diff --git a/vlib/gg/gg.c.v b/vlib/gg/gg.c.v
index 0808da32bb..0502b022e1 100644
--- a/vlib/gg/gg.c.v
+++ b/vlib/gg/gg.c.v
@@ -34,6 +34,63 @@ pub mut:
 	framebuffer_height int
 }
 
+pub struct Config {
+pub:
+	width         int
+	height        int
+	use_ortho     bool // unused, still here just for backwards compatibility
+	retina        bool
+	resizable     bool
+	user_data     voidptr
+	font_size     int
+	create_window bool
+	// window_user_ptr voidptr
+	window_title      string
+	borderless_window bool
+	always_on_top     bool
+	bg_color          gx.Color
+	init_fn           FNCb   = voidptr(0)
+	frame_fn          FNCb   = voidptr(0)
+	native_frame_fn   FNCb   = voidptr(0)
+	cleanup_fn        FNCb   = voidptr(0)
+	fail_fn           FNFail = voidptr(0)
+	//
+	event_fn FNEvent = voidptr(0)
+	quit_fn  FNEvent = voidptr(0)
+	//
+	keydown_fn FNKeyDown = voidptr(0)
+	keyup_fn   FNKeyUp   = voidptr(0)
+	char_fn    FNChar    = voidptr(0)
+	//
+	move_fn    FNMove    = voidptr(0)
+	click_fn   FNClick   = voidptr(0)
+	unclick_fn FNUnClick = voidptr(0)
+	leave_fn   FNEvent   = voidptr(0)
+	enter_fn   FNEvent   = voidptr(0)
+	resized_fn FNEvent   = voidptr(0)
+	scroll_fn  FNEvent   = voidptr(0)
+	// wait_events       bool // set this to true for UIs, to save power
+	fullscreen    bool
+	scale         f32 = 1.0
+	sample_count  int
+	swap_interval int = 1 // 1 = 60fps, 2 = 30fps etc. The preferred swap interval (ignored on some platforms)
+	// ved needs this
+	// init_text bool
+	font_path             string
+	custom_bold_font_path string
+	ui_mode               bool // refreshes only on events to save CPU usage
+	// font bytes for embedding
+	font_bytes_normal []byte
+	font_bytes_bold   []byte
+	font_bytes_mono   []byte
+	font_bytes_italic []byte
+	native_rendering  bool // Cocoa on macOS/iOS, GDI+ on Windows
+	// drag&drop
+	enable_dragndrop             bool // enable file dropping (drag'n'drop), default is false
+	max_dropped_files            int = 1 // max number of dropped files to process (default: 1)
+	max_dropped_file_path_length int = 2048 // max length in bytes of a dropped UTF-8 file path (default: 2048)
+}
+
 [heap]
 pub struct Context {
 mut:
diff --git a/vlib/gg/gg.js.v b/vlib/gg/gg.js.v
index bf845f5ed6..e0690a1ca5 100644
--- a/vlib/gg/gg.js.v
+++ b/vlib/gg/gg.js.v
@@ -1,5 +1,6 @@
 module gg
 
