@eps1lon Thank you for submitting this PR!

🔔 @johnnyreilly @bbenezech @pzavolinsky @digiguru @ericanderson @tkrotoff @DovydasNavickas @onigoetz @theruther4d @guilhermehubner @ferdaber @jrakotoharisoa @pascaloliv @Hotell @franklixuefei @Jessidhia @pshrmn @saranshkataria @lukyth - please review this PR in the next few days. Be sure to explicitly select Approve or Request Changes in the GitHub UI so I know what's going on.

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@eps1lon if local tests pass just cc @sandersn so he can merge manually.

@eps1lon I haven't seen anything from you in a while and this PR currently has problems that prevent it from being merged. The PR will be closed tomorrow if there aren't new commits to fix the issues.

/cc @sandersn @Jessidhia

CI failure is unrelated. Could any human stop the bot please?

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Once you've pushed the fixes, the build will automatically re-run. Thanks!

I just published @types/react@16.8.12 to npm.

@eps1lon @Jessidhia is there any workaround for typing Set? I need to target es5 and as Set is es6 it does not compile. I know I can just do "lib": ["es6"] but that implies the es6 apis are available at runtime (ts would not complain if I use any es6 api like array find, but for ie11 I would have to add polyfills myself because lib it's just to tell typescript to not complain).

how to reproduce:

{
  "name": "test",
  "devDependencies": {
    "@types/react": "^16.9.1",
    "typescript": "^3.5.3"
  },
  "dependencies": {
    "react": "^16.9.0"
  }
}

{
  "compilerOptions": {
    "target": "es5",
    "strict": true,
    "jsx": "react",
    "outDir": "dist"
  },
  "include": ["./*.tsx"]
}

import * as React from "react";

const Foo = () => <div>bar</div>;

export { Foo };

then run npx tsc

my workaround in the end was adding this because Map and Set is partially supported by IE

"lib": ["es5", "dom", "es2015.promise", "es2015.collection"]

@cscleison Be aware that you always have to polyfill Map and Set when using react. IE11 does not support all methods properly so you still need add polyfills for those missing methods.