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ahejlsberg · ahejlsberg · commit 35addce79ede · 2017-08-19T09:46:02.000+02:00
diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
@@ -1017,6 +1017,7 @@ namespace ts {
                         }
                         break;
                     case SyntaxKind.ExpressionWithTypeArguments:
+                        // The type parameters of a class are not in scope in the base class expression.
                         if (lastLocation === (<ExpressionWithTypeArguments>location).expression && (<HeritageClause>location.parent).token === SyntaxKind.ExtendsKeyword) {
                             const container = location.parent.parent;
                             if (isClassLike(container) && (result = lookup(getSymbolOfNode(container).members, name, meaning & SymbolFlags.Type))) {

Original file line number	Diff line number	Diff line change
`@@ -1017,6 +1017,7 @@ namespace ts {`
`1017`	`1017`	`}`
`1018`	`1018`	`break;`
`1019`	`1019`	`case SyntaxKind.ExpressionWithTypeArguments:`
	`1020`	`+ // The type parameters of a class are not in scope in the base class expression.`
`1020`	`1021`	`if (lastLocation === (<ExpressionWithTypeArguments>location).expression && (<HeritageClause>location.parent).token === SyntaxKind.ExtendsKeyword) {`
`1021`	`1022`	`const container = location.parent.parent;`
`1022`	`1023`	`if (isClassLike(container) && (result = lookup(getSymbolOfNode(container).members, name, meaning & SymbolFlags.Type))) {`