build: output es2017 code

[simondel]

No description provided.

[nicojs]

I think this PR changes too many tsconfig.json files. Should only be the once governing Stryker IMHO.

[bartekleon]

I don't know if it is good that you are removing Libs. I don't think ES2017 contains DOM lib etc. It should all be added as it was in my opinion.
I guess it can be compared to C++. You can use C++11, C++14, C++17 versions, but libs are still required so you can't just omit iostream for example only coz you switched C++ version from 11 to 17.

[nicojs]

@kmdrGroch es2017 indeed doesn't include DOM, but it shouldn't as Stryker runs in NodeJS, right?

[simondel]

I have removed the other tsconfig changes.

[bartekleon]

@nicojs, @simondel change target to "target": "es2017" and just add to libs es2017. Do not remove older libs like es2015, etc

[bartekleon]

and @nicojs all these libs are nothing more as the sets of types / interfaces. It is the same as you are using @types/mocha for example. It is like using @types/ecmascript5, @types/DOM.

[nicojs]

@kmdrGroch

change target to "target": "es2017" and just add to libs es2017. Do not remove older libs like es2015, etc

I'm pretty sure that es2017 includes 2015 etc. See https://github.com/Microsoft/TypeScript/blob/master/lib/lib.es2017.d.ts

and @nicojs all these libs are nothing more as the sets of types / interfaces. It is the same as you are using @types/mocha for example. It is like using @types/ecmascript5, @types/DOM.

I know. However, I don't want those types. For example, I don't want to accidentally add document.getElementById somewhere in our code.

[bartekleon]

yea, you are right. They have reflections to previous versions, my fault.

And I see from travis logs, there is problems with timeout :/ maybe try rerunning tests / increase timeout time

[nicojs]

Yeah, we'll have 16th and 17th this month dedicated to Stryker development. We'll release Stryker 2.0 then.