+import gx
 import js.dom
 
 pub enum DOMEventType {
@@ -55,37 +56,6 @@ pub mut:
 	framebuffer_height int
 }
 
-pub struct Context {
-mut:
-	render_text   bool = true
-	image_cache   []Image
-	needs_refresh bool = true
-	ticks         int
-pub mut:
-	scale         f32 = 1.0
-	width         int
-	height        int
-	window        JS.Window
-	config        Config
-	user_data     voidptr
-	ui_mode       bool
-	frame         u64
-	mbtn_mask     byte
-	mouse_buttons MouseButtons
-	mouse_pos_x   int
-	mouse_pos_y   int
-	mouse_dx      int
-	mouse_dy      int
-	scroll_x      int
-	scroll_y      int
-	//
-	key_modifiers     Modifier // the current key modifiers
-	key_repeat        bool     // whether the pressed key was an autorepeated one
-	pressed_keys      [key_code_max]bool // an array representing all currently pressed keys
-	pressed_keys_edge [key_code_max]bool // true when the previous state of pressed_keys,
-	// *before* the current event was different
-}
-
 pub enum DOMMouseButton {
 	invalid = -1
 	left = 0
@@ -226,3 +196,152 @@ pub enum DOMKeyCode {
 	right_super = 347
 	menu = 348
 }
+
+pub struct Config {
+pub:
+	width         int
+	height        int
+	use_ortho     bool // unused, still here just for backwards compatibility
+	retina        bool
+	resizable     bool
+	user_data     voidptr
+	font_size     int
+	create_window bool
+	// window_user_ptr voidptr
+	window_title      string
+	borderless_window bool
+	always_on_top     bool
+	bg_color          gx.Color
+	init_fn           FNCb   = voidptr(0)
+	frame_fn          FNCb   = voidptr(0)
+	native_frame_fn   FNCb   = voidptr(0)
+	cleanup_fn        FNCb   = voidptr(0)
+	fail_fn           FNFail = voidptr(0)
+	//
+	event_fn FNEvent = voidptr(0)
+	quit_fn  FNEvent = voidptr(0)
+	//
+	keydown_fn FNKeyDown = voidptr(0)
+	keyup_fn   FNKeyUp   = voidptr(0)
+	char_fn    FNChar    = voidptr(0)
+	//
+	move_fn    FNMove    = voidptr(0)
+	click_fn   FNClick   = voidptr(0)
+	unclick_fn FNUnClick = voidptr(0)
+	leave_fn   FNEvent   = voidptr(0)
+	enter_fn   FNEvent   = voidptr(0)
+	resized_fn FNEvent   = voidptr(0)
+	scroll_fn  FNEvent   = voidptr(0)
+	// wait_events       bool // set this to true for UIs, to save power
+	fullscreen    bool
+	scale         f32 = 1.0
+	sample_count  int
+	swap_interval int = 1 // 1 = 60fps, 2 = 30fps etc. The preferred swap interval (ignored on some platforms)
+	// ved needs this
+	// init_text bool
+	font_path             string
+	custom_bold_font_path string
+	ui_mode               bool // refreshes only on events to save CPU usage
+	// font bytes for embedding
+	font_bytes_normal []byte
+	font_bytes_bold   []byte
+	font_bytes_mono   []byte
+	font_bytes_italic []byte
+	native_rendering  bool // Cocoa on macOS/iOS, GDI+ on Windows
+	// drag&drop
+	enable_dragndrop             bool // enable file dropping (drag'n'drop), default is false
+	max_dropped_files            int = 1 // max number of dropped files to process (default: 1)
+	max_dropped_file_path_length int = 2048 // max length in bytes of a dropped UTF-8 file path (default: 2048)
+	context                      JS.CanvasRenderingContext2D
+}
+
+pub struct Context {
+mut:
+	render_text   bool = true
+	image_cache   []Image
+	needs_refresh bool = true
+	ticks         int
+pub mut:
+	scale         f32 = 1.0
+	width         int
+	height        int
+	window        JS.Window    [noinit]
+	config        Config
+	user_data     voidptr
+	ui_mode       bool
+	frame         u64
+	mbtn_mask     byte
+	mouse_buttons MouseButtons
+	mouse_pos_x   int
+	mouse_pos_y   int
+	mouse_dx      int
+	mouse_dy      int
+	scroll_x      int
+	scroll_y      int
+	//
+	key_modifiers     Modifier // the current key modifiers
+	key_repeat        bool     // whether the pressed key was an autorepeated one
+	pressed_keys      [key_code_max]bool // an array representing all currently pressed keys
+	pressed_keys_edge [key_code_max]bool // true when the previous state of pressed_keys,
+	canvas            JS.CanvasRenderingContext2D [noinit]
+	// *before* the current event was different
+}
+
+pub fn new_context(cfg Config) &Context {
+	mut g := &Context{}
+	g.user_data = cfg.user_data
+	g.width = cfg.width
+	g.height = cfg.height
+	g.ui_mode = cfg.ui_mode
+	g.config = cfg
+	if isnil(cfg.user_data) {
+		g.user_data = g
+	}
+	g.window = dom.window()
+	g.canvas = cfg.context
+
+	return g
+}
+
+pub fn (mut ctx Context) run() {
+	gg_animation_frame_fn(mut ctx)
+}
+
+pub fn (mut ctx Context) begin() {
+	// ctx.canvas.beginPath()
+}
+
+pub fn (mut ctx Context) end() {
+	// ctx.canvas.closePath()
+}
+
+pub fn (mut ctx Context) draw_line(x1 f32, y1 f32, x2 f32, y2 f32, c gx.Color) {
+	ctx.canvas.beginPath()
+	ctx.canvas.strokeStyle = c.to_css_string().str
+	ctx.canvas.moveTo(x1, y1)
+	ctx.canvas.lineTo(x2, y2)
+	ctx.canvas.stroke()
+	ctx.canvas.closePath()
+}
+
+pub fn (mut ctx Context) draw_rect(x f32, y f32, w f32, h f32, c gx.Color) {
+	ctx.canvas.beginPath()
+	ctx.canvas.fillStyle = c.to_css_string().str
+	ctx.canvas.fillRect(x, y, w, h)
+	ctx.canvas.closePath()
+}
+
+fn gg_animation_frame_fn(mut g Context) {
+	g.frame++
+	g.canvas.clearRect(0, 0, g.config.width, g.config.height)
+	// todo(playXE): handle events
+	if !isnil(g.config.frame_fn) {
+		f := g.config.frame_fn
+		f(g.user_data)
+		g.needs_refresh = false
+	}
+
+	g.window.requestAnimationFrame(fn [mut g] (time JS.Number) {
+		gg_animation_frame_fn(mut g)
+	})
+}
diff --git a/vlib/gg/gg.v b/vlib/gg/gg.v
index 9283ec1c47..3b1f154f2c 100644
--- a/vlib/gg/gg.v
+++ b/vlib/gg/gg.v
@@ -23,63 +23,6 @@ pub type FNUnClick = fn (x f32, y f32, button MouseButton, data voidptr)
 
