable */ | |
| } | |
| /* ------------------------------------------------------------------------- */ | |
| /** | |
| * Watch location base | |
| * | |
| * @return Location base observable | |
| */ | |
| export function watchLocationBase( | |
| base: string, { location$ }: WatchOptions | |
| ): Observable<string> { | |
| return location$ | |
| .pipe( | |
| take(1), | |
| map(({ href }) => new URL(base, href) | |
| .toString() | |
| .replace(/\/$/, "") | |
| ), | |
| shareReplay({ bufferSize: 1, refCount: true }) | |
| ) | |
| } |