Typescript: bug? tsc is looking in node_modules dir even though it's excluded + "cannot find name Promise"

[ORESoftware]

TypeScript Version: 2.1.4

Code

Please see my code and config; the config is clear below and all I did to generate the errors was run

$ tsc # at the command line

Expected behavior:

Expect the tsc command to work given the tsconfig.json file

Actual behavior:

I get these weird errors:

oleg@xps:~/WebstormProjects/oresoftware/observable-persistent-queue$ tsc
node_modules/rxjs/Observable.d.ts(68,60): error TS2304: Cannot find name 'Promise'.
node_modules/rxjs/Observable.d.ts(68,70): error TS2304: Cannot find name 'Promise'.
node_modules/rxjs/observable/PromiseObservable.d.ts(40,31): error TS2304: Cannot find name 'Promise'.
node_modules/rxjs/observable/PromiseObservable.d.ts(41,26): error TS2304: Cannot find name 'Promise'.
node_modules/rxjs/operator/toPromise.d.ts(2,60): error TS2304: Cannot find name 'Promise'.
node_modules/rxjs/operator/toPromise.d.ts(3,79): error TS2304: Cannot find name 'Promise'.
node_modules/rxjs/operator/toPromise.d.ts(3,89): error TS2304: Cannot find name 'Promise'.

Any idea why that's happening or what it's about? Seems like a bug or multiple bugs? As you can see node_modules is excluded by the config, so not sure why tsc is looking in that dir; even then, not sure why the Promise error is coming about.

[aluanhaddad]

[ORESoftware]

Looking at those I don't think any of them have to do with this issue? But maybe I am wrong.

[ORESoftware]

the last one in the first image might be a lead

[aluanhaddad]

Sorry I did not mean to be rude but at least half of them could be relevant. Please see this as well https://www.typescriptlang.org/docs/handbook/tsconfig-json.html

[ORESoftware]

no problem, I went through some and they didn't seem to be the same

[aluanhaddad]

Looking at what you posted more closely, you are missing "lib": ["es2015"] which you need in order to use Promises when targeting es5, unless you use third party typings promise typings.

[aluanhaddad]

@ORESoftware Did setting lib help?

[ORESoftware]

ah let me try it, thanks!

[ORESoftware]

that did do something, but now I get this (all I changed was adding "lib":["es2015"] to my tsconfig.json file.)

oleg@xps:~/WebstormProjects/oresoftware/observable-persistent-queue$ ./build.sh 
node_modules/rxjs/observable/FromEventObservable.d.ts(11,39): error TS2304: Cannot find name 'EventTarget'.
node_modules/rxjs/observable/FromEventObservable.d.ts(11,104): error TS2304: Cannot find name 'NodeList'.
node_modules/rxjs/observable/FromEventObservable.d.ts(11,115): error TS2304: Cannot find name 'HTMLCollection'.
node_modules/rxjs/observable/dom/AjaxObservable.d.ts(16,23): error TS2304: Cannot find name 'XMLHttpRequest'.
node_modules/rxjs/observable/dom/AjaxObservable.d.ts(75,59): error TS2304: Cannot find name 'Event'.
node_modules/rxjs/observable/dom/AjaxObservable.d.ts(80,13): error TS2304: Cannot find name 'Event'.
node_modules/rxjs/observable/dom/AjaxObservable.d.ts(95,20): error TS2304: Cannot find name 'Event'.
node_modules/rxjs/observable/dom/AjaxObservable.d.ts(96,10): error TS2304: Cannot find name 'XMLHttpRequest'.
node_modules/rxjs/observable/dom/AjaxObservable.d.ts(106,32): error TS2304: Cannot find name 'Event'.
node_modules/rxjs/observable/dom/AjaxObservable.d.ts(106,44): error TS2304: Cannot find name 'XMLHttpRequest'.
node_modules/rxjs/observable/dom/AjaxObservable.d.ts(117,10): error TS2304: Cannot find name 'XMLHttpRequest'.
node_modules/rxjs/observable/dom/AjaxObservable.d.ts(122,39): error TS2304: Cannot find name 'XMLHttpRequest'.
node_modules/rxjs/observable/dom/AjaxObservable.d.ts(130,22): error TS2304: Cannot find name 'XMLHttpRequest'.
node_modules/rxjs/observable/dom/WebSocketSubject.d.ts(10,29): error TS2304: Cannot find name 'MessageEvent'.
node_modules/rxjs/observable/dom/WebSocketSubject.d.ts(11,33): error TS2304: Cannot find name 'Event'.
node_modules/rxjs/observable/dom/WebSocketSubject.d.ts(12,34): error TS2304: Cannot find name 'CloseEvent'.
node_modules/rxjs/observable/dom/WebSocketSubject.d.ts(15,63): error TS2304: Cannot find name 'WebSocket'.
node_modules/rxjs/observable/dom/WebSocketSubject.d.ts(26,13): error TS2304: Cannot find name 'WebSocket'.
node_modules/rxjs/observable/dom/WebSocketSubject.d.ts(27,32): error TS2304: Cannot find name 'Event'.
node_modules/rxjs/observable/dom/WebSocketSubject.d.ts(28,33): error TS2304: Cannot find name 'CloseEvent'.
node_modules/rxjs/observable/dom/WebSocketSubject.d.ts(31,63): error TS2304: Cannot find name 'WebSocket'.
node_modules/rxjs/observable/dom/WebSocketSubject.d.ts(34,23): error TS2304: Cannot find name 'MessageEvent'.

[aluanhaddad]

"lib":["es2015", "dom"] :)
It is a mix and match smorgasbord

[ORESoftware]

huh, ok :) but I wonder why tsc is looking to resolve this, I would think that it would ignore this stuff because it's in node_modules...?

[aluanhaddad]

Because, you need to reference types from within node_modules (so you can get access to their stronly typed APIs and take advantage of TypeScript's tooling), and these in turn reference other types, which reference other types...

[ORESoftware]

yeah, it sort of makes sense. my code is calling RxJS which is in node_modules and it needs some type info from there I guess, even though no source files inside node_modules will be transpiled...

[ORESoftware]

thanks for your help, it seems to have solved my problem will close!