28 lines
1015 B
TypeScript
28 lines
1015 B
TypeScript
import * as XRegExp from 'xregexp';
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import { FirebaseRedirectConfig } from './FirebaseRedirector';
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import { FirebaseRedirectSource } from './FirebaseRedirectSource';
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export class FirebaseRedirect {
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source: FirebaseRedirectSource;
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destination: string;
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constructor({source, regex, destination}: FirebaseRedirectConfig) {
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this.source = (typeof source === 'string') ?
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FirebaseRedirectSource.fromGlobPattern(source) :
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FirebaseRedirectSource.fromRegexPattern(regex!);
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this.destination = destination;
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}
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replace(url: string): string | undefined {
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const match = this.source.match(url);
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if (!match) {
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return undefined;
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}
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const namedReplacers = this.source.namedGroups.map<[RegExp, string]>(name => [ XRegExp(`:${name}`, 'g'), match[name] ]);
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const restReplacers = this.source.restNamedGroups.map<[RegExp, string]>(name => [ XRegExp(`:${name}\\*`, 'g'), match[name] ]);
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return XRegExp.replaceEach(this.destination, [...namedReplacers, ...restReplacers]);
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}
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}
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