Middleware to inject Prismic "context" into every request

middleware.ts

import express from 'express';
import Prismic from 'prismic-javascript';
import PrismicDOM from 'prismic-dom';


// Middleware to inject prismic context
const injectContext: express.RequestHandler = function (req, res, next) {
  res.locals.ctx = {
    endpoint: process.env.PRISMIC_URL,
  };

  Prismic.api(apiEndpoint, {
    req,
  }).then((api) => {
    res.locals.ctx.api = api;
    next();
  }).catch((error) => {
    next(error.message);
  });
};