TypeScript Cannot find name 'Promise' intellisense error - typescript2.0

Question

I am getting a red squiggly intellisense error in TypeScript 2.1.4, Visual Studio 2015 Update 3 saying Cannot find name 'Promise', for example the following code shows the error on both uses of Promise:
/// <reference path="../typings/index.d.ts" />
import 'fetch';
import {HttpClient, json} from 'aurelia-fetch-client';
import {inject} from 'aurelia-framework';
import {BearerToken} from './common/bearer-token';
export class ApiToken
{
....
public getTokenSimplified(): Promise<BearerToken>
{
let tokenResult: BearerToken;
let p = new Promise<BearerToken>(function (resolve, reject)
{
// my code ommited
});
return p;
}
....
}
The TypeScript does compile without an error so I can get by with this, but I'd like to find a solution. Does anyone know how to solve this? Having researched StackOverflow and Github I have tried the following:
npm install es6-promise --save, and import {Promise} from 'es6-promise' added to the top of the source file
This does cause the red squiggly to disappear but leads to the build error "Type Promise is not assignable to type Promise. Two different types with this name exist but they are unrelated."
Installing and referencing npm's ts-promise incurs the same "Two different types with this name exist" error.
typings install dt~es6-shim --save --global
This causes duplicate definitions, e.g. Duplicate identifier 'PropertyKey' in lib.es2015.core.d.ts
typings install dt~es6-promise --save --global
This causes error Duplicate identifier 'Promise' in lib.es2015.iterable.d.ts
typings install bluebird --source npm --save
This fails with the compile time error "Type Promise is not assignable to type 'Bluebird'" because HttpClient returns Javascript Promises, not Bluebird promises.
npm install es6-shim --save and npm install #types/es6-shim --save-dev
This causes duplicate definitions, e.g. Duplicate identifier 'PropertyKey' in lib.es2015.core.d.ts
npm install es6-promise --save and npm install #types/es6-promise --save-dev
causes error Duplicate identifier 'Promise' in lib.es2015.iterable.d.ts
in tsconfig.json, modifying "lib": ["es2015", "dom"] to "lib": ["es2015", "es2015.promise", "dom"] did not fix the problem.
tscconfig.json as follows :
{
"compileOnSave": false,
"compilerOptions": {
"rootDir": "src",
"outDir": "dist",
"sourceMap": true,
"target": "es5",
"module": "amd",
"declaration": false,
"noImplicitAny": false,
"removeComments": true,
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"moduleResolution": "node",
"lib": ["es2015", "dom"],
"baseUrl": "./",
"paths": {
"src/*": ["src/*"]
}
},
"filesGlob": [
"./src/**/*.ts",
"./test/**/*.ts",
"./typings/index.d.ts",
"./custom_typings/**/*.d.ts",
"./jspm_packages/**/*.d.ts"
],
"exclude": [
"node_modules",
"jspm_packages",
"dist",
"build",
"test"
],
"atom": {
"rewriteTsconfig": false
}
}
Perhaps I am not referencing the required library correctly so if someone can point out the error I'd appreciate it.

Answer 1

Try this config for libs
"lib": ["es2015", "dom", "es6"]
If other types are missing (Request, Response, BufferSource URLSearchParams,...) please send your typings.json file.