diff --git a/bin/keyboard_layouts.mjs b/bin/keyboard_layouts.mjs
deleted file mode 100644
index 4f8aa64eb..000000000
--- a/bin/keyboard_layouts.mjs
+++ /dev/null
@@ -1,38 +0,0 @@
-import fs from 'node:fs';
-import path from 'node:path';
-
-const DATA = {};
-
-for (let i = 2; i < process.argv.length; ++i) {
-  const filename = process.argv[i];
-  const key = path.basename(filename).split('.')[0];
-  const value = JSON.parse(fs.readFileSync(filename));
-  DATA[key] = value;
-}
-
-let keys = [];
-for (const map in DATA) {
-  keys = keys.concat(Object.keys(DATA[map]));
-}
-const KEYS = Array.from(new Set(keys)).sort();
-const ACC = Object.fromEntries(Object.keys(DATA).map((el, i) => [el, i]));
-const MAP = Object.fromEntries(KEYS.map(el => [el, []]));
-for (const key of KEYS) {
-  for (const map in ACC) {
-    MAP[key].push(DATA[map][key]);
-  }
-}
-
-// minify if all entries are of length 1
-for (const key in MAP) {
-  for (const c of MAP[key]) {
-    if (!c || c.length !== 1)
-      break;
-  }
-  MAP[key] = MAP[key].join('');
-}
-
-const FINAL = {acc: ACC, map: MAP};
-
-console.log(FINAL);
-console.log(JSON.stringify(FINAL).length);
diff --git a/fixtures/keyboard_layout.html b/fixtures/keyboard_layout.html
deleted file mode 100644
index 9ac068863..000000000
--- a/fixtures/keyboard_layout.html
+++ /dev/null
@@ -1,270 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-  <head>
-    <meta charset="UTF-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <meta http-equiv="X-UA-Compatible" content="ie=edge">
-    <title>Keyboard Layout</title>
-    <style>
-      body {
-        background: #f8f8f8;
-        font-size: 16px;
-      }
-      #keyinput {
-        border: 1px solid #aaa;
-        padding: 8px;
-        display: inline-block;
-        margin: 2px;
-        border-radius: 4px;
-        box-shadow: black 1px 1px 1px;
-        width: 1ch;
-      }
-      span {
-        border: 1px solid #aaa;
-        padding: 6px 8px;
-        display: inline-block;
-        margin: 2px;
-        border-radius: 4px;
-        box-shadow: black 1px 1px 1px;
-        min-width: 2ch;
-        text-align: center;
-        background: #fff;
-      }
-      #msg {
-        color: red;
-        display: none;
-        text-align: left;
-      }
-      #output {
-        border: 1px solid #666;
-        font-size: 12px;
-      }
-    </style>
-  </head>
-  <body>
-    <h1>Keyboard Base Layout</h1>
-    <p>
-      To record your keyboard base layout (unshifted), press all keys from left to right.<br>
-      While you can record most keys with this helper, it is enough to press all character producing keys.<br><br>
-
-      <span>Esc</span> deletes last key except itself.<br>
-      <span>Enter</span> starts new key row (Enter itself gets not shown as key).
