/**
 * A FIGURE AND WHAT IT IS COUNTED IN, joined — and the ONE unit that is not a
 * word.
 *
 * A unit follows its number across a space ("8 pcs", "40 kg"): the number is the
 * quantity, the unit names it, and they are two tokens. A PERCENT SIGN is not
 * that kind of unit — it belongs to the figure the way a minus sign does, and
 * every reading the kit already draws binds it (`Metric`'s percentage, a
 * meter's, a level cell's "68%"). Joined by the word rule, a register printed
 * "10 %" one column from a meter printing "10%": one value, two renderings.
 *
 * Neither pack states it, and that is the finding rather than a gap: `vi` and
 * `en` both bind the sign, so the rule is the kit's own typography and not a
 * translation — a locale that spaced it would spell the whole reading through
 * `Intl`'s `style: "percent"`, which is a different formatter and not a unit at
 * all.
 */
export declare const PERCENT = "%";
/** The figure with its unit after it — bound where the unit is the percent sign. */
export declare function withUnit(figure: string, unit: string | undefined): string;