@cellularjs/express-proxy

_🐘

1. Example

Example 1: create a proxy for JSON api.
``ts
// $share/express-proxy/index.ts
import { expressProxy, InputTransform, OutputTransform } from '@cellularjs/express-proxy';

const inputTransform: InputTransform = (req, proxyTo) => {
return new IRQ(
{ to: proxyTo },
{ ...req.query, ...req.params, ...req.body },
);
}

const outputTransform: OutputTransform = (expressCtx, cellularCtx) => {
const { res } = expressCtx;
const { irs } = cellularCtx;

res
.status(irs.header.status)
.json(irs.body);
}

export const proxyTo = expressProxy(
{ inputTransform, outputTransform },
localTransporter,
);
`

`ts
// iam/$gateway/http/index.ts
import { Router } from 'express';
import { proxyTo } from '$share/express-proxy';

export const iamRouter = Router();

iamRouter.post('/groups/add-user-to-group', proxyTo('IAM:AddUserToGroup'));
`

Example 2: override base proxy config for individual endpoint.
`ts
// iam/$gateway/http/index.ts
import { Router } from 'express';
import { proxyTo } from '$share/express-proxy';

export const iamRouter = Router();

iamRouter.get('/users', proxyTo('IAM:ListUsers', {
outputTransform: (expressCtx, cellularCtx) => {
const { res } = expressCtx;
const { irs } = cellularCtx;

res.send(

${JSON.stringify(irs.body)}

);
},
}));
``