@tsed/platform-multer/lib/esm/adapters/koa/MulterModule.js

Multer adapter package for Ts.ED framework

import { promisify } from "node:util";
import { injectable } from "@tsed/di";
import { MULTER_MODULE } from "../../common/index.js";
/**
 * @ignore
 */
function createRawMiddleware(middleware) {
    return async (request) => {
        const ctx = request.ctx;
        await middleware(ctx.req, ctx.res);
        const forwardKey = (key) => {
            if (ctx.req[key]) {
                ctx.request[key] = ctx.req[key];
                ctx[key] = ctx.req[key];
                delete ctx.req[key];
            }
        };
        if ("request" in ctx) {
            if (ctx.req.body) {
                ctx.request.body = ctx.req.body;
                delete ctx.req.body;
            }
            forwardKey("file");
            forwardKey("files");
        }
    };
}
/**
 * @ignore
 */
function makePromise(multer, name) {
    // istanbul ignore next
    if (!multer[name])
        return;
    const fn = multer[name];
    multer[name] = function apply(...args) {
        const middleware = Reflect.apply(fn, this, args);
        return createRawMiddleware(promisify(middleware));
    };
}
async function factory() {
    const { default: multer } = await import("multer");
    return {
        multer,
        get(options) {
            const instance = multer(options);
            makePromise(instance, "any");
            makePromise(instance, "array");
            makePromise(instance, "fields");
            makePromise(instance, "none");
            makePromise(instance, "single");
            return instance;
        }
    };
}
injectable(MULTER_MODULE).asyncFactory(factory).token();