import { FunctionCov, ProcessCov, ScriptCov } from "./types";
/**
 * Merges a list of process coverages.
 *
 * The result is normalized.
 * The input values may be mutated, it is not safe to use them after passing
 * them to this function.
 * The computation is synchronous.
 *
 * @param processCovs Process coverages to merge.
 * @return Merged process coverage.
 */
export declare function mergeProcessCovs(processCovs: ReadonlyArray<ProcessCov>): ProcessCov;
/**
 * Merges a list of matching script coverages.
 *
 * Scripts are matching if they have the same `url`.
 * The result is normalized.
 * The input values may be mutated, it is not safe to use them after passing
 * them to this function.
 * The computation is synchronous.
 *
 * @param scriptCovs Process coverages to merge.
 * @return Merged script coverage, or `undefined` if the input list was empty.
 */
export declare function mergeScriptCovs(scriptCovs: ReadonlyArray<ScriptCov>): ScriptCov | undefined;
/**
 * Merges a list of matching function coverages.
 *
 * Functions are matching if their root ranges have the same span.
 * The result is normalized.
 * The input values may be mutated, it is not safe to use them after passing
 * them to this function.
 * The computation is synchronous.
 *
 * @param funcCovs Function coverages to merge.
 * @return Merged function coverage, or `undefined` if the input list was empty.
 */
export declare function mergeFunctionCovs(funcCovs: ReadonlyArray<FunctionCov>): FunctionCov | undefined;