bobdobbalina · June 3, 2020 13:48
diff --git a/parameter-validation.js b/parameter-validation.js
 const isRequired = () => { throw new Error('param is required'); };
 const print = (num = isRequired()) => { console.log(`printing ${num}`) };
 print(2);//printing 2
 print()// error
 print(null)//printing null
	const isRequired = () => { throw new Error('param is required'); };
	const print = (num = isRequired()) => { console.log(`printing ${num}`) };
	print(2);//printing 2
	print()// error
	print(null)//printing null