js,vfmt: fix formatting for JS types; add fetch API (#12608)

vlib/js/dom/dom.js.v

@@ -271,6 +271,11 @@ pub interface JS.Document {
 	queryCommandState(commandId JS.String) JS.String
 	write(text ...JS.Any)
 	writeln(text ...JS.Any)
+	exitFullscreen() JS.Promise
+	exitPictureInPicture() JS.Promise
+	exitPointerLock()
+	requestPointerLock()
+	requestFullScreen() JS.Promise
 mut:
 	bgColor JS.String
 	fgColor JS.String

vlib/js/js.js.v

@@ -0,0 +1,33 @@
+module js
+
+import js.promise
+
+pub fn JS.fetch(input JS.String, init JS.Object) JS.Promise
+
+pub interface JS.Body {
+	body JS.Uint8Array
+	bodyUse JS.Boolean
+	blob() JS.Promise
+	json() JS.Promise
+	text() JS.Promise
+}
+
+pub interface JS.Response {
+	JS.Body
+	ok JS.Boolean
+	redirected JS.Boolean
+	status JS.Number
+	statusText JS.String
+	url JS.String
+	clone() JS.Response
+}
+
+pub fn fetch(input string, init map[string]JS.Any) promise.Promise<JS.Response, JS.String> {
+	p_init := JS.Any(voidptr(0))
+	p := promise.Promise<JS.Response,String>{p_init}
+
+	#let obj = {}; for (let [key,val] of init.map) { obj[key] = val; }
+	#p.promise = fetch(input.str,obj);
+
+	return p
+}

vlib/js/promise/promise.js.v

@@ -68,12 +68,14 @@ pub fn JS.Promise.all(JS.Array) JS.Promise
 pub fn JS.Promise.allSettled(JS.Array) JS.Promise
 
 /*
+pub type JsAny = JS.Any
+
 // all takes an iterable of promises as an input, and returns a single Promise that resolves to an array of
 // the results of the input promises
-pub fn all(array []JS.Promise) Promise<JS.Array, JS.Any> {
+pub fn all(array []JS.Promise) Promise<JS.Array, js.promise.JsAny> {
 	mut promise := JS.Promise(JS.Any(voidptr(0)))
 	#promise = Promise.all(array.arr.arr);
 
-	return Promise<Array,Any>{promise}
+	return Promise<JS.Array,JsAny>{promise}
 }
 */

vlib/js/promise/promise_test.js.v

@@ -1,7 +1,9 @@
+module promise
+
 fn test_promise() {
 	// TODO: For some reason compiler errors: "error: unknown function: js.promise.new", fix this
 	/*
-	p := promise.new<int, f64>(fn (resolve_ fn (x int), reject_ fn (x f64)) {
+	p := new<int, f64>(fn (resolve_ fn (x int), reject_ fn (x f64)) {
 		println('Promise code')
 		assert true
 		resolve_(42)