osins/osins-utils

osins-utils is tools lib

install

npm install osins-utils

optional

const a = null
console.log('result:', optional(a).orElse('a'))

result: 'a'

const a = null
console.log('result:', optional<string>(a).ifPresentOrElse((v: string) => {
                return v
            }, () => {
                return 'a'
            }))

result: 'a'