fix: add type-safe error handling to install scripts

Signed-off-by: leocavalcante <leo@cavalcante.dev>

Author: leocavalcante

postinstall.mjs

@@ -78,7 +78,8 @@ function main() {
 			copyFileSync(sourcePath, targetPath)
 			successes.push(file)
 			console.log(`  Installed: ${file}`)
-		} catch (error) {
+		} catch (err) {
+			const error = err instanceof Error ? err : new Error(String(err))
 			const message = getErrorMessage(error, file, targetPath)
 			failures.push({ file, message })
 			console.error(`  Failed: ${file} - ${message}`)

preuninstall.mjs

@@ -51,7 +51,8 @@ function main() {
 				console.log(`  Removed: ${file}`)
 				removedCount++
 			} catch (err) {
-				console.error(`  Warning: Could not remove ${file}: ${err.message}`)
+				const message = err instanceof Error ? err.message : String(err)
+				console.error(`  Warning: Could not remove ${file}: ${message}`)
 			}
 		}
 	}