require(path.resolve(filePath)) to import statement

Question

I have autoLoad script for ExpressJS application written in JS and currently we are migrating to TypeScript

export const loadModels = () => {
  glob('modules/*/**.model.js', (err, files) => {
    if (!err) {
      files.forEach((filePath) => {
        require(path.resolve(filePath));
      });
    }
  });
};
export const loadRoutes = (app: express.Application) => {
  glob('modules/*/**.routes.js', (err, files) => {
    if (!err) {
      files.forEach((filePath) => {
        require(path.resolve(filePath))(app);
      });
    }
  });
};

How to change require(path.resolve(filePath)); and require(path.resolve(filePath))(app); to import statement?

This is sample route file

import config from './../../config';
import express from 'express';
import QuestionCtrl from './question.controller';
import { EventEmitter } from 'events';

export default (app: express.Application, events: EventEmitter) => {
  const questionCtrl = new QuestionCtrl(events);
  app.route(`${config.app.apiBase}/questions`).post(questionCtrl.create);
};

jcragun · Accepted Answer · 2019-02-15 17:05:56Z

1

You could probably utilize dynamic imports. For example:

export const loadRoutes = async (app: express.Application) => {
  glob('modules/*/**.routes.js', async (err, files) => {
    if (!err) {
      for (filePath of files) {
        const route = await import(path.resolve(filePath));
        route(app);
      };
    }
  });
};

edited Feb 15, 2019 at 17:05

answered Feb 13, 2019 at 7:04

jcragun

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5 Comments

user2473015 Over a year ago

Cannot find name 'filePath'. for (filePath of files) { ~~~~~~~~ error TS1308: 'await' expression is only allowed within an async function. const route = await import(path.resolve(filePath)); ~~~~~ error TS2304: Cannot find name 'filePath'. const route = await import(path.resolve(filePath));

user2473015 Over a year ago

Now got TypeError: route is not a function

jcragun Over a year ago

What's an example of one of your route files? Depending on how things are exported in the route file, it may need to be something like route.exportName(app).

jcragun Over a year ago

I updated my code to include async on the glob callback - without it I'm not sure how you even got it to build. Does that fix it?

user2473015 Over a year ago

I fixed it my own and TypeError: route is not a function is the problem now

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