import { PDG } from './pdg.js';
import { Sigma } from './sigma.js';
import { Corpus } from './corpus.js';
export declare const BANAL_PERCENTILE = 0.5;
export interface FeatureContribution {
    feature: string;
    pNat: number;
    weight: number;
    count: number;
    mass: number;
    banal: boolean;
}
export declare class UnitReport {
    label: string;
    totalMass: number;
    uniqueMass: number;
    banalMass: number;
    contributions: FeatureContribution[];
    constructor(label: string);
    get uniquenessRatio(): number;
    topSignature(n?: number): FeatureContribution[];
}
/**
 * Compute the surprisal map of one PDG against a corpus.
 * Matches rcf_core.measure.measure_unit in Python.
 */
export declare function measureUnit(pdg: PDG, corpus: Corpus, label?: string, options?: {
    iterations?: number;
    banalPercentile?: number;
}): UnitReport;
/**
 * Measure every function unit in a source string.
 * Matches rcf_core.measure.measure_source in Python.
 */
export declare function measureSource(source: string, corpus: Corpus, sigma?: Sigma): UnitReport[];
/**
 * Measure the PROTECTED function units of a project.
 * Matches rcf_core.measure.measure_project in Python.
 */
export declare function measureProject(root: string, corpus: Corpus, sigma?: Sigma): UnitReport[];
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