export interface FilterRule {
    name: string;
    matchCommand: RegExp;
    imageOnlyFallback?: string;
    pipeline: FilterPipeline;
}
export interface FilterPipeline {
    stripAnsi?: boolean;
    replace?: Array<{
        pattern: RegExp;
        replacement: string;
    }>;
    matchOutput?: Array<{
        pattern: RegExp;
        message: string;
        unless?: RegExp;
    }>;
    stripLinesMatching?: RegExp[];
    keepLinesMatching?: RegExp[];
    truncateLinesAt?: number;
    headLines?: number;
    tailLines?: number;
    maxLines?: number;
    onEmpty?: string;
}
export type FilterResult = {
    matched: true;
    ruleName: string;
    output: string;
    bytesBefore: number;
    bytesAfter: number;
} | {
    matched: false;
    output: string;
    bytesBefore: number;
    bytesAfter: number;
};
export declare const OMITTED_LINES_MARKER: (count: number) => string;
export declare const TRUNCATED_LINES_MARKER: (count: number) => string;
export declare class FilterRegistry {
    private readonly rules;
    constructor(rules: FilterRule[]);
    find(command: string): FilterRule | undefined;
}
export declare class FilterEngine {
    private readonly registry;
    constructor(registry: FilterRegistry);
    process(command: string, content: string): FilterResult;
}
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