Make the Omit type compatible with TS 2.9+ (#1017)

elastic · Jul 16, 2018 · b8064e0 · b8064e0
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,6 +1,7 @@
 ## [`master`](https://github.com/elastic/eui/tree/master)
 
 - Added typings for `EuiEmptyPrompt`, `EuiCode`, `EuiCodeBlock`, and `EuiCallOut` ([#1010](https://github.com/elastic/eui/pull/1010))
+- Make utility type `Omit` compatible with new `keyof` behaviour introduced in TypeScript 2.9 ([#1017](https://github.com/elastic/eui/pull/1017))
 
 **Bug fixes**
 

diff --git a/src/components/common.d.ts b/src/components/common.d.ts
@@ -15,8 +15,5 @@ declare module '@elastic/eui' {
 
   // utility types:
 
-  type Diff<T extends string, U extends string> = ({ [P in T]: P } &
-    { [P in U]: never } & { [x: string]: never })[T];
-
-  type Omit<T, K extends keyof T> = Pick<T, Diff<keyof T, K>>;
+  type Omit<T, K> = Pick<T, Exclude<keyof T, K>>;
 }