1  export type ModifierKey = 'shift' | 'command' | 'control' | 'option'
 2  
 3  let prewarmed = false
 4  
 5  /**
 6   * Pre-warm the native module by loading it in advance.
 7   * Call this early to avoid delay on first use.
 8   */
 9  export function prewarmModifiers(): void {
10    if (prewarmed || process.platform !== 'darwin') {
11      return
12    }
13    prewarmed = true
14    // Load module in background
15    try {
16      // eslint-disable-next-line @typescript-eslint/no-require-imports
17      const { prewarm } = require('modifiers-napi') as { prewarm: () => void }
18      prewarm()
19    } catch {
20      // Ignore errors during prewarm
21    }
22  }
23  
24  /**
25   * Check if a specific modifier key is currently pressed (synchronous).
26   */
27  export function isModifierPressed(modifier: ModifierKey): boolean {
28    if (process.platform !== 'darwin') {
29      return false
30    }
31    // Dynamic import to avoid loading native module at top level
32    const { isModifierPressed: nativeIsModifierPressed } =
33      // eslint-disable-next-line @typescript-eslint/no-require-imports
34      require('modifiers-napi') as { isModifierPressed: (m: string) => boolean }
35    return nativeIsModifierPressed(modifier)
36  }