// This order mirrors GhosttyKey in ghostty/vt/key/event.h. The values are// intentionally derived from the official W3C-aligned enum instead of// maintaining a second keyboard protocol.const ghosttyKeyboardCodes = [  "Unidentified",  "Backquote",  "Backslash",  "BracketLeft",  "BracketRight",  "Comma",  "Digit0",  "Digit1",  "Digit2",  "Digit3",  "Digit4",  "Digit5",  "Digit6",  "Digit7",  "Digit8",  "Digit9",  "Equal",  "IntlBackslash",  "IntlRo",  "IntlYen",  "KeyA",  "KeyB",  "KeyC",  "KeyD",  "KeyE",  "KeyF",  "KeyG",  "KeyH",  "KeyI",  "KeyJ",  "KeyK",  "KeyL",  "KeyM",  "KeyN",  "KeyO",  "KeyP",  "KeyQ",  "KeyR",  "KeyS",  "KeyT",  "KeyU",  "KeyV",  "KeyW",  "KeyX",  "KeyY",  "KeyZ",  "Minus",  "Period",  "Quote",  "Semicolon",  "Slash",  "AltLeft",  "AltRight",  "Backspace",  "CapsLock",  "ContextMenu",  "ControlLeft",  "ControlRight",  "Enter",  "MetaLeft",  "MetaRight",  "ShiftLeft",  "ShiftRight",  "Space",  "Tab",  "Convert",  "KanaMode",  "NonConvert",  "Delete",  "End",  "Help",  "Home",  "Insert",  "PageDown",  "PageUp",  "ArrowDown",  "ArrowLeft",  "ArrowRight",  "ArrowUp",  "NumLock",  "Numpad0",  "Numpad1",  "Numpad2",  "Numpad3",  "Numpad4",  "Numpad5",  "Numpad6",  "Numpad7",  "Numpad8",  "Numpad9",  "NumpadAdd",  "NumpadBackspace",  "NumpadClear",  "NumpadClearEntry",  "NumpadComma",  "NumpadDecimal",  "NumpadDivide",  "NumpadEnter",  "NumpadEqual",  "NumpadMemoryAdd",  "NumpadMemoryClear",  "NumpadMemoryRecall",  "NumpadMemoryStore",  "NumpadMemorySubtract",  "NumpadMultiply",  "NumpadParenLeft",  "NumpadParenRight",  "NumpadSubtract",  "NumpadSeparator",  "NumpadArrowUp",  "NumpadArrowDown",  "NumpadArrowRight",  "NumpadArrowLeft",  "NumpadBegin",  "NumpadHome",  "NumpadEnd",  "NumpadInsert",  "NumpadDelete",  "NumpadPageUp",  "NumpadPageDown",  "Escape",  "F1",  "F2",  "F3",  "F4",  "F5",  "F6",  "F7",  "F8",  "F9",  "F10",  "F11",  "F12",  "F13",  "F14",  "F15",  "F16",  "F17",  "F18",  "F19",  "F20",  "F21",  "F22",  "F23",  "F24",  "F25",  "Fn",  "FnLock",  "PrintScreen",  "ScrollLock",  "Pause",  "BrowserBack",  "BrowserFavorites",  "BrowserForward",  "BrowserHome",  "BrowserRefresh",  "BrowserSearch",  "BrowserStop",  "Eject",  "LaunchApp1",  "LaunchApp2",  "LaunchMail",  "MediaPlayPause",  "MediaSelect",  "MediaStop",  "MediaTrackNext",  "MediaTrackPrevious",  "Power",  "Sleep",  "AudioVolumeDown",  "AudioVolumeMute",  "AudioVolumeUp",  "WakeUp",  "Copy",  "Cut",  "Paste",] as const; const codeToGhosttyKey = new Map<string, number>(  ghosttyKeyboardCodes.map((code, index) => [code, index]),); export function ghosttyKeyForCode(code: string): number {  return codeToGhosttyKey.get(code) ?? 0;} export interface GhosttyKeyboardLayoutMap {  get(code: string): string | undefined;} const shiftedToUnshiftedCharacter = new Map<string, string>([  ["!", "1"],  ["@", "2"],  ["#", "3"],  ["$", "4"],  ["%", "5"],  ["^", "6"],  ["&", "7"],  ["*", "8"],  ["(", "9"],  [")", "0"],  ["~", "`"],  ["_", "-"],  ["+", "="],  ["{", "["],  ["}", "]"],  ["|", "\\"],  [":", ";"],  ['"', "'"],  ["<", ","],  [">", "."],  ["?", "/"],]); let keyboardLayoutMapPromise: Promise<GhosttyKeyboardLayoutMap | undefined> | undefined; export function loadGhosttyKeyboardLayoutMap(): Promise<GhosttyKeyboardLayoutMap | undefined> {  if (keyboardLayoutMapPromise) return keyboardLayoutMapPromise;  const browserNavigator = globalThis.navigator as    | (Navigator & {        readonly keyboard?: {          getLayoutMap(): Promise<GhosttyKeyboardLayoutMap>;        };      })    | undefined;  const keyboard = browserNavigator?.keyboard;  const promise = keyboard?.getLayoutMap().catch(() => undefined) ?? Promise.resolve(undefined);  keyboardLayoutMapPromise = promise;  return promise;} // Browsers do not expose consumed modifiers; treat Shift as consumed for// unchorded character input.export function ghosttyConsumedMods(  event: Pick<KeyboardEvent, "altKey" | "ctrlKey" | "key" | "metaKey" | "shiftKey">,): number {  if (!event.shiftKey || event.ctrlKey || event.altKey || event.metaKey) return 0;  return [...event.key].length === 1 ? 1 : 0;} export function ghosttyUnshiftedCodepoint(  event: Pick<KeyboardEvent, "code" | "key" | "shiftKey">,  layoutMap?: GhosttyKeyboardLayoutMap,): number {  if ([...event.key].length !== 1) return 0;  const layoutCharacter = layoutMap?.get(event.code);  if (layoutCharacter && [...layoutCharacter].length === 1) {    return layoutCharacter.codePointAt(0) ?? 0;  }  if (/^[A-Z]$/u.test(event.key)) return event.key.charCodeAt(0) + 32;  if (event.shiftKey) {    const unshiftedCharacter = shiftedToUnshiftedCharacter.get(event.key);    if (unshiftedCharacter) return unshiftedCharacter.codePointAt(0) ?? 0;    const lowercase = event.key.toLowerCase();    if (lowercase !== event.key && [...lowercase].length === 1) {      return lowercase.codePointAt(0) ?? 0;    }    // Without layout data the unshifted form of a shifted key is unknowable;    // reporting the shifted character as unshifted corrupts Kitty alternate keys.    return 0;  }  return event.key.codePointAt(0) ?? 0;}