各位前辈、先进们好：
小弟目前在学Angular，遇到以下JavaScript Code不晓得要如何转为TypeScript：
(() => {
'use strict'
const forms = document.querySelectorAll('.needs-validation')
// Loop over them and prevent submission
Array.from(forms).forEach(form => {
form.addEventListener('submit', event => {
if (!form.checkValidity()) {
event.preventDefault()
event.stopPropagation()
}
form.classList.add('was-validated')
}, false)
})
})()

? 你这个code不用转啊 ts的api跟js一样只是多了静态型别