Function parseAssertsTypePredicate

test/fixtures/snapshot/typescript.js:34264–34270

()

            }
        }
        function parseAssertsTypePredicate() {
            var pos = getNodePos();
            var assertsModifier = parseExpectedToken(128 /* SyntaxKind.AssertsKeyword */);
            var parameterName = token() === 108 /* SyntaxKind.ThisKeyword */ ? parseThisTypeNode() : parseIdentifier();
            var type = parseOptional(139 /* SyntaxKind.IsKeyword */) ? parseType() : undefined;
            return finishNode(factory.createTypePredicateNode(assertsModifier, parameterName, type), pos);
        }
        function parseType() {
            if (contextFlags & 40960 /* NodeFlags.TypeExcludesFlags */) {
                return doOutsideOfContext(40960 /* NodeFlags.TypeExcludesFlags */, parseType);