Implement a middlewares function that takes any number of middleware functions and composes them into a single callable function. This composed function accepts a context, returns a Promise, and calls each middleware in order.

Each middleware is a function that receives two arguments:

• context: An object shared across all middlewares
• next: A function that invokes the next middleware in the chain

When next() is called, the next middleware should run. If a middleware does not call next, the chain stops.

The execution should be asynchronous and sequential, similar to how middleware works in frameworks like Koa.

Examples

async function fn1(ctx, next) {
  ctx.stack.push('fn1-start');
  await next();
  ctx.stack.push('fn1-end');
}

async function fn2(ctx, next) {
  ctx.stack.push('fn2-start');
  await new Promise((resolve) => setTimeout(resolve, 1000));
  await next();
  ctx.stack.push('fn2-end');
}

function fn3(ctx, next) {
  ctx.stack.push('fn3-start');
  next();
  ctx.stack.push('fn3-end');
}

const composedFn = middlewares(fn1, fn2, fn3);

const context = { stack: [] };
await composedFn(context);

console.log(context.stack);
// ['fn1-start', 'fn2-start', 'fn3-start', 'fn3-end', 'fn2-end', 'fn1-end']