export declare const TAB_WIDTH = 8;
/**
 * How many terminal columns the character at `cp` occupies.
 *
 * Mirrors what glibc's `wcwidth` reports to GNU `wc -L`: 2 for an East Asian
 * wide or fullwidth character, 0 for a combining mark, a Hangul jamo medial
 * or final, or one of the zero-width format characters, and 1 for everything
 * else. A control character measures 0, which is how `wc` accounts for
 * `wcwidth`'s -1; callers handle tab, newline, carriage return and form feed
 * themselves, since those move the cursor rather than occupy a column.
 *
 * Divergence: an unassigned code point measures 1 here and 0 in glibc, which
 * would need the assigned-character set on top of the width table.
 *
 * Mirrors Python's `char_width`.
 */
export declare function charWidth(cp: number): number;
/**
 * Whether the character at `cp` separates words for `wc -w`.
 *
 * GNU splits on glibc's `iswspace`, which is Unicode White_Space minus
 * U+0085. JavaScript's `\s` is not that set: it also matches U+FEFF, so
 * `wc -w` over-counted words containing a byte-order mark. The generated
 * table is the pinned set.
 *
 * Mirrors Python's `is_space`.
 */
export declare function isSpace(cp: number): boolean;
/**
 * Move `column` past the character at `cp`, GNU `wc -L` style.
 *
 * A tab jumps to the next multiple of `TAB_WIDTH` — so a tab in column 0
 * lands on 8, which is why `printf 'a\tb' | wc -L` is 9 and not 3. Carriage
 * return and form feed return the cursor to column 0 rather than ending the
 * line, so `printf 'a\rb' | wc -L` is 1. Callers handle the newline, which
 * ends the line outright.
 *
 * Mirrors Python's `advance_column`.
 */
export declare function advanceColumn(column: number, cp: number): number;
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