/**
 * The signature of modifier functions is as follows
 * Their structure is always the same: recursively follow the dot notation while creating
 * the nested documents if needed, then apply the "last step modifier"
 */
export declare const LastStepModifierFunctions: {
    /**
     * Set a field to a new value
     */
    $set: (obj: any, field: any, value: any) => void;
    /**
     * Unset a field
     */
    $unset: (obj: any, field: any, value: any) => void;
    /**
     * Push an element to the end of an array field
     * Optional modifier $each instead of value to push several values
     * Optional modifier $slice to slice the resulting array, see https://docs.mongodb.org/manual/reference/operator/update/slice/
     * Différeence with MongoDB: if $slice is specified and not $each, we act as if value is an empty array
     */
    $push: (obj: any, field: any, value: any) => void;
    /**
     * Add an element to an array field only if it is not already in it
     * No modification if the element is already in the array
     * Note that it doesn't check whether the original array contains duplicates
     */
    $addToSet: (obj: any, field: any, value: any) => void;
    /**
     * Remove the first or last element of an array
     */
    $pop: (obj: any, field: any, value: any) => void;
    /**
     * Removes all instances of a value from an existing array
     */
    $pull: (obj: any, field: any, value: any) => void;
    /**
     * Increment a numeric field's value
     */
    $inc: (obj: Record<string, any>, field: string, value: number) => void;
    /**
     * Updates the value of the field, only if specified field is greater than the current value of the field
     */
    $max: (obj: any, field: any, value: any) => void;
    /**
     * Updates the value of the field, only if specified field is smaller than the current value of the field
     */
    $min: (obj: any, field: any, value: any) => void;
};