NPM INSTALL does not recreates .js files from .ts files - node.js

Question

I am trying to compile my angular2/typescript files to javascript files.
"npm install" (without any warnings or errors)
creates node_modules, but not recreates .js files form my .ts files and angular modules does not updates.
My tsconfig.json
{
"compilerOptions": {
"target": "es5",
"module": "commonjs",
"moduleResolution": "node",
"sourceMap": true,
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"removeComments": false,
"noImplicitAny": false,
"suppressImplicitAnyIndexErrors": true
},
"files": [
],
"exclude": [
"node_modules",
"scripts"
],
"compileOnSave": true
}
and package.json:
{
"name": "angular-quickstart",
"version": "1.0.0",
"private": true,
"scripts": {
"start": "tsc && concurrently \"npm run tsc:w\" \"npm run lite\" ",
"lite": "lite-server",
"postinstall": "typings install",
"tsc": "tsc",
"tsc:w": "tsc -w",
"typings": "typings"
},
"license": "ISC",
"dependencies": {
"#angular/common": "2.0.0",
"#angular/compiler": "2.0.0",
"#angular/core": "2.0.0",
"#angular/forms": "2.0.0",
"#angular/http": "2.0.0",
"#angular/platform-browser": "2.0.0",
"#angular/platform-browser-dynamic": "2.0.0",
"#angular/router": "3.0.0",
"#angular/upgrade": "2.0.0",
"angular2-in-memory-web-api": "0.0.20",
"bootstrap": "^3.3.6",
"core-js": "^2.4.1",
"react-redux": "^4.4.5",
"reflect-metadata": "^0.1.3",
"rxjs": "5.0.0-beta.12",
"systemjs": "0.19.27",
"zone.js": "^0.6.23",
"react-super-components": "^0.3.5",
"redux": "^3.5.2",
"redux-thunk": "^2.1.0",
"param-store":"^1.0.0"
},
"devDependencies": {
"concurrently": "^2.2.0",
"lite-server": "^2.2.2",
"typescript": "^2.0.2",
"typings": "^1.3.2"
}
}
after NPM START there is
1] 16.09.23 14:05:50 404 POST /api/logging
[1] 16.09.23 14:05:50 404 POST /api/logging
[1] 16.09.23 14:05:50 404 POST /api/logging
[1] 16.09.23 14:05:50 404 POST /api/logging
[1] 16.09.23 14:05:50 404 POST /api/logging
[1] 16.09.23 14:05:50 404 POST /api/logging
[1] 16.09.23 14:05:50 404 POST /api/logging
[1] 16.09.23 14:05:50 404 POST /api/logging
in log and it's never ends.
What can i check?

Answer 1

npm install will just install the mentioned packages in package.json file.
to generate js code you need to run
npm start
which will run typescript compiler in watch mode and will transpile ts code to js code.
look here what npm start command does:
start": "tsc && concurrently \"npm run tsc:w\" \"npm run lite\"

Answer 2

npm install will install the packages listed in package.json
If the typings folder doesn't show up after running npm install, you'll need to install it manually with the command:
npm run typings install
You need to run npm start
This command runs the following two parallel node processes:
The TypeScript compiler in watch mode which will take of transpiling from typescript to javascript.
A static file server called lite-server that loads index.html in a browser and refreshes the browser when application files change.