fabric-samples/full-stack-asset-transfer-guide/applications/rest-api/tsconfig.json

{
    "compilerOptions": {
      "target": "es6",     //default is es5
      "module": "commonjs",//CommonJs style module in output
      "outDir": "dist"  ,   //change the output directory
      "resolveJsonModule": true //to import out json database
    },
    "include": [
      "src/**/*.ts"       //which kind of files to compile
    ],
    "exclude": [
      "node_modules"     //which files or directories to ignore
    ]
  }