I tried to find this in the documentation and examples, but there's no example of a manual request being made, only <form action="/login" method="post">

I tried:

let form = this.document.getElementById( 'loginForm' );
var formData = new FormData( form );
let res = await fetch( '/', {
    method: 'POST',
    body: formData,
    header: { 'Content-Type': 'multipart/form-data' },
})

The feature list on the documentation is wrong. It refers to a missing feature. See at:

https://github.com/actix/actix-web/blob/206733188478f4d18df376a72fac3a4938b99bd6/src/lib.rs#L79

I found that when looking for a way to disable to client build.

Correct the terminology used in code and documentation so that it is consistent with HTTPie and web standards. Examples:

• body parameter -> data field
• operator -> separator