3 files changed, 2 insertions, 178 deletions
diff --git a/app/assets/javascripts/lib/utils/common_utils.js b/app/assets/javascripts/lib/utils/common_utils.js
index 1a94aee2398..5e90893b684 100644
--- a/app/assets/javascripts/lib/utils/common_utils.js
+++ b/app/assets/javascripts/lib/utils/common_utils.js
@@ -203,71 +203,6 @@ export const isMetaKey = e => e.metaKey || e.ctrlKey || e.altKey || e.shiftKey;
 // 3) Middle-click or Mouse Wheel Click (e.which is 2)
 export const isMetaClick = e => e.metaKey || e.ctrlKey || e.which === 2;
 
-export const getPlatformLeaderKey = () => {
-  // eslint-disable-next-line @gitlab/i18n/no-non-i18n-strings
-  if (navigator && navigator.platform && navigator.platform.startsWith('Mac')) {
-    return 'meta';
-  }
-  return 'ctrl';
-};
-
-export const getPlatformLeaderKeyHTML = () => {
-  if (getPlatformLeaderKey() === 'meta') {
-    return '&#8984;';
-  }
-  // eslint-disable-next-line @gitlab/i18n/no-non-i18n-strings
-  return 'Ctrl';
-};
-
-export const isPlatformLeaderKey = e => {
-  if (getPlatformLeaderKey() === 'meta') {
-    return Boolean(e.metaKey);
-  }
-  return Boolean(e.ctrlKey);
-};
-
-/**
- * Tests if a KeyboardEvent corresponds exactly to a keystroke.
- *
- * This function avoids hacking around an old version of Mousetrap, which we ship at the moment. It should be removed after we upgrade to the newest Mousetrap. See:
- * - https://gitlab.com/gitlab-org/gitlab-ce/issues/63182
- * - https://gitlab.com/gitlab-org/gitlab-ce/issues/64246
- *
- * @example
- *     // Matches the enter key with exactly zero modifiers
- *     keystroke(event, 13)
- *
- * @example
- *     // Matches Control-Shift-Z
- *     keystroke(event, 90, 'cs')
- *
- * @param e The KeyboardEvent to test.
- * @param keyCode The key code of the key to test. Why keycodes? IE/Edge don't support the more convenient `key` and `code` properties.
- * @param modifiers A string of modifiers keys. Each modifier key is represented by one character. The set of pressed modifier keys must match the given string exactly. Available options are 'a' for Alt/Option, 'c' for Control, 'm' for Meta/Command, 's' for Shift, and 'l' for the leader key (Meta on MacOS and Control otherwise).
- * @returns {boolean} True if the KeyboardEvent corresponds to the given keystroke.
- */
-export const keystroke = (e, keyCode, modifiers = '') => {
-  if (!e || !keyCode) {
-    return false;
-  }
-
-  const leader = getPlatformLeaderKey();
-  const mods = modifiers.toLowerCase().replace('l', leader.charAt(0));
-
-  // Match depressed modifier keys
-  if (
-    e.altKey !== mods.includes('a') ||
-    e.ctrlKey !== mods.includes('c') ||
-    e.metaKey !== mods.includes('m') ||
-    e.shiftKey !== mods.includes('s')
-  ) {
-    return false;
-  }
-
-  // Match the depressed key
-  return keyCode === (e.keyCode || e.which);
-};
-
 export const contentTop = () => {
   const perfBar = $('#js-peek').outerHeight() || 0;
   const mrTabsHeight = $('.merge-request-tabs').outerHeight() || 0;
diff --git a/app/assets/javascripts/lib/utils/keycodes.js b/app/assets/javascripts/lib/utils/keycodes.js
index e24fcf47d71..5e0f9b612a2 100644
--- a/app/assets/javascripts/lib/utils/keycodes.js
+++ b/app/assets/javascripts/lib/utils/keycodes.js
@@ -1,10 +1,4 @@
-export const BACKSPACE_KEY_CODE = 8;
-export const ENTER_KEY_CODE = 13;
