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

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import * as XRegExp from 'xregexp';
import { FirebaseRedirectConfig } from './FirebaseRedirector';
import { FirebaseRedirectSource } from './FirebaseRedirectSource';
export class FirebaseRedirect {
source: FirebaseRedirectSource;
destination: string;
constructor({source, regex, destination}: FirebaseRedirectConfig) {
this.source = (typeof source === 'string') ?
FirebaseRedirectSource.fromGlobPattern(source) :
FirebaseRedirectSource.fromRegexPattern(regex!);
this.destination = destination;
}
replace(url: string): string | undefined {
const match = this.source.match(url);
if (!match) {
return undefined;
}
const namedReplacers = this.source.namedGroups.map<[RegExp, string]>(name => [ XRegExp(`:${name}`, 'g'), match[name] ]);
const restReplacers = this.source.restNamedGroups.map<[RegExp, string]>(name => [ XRegExp(`:${name}\\*`, 'g'), match[name] ]);
return XRegExp.replaceEach(this.destination, [...namedReplacers, ...restReplacers]);
}
}