 pub type FNChar = fn (c u32, data voidptr)
 
-pub struct Config {
-pub:
-	width         int
-	height        int
-	use_ortho     bool // unused, still here just for backwards compatibility
-	retina        bool
-	resizable     bool
-	user_data     voidptr
-	font_size     int
-	create_window bool
-	// window_user_ptr voidptr
-	window_title      string
-	borderless_window bool
-	always_on_top     bool
-	bg_color          gx.Color
-	init_fn           FNCb   = voidptr(0)
-	frame_fn          FNCb   = voidptr(0)
-	native_frame_fn   FNCb   = voidptr(0)
-	cleanup_fn        FNCb   = voidptr(0)
-	fail_fn           FNFail = voidptr(0)
-	//
-	event_fn FNEvent = voidptr(0)
-	quit_fn  FNEvent = voidptr(0)
-	//
-	keydown_fn FNKeyDown = voidptr(0)
-	keyup_fn   FNKeyUp   = voidptr(0)
-	char_fn    FNChar    = voidptr(0)
-	//
-	move_fn    FNMove    = voidptr(0)
-	click_fn   FNClick   = voidptr(0)
-	unclick_fn FNUnClick = voidptr(0)
-	leave_fn   FNEvent   = voidptr(0)
-	enter_fn   FNEvent   = voidptr(0)
-	resized_fn FNEvent   = voidptr(0)
-	scroll_fn  FNEvent   = voidptr(0)
-	// wait_events       bool // set this to true for UIs, to save power
-	fullscreen    bool
-	scale         f32 = 1.0
-	sample_count  int
-	swap_interval int = 1 // 1 = 60fps, 2 = 30fps etc. The preferred swap interval (ignored on some platforms)
-	// ved needs this
-	// init_text bool
-	font_path             string
-	custom_bold_font_path string
-	ui_mode               bool // refreshes only on events to save CPU usage
-	// font bytes for embedding
-	font_bytes_normal []byte
-	font_bytes_bold   []byte
-	font_bytes_mono   []byte
-	font_bytes_italic []byte
-	native_rendering  bool // Cocoa on macOS/iOS, GDI+ on Windows
-	// drag&drop
-	enable_dragndrop             bool // enable file dropping (drag'n'drop), default is false
-	max_dropped_files            int = 1 // max number of dropped files to process (default: 1)
-	max_dropped_file_path_length int = 2048 // max length in bytes of a dropped UTF-8 file path (default: 2048)
-}
-
 pub struct PenConfig {
 	color     gx.Color
 	line_type PenLineType = .solid
diff --git a/vlib/gg/text_rendering.c.v b/vlib/gg/text_rendering.c.v
index 3e6116ea3c..1a2a3b7e41 100644
--- a/vlib/gg/text_rendering.c.v
+++ b/vlib/gg/text_rendering.c.v
@@ -228,3 +228,113 @@ pub fn (ctx &Context) text_size(s string) (int, int) {
 	ctx.ft.fons.text_bounds(0, 0, s, &buf[0])
 	return int((buf[2] - buf[0]) / ctx.scale), int((buf[3] - buf[1]) / ctx.scale)
 }
+
+pub fn system_font_path() string {
+	env_font := os.getenv('VUI_FONT')
+	if env_font != '' && os.exists(env_font) {
+		return env_font
+	}
+	$if windows {
+		debug_font_println('Using font "C:\\Windows\\Fonts\\arial.ttf"')
+		return 'C:\\Windows\\Fonts\\arial.ttf'
+	}
+	$if macos {
+		fonts := ['/System/Library/Fonts/SFNS.ttf', '/System/Library/Fonts/SFNSText.ttf',
+			'/Library/Fonts/Arial.ttf']
+		for font in fonts {
+			if os.is_file(font) {
+				debug_font_println('Using font "$font"')