-export const ESC_KEY_CODE = 27;
-export const SPACE_KEY_CODE = 32;
 export const UP_KEY_CODE = 38;
 export const DOWN_KEY_CODE = 40;
-export const Y_KEY_CODE = 89;
-export const Z_KEY_CODE = 90;
-export const LEFT_BRACKET_KEY_CODE = 219;
-export const RIGHT_BRACKET_KEY_CODE = 221;
+export const ENTER_KEY_CODE = 13;
+export const ESC_KEY_CODE = 27;
diff --git a/app/assets/javascripts/lib/utils/undo_stack.js b/app/assets/javascripts/lib/utils/undo_stack.js
deleted file mode 100644
index 6cfdc2a0a0f..00000000000
--- a/app/assets/javascripts/lib/utils/undo_stack.js
+++ /dev/null
@@ -1,105 +0,0 @@
-/**
- * UndoStack provides a custom implementation of an undo/redo engine. It was originally written for GitLab's Markdown editor (`gl_form.js`), whose rich text editing capabilities broke native browser undo/redo behaviour.
- *
- * UndoStack supports predictable undos/redos, debounced saves, maximum history length, and duplicate detection.
- *
- * Usage:
- *   - `stack = new UndoStack();`
- *   - Saves a state to the stack with `stack.save(state)`.
- *   - Get the current state with `stack.current()`.
- *   - Revert to the previous state with `stack.undo()`.
- *   - Redo a previous undo with `stack.redo()`;
- *   - Queue a future save with `stack.scheduleSave(state, delay)`. Useful for text editors.
- *   - See the full undo history in `stack.history`.
- */
-export default class UndoStack {
-  constructor(maxLength = 1000) {
-    this.clear();
-    this.maxLength = maxLength;
-
-    // If you're storing reference-types in the undo stack, you might want to
-    // reassign this property to some deep-equals function.
-    this.comparator = (a, b) => a === b;
-  }
-
-  current() {
-    if (this.cursor === -1) {
-      return undefined;
-    }
-    return this.history[this.cursor];
-  }
-
-  isEmpty() {
-    return this.history.length === 0;
-  }
-
-  clear() {
-    this.clearPending();
-    this.history = [];
-    this.cursor = -1;
-  }
-
-  save(state) {
-    this.clearPending();
-    if (this.comparator(state, this.current())) {
-      // Don't save state if it's the same as the current state
-      return;
-    }
-
-    this.history.length = this.cursor + 1;
-    this.history.push(state);
-    this.cursor += 1;
-
-    if (this.history.length > this.maxLength) {
-      this.history.shift();
-      this.cursor -= 1;
-    }
-  }
-
-  scheduleSave(state, delay = 1000) {
-    this.clearPending();
-    this.pendingState = state;
-    this.timeout = setTimeout(this.saveNow.bind(this), delay);
-  }
-
-  saveNow() {
-    // Persists scheduled saves immediately
-    this.save(this.pendingState);
-    this.clearPending();
-  }
-
-  clearPending() {
-    // Cancels any scheduled saves
-    if (this.timeout) {
-      clearTimeout(this.timeout);
-      delete this.timeout;
-      delete this.pendingState;
-    }
-  }
-
-  canUndo() {
-    return this.cursor > 0;
-  }
-
-  undo() {
-    this.clearPending();
-    if (!this.canUndo()) {
-      return undefined;
-    }
-    this.cursor -= 1;
-    return this.history[this.cursor];
-  }
-
-  canRedo() {
-    return this.cursor >= 0 && this.cursor < this.history.length - 1;
-  }
-
-  redo() {
-    this.clearPending();
-    if (!this.canRedo()) {
-      return undefined;
-    }
-    this.cursor += 1;
-    return this.history[this.cursor];
-  }
-}