Function checkGrammarIndexSignature

test/fixtures/snapshot/typescript.js:88160–88163

(node)

            return false;
        }
        function checkGrammarIndexSignature(node) {
            // Prevent cascading error by short-circuit
            return checkGrammarDecoratorsAndModifiers(node) || checkGrammarIndexSignatureParameters(node);
        }
        function checkGrammarForAtLeastOneTypeArgument(node, typeArguments) {
            if (typeArguments && typeArguments.length === 0) {
                var sourceFile = ts.getSourceFileOfNode(node);