Function parseUnionOrIntersectionType

test/fixtures/snapshot/typescript.js:34166–34180

(operator, parseConstituentType, createTypeNode)

            return undefined;
        }
        function parseUnionOrIntersectionType(operator, parseConstituentType, createTypeNode) {
            var pos = getNodePos();
            var isUnionType = operator === 51 /* SyntaxKind.BarToken */;
            var hasLeadingOperator = parseOptional(operator);
            var type = hasLeadingOperator && parseFunctionOrConstructorTypeToError(isUnionType)
                || parseConstituentType();
            if (token() === operator || hasLeadingOperator) {
                var types = [type];
                while (parseOptional(operator)) {
                    types.push(parseFunctionOrConstructorTypeToError(isUnionType) || parseConstituentType());
                }
                type = finishNode(createTypeNode(createNodeArray(types, pos)), pos);
            }
            return type;
        }
        function parseIntersectionTypeOrHigher() {
            return parseUnionOrIntersectionType(50 /* SyntaxKind.AmpersandToken */, parseTypeOperatorOrHigher, factory.createIntersectionTypeNode);
        }