export interface Modifier<V> {
    id: string;
    source?: string;
    apply: (value: V, context: PipelineContext<V>) => V;
}
export interface PipelineContext<V> {
    base: V;
    index: number;
    trace: readonly TraceStep<V>[];
}
export interface TraceStep<V> {
    id: string;
    source?: string;
    index: number;
    before: V;
    after: V;
    changed: boolean;
}
export interface PipelineResult<V> {
    base: V;
    value: V;
    trace: readonly TraceStep<V>[];
}
export declare function runPipeline<V>(base: V, modifiers: readonly Modifier<V>[], equals?: (a: V, b: V) => boolean): PipelineResult<V>;
export interface ModifierPipeline<V> {
    add(modifier: Modifier<V>): void;
    insertAt(index: number, modifier: Modifier<V>): void;
    remove(id: string): boolean;
    clear(): void;
    list(): readonly Modifier<V>[];
    run(base: V): PipelineResult<V>;
}
export declare function createModifierPipeline<V>(initial?: readonly Modifier<V>[], equals?: (a: V, b: V) => boolean): ModifierPipeline<V>;