-    </p>
-    <div style="min-height: 200px; margin-top: 20px">
-      <div>
-        <span id="Escape">Esc</span><input id="keyinput"/>
-      </div>
-      <span id="msg"></span>
-    </div>
-    <div style="padding: 20px 5px;">
-      <label>Filename: <input type="text" id="filename"></label>
-      <button id="download">Export Mapping</button>
-    </div>
-    <pre id="output"></pre>
-    <script>
-
-const silent = [
-  'Escape',
-  'Backspace',
-  'Tab',
-  'Enter',
-  'CapsLock',
-  'ShiftLeft', 'ShiftRight',
-  'ControlLeft', 'ControlRight',
-  'MetaLeft', 'MetaRight',
-  'AltLeft', 'AltRight',
-  'F1', 'F2', 'F3', 'F4', 'F5', 'F6', 'F7', 'F8', 'F9', 'F10', 'F11', 'F12',
-];
-const modifier = [
-  'CapsLock',
-  'ShiftLeft', 'ShiftRight',
-  'ControlLeft', 'ControlRight',
-  'MetaLeft', 'MetaRight',
-  'AltLeft', 'AltRight',
-];
-const prevent = ['Tab', 'F1', 'F2', 'F3', 'F4', 'F5', 'F6', 'F7', 'F8', 'F9', 'F10', 'F11', 'F12'];
-const rename = { 'Escape': 'Esc', 'CapsLock': 'CapsL' };
-
-const inp = document.querySelector('#keyinput');
-inp.focus();
-let current_code = '';
-let err = false;
-const data = {};
-let cl_hold = false;
-let dead_code = '';
-let charProduced = false;
-
-function getClState(ev) {
-  if (ev.code !== 'CapsLock') {
-    cl_hold = ev.getModifierState('CapsLock');
-    return cl_hold;
-  }
-  if (ev.type === 'keydown' && ev.code === 'CapsLock') {
-    cl_hold = !cl_hold;
-    return true;
-  }
-  return cl_hold;
-}
-
-function createSpan(code, value) {
-  const el = document.createElement('span');
-  el.innerText = rename[value] ?? value;
-  el.id = code;
-  el.style.boxShadow = 'inset black 1px 1px 1px';
-  inp.parentNode.insertBefore(el, inp);
-}
-
-function showMsg(s) {
-  const el = document.querySelector('#msg');
-  el.innerText = s;
-  el.style.display = 'block';
-}
-
-function hideMsg() {
-  const el = document.querySelector('#msg');
-  el.style.display = 'none';
-}
-
-inp.addEventListener('keyup', ev => {
-  console.log('up', ev);
-  const cl_state = getClState(ev);
-  const el = document.querySelector('#'+ev.code);
-  if (el && ev.code !== 'CapsLock') el.style.boxShadow = 'black 1px 1px 1px';
-  const cl = document.querySelector('#CapsLock');
-  if (cl) {
-    if (cl_state) {
-      cl.style.boxShadow = 'inset black 1px 1px 1px';
-    } else {
-      cl.style.boxShadow = 'black 1px 1px 1px';
-    }
-  }
-  if (charProduced) {
-    hideMsg();
-    dead_code = '';
-  }
-  if (ev.key === 'Dead' && ev.code !== current_code) {
-    showMsg('Dead key found, press same key again.');
-    dead_code = ev.code;
-    current_code = ev.code;
-    if (!document.querySelector('#'+current_code)) {
-      createSpan(current_code, ev.key);
-    } else {
-      document.querySelector('#'+current_code).style.boxShadow = 'inset black 1px 1px 1px';
-    }
-  }
-});
-
-inp.addEventListener('keydown', ev => {
-  hideMsg();
-  charProduced = false;
-  console.log('down', ev);
-  const cl_state = getClState(ev);
-  const cl = document.querySelector('#CapsLock');
-  if (cl) {
-    if (cl_state) {
-      cl.style.boxShadow = 'inset black 1px 1px 1px';
-    } else {
-      cl.style.boxShadow = 'black 1px 1px 1px';
-    }
-  }
-  if ((ev.code === 'Unidentified' || ev.code === '')) {
-    if (dead_code) {
-      current_code = dead_code;
-      return;
-    };
-    err = true;
-    ev.preventDefault();
-    ev.stopImmediatePropagation();
-    showMsg('Unidentified key found.');
-    return;
-  }
-  if (ev.code === 'Escape') {
