Generic Chain

Create Middleware by chaining functions. Based on benawad/graphql-chain

Install

yarn add generic-chain

How to use

Step 1

Create middlewares

const validate: MiddlewareResolver = (
  next,
  ctx
) => {
  if (ctx.name.length > 10) {
    throw new Error("too long");
  }

  return next();
};

Step 2

Chain Middleware

import { chain } from "generic-chain";

// chain all your middlewares
const testMiddleware = chain([
  validate,
  cache,
]);

Step 3

Run the Chain

const start = testMiddleware((ctx) => {
  console.log("Oh, Hello", ctx)
	// this function runs after chain has ended
});

start(ctx); // provide the context.