@wordpress/keyboard-shortcuts/build-module/context.js

Handling keyboard shortcuts.

/**
 * WordPress dependencies
 */
import { createContext } from '@wordpress/element';
const globalShortcuts = new Set();
const globalListener = event => {
  for (const keyboardShortcut of globalShortcuts) {
    keyboardShortcut(event);
  }
};
export const context = createContext({
  add: shortcut => {
    if (globalShortcuts.size === 0) {
      document.addEventListener('keydown', globalListener);
    }
    globalShortcuts.add(shortcut);
  },
  delete: shortcut => {
    globalShortcuts.delete(shortcut);
    if (globalShortcuts.size === 0) {
      document.removeEventListener('keydown', globalListener);
    }
  }
});
context.displayName = 'KeyboardShortcutsContext';
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