+				return font
+			}
+		}
+	}
+	$if android {
+		xml_files := ['/system/etc/system_fonts.xml', '/system/etc/fonts.xml',
+			'/etc/system_fonts.xml', '/etc/fonts.xml', '/data/fonts/fonts.xml',
+			'/etc/fallback_fonts.xml']
+		font_locations := ['/system/fonts', '/data/fonts']
+		for xml_file in xml_files {
+			if os.is_file(xml_file) && os.is_readable(xml_file) {
+				xml := os.read_file(xml_file) or { continue }
+				lines := xml.split('\n')
+				mut candidate_font := ''
+				for line in lines {
+					if line.contains('<font') {
+						candidate_font = line.all_after('>').all_before('<').trim(' \n\t\r')
+						if candidate_font.contains('.ttf') {
+							for location in font_locations {
+								candidate_path := os.join_path(location, candidate_font)
+								if os.is_file(candidate_path) && os.is_readable(candidate_path) {
+									debug_font_println('Using font "$candidate_path"')
+									return candidate_path
+								}
+							}
+						}
+					}
+				}
+			}
+		}
+	}
+	mut fm := os.execute("fc-match --format='%{file}\n' -s")
+	if fm.exit_code == 0 {
+		lines := fm.output.split('\n')
+		for l in lines {
+			if !l.contains('.ttc') {
+				debug_font_println('Using font "$l"')
+				return l
+			}
+		}
+	} else {
+		panic('fc-match failed to fetch system font')
+	}
+	panic('failed to init the font')
+}
+
+fn get_font_path_variant(font_path string, variant FontVariant) string {
+	// TODO: find some way to make this shorter and more eye-pleasant
+	// NotoSans, LiberationSans, DejaVuSans, Arial and SFNS should work
+	mut file := os.file_name(font_path)
+	mut fpath := font_path.replace(file, '')
+	file = file.replace('.ttf', '')
+
+	match variant {
+		.normal {}
+		.bold {
+			if fpath.ends_with('-Regular') {
+				file = file.replace('-Regular', '-Bold')
+			} else if file.starts_with('DejaVuSans') {
+				file += '-Bold'
+			} else if file.to_lower().starts_with('arial') {
+				file += 'bd'
+			} else {
+				file += '-bold'
+			}
+			$if macos {
+				if os.exists('SFNS-bold') {
+					file = 'SFNS-bold'
+				}
+			}
+		}
+		.italic {
+			if file.ends_with('-Regular') {
+				file = file.replace('-Regular', '-Italic')
+			} else if file.starts_with('DejaVuSans') {
+				file += '-Oblique'
+			} else if file.to_lower().starts_with('arial') {
+				file += 'i'
+			} else {
+				file += 'Italic'
+			}
+		}
+		.mono {
+			if !file.ends_with('Mono-Regular') && file.ends_with('-Regular') {
+				file = file.replace('-Regular', 'Mono-Regular')
+			} else if file.to_lower().starts_with('arial') {
+				// Arial has no mono variant
+			} else {
+				file += 'Mono'
+			}
+		}
+	}
+	return fpath + file + '.ttf'
+}
diff --git a/vlib/gg/text_rendering.v b/vlib/gg/text_rendering.v
index 77a1a0e201..80ff0dfff8 100644
--- a/vlib/gg/text_rendering.v
+++ b/vlib/gg/text_rendering.v
@@ -2,7 +2,6 @@
 // Use of this source code is governed by an MIT license that can be found in the LICENSE file.
 module gg
 
