import { LogNum } from "./logNum.js";
/** A map from items to log counts. */
export declare class LogCounter<T extends PropertyKey> {
    private readonly counts;
    constructor(counts: ReadonlyMap<T, LogNum>, totalCache?: LogNum);
    static from(data: string): LogCounter<string>;
    static from<T extends PropertyKey>(data: Iterable<T>): LogCounter<T>;
    static from<T extends PropertyKey, U>(data: Iterable<U>, map: (item: U) => T): LogCounter<T>;
    /** The number of distinct items. */
    get distinct(): LogNum;
    private totalCache;
    /** The total number of all items. */
    get total(): LogNum;
    /** The log count of the given item. */
    get(item: T): LogNum;
    /** Returns an iterable of [item, log count] pairs. */
    entries(): IterableIterator<[T, LogNum]>;
    /** Returns a list of items that satisfy the given predicate. */
    filterKeys(fn: (item: T, count: LogNum) => boolean): T[];
    /** Returns an iterable of [item, log probability] pairs. */
    frequencies(): IterableIterator<[T, LogNum]>;
}
//# sourceMappingURL=logCounter.d.ts.map