All files / src/lib/formatters border.ts

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/**
 * Box-drawing border characters for table rendering.
 *
 * Ported from OpenTUI's border.ts with the styles relevant to CLI output.
 * Each style defines 11 Unicode box-drawing characters for constructing
 * grid borders around table cells.
 *
 * @see https://github.com/anomalyco/opentui/blob/main/packages/core/src/lib/border.ts
 */
 
/** Complete set of box-drawing characters for a border style. */
export type BorderCharacters = {
  topLeft: string;
  topRight: string;
  bottomLeft: string;
  bottomRight: string;
  horizontal: string;
  vertical: string;
  topT: string;
  bottomT: string;
  leftT: string;
  rightT: string;
  cross: string;
};
 
/** Available border styles. */
export type BorderStyle = "single" | "rounded" | "heavy" | "double";
 
/** Border character lookup table indexed by style. */
export const BorderChars: Record<BorderStyle, BorderCharacters> = {
  single: {
    topLeft: "┌",
    topRight: "┐",
    bottomLeft: "└",
    bottomRight: "┘",
    horizontal: "─",
    vertical: "│",
    topT: "┬",
    bottomT: "┴",
    leftT: "├",
    rightT: "┤",
    cross: "┼",
  },
  rounded: {
    topLeft: "╭",
    topRight: "╮",
    bottomLeft: "╰",
    bottomRight: "╯",
    horizontal: "─",
    vertical: "│",
    topT: "┬",
    bottomT: "┴",
    leftT: "├",
    rightT: "┤",
    cross: "┼",
  },
  heavy: {
    topLeft: "┏",
    topRight: "┓",
    bottomLeft: "┗",
    bottomRight: "┛",
    horizontal: "━",
    vertical: "┃",
    topT: "┳",
    bottomT: "┻",
    leftT: "┣",
    rightT: "┫",
    cross: "╋",
  },
  double: {
    topLeft: "╔",
    topRight: "╗",
    bottomLeft: "╚",
    bottomRight: "╝",
    horizontal: "═",
    vertical: "║",
    topT: "╦",
    bottomT: "╩",
    leftT: "╠",
    rightT: "╣",
    cross: "╬",
  },
};