-    inp.previousSibling?.remove();
-  }
-  if (prevent.includes(ev.code)) {
-    ev.preventDefault();
-    ev.stopImmediatePropagation();
-    ev.stopPropagation();
-  }
-  if (current_code == 'CapsLock' && ev.code == 'CapsLock') {
-    return;
-  }
-  if (!modifier.includes(ev.code)) {
-    if (ev.shiftKey || ev.altKey || ev.ctrlKey || ev.getModifierState('CapsLock') || ev.getModifierState('AltGraph')) {
-      showMsg('Disable modifier keys.');
-      err = true;
-      return;
-    }
-  }
-  if (dead_code) {
-    if (ev.code !== dead_code) {
-      showMsg('Dead key found, press same key again.');
-      err = true;
-      return;
-    }
-    dead_code = '';
-  }
-  if (ev.key === 'Dead' && ev.code !== current_code) {
-    showMsg('Dead key found, press same key again.');
-    dead_code = ev.code;
-  }
-  err =false;
-  current_code = ev.code;
-  if (ev.code === 'Enter') {
-    const el = document.createElement('br');
-    inp.parentNode.insertBefore(el, inp);
-    return;
-  }
-  if (silent.includes(current_code) || ev.key === 'Dead') {
-    if (!document.querySelector('#'+current_code)) {
-      createSpan(current_code, ev.key);
-    } else {
-      document.querySelector('#'+current_code).style.boxShadow = 'inset black 1px 1px 1px';
-    }
-  }
-});
-
-inp.addEventListener('input', ev => {
-  if (!ev.target.value || err) {
-    ev.target.value = '';
-    return;
-  }
-  charProduced = true;
-  data[current_code] = ev.target.value;
-  let value = ev.target.value;
-  if (value === ' ') value = '\xa0'.repeat(50);
-  ev.target.value = '';
-  if (document.querySelector('#'+current_code)) {
-    const el = document.querySelector('#'+current_code);
-    el.innerText = value;
-    el.style.boxShadow = 'inset black 1px 1px 1px';
-  } else {
-    createSpan(current_code, value);
-  }
-  let keys = Object.keys(data).sort();
-  const final = {};
-  for (const key of keys) final[key] = data[key];
-  const out = JSON.stringify(final, null, 2);
-  console.log(out);
-  document.querySelector('#output').innerText = out;
-});
-
-function download() {
-  let keys = Object.keys(data).sort();
-  const final = {};
-  for (const key of keys) final[key] = data[key];
-  const out = JSON.stringify(final, null, 2);
-  const blob = new Blob([out], { type: 'application/json' });
-  const url = URL.createObjectURL(blob);
-  const link = document.createElement('a');
-  link.setAttribute('href', url);
-  link.setAttribute('download', document.querySelector('#filename').value || 'data.json');
-  document.body.appendChild(link);
-  link.click();
-  document.body.removeChild(link);
-  URL.revokeObjectURL(url);
-}
-document.querySelector('#download').addEventListener('click', download);
-    </script>
-  </body>
-</html>
diff --git a/fixtures/keyboard_layouts/DE.json b/fixtures/keyboard_layouts/DE.json
deleted file mode 100644
index 1623cab94..000000000
--- a/fixtures/keyboard_layouts/DE.json
+++ /dev/null
@@ -1,50 +0,0 @@
-{
-  "Backquote": "^",
-  "Backslash": "#",
-  "BracketLeft": "ü",
-  "BracketRight": "+",
-  "Comma": ",",
-  "Digit0": "0",
-  "Digit1": "1",
-  "Digit2": "2",
-  "Digit3": "3",
-  "Digit4": "4",
-  "Digit5": "5",
-  "Digit6": "6",
-  "Digit7": "7",
-  "Digit8": "8",
-  "Digit9": "9",
-  "Equal": "´",
-  "IntlBackslash": "<",
-  "KeyA": "a",
-  "KeyB": "b",
-  "KeyC": "c",
-  "KeyD": "d",
-  "KeyE": "e",
-  "KeyF": "f",
-  "KeyG": "g",
-  "KeyH": "h",
-  "KeyI": "i",
-  "KeyJ": "j",
-  "KeyK": "k",
-  "KeyL": "l",
-  "KeyM": "m",
-  "KeyN": "n",
