Import all Firebase Functions.

index.ts

import { sync } from 'glob';
import { camelCase, last } from 'lodash';

const files = sync('./**/*.function.[tj]s', { cwd: __dirname, ignore: './node_modules/**' });
for (let f = 0, fl = files.length; f < fl; f += 1) {
  const file = files[f];
  const functionName = camelCase(last(file.slice(0, -12).split('/'))); // Strip off '.function.js'
  if (!process.env.FUNCTION_NAME || process.env.FUNCTION_NAME === functionName) {
    // eslint-disable-next-line import/no-dynamic-require, global-require
    exports[functionName] = require(file);
  }
}