koa-mount-express
v1.0.1
Published
Mount an Express app in Koa
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koa-mount-express
Mount Express applications within a Koa application as middleware. The path
passed to mountExpress()
is removed from the ctx.req.url
before directing ctx.req
and ctx.res
to the Express app.
This is useful for mounting an external Express app within your own Koa app.
Installation
npm install koa-mount-express
Usage
import express from "express";
import Koa from "koa";
import mountExpress from "koa-mount-express";
const app = new Koa();
const expressApp = express();
app.use(mountExpress("/express", expressApp));
app.listen(3000);
Example
import express from "express";
import Koa from "koa";
import mountExpress from "koa-mount-express";
const app = new Koa();
const expressApp = express();
expressApp.get("/", function (req, res) {
res.send("Hello Express");
});
expressApp.get("/route", function (req, res) {
res.send("Hello Express toute");
});
// this will mount express app on /express route
// Note: this should be before other koa middleware
app.use(mountExpress("/express", expressApp));
app.use((ctx) => {
ctx.body = "Hello Koa";
});
app.listen(3000);
Example responses:
GET /
Hello Koa
GET /express
Hello Express
GET /route
Hello Express route
GET /express/not-a-route
Cannot GET /not-a-route