ClientApp/aspnetcore-react.js

// This script configures the .env.development.local file with additional environment variables to configure HTTPS using the ASP.NET Core
// development certificate in the webpack development proxy.

const fs = require('fs');
const path = require('path');

const baseFolder =
  process.env.APPDATA !== undefined && process.env.APPDATA !== ''
    ? `${process.env.APPDATA}/ASP.NET/https`
    : `${process.env.HOME}/.aspnet/https`;

const certificateArg = process.argv.map(arg => arg.match(/--name=(?<value>.+)/i)).filter(Boolean)[0];
const certificateName = certificateArg ? certificateArg.groups.value : process.env.npm_package_name;

if (!certificateName) {
  console.error('Invalid certificate name. Run this script in the context of an npm/yarn script or pass --name=<<app>> explicitly.')
  process.exit(-1);
}

const certFilePath = path.join(baseFolder, `${certificateName}.pem`);
const keyFilePath = path.join(baseFolder, `${certificateName}.key`);

if (!fs.existsSync('.env.development.local')) {
  fs.writeFileSync(
    '.env.development.local',
`SSL_CRT_FILE=${certFilePath}
SSL_KEY_FILE=${keyFilePath}`
  );
} else {
  let lines = fs.readFileSync('.env.development.local')
    .toString()
    .split('\n');

  let hasCert, hasCertKey = false;
  for (const line of lines) {
    if (/SSL_CRT_FILE=.*/i.test(line)) {
      hasCert = true;
    }
    if (/SSL_KEY_FILE=.*/i.test(line)) {
      hasCertKey = true;
    }
  }
  if (!hasCert) {
    fs.appendFileSync(
      '.env.development.local',
      `\nSSL_CRT_FILE=${certFilePath}`
    );
  }
  if (!hasCertKey) {
    fs.appendFileSync(
      '.env.development.local',
      `\nSSL_KEY_FILE=${keyFilePath}`
    );
  }
}