import type { UnitScale } from "./format_money";
/** What an entry typed into a field in a unit reads as: its figure in the field's unit, nothing typed, or no figure. */
export type QuantityEntry = {
    read: true;
    value: number | null;
} | {
    read: false;
};
/**
 * AN ENTRY TYPED INTO A FIELD IN A UNIT, in that unit: a figure alone is the field's own, and a figure followed by a
 * word one of `entries` is named by is converted from it — "12,5 t" into a kg field is 12 500. A word naming none,
 * or no figure, reads as nothing the field holds.
 */
export declare function readQuantityEntry(text: string, tag: string, entries: UnitScale["entries"]): QuantityEntry;