-  "KeyO": "o",
-  "KeyP": "p",
-  "KeyQ": "q",
-  "KeyR": "r",
-  "KeyS": "s",
-  "KeyT": "t",
-  "KeyU": "u",
-  "KeyV": "v",
-  "KeyW": "w",
-  "KeyX": "x",
-  "KeyY": "z",
-  "KeyZ": "y",
-  "Minus": "ß",
-  "Period": ".",
-  "Quote": "ä",
-  "Semicolon": "ö",
-  "Slash": "-"
-}
\ No newline at end of file
diff --git a/fixtures/keyboard_layouts/ES.json b/fixtures/keyboard_layouts/ES.json
deleted file mode 100644
index 130be6d3d..000000000
--- a/fixtures/keyboard_layouts/ES.json
+++ /dev/null
@@ -1,50 +0,0 @@
-{
-  "Backquote": "º",
-  "Backslash": "ç",
-  "BracketLeft": "`",
-  "BracketRight": "+",
-  "Comma": ",",
-  "Digit0": "0",
-  "Digit1": "1",
-  "Digit2": "2",
-  "Digit3": "3",
-  "Digit4": "4",
-  "Digit5": "5",
-  "Digit6": "6",
-  "Digit7": "7",
-  "Digit8": "8",
-  "Digit9": "9",
-  "Equal": "¡",
-  "IntlBackslash": "<",
-  "KeyA": "a",
-  "KeyB": "b",
-  "KeyC": "c",
-  "KeyD": "d",
-  "KeyE": "e",
-  "KeyF": "f",
-  "KeyG": "g",
-  "KeyH": "h",
-  "KeyI": "i",
-  "KeyJ": "j",
-  "KeyK": "k",
-  "KeyL": "l",
-  "KeyM": "m",
-  "KeyN": "n",
-  "KeyO": "o",
-  "KeyP": "p",
-  "KeyQ": "q",
-  "KeyR": "r",
-  "KeyS": "s",
-  "KeyT": "t",
-  "KeyU": "u",
-  "KeyV": "v",
-  "KeyW": "w",
-  "KeyX": "x",
-  "KeyY": "y",
-  "KeyZ": "z",
-  "Minus": "'",
-  "Period": ".",
-  "Quote": "´",
-  "Semicolon": "ñ",
-  "Slash": "-"
-}
\ No newline at end of file
diff --git a/fixtures/keyboard_layouts/ES_LA.json b/fixtures/keyboard_layouts/ES_LA.json
deleted file mode 100644
index 7178f4355..000000000
--- a/fixtures/keyboard_layouts/ES_LA.json
+++ /dev/null
@@ -1,50 +0,0 @@
-{
-  "Backquote": "|",
-  "Backslash": "}",
-  "BracketLeft": "´",
-  "BracketRight": "+",
-  "Comma": ",",
-  "Digit0": "0",
-  "Digit1": "1",
-  "Digit2": "2",
-  "Digit3": "3",
-  "Digit4": "4",
-  "Digit5": "5",
-  "Digit6": "6",
-  "Digit7": "7",
-  "Digit8": "8",
-  "Digit9": "9",
-  "Equal": "¿",
-  "IntlBackslash": "<",
-  "KeyA": "a",
-  "KeyB": "b",
-  "KeyC": "c",
-  "KeyD": "d",
-  "KeyE": "e",
-  "KeyF": "f",
-  "KeyG": "g",
-  "KeyH": "h",
-  "KeyI": "i",
-  "KeyJ": "j",
-  "KeyK": "k",
-  "KeyL": "l",
-  "KeyM": "m",
-  "KeyN": "n",
-  "KeyO": "o",
-  "KeyP": "p",
-  "KeyQ": "q",
-  "KeyR": "r",
-  "KeyS": "s",
-  "KeyT": "t",
-  "KeyU": "u",
-  "KeyV": "v",
-  "KeyW": "w",
-  "KeyX": "x",
-  "KeyY": "y",
-  "KeyZ": "z",
-  "Minus": "'",
-  "Period": ".",
-  "Quote": "{",
-  "Semicolon": "ñ",
-  "Slash": "-"
-}
\ No newline at end of file
diff --git a/fixtures/keyboard_layouts/FR.json b/fixtures/keyboard_layouts/FR.json
deleted file mode 100644
index bfde35829..000000000
--- a/fixtures/keyboard_layouts/FR.json
+++ /dev/null
@@ -1,50 +0,0 @@
-{
-  "Backquote": "²",
-  "Backslash": "*",
-  "BracketLeft": "^",
-  "BracketRight": "$",
-  "Comma": ";",
-  "Digit0": "à",
-  "Digit1": "&",
-  "Digit2": "é",
-  "Digit3": "\"",
-  "Digit4": "'",
-  "Digit5": "(",
-  "Digit6": "-",
-  "Digit7": "è",
-  "Digit8": "_",
-  "Digit9": "ç",
-  "Equal": "=",
-  "IntlBackslash": "<",
-  "KeyA": "q",
-  "KeyB": "b",
-  "KeyC": "c",
-  "KeyD": "d",
-  "KeyE": "e",
-  "KeyF": "f",
-  "KeyG": "g",
-  "KeyH": "h",
-  "KeyI": "i",
-  "KeyJ": "j",
-  "KeyK": "k",
-  "KeyL": "l",
-  "KeyM": ",",
-  "KeyN": "n",
-  "KeyO": "o",
-  "KeyP": "p",
-  "KeyQ": "a",
-  "KeyR": "r",
-  "KeyS": "s",
-  "KeyT": "t",
-  "KeyU": "u",
-  "KeyV": "v",
-  "KeyW": "z",
-  "KeyX": "x",
-  "KeyY": "y",
-  "KeyZ": "w",
-  "Minus": ")",
-  "Period": ":",
-  "Quote": "ù",
-  "Semicolon": "m",
-  "Slash": "!"
