Do not error when spread generic type

Kanchalai Tanglertsampan · Kanchalai Tanglertsampan · commit bb1125a2b6fb · 2017-05-08T13:31:44.000-07:00
diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
@@ -13285,11 +13285,7 @@ namespace ts {
                         attributesArray = [];
                         attributesTable = createMap<Symbol>();
                     }
-                    const exprType = checkExpression(attributeDecl.expression);
-                    if (!isValidSpreadType(exprType)) {
-                        error(attributeDecl, Diagnostics.Spread_types_may_only_be_created_from_object_types);
-                        hasSpreadAnyType = true;
-                    }
+                    const exprType = getApparentType(checkExpression(attributeDecl.expression))
                     if (isTypeAny(exprType)) {
                         hasSpreadAnyType = true;
                     }

Original file line number	Diff line number	Diff line change
`@@ -13285,11 +13285,7 @@ namespace ts {`
`13285`	`13285`	`attributesArray = [];`
`13286`	`13286`	`attributesTable = createMap<Symbol>();`
`13287`	`13287`	`}`
`13288`		`- const exprType = checkExpression(attributeDecl.expression);`
`13289`		`- if (!isValidSpreadType(exprType)) {`
`13290`		`- error(attributeDecl, Diagnostics.Spread_types_may_only_be_created_from_object_types);`
`13291`		`- hasSpreadAnyType = true;`
`13292`		`- }`
	`13288`	`+ const exprType = getApparentType(checkExpression(attributeDecl.expression))`
`13293`	`13289`	`if (isTypeAny(exprType)) {`
`13294`	`13290`	`hasSpreadAnyType = true;`
`13295`	`13291`	`}`