Function isConstraintPosition

test/fixtures/snapshot/typescript.js:71486–71496

(type, node)

            }
        }
        function isConstraintPosition(type, node) {
            var parent = node.parent;
            // In an element access obj[x], we consider obj to be in a constraint position, except when obj is of
            // a generic type without a nullable constraint and x is a generic type. This is because when both obj
            // and x are of generic types T and K, we want the resulting type to be T[K].
            return parent.kind === 206 /* SyntaxKind.PropertyAccessExpression */ ||
                parent.kind === 161 /* SyntaxKind.QualifiedName */ ||
                parent.kind === 208 /* SyntaxKind.CallExpression */ && parent.expression === node ||
                parent.kind === 207 /* SyntaxKind.ElementAccessExpression */ && parent.expression === node &&
                    !(someType(type, isGenericTypeWithoutNullableConstraint) && isGenericIndexType(getTypeOfExpression(parent.argumentExpression)));
        }
        function isGenericTypeWithUnionConstraint(type) {
            return !!(type.flags & 465829888 /* TypeFlags.Instantiable */ && getBaseConstraintOrType(type).flags & (98304 /* TypeFlags.Nullable */ | 1048576 /* TypeFlags.Union */));
        }