-}
\ No newline at end of file
diff --git a/fixtures/keyboard_layouts/GR.json b/fixtures/keyboard_layouts/GR.json
deleted file mode 100644
index fc106276f..000000000
--- a/fixtures/keyboard_layouts/GR.json
+++ /dev/null
@@ -1,50 +0,0 @@
-{
-  "Backquote": "`",
-  "Backslash": "\\",
-  "BracketLeft": "[",
-  "BracketRight": "]",
-  "Comma": ",",
-  "Digit0": "0",
-  "Digit1": "1",
-  "Digit2": "2",
-  "Digit3": "3",
-  "Digit4": "4",
-  "Digit5": "5",
-  "Digit6": "6",
-  "Digit7": "7",
-  "Digit8": "8",
-  "Digit9": "9",
-  "Equal": "=",
-  "IntlBackslash": "«",
-  "KeyA": "α",
-  "KeyB": "β",
-  "KeyC": "ψ",
-  "KeyD": "δ",
-  "KeyE": "ε",
-  "KeyF": "φ",
-  "KeyG": "γ",
-  "KeyH": "η",
-  "KeyI": "ι",
-  "KeyJ": "ξ",
-  "KeyK": "κ",
-  "KeyL": "λ",
-  "KeyM": "μ",
-  "KeyN": "ν",
-  "KeyO": "ο",
-  "KeyP": "π",
-  "KeyQ": ";",
-  "KeyR": "ρ",
-  "KeyS": "σ",
-  "KeyT": "τ",
-  "KeyU": "θ",
-  "KeyV": "ω",
-  "KeyW": "ς",
-  "KeyX": "χ",
-  "KeyY": "υ",
-  "KeyZ": "ζ",
-  "Minus": "-",
-  "Period": ".",
-  "Quote": "'",
-  "Semicolon": "´",
-  "Slash": "/"
-}
\ No newline at end of file
diff --git a/fixtures/keyboard_layouts/RU.json b/fixtures/keyboard_layouts/RU.json
deleted file mode 100644
index ef0fce478..000000000
--- a/fixtures/keyboard_layouts/RU.json
+++ /dev/null
@@ -1,50 +0,0 @@
-{
-  "Backquote": "ё",
-  "Backslash": "\\",
-  "BracketLeft": "х",
-  "BracketRight": "ъ",
-  "Comma": "б",
-  "Digit0": "0",
-  "Digit1": "1",
-  "Digit2": "2",
-  "Digit3": "3",
-  "Digit4": "4",
-  "Digit5": "5",
-  "Digit6": "6",
-  "Digit7": "7",
-  "Digit8": "8",
-  "Digit9": "9",
-  "Equal": "=",
-  "IntlBackslash": "/",
-  "KeyA": "ф",
-  "KeyB": "и",
-  "KeyC": "с",
-  "KeyD": "в",
-  "KeyE": "у",
-  "KeyF": "а",
-  "KeyG": "п",
-  "KeyH": "р",
-  "KeyI": "ш",
-  "KeyJ": "о",
-  "KeyK": "л",
-  "KeyL": "д",
-  "KeyM": "ь",
-  "KeyN": "т",
-  "KeyO": "щ",
-  "KeyP": "з",
-  "KeyQ": "й",
-  "KeyR": "к",
-  "KeyS": "ы",
-  "KeyT": "е",
-  "KeyU": "г",
-  "KeyV": "м",
-  "KeyW": "ц",
-  "KeyX": "ч",
-  "KeyY": "н",
-  "KeyZ": "я",
-  "Minus": "-",
-  "Period": "ю",
-  "Quote": "э",
-  "Semicolon": "ж",
-  "Slash": "."
