The post install script is removing existing tsconfig.json

[NickIliev]

When you have project with existing tsconfig.json it is not respected and is removed by postinstall.js at this line.

How to reproduce:

• create project with modified tsconfig.json

  {
  "compilerOptions": {
      "module": "commons",
      "target": "es5",
      "sourceMap": true,
      "experimentalDecorators": true,
      "emitDecoratorMetadata": true,
      "noEmitHelpers": true,
      "noEmitOnError": true,
      "lib": [
          "es2016"
      ]
  },
  "exclude": [
      "node_modules",
      "platforms",
      "files" <!-- this is added  -->
  ]
  }

• remove previously generated node_modules and platforms folders

  rm -rf node_modules
  rm -rf platforms

• rebuild your app

  tons run android

The result is that your original tsconfig.json is removed and replaced with a default one

{
    "compilerOptions": {
        "module": "commons",
        "target": "es5",
        "sourceMap": true,
        "experimentalDecorators": true,
        "emitDecoratorMetadata": true,
        "noEmitHelpers": true,
        "noEmitOnError": true,
        "lib": [
            "es2016"
        ]
    },
    "exclude": [
        "node_modules",
        "platforms",  
    ]
}

[NickIliev]

Fixed with PRhttps://github.com/NativeScript/nativescript-dev-typescript/pull/15