ApiGateway.ts

function getFileHash(): string {
  const filename = path.basename(__filename);
  const fileContents = fs.readFileSync(filename);
  return crypto.createHash("sha256").update(fileContents).digest("hex");
}

const deployment = new aws.apigateway.Deployment("deployment", {
    restApi: Api.id,
    triggers: {
      filechanged: getFileHash(),
    },
  });