-}
\ No newline at end of file
diff --git a/fixtures/keyboard_layouts/US.json b/fixtures/keyboard_layouts/US.json
deleted file mode 100644
index 9ac9d7200..000000000
--- a/fixtures/keyboard_layouts/US.json
+++ /dev/null
@@ -1,50 +0,0 @@
-{
-  "Backquote": "`",
-  "Backslash": "\\",
-  "BracketLeft": "[",
-  "BracketRight": "]",
-  "Comma": ",",
-  "Digit0": "0",
-  "Digit1": "1",
-  "Digit2": "2",
-  "Digit3": "3",
-  "Digit4": "4",
-  "Digit5": "5",
-  "Digit6": "6",
-  "Digit7": "7",
-  "Digit8": "8",
-  "Digit9": "9",
-  "Equal": "=",
-  "IntlBackslash": "\\",
-  "KeyA": "a",
-  "KeyB": "b",
-  "KeyC": "c",
-  "KeyD": "d",
-  "KeyE": "e",
-  "KeyF": "f",
-  "KeyG": "g",
-  "KeyH": "h",
-  "KeyI": "i",
-  "KeyJ": "j",
-  "KeyK": "k",
-  "KeyL": "l",
-  "KeyM": "m",
-  "KeyN": "n",
-  "KeyO": "o",
-  "KeyP": "p",
-  "KeyQ": "q",
-  "KeyR": "r",
-  "KeyS": "s",
-  "KeyT": "t",
-  "KeyU": "u",
-  "KeyV": "v",
-  "KeyW": "w",
-  "KeyX": "x",
-  "KeyY": "y",
-  "KeyZ": "z",
-  "Minus": "-",
-  "Period": ".",
-  "Quote": "'",
-  "Semicolon": ";",
-  "Slash": "/"
-}
\ No newline at end of file
diff --git a/src/common/input/Layout.ts b/src/common/input/Layout.ts
deleted file mode 100644
index 40e7e3f48..000000000
--- a/src/common/input/Layout.ts
+++ /dev/null
@@ -1,293 +0,0 @@
-/**
- * Copyright (c) 2026 The xterm.js authors. All rights reserved.
- * @license MIT
- *
- * Keyboard layout detection.
- */
-
-
-interface IMap {
-  acc: {[index: string]: number};
-  map: {[index: string]: string | string[]};
-}
-
-interface IKeyResult {
-  layouts: string[];
-  certain: number;
-  key: string | undefined | (string | undefined)[];
-}
-
-
-/**
- * rebuild map: node bin/keyboard_layouts.mjs fixtures/keyboard_layouts/*
- */
-const MAP: IMap = {
-  acc: { DE: 0, ES: 1, ES_LA: 2, FR: 3, GR: 4, RU: 5, US: 6 },
-  map: {
-    Backquote: '^º|²`ё`',
-    Backslash: '#ç}*\\\\\\',
-    BracketLeft: 'ü`´^[х[',
-    BracketRight: '+++$]ъ]',
-    Comma: ',,,;,б,',
-    Digit0: '000à000',
-    Digit1: '111&111',
-    Digit2: '222é222',
-    Digit3: '333"333',
-    Digit4: "444'444",
-    Digit5: '555(555',
-    Digit6: '666-666',
-    Digit7: '777è777',
-    Digit8: '888_888',
-    Digit9: '999ç999',
-    Equal: '´¡¿====',
-    IntlBackslash: '<<<<«/\\',
-    KeyA: 'aaaqαфa',
-    KeyB: 'bbbbβиb',
-    KeyC: 'ccccψсc',
-    KeyD: 'ddddδвd',
-    KeyE: 'eeeeεуe',
-    KeyF: 'ffffφаf',
-    KeyG: 'ggggγпg',
-    KeyH: 'hhhhηрh',
-    KeyI: 'iiiiιшi',
-    KeyJ: 'jjjjξоj',
-    KeyK: 'kkkkκлk',
-    KeyL: 'llllλдl',
-    KeyM: 'mmm,μьm',
-    KeyN: 'nnnnνтn',
-    KeyO: 'ooooοщo',
-    KeyP: 'ppppπзp',
-    KeyQ: 'qqqa;йq',
-    KeyR: 'rrrrρкr',
-    KeyS: 'ssssσыs',
-    KeyT: 'ttttτеt',
-    KeyU: 'uuuuθгu',
-    KeyV: 'vvvvωмv',
-    KeyW: 'wwwzςцw',
-    KeyX: 'xxxxχчx',
-    KeyY: 'zyyyυнy',
-    KeyZ: 'yzzwζяz',
-    Minus: "ß'')---",
-    Period: '...:.ю.',
-    Quote: "ä´{ù'э'",
-    Semicolon: 'öññm´ж;',
-    Slash: '---!/./'
-  }
-};
-
-
-export class LayoutDetector {
-  private _keys: {[index: string]: number} = {};
