{
  "compilerOptions": {
    "experimentalDecorators": true,
    "target": "es5",
    "module": "system",
    "sourceMap": true
  },
  "exclude": [
    "wwwroot",
    "node_modules",
    "src/jspm_packages",
    "typings/index.d.ts"
  ]
}

{
  "compilerOptions": {
    "experimentalDecorators": true,
    "target": "es5",
    "module": "system",
    "sourceMap": false
  },
  "exclude": [
    "wwwroot",
    "node_modules",
    "src/jspm_packages",
    "typings/index.d.ts"
  ]
}

Disable source maps for tsc. we use gulp-sourcemaps for that.
Disable source maps for tsc.
 we use gulp-sourcemaps for that.
