import { SingleKeyRecord } from "./operators/update/_internal";
import { Any, AnyObject, CollationSpec, Criteria, Options, SortSpec, UpdateExpr } from "./types";
export type PipelineStage = {
    $addFields: AnyObject;
} | {
    $set: AnyObject;
} | {
    $project: AnyObject;
} | {
    $unset: string | string[];
} | {
    $replaceRoot: {
        newRoot: AnyObject;
    };
} | {
    $replaceWith: AnyObject;
};
export interface Modifier<T> {
    $addToSet?: UpdateExpr<T>;
    $bit?: UpdateExpr<T, SingleKeyRecord<"and" | "or" | "xor", number>>;
    $currentDate?: UpdateExpr<T, true | {
        $type: "date" | "timestamp";
    }>;
    $inc?: UpdateExpr<T, number>;
    $max?: UpdateExpr<T>;
    $min?: UpdateExpr<T>;
    $mul?: UpdateExpr<T, number>;
    $pop?: UpdateExpr<T, 1 | -1>;
    $pull?: UpdateExpr<T>;
    $pullAll?: UpdateExpr<T, Any[]>;
    $push?: UpdateExpr<T>;
    $rename?: UpdateExpr<T, string>;
    $set?: UpdateExpr<T>;
    $unset?: UpdateExpr<T, "">;
}
/**
 * Supported cloning modes.
 * - "deep": Performs a recursive deep clone of the object.
 * - "copy": Performs a shallow copy of the object. @default
 * - "none": No cloning. Uses the value as given. NOT RECOMMENDED.
 */
export type CloneMode = "deep" | "copy" | "none";
/** Extra configuration to customize the update operation */
export interface UpdateConfig {
    /** An array of filter documents that determine which array elements to modify for an update operation on an array field. */
    arrayFilters?: AnyObject[];
    /** Determines how to set values to fields. */
    cloneMode?: CloneMode;
    /** {@link updateOne} updates the first document in the sort order specified by this argument. */
    sort?: SortSpec;
    /** The collation to use for the operation. Merged into {@link Options.collation} when specified. */
    collation?: CollationSpec;
    /** A document with a list of variables. Merged into {@link Options.variables} when specified. */
    let?: AnyObject;
}
/**
 * Updates the given object with the expression.
 *
 * @param obj The object to update.
 * @param modifier The modifications to apply.
 * @param arrayFilters Filters to apply to nested items.
 * @param condition Conditions to validate before performing update.
 * @param options Update options to override defaults.
 * @returns {string[]} A list of modified field paths in the object.
 */
export declare function update<T extends AnyObject>(obj: T, modifier: Modifier<T>, arrayFilters?: AnyObject[], condition?: Criteria<T>, options?: {
    cloneMode?: CloneMode;
    queryOptions?: Partial<Options>;
}): string[];
/**
 * Updates all documents that match the specified filter for a collection.
 *
 * Supports both aggregation pipeline updates and standard update operators.
 * Documents in the collection may be replaced or modified.
 *
 * @param documents - The array of documents to update.
 * @param condition - The selection criteria for the update.
 * @param modifier - The modifications to apply.
 * @param updateConfig - Optional update config parameters.
 * @param options - Optional settings to control update behavior.
 */
export declare function updateMany<T extends AnyObject>(documents: T[], condition: Criteria<T>, modifier: Modifier<T> | PipelineStage[], updateConfig?: UpdateConfig, options?: Partial<Options>): {
    matchedCount: number;
    modifiedCount: number;
};
/**
 * Updates a single document within the collection based on the filter.
 *
 * Supports both aggregation pipeline updates and standard update operators.
 * Returns the number of documents matched and modified.
 * Objects in the array may be modified inplace or replaced entirely.
 *
 * @param documents - The array of documents to update.
 * @param condition - The selection criteria for the update.
 * @param modifier - The modifications to apply.
 * @param updateConfig - Optional update config parameters.
 * @param options - Optional settings to control update behavior.
 */
export declare function updateOne<T extends AnyObject>(documents: T[], condition: Criteria<T>, modifier: Modifier<T> | PipelineStage[], updateConfig?: UpdateConfig, options?: Partial<Options>): UpdateResult;
/** Result of update operation */
export interface UpdateResult {
    /** Count of objects that matched filter. */
    readonly matchedCount: number;
    /** Count of objects modified. */
    readonly modifiedCount: number;
    /** Array of modified fields of single object. Available only for {@link updateOne}. */
    readonly modifiedFields?: string[];
    /** Index of the modified object within the collection. Available only for {@link updateOne}. */
    readonly modifiedIndex?: number;
}