35 lines
998 B
TypeScript
35 lines
998 B
TypeScript
import {RequestHandler} from "express";
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import {NextFunction, Request, Response} from "express-serve-static-core";
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import Application from "./Application.js";
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import {Type} from "./Utils.js";
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export default abstract class Middleware {
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public constructor(
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protected readonly app: Application,
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) {
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}
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protected abstract handle(req: Request, res: Response, next: NextFunction): Promise<void>;
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public getRequestHandler(): RequestHandler {
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return async (req, res, next): Promise<void> => {
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try {
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if (req.middlewares.find(m => m.constructor === this.constructor)) {
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next();
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} else {
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req.middlewares.push(this);
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return await this.handle(req, res, next);
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}
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} catch (e) {
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next(e);
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}
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};
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}
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}
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export interface MiddlewareType<M extends Middleware> extends Type<M> {
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new(app: Application): M;
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}
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