Build an HTTPS-intercepting JavaScript proxy in 30 seconds flat

Create an index.js script: (async () => { const mockttp = require('mockttp'); // Create a proxy server with a self-signed HTTPS CA certificate: const https = await mockttp.generateCACertificate(); const server = mockttp.getLocal({ https }); // Inject 'Hello world' responses for all requests server.forAnyRequest().thenReply(200, "Hello world"); await server.start(); // Print out the server details: const caFingerprint = mockttp.generateSPKIFingerprint(https.cert) console.log(`Server running on port ${server.port}`); console.log(`CA cert fingerprint ${caFingerprint}`); })(); // (Run in an async wrapper so we can use top-level await everywhere) // Replace targets entirely with custom logic: let counter = 0; server.forAnyRequest().forHostname("google.com").thenCallback((request) => { // This…