make never a non-array rest type

jack-williams · jack-williams · commit 90d868aeca60 · 2019-12-02T07:30:24.000Z
diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
@@ -25632,7 +25632,7 @@ namespace ts {
 
         function getNonArrayRestType(signature: Signature) {
             const restType = getEffectiveRestType(signature);
-            return restType && !isArrayType(restType) && !isTypeAny(restType) ? restType : undefined;
+            return restType && !isArrayType(restType) && !isTypeAny(restType) && (restType.flags & TypeFlags.Never) === 0 ? restType : undefined;
         }
 
         function getTypeOfFirstParameterOfSignature(signature: Signature) {

Original file line number	Diff line number	Diff line change
`@@ -25632,7 +25632,7 @@ namespace ts {`
`25632`	`25632`
`25633`	`25633`	`function getNonArrayRestType(signature: Signature) {`
`25634`	`25634`	`const restType = getEffectiveRestType(signature);`
`25635`		`- return restType && !isArrayType(restType) && !isTypeAny(restType) ? restType : undefined;`
	`25635`	`+ return restType && !isArrayType(restType) && !isTypeAny(restType) && (restType.flags & TypeFlags.Never) === 0 ? restType : undefined;`
`25636`	`25636`	`}`
`25637`	`25637`
`25638`	`25638`	`function getTypeOfFirstParameterOfSignature(signature: Signature) {`