/**
 * Maps a nestjs-crud SCondition operator token to a Prisma filter descriptor.
 *
 * `$inL`/`$notinL` map to native Prisma `in`/`notIn` — NO `mode: 'insensitive'`
 * and NO OR/AND expansion. Per spike Pattern 5 + Constraint C5: `mode` is a
 * per-string-operator modifier (startsWith, endsWith, contains, equals) and is
 * NOT valid on array filters.
 */
export interface PrismaOp {
    key: string;
    mode?: 'insensitive';
    negate?: boolean;
    expand?: 'between';
}
export declare function mapOperator(sOp: string): PrismaOp | null;