Typescript compile on save is not working when tsconfig.json is in project

Question

I can't make visual studio to run typescript compilation to js when I save.

I have an xproj (asp.net core with net framework) TypeScript 2.0.3 tools for Visual studio 2015 update 3.

I have tried to enable "watch" : true in tsconfig.json but it says that current host is not supported.

I went to Tools > Options > Text Editor > TypeScript > Project and enabled "automatically compile TypeScript files which are not part of project"

Still, changes in .ts files will be reflected in .js files only during compilation, but only when there are changes in c# sever-side files that has to be compiled.

EDIT: I have figured out that simple existance of tsconfig.json in the project directory will prevent compilation on save even if the config file is empty.

Can that be fixed somehow currently?

This is the content of my tsconfig.json:

{
  "compilerOptions": {
    "target": "es5",
    "module": "commonjs",
    "moduleResolution": "node",
    "sourceMap": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "removeComments": false,
    "noImplicitAny": false,
    "diagnostics": true
  },
  "include": [
    "**/*.ts"
  ],
  "exclude": [
    "node_modules"
  ]
}

EDIT 2: I also tried:

{
  "compileOnSave": true,
  "compilerOptions": {
    "target": "es5",
    "module": "commonjs",
    "moduleResolution": "node",
    "sourceMap": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "removeComments": false,
    "noImplicitAny": false,
    "diagnostics": true
  },
  "filesGlob": [
    "**/*.ts"
  ],
  "exclude": [
    "node_modules"
  ]
}

and it didn't do anything.

Answer 1

I uninstalled Visual Studio 2015 and Typescript 2.0.3. Then I reinstalled Visual Studio 2015. After opening my solution and checked Typescript 1.8.3, I installed Typescript 2.0.3 and added "compileOnSave" before "compilerOptions". Since then it works for me. You need to restart Visual Studio after adding this option.

{
  "compileOnSave": true,
  "compilerOptions": {
  ...
}

Answer 2

Adding "compileOnSave":true to tsconfig.json should do the trick:

{
  "compileOnSave": true,
  "compilerOptions": {
  ...