excalidraw/src/keys.ts

export const isDarwin = /Mac|iPod|iPhone|iPad/.test(window.navigator.platform);

export const KEYS =
  {
    ARROW_LEFT: "ArrowLeft",
    ARROW_RIGHT: "ArrowRight",
    ARROW_DOWN: "ArrowDown",
    ARROW_UP: "ArrowUp",
    ENTER: "Enter",
    ESCAPE: "Escape",
    DELETE: "Delete",
    BACKSPACE: "Backspace",
    CTRL_OR_CMD: isDarwin ? "metaKey" : "ctrlKey",
    TAB: "Tab",
    SPACE: " ",
    QUESTION_MARK: "?",
    F_KEY_CODE: 70,
  } as const;

export type Key = keyof typeof KEYS;

export function isArrowKey(keyCode: string) {
  return (
    keyCode === KEYS.ARROW_LEFT ||
    keyCode === KEYS.ARROW_RIGHT ||
    keyCode === KEYS.ARROW_DOWN ||
    keyCode === KEYS.ARROW_UP
  );
}