typescript - Angular 2 - Can't find module angular/core -

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i'm coming here , asking question has been answered in post, solutions don't work. so, i'm creating new angular2 app quickstart folder of angular website.

i've done npm install , okay, have node_modules folder @ root.

but, when i'm doing ng serve, error got :

error in angular/src/app/app.component.ts (1,27): cannot find module '@angular/core'. error in angular/src/app/app.component.ts (8,14): experimental support decorators feature subject change in future release. set 'experimentaldecorators' option remove warning. error in angular/src/app/app.module.ts (1,31): cannot find module '@angular/platform-browser'. error in angular/src/app/app.module.ts (2,26): cannot find module '@angular/core'. error in angular/src/app/app.module.ts (16,14): experimental support decorators feature subject change in future release. set 'experimentaldecorators' option remove warning. error in angular/src/main.ts (1,32): cannot find module '@angular/core'. error in angular/src/main.ts (2,40): cannot find module '@angular/platform-browser-dynamic'.

this folder structure :

enter image description here

and tsconfig.json :

{   "compileroptions": {     "target": "es5",     "module": "commonjs",     "moduleresolution": "node",     "sourcemap": true,     "emitdecoratormetadata": true,     "experimentaldecorators": true,     "lib": [ "es2015", "dom" ],     "noimplicitany": true,     "suppressimplicitanyindexerrors": true,     "typeroots": [       "../node_modules/@types/"     ]   },   "compileonsave": true,   "exclude": [     "node_modules/*",     "**/*-aot.ts"   ] }

edit :

this app.module.ts :

import { browsermodule } '@angular/platform-browser'; import { ngmodule } '@angular/core';  import { appcomponent } './app.component';  @ngmodule({   declarations: [     appcomponent   ],   imports: [     browsermodule   ],   providers: [],   bootstrap: [appcomponent] }) export class appmodule { }

i went through tsconfig.json file , found tsconfig.json differs mine. "include" & "exclude" key values pairs different. have look.

tsconfig.json

{   "compileroptions": {     "allowsyntheticdefaultimports": true,     "declaration": false,     "emitdecoratormetadata": true,     "experimentaldecorators": true,     "lib": [       "dom",       "es2015"     ],     "module": "es2015",     "moduleresolution": "node",     "sourcemap": true,     "target": "es5"   },   "include": [     "src/**/*.ts"   ],   "exclude": [     "node_modules"   ],   "compileonsave": false,   "atom": {     "rewritetsconfig": false   } }




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