js: time module: implement utc,now,local (#11138)

vlib/time/time.c.v

@@ -119,3 +119,7 @@ fn convert_ctime(t C.tm, microsecond int) Time {
 		unix: make_unix_time(t)
 	}
 }
+
+pub const (
+	infinite = Duration(C.INT64_MAX)
+)

vlib/time/time.js.v

@@ -0,0 +1,38 @@
+module time
+
+pub fn now() Time {
+	mut res := Time{}
+	#let date = new Date()
+	#res.year.val = date.getFullYear()
+	#res.month.val = date.getMonth()
+	#res.day.val = date.getDay()
+	#res.hour.val = date.getHours()
+	#res.minute.val = date.getMinutes()
+	#res.second.val = date.getSeconds()
+	#res.microsecond.val = date.getMilliseconds() * 1000
+	#res.unix.val = (date.getTime() / 1000).toFixed(0)
+
+	return res
+}
+
+pub fn utc() Time {
+	mut res := Time{}
+	#let date = new Date()
+	#res.year.val = date.getUTCFullYear()
+	#res.month.val = date.getUTCMonth()
+	#res.day.val = date.getUTCDay()
+	#res.hour.val = date.getUTCHours()
+	#res.minute.val = date.getUTCMinutes()
+	#res.second.val = date.getUTCSeconds()
+	#res.microsecond.val = date.getUTCMilliseconds() * 1000
+	#res.unix.val = (date.getTime() / 1000).toFixed(0)
+
+	return res
+}
+
+/// Returns local time
+pub fn (t Time) local() Time {
+	// TODO: Does this actually correct? JS clock is always set to timezone or no?
+	// if it is not we should try to use Intl for getting local time.
+	return t
+}

vlib/time/time.v

@@ -267,7 +267,6 @@ pub const (
 	second      = Duration(1000 * millisecond)
 	minute      = Duration(60 * second)
 	hour        = Duration(60 * minute)
-	infinite    = Duration(C.INT64_MAX)
 )
 
 // nanoseconds returns the duration as an integer number of nanoseconds.

vlib/time/time_js.js.v

@@ -0,0 +1,31 @@
+module time
+
+#var $timeOff = 0;
+#var $seen = 0
+#function $sys_mono_new_Date() {
+#var t = Date.now()
+#if (t < seen)
+#timeOff += (seen - t)
+#
+#seen = t
+#return t + timeOff
+#}
+
+pub fn sys_mono_now() u64 {
+	$if js_browser {
+		mut res := u64(0)
+		#res = new u64(window.performance.now() * 1000000)
+
+		return res
+	} $else $if js_node {
+		mut res := u64(0)
+		#res.val = Number($process.hrtime.bigint())
+
+		return res
+	} $else {
+		mut res := u64(0)
+		#res = new u64($sys_mono_new_Date() * 1000000)
+
+		return res
+	}
+}

vlib/v/gen/js/js.v

@@ -327,6 +327,7 @@ pub fn (mut g JsGen) init() {
 		g.definitions.writeln('const \$os = require("os");')
 		g.definitions.writeln('const \$process = process;')
 	}
+	g.definitions.writeln('function alias(value) { return value; } ')
 }
 
 pub fn (g JsGen) hashes() string {
@@ -406,13 +407,41 @@ fn (mut g JsGen) get_alias(name string) string {
 
 fn (mut g JsGen) js_name(name_ string) string {
 	mut is_js := false
+	is_overload := ['+', '-', '*', '/', '==', '<', '>']
 	mut name := name_
 	if name.starts_with('JS.') {
 		name = name[3..]
 		is_js = true
 	}
 	ns := get_ns(name)
-	name = if g.ns == 0 {
+	name = if name in is_overload {
+		match name {
+			'+' {
+				'\$add'
+			}
+			'-' {
+				'\$sub'
+			}
+			'/' {
+				'\$div'
+			}
+			'*' {
+				'\$mul'
+			}
+			'==' {
+				'eq'
+			}
+			'>' {
+				'\$gt'
+			}
+			'<' {
+				'\$lt'
+			}
+			else {
+				''
+			}
+		}
+	} else if g.ns == 0 {
 		name
 	} else if ns == g.ns.name {
 		name.split('.').last()