chore(drag-drop): Fix compilation in TS3.6. (#17217)

mprobst · mmalerba · commit 3e37128dab87 · 2019-10-08T11:05:10.000-07:00
This version compiles in 3.5 and 3.6. (cherry picked from commit 361d1cf)
diff --git a/src/cdk/drag-drop/drag-styling.ts b/src/cdk/drag-drop/drag-styling.ts
@@ -30,7 +30,7 @@ export function extendStyles(
     source: Partial<DragCSSStyleDeclaration>) {
   for (let key in source) {
     if (source.hasOwnProperty(key)) {
-      dest[key as keyof CSSStyleDeclaration] = source[key as keyof CSSStyleDeclaration];
+      dest[key] = source[key]!;
     }
   }
 

Original file line number	Diff line number	Diff line change
`@@ -30,7 +30,7 @@ export function extendStyles(`
`30`	`30`	`source: Partial<DragCSSStyleDeclaration>) {`
`31`	`31`	`for (let key in source) {`
`32`	`32`	`if (source.hasOwnProperty(key)) {`
`33`		`- dest[key as keyof CSSStyleDeclaration] = source[key as keyof CSSStyleDeclaration];`
	`33`	`+ dest[key] = source[key]!;`
`34`	`34`	`}`
`35`	`35`	`}`
`36`	`36`