api-secrets.js

// pages/api/my-api-call.js
const fetch = require("node-fetch");

export default async (req, res) => {
  try {
    const apiCall = await fetch(`http://api-path?api-key=${process.env.SECRET_KEY}`);
    if (apiCall.response.status === 200) {
      res.status(200).json({});
      res.end();
      return res;
    }
  } catch (error) {
    console.log(error);
  } 
}

// components/MyComponent
const myFunction = async () => {
  const res = await fetch('/api/my-api-call');
}