-  private _values: (string | string[])[] = [];
-  private _rec: string[] = [];
-  private _acc: string[] = Object.keys(MAP.acc);
-  private _cand: {layout: string; match: number;}[];
-  private _key: IKeyResult;
-
-  constructor() {
-    let p = 0;
-    for (const key of Object.keys(MAP.map)) {
-      this._keys[key] = p++;
-      this._values.push(MAP.map[key]);
-      this._rec.push('');
-    }
-    this._cand = [...this._acc].map(e => ({layout: e, match: 0 }));
-    this._key = { layouts: ['US_QWERTY'], certain: 0, key: undefined };
-  }
-
-  /**
-   * Reset detector.
-   */
-  public reset(): void {
-    this._rec = this._rec.map(e => '');
-  }
-
-  /**
-   * Return list of registered layouts.
-   */
-  public get layouts(): string[] {
-    return Object.keys(MAP.acc);
-  }
-
-  /**
-   * Return list of supported key codes.
-   */
-  public get codes(): string[] {
-    return Object.keys(MAP.map);
-  }
-
-  /**
-   * Get character key for key code and layout.
-   * The known key codes can be requested with `.codes`,
-   * the registered layouts with `.layouts`.
-   */
-  public getLayoutKey(code: string, layout: string): string | undefined {
-    if (MAP.acc[layout] !== undefined && MAP.map[code]) {
-      return MAP.map[code][MAP.acc[layout]];
-    }
-  }
-
-  /**
-   * Feed a keyboard event `ev` to the detector.
-   */
-  public feed(ev: KeyboardEvent): void {
-    // FIXME: Should we check for OS? (not supported by Safari)
-    if (ev.shiftKey || ev.ctrlKey || ev.altKey || ev.metaKey
-      || ev.getModifierState('AltGraph')
-      || ev.getModifierState('CapsLock')
-    ) {
-      return;
-    }
-    const pos = this._keys[ev.code];
-    if (pos !== undefined) {
-      if (this._rec[pos] && this._rec[pos] !== ev.key) {
-        // The key value should never change for the same layout,
-        // so we treat a sudden change as a layout change.
-        this.reset();
-      }
-      this._rec[pos] = ev.key;
-    }
-  }
-
-  /**
-   * Shows all known layouts and their degree of matching mappings
-   * sorted descending (likely layouts first).
-   * Ideally there is only one leading layout with a match of 1.
-   * If the leading match is not 1, then the user uses an
-   * unknown or custom layout.
-   */
-  public matches(): {layout: string; match: number;}[] {
-    for (let i = 0; i < this._cand.length; ++i) {
-      this._cand[i].match = 0;
-    }
-    let c = 0;
-    for (let k = 0; k < this._rec.length; ++k) {
-      const v = this._rec[k];
-      if (v) {
-        c++;
-        const values = this._values[k];
-        for (let i = 0; i < this._acc.length; ++i) {
-          if (v === values[i]) {
-            this._cand[i].match++;
-          }
-        }
-      }
-    }
-    if (!c) {
-      return this._cand;
-    }
-    const sorted = [...this._cand].sort((a, b) => b.match - a.match);
-    for (let i = 0; i < sorted.length; ++i) {
-      sorted[i].match /= c;
-    }
-    return sorted;
-  }
-
-  /**
-   * Tries to resolve a key code to a key character.
