JS to TS: src/simulator/src/hotkey_binder/model/shortcuts.plugin.ts #425
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WalkthroughThe changes involve migrating the keyboard shortcut management functionality from a JavaScript implementation to a TypeScript implementation. The new version introduces type definitions and interfaces to enhance type safety and provide more structured shortcut management. The core functionality remains similar, with methods for adding, removing, and managing keyboard shortcuts, but now with improved type annotations and more explicit type checking. Changes
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Actionable comments posted: 3
🧹 Nitpick comments (5)
src/simulator/src/hotkey_binder/model/shortcuts.plugin.ts (5)
1-18: Add TypeScript-specific documentation.While the existing documentation covers usage restrictions well, consider adding:
- Type information for key parameters
- Examples of valid shortcut combinations using TypeScript
- Return type documentation
19-25: Improve type safety for target property.Instead of using
stringfor the target property, consider using a more specific type likeHTMLElement['id']to ensure only valid element IDs are passed.- target?: Document | string + target?: Document | HTMLElement['id']
52-55: Replace type assertion with type guard.Instead of using type assertion, implement a type guard for better type safety.
-let ele: Document | HTMLElement = options.target as Document | HTMLElement -if (typeof options.target === 'string') { - ele = document.getElementById(options.target) || document -} +const isDocumentTarget = (target: ShortcutOptions['target']): target is Document => + target instanceof Document + +let ele: Document | HTMLElement +if (typeof options.target === 'string') { + ele = document.getElementById(options.target) || document +} else { + ele = isDocumentTarget(options.target) ? options.target : document +}
164-170: Modernize event listener attachment.The code uses older event attachment methods for compatibility. Consider modernizing this with a proper fallback strategy.
- if (ele.addEventListener) { - ele.addEventListener(options.type || 'keydown', func, false) - } else if ((ele as any).attachEvent) { - (ele as any).attachEvent('on' + (options.type || 'keydown'), func) - } else { - (ele as any)['on' + (options.type || 'keydown')] = func - } + const eventType = options.type || 'keydown' + try { + ele.addEventListener(eventType, func, false) + } catch (error) { + console.warn(`Failed to attach event listener: ${error}`) + // Fallback for older browsers + try { + (ele as any).attachEvent?.('on' + eventType, func) + } catch (fallbackError) { + console.error(`Event listener attachment failed: ${fallbackError}`) + } + }
38-40: Consider adding cleanup method for memory management.The
all_shortcutsobject could grow indefinitely. Consider adding a method to clean up unused shortcuts and prevent memory leaks.
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- src/simulator/src/hotkey_binder/model/shortcuts.plugin.js
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Actionable comments posted: 0
🧹 Nitpick comments (5)
src/simulator/src/hotkey_binder/model/shortcuts.plugin.ts (5)
17-17: Enhance modification documentation.The comment "*! This plugin has been modified" should include details about what modifications were made, especially since this is a TypeScript migration.
-//*! This plugin has been modified +//*! This plugin has been modified to: +// - Migrate from JavaScript to TypeScript +// - Add type safety through interfaces +// - Improve error handling
19-25: Improve type definitions for better type safety.The
ShortcutOptionsinterface could benefit from more specific types:interface ShortcutOptions { - type?: string + type?: 'keydown' | 'keyup' | 'keypress' - target?: Document | string + target?: Document | HTMLElement | string propagate?: boolean disable_in_input?: boolean keycode?: number | false }
52-55: Improve target element resolution.The target element resolution could be more robust by:
- Adding type guard
- Handling case when element is not found
-let ele: Document | HTMLElement = options.target as Document | HTMLElement -if (typeof options.target === 'string') { - ele = document.getElementById(options.target) || document -} +let ele: Document | HTMLElement +if (typeof options.target === 'string') { + const targetElement = document.getElementById(options.target) + if (!targetElement) { + console.warn(`Target element "${options.target}" not found, falling back to document`) + ele = document + } else { + ele = targetElement + } +} else { + ele = options.target as Document | HTMLElement +}
84-105: Move key mappings to constants.The shift numbers and special keys mappings should be moved outside the function to avoid recreation on each call.
+const SHIFT_NUMS: Readonly<Record<string, string>> = { + '`': '~', '1': '!', '2': '@', '3': '#', '4': '$', '5': '%', + '6': '^', '7': '&', '8': '*', '9': '(', '0': ')', + '-': '_', '=': '+', ';': ':', "'": '"', + ',': '<', '.': '>', '/': '?', '\\': '|' +} as const + +const SPECIAL_KEYS: Readonly<Record<string, number>> = { + esc: 27, escape: 27, tab: 9, space: 32, + // ... rest of the special keys +} as const + const func: EventListener = (evt: Event): void => { // ... - const shift_nums: Record<string, string> = { - '`': '~', 1: '!', 2: '@', // ... - } - const special_keys: Record<string, number> = { - esc: 27, escape: 27, // ... - } + const shift_nums = SHIFT_NUMS + const special_keys = SPECIAL_KEYS
168-174: Consider modernizing event binding.The code includes legacy event binding methods that might not be necessary for modern browsers.
- if (ele.addEventListener) { - ele.addEventListener(options.type || 'keydown', func, false) - } else if ((ele as any).attachEvent) { - (ele as any).attachEvent('on' + (options.type || 'keydown'), func) - } else { - (ele as any)['on' + (options.type || 'keydown')] = func - } + ele.addEventListener(options.type || 'keydown', func, false)If legacy browser support is still required, consider adding a comment explaining why:
// Note: attachEvent and on* event handlers are kept for legacy browser support
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🔇 Additional comments (1)
src/simulator/src/hotkey_binder/model/shortcuts.plugin.ts (1)
177-210: LGTM! Error handling looks good.The error handling in both
removeandremoveAllmethods is well implemented, following the suggestions from previous reviews.
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My code takes almost same lines as the previous code, so adhering to code climate doesn't seem plausible |
Fixes #414
@niladrix719 @JoshVarga @Arnabdaz @devartstar
Summary by CodeRabbit
Summary by CodeRabbit
Refactor
New Features
Documentation