Error when running karma start

[rjbergerud]

After running npm install in rxjs/chat, I run karma start and get the following error:

ERROR in /home/rydertana/Documents/Practice/manuscript-35/code/rxjs/chat/node_modules/@angular/core/testing/test_component_builder.d.ts
(74,57): error TS2304: Cannot find name 'Promise'.

ERROR in /home/rydertana/Documents/Practice/manuscript-35/code/rxjs/chat/node_modules/@angular/core/testing/component_fixture.d.ts
(77,19): error TS2304: Cannot find name 'Promise'.

ERROR in /home/rydertana/Documents/Practice/manuscript-35/code/rxjs/chat/node_modules/@angular/http/src/url_search_params.d.ts
(46,16): error TS2304: Cannot find name 'Map'.

ERROR in /home/rydertana/Documents/Practice/manuscript-35/code/rxjs/chat/node_modules/@angular/http/src/headers.d.ts
(45,59): error TS2304: Cannot find name 'Map'.

ERROR in /home/rydertana/Documents/Practice/manuscript-35/code/rxjs/chat/node_modules/@angular/router/src/router.d.ts
(188,43): error TS2304: Cannot find name 'Promise'.

(...)

The output goes on quite a bit, and the tests run fine. Since the tests run fine, is there a way I can at least suppress all of these errors?