text: const fs = require("fs");
  const path = require("path");
  const crypto = require("crypto");
  const chalk = require("react-dev-utils/chalk");
  const paths = require("./paths");
  
  // Ensure the certificate and key provided are valid and if not
  // throw an easy to debug error
  function validateKeyAndCerts({cert, key, keyFile, crtFile}) {
      let encrypted;
      try {
          // publicEncrypt will throw an error with an invalid cert
          encrypted = crypto.publicEncrypt(cert, Buffer.from("test"));
      } catch (err) {
          throw new Error(
              `The certificate "${chalk.yellow(crtFile)}" is invalid.\n${
                  err.message
              }`,
          );
      }
  
      try {
          // privateDecrypt will throw an error with an invalid key
          crypto.privateDecrypt(key, encrypted);
      } catch (err) {
          throw new Error(
              `The certificate key "${chalk.yellow(keyFile)}" is invalid.\n${
                  err.message
              }`,
          );
      }
  }
  
  // Read file and throw an error if it doesn't exist
  function readEnvFile(file, type) {
      if (!fs.existsSync(file)) {
          throw new Error(
              `You specified ${chalk.cyan(
                  type,
              )} in your env, but the file "${chalk.yellow(
                  file,
              )}" can't be found.`,
          );
      }
      return fs.readFileSync(file);
  }
  
  // Get the https config
  // Return cert files if provided in env, otherwise just true or false
  function getHttpsConfig() {
      const {SSL_CRT_FILE, SSL_KEY_FILE, HTTPS} = process.env;
      const isHttps = HTTPS === "true";
  
      if (isHttps && SSL_CRT_FILE && SSL_KEY_FILE) {
          const crtFile = path.resolve(paths.appPath, SSL_CRT_FILE);
          const keyFile = path.resolve(paths.appPath, SSL_KEY_FILE);
          const config = {
              cert: readEnvFile(crtFile, "SSL_CRT_FILE"),
              key: readEnvFile(keyFile, "SSL_KEY_FILE"),
          };
  
          validateKeyAndCerts({...config, keyFile, crtFile});
          return config;
      }
      return isHttps;
  }
  
  module.exports = getHttpsConfig;
  