-   * If `certain` is 1 then the result matches the listed layouts.
-   * Ideally only one layout is returned, then the detector has seen enough
-   * key events in `feed`.
-   * If multiple layouts are returned but only one key, then the layout is
-   * not yet fully determined but the key code is already known from `feed`.
-   * When multiple keys are returned, then the character undetermined
-   * and the layout needs further resolving with resolve.
-   * A certainty lesser than 1 can have different reasons:
-   * - not enough key event fed yet (multiple layouts returned)
-   * - user has an unknown or custom layout
-   * If `certain` is 0 the result should not be used as the dector
-   * has not seen any key events at all.
-   */
-  public getKey(code: string): IKeyResult {
-    const lm = this.matches();
-    let candidates = [];
-    let lastMatch = 0;
-    for (let i = 0; i < lm.length; ++i) {
-      if (lm[i].match === 0) {
-        break;
-      }
-      if (lm[i].match === 1) {
-        lastMatch = 1;
-        candidates.push(lm[i].layout);
-      } else if (lm[i].match >= lastMatch) {
-        lastMatch = lm[i].match;
-        candidates.push(lm[i].layout);
-      }
-    }
-    if (candidates.length === 1) {
-      this._key.layouts = candidates;
-      this._key.certain = lastMatch;
-      this._key.key = MAP.map[code]?.[MAP.acc[candidates[0]]];
-      return this._key;
-    }
-    if (!candidates.length) {
-      candidates = [...this._acc];
-    }
-    const values = [];
-    for (let i = 0; i < candidates.length; ++i) {
-      values.push(MAP.map[code]?.[MAP.acc[candidates[i]]]);
-    }
-    const valuesSet = new Set(values);
-    // if all candidates yield the same char, return it
-    if (valuesSet.size === 1) {
-      this._key.layouts = candidates;
-      this._key.certain = lastMatch;
-      const [value] = values;
-      this._key.key = value;
-      return this._key;
-    }
-    // fallthrough
-    this._key.layouts = candidates;
-    this._key.certain = lastMatch / valuesSet.size;
-    this._key.key = values;
-    return this._key;
-  }
-
-  /**
-   * Calculate distance to resolve keyboard layout.
-   * Returns the candicate layouts and a list of keys resolving layout ambiguity.
-   * The key list is sorted descending by candidate differences for a key code
-   * (picking a high difference code needs less follow-up steps).
-   * The user should be asked to press the corresponding key and the key event
-   * should be fed to `feed`.
-   * Repeat this process until this method returns only one layout.
-   */
-  public resolve(): any {
-    const lm = this.matches();
-    let candidates = [];
-    let lastMatch = 0;
-    for (let i = 0; i < lm.length; ++i) {
-      if (lm[i].match === 0) {
-        break;
-      }
-      if (lm[i].match === 1) {
-        lastMatch = 1;
-        candidates.push(lm[i].layout);
-      } else if (lm[i].match >= lastMatch) {
-        lastMatch = lm[i].match;
-        candidates.push(lm[i].layout);
-      }
-    }
-    if (candidates.length === 1) {
-      return { layouts: candidates, keys: [] };
-    }
-    if (!candidates.length) {
-      candidates = [...this._acc];
-    }
-    const acc = candidates.map(e => MAP.acc[e]);
-    const codes = Object.keys(this._keys);
-    const values = [];
-    for (let i = 0; i < this._values.length; ++i) {
-      const value = new Set();
-      for (let k = 0; k < acc.length; ++k) {
-        value.add(this._values[i][k]);
-      }
-      const len = (new Set(value)).size;
-      if (len > 1) {
-        values.push({code: codes[i], keys: [...value].sort()});
-      }
-    }
-    values.sort((a, b) => b.keys.length - a.keys.length);
-    return { layouts: candidates, keys: values };
-  }
-}