/**
 * Pairwise filtering using bit masks.
 *
 * This filtering method is based on two 16-bit values:
 * - The interaction groups (the 16 left-most bits of `self.0`).
 * - The interaction mask (the 16 right-most bits of `self.0`).
 *
 * An interaction is allowed between two filters `a` and `b` two conditions
 * are met simultaneously:
 * - The interaction groups of `a` has at least one bit set to `1` in common with the interaction mask of `b`.
 * - The interaction groups of `b` has at least one bit set to `1` in common with the interaction mask of `a`.
 * In other words, interactions are allowed between two filter iff. the following condition is met:
 *
 * ```
 * ((a >> 16) & b) != 0 && ((b >> 16) & a) != 0
 * ```
 */
export declare type InteractionGroups = number;