angular-docs-cn/aio/tools/firebase-test-utils/FirebaseRedirect.ts

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import * as XRegExp from 'xregexp';
import { FirebaseGlob } from './FirebaseGlob';
export class FirebaseRedirect {
glob = new FirebaseGlob(this.source);
constructor(public source: string, public destination: string) {}
replace(url: string): string | undefined {
const match = this.glob.match(url);
if (!match) {
return undefined;
}
const paramReplacers = Object.keys(this.glob.namedParams).map(name => [ XRegExp(`:${name}`, 'g'), match[name] ]);
const restReplacers = Object.keys(this.glob.restParams).map(name => [ XRegExp(`:${name}\\*`, 'g'), match[name] ]);
return XRegExp.replaceEach(this.destination, [...paramReplacers, ...restReplacers]);
}
}