-import os
 import gx
 
 enum FontVariant {
@@ -30,116 +29,6 @@ struct StringToRender {
 	cfg  gx.TextCfg
 }
 
-pub fn system_font_path() string {
-	env_font := os.getenv('VUI_FONT')
-	if env_font != '' && os.exists(env_font) {
-		return env_font
-	}
-	$if windows {
-		debug_font_println('Using font "C:\\Windows\\Fonts\\arial.ttf"')
-		return 'C:\\Windows\\Fonts\\arial.ttf'
-	}
-	$if macos {
-		fonts := ['/System/Library/Fonts/SFNS.ttf', '/System/Library/Fonts/SFNSText.ttf',
-			'/Library/Fonts/Arial.ttf']
-		for font in fonts {
-			if os.is_file(font) {
-				debug_font_println('Using font "$font"')
-				return font
-			}
-		}
-	}
-	$if android {
-		xml_files := ['/system/etc/system_fonts.xml', '/system/etc/fonts.xml',
-			'/etc/system_fonts.xml', '/etc/fonts.xml', '/data/fonts/fonts.xml',
-			'/etc/fallback_fonts.xml']
-		font_locations := ['/system/fonts', '/data/fonts']
-		for xml_file in xml_files {
-			if os.is_file(xml_file) && os.is_readable(xml_file) {
-				xml := os.read_file(xml_file) or { continue }
-				lines := xml.split('\n')
-				mut candidate_font := ''
-				for line in lines {
-					if line.contains('<font') {
-						candidate_font = line.all_after('>').all_before('<').trim(' \n\t\r')
-						if candidate_font.contains('.ttf') {
-							for location in font_locations {
-								candidate_path := os.join_path(location, candidate_font)
-								if os.is_file(candidate_path) && os.is_readable(candidate_path) {
-									debug_font_println('Using font "$candidate_path"')
-									return candidate_path
-								}
-							}
-						}
-					}
-				}
-			}
-		}
-	}
-	mut fm := os.execute("fc-match --format='%{file}\n' -s")
-	if fm.exit_code == 0 {
-		lines := fm.output.split('\n')
-		for l in lines {
-			if !l.contains('.ttc') {
-				debug_font_println('Using font "$l"')
-				return l
-			}
-		}
-	} else {
-		panic('fc-match failed to fetch system font')
-	}
-	panic('failed to init the font')
-}
-
-fn get_font_path_variant(font_path string, variant FontVariant) string {
-	// TODO: find some way to make this shorter and more eye-pleasant
-	// NotoSans, LiberationSans, DejaVuSans, Arial and SFNS should work
-	mut file := os.file_name(font_path)
-	mut fpath := font_path.replace(file, '')
-	file = file.replace('.ttf', '')
-
-	match variant {
-		.normal {}
-		.bold {
-			if fpath.ends_with('-Regular') {
-				file = file.replace('-Regular', '-Bold')
-			} else if file.starts_with('DejaVuSans') {
-				file += '-Bold'
-			} else if file.to_lower().starts_with('arial') {
-				file += 'bd'
-			} else {
-				file += '-bold'
-			}
-			$if macos {
-				if os.exists('SFNS-bold') {
-					file = 'SFNS-bold'
-				}
-			}
-		}
-		.italic {
-			if file.ends_with('-Regular') {
-				file = file.replace('-Regular', '-Italic')
-			} else if file.starts_with('DejaVuSans') {
-				file += '-Oblique'
-			} else if file.to_lower().starts_with('arial') {
-				file += 'i'
-			} else {
-				file += 'Italic'
-			}
-		}
-		.mono {
-			if !file.ends_with('Mono-Regular') && file.ends_with('-Regular') {
-				file = file.replace('-Regular', 'Mono-Regular')
-			} else if file.to_lower().starts_with('arial') {
-				// Arial has no mono variant
-			} else {
-				file += 'Mono'
-			}
-		}
-	}
-	return fpath + file + '.ttf'
-}
-
 [if debug_font ?]
 fn debug_font_println(s string) {
 	println(s)
diff --git a/vlib/gx/color.v b/vlib/gx/color.v
index aaec4016e5..bdb551ec91 100644
--- a/vlib/gx/color.v
+++ b/vlib/gx/color.v
@@ -232,3 +232,7 @@ const (
 pub fn color_from_string(s string) Color {
 	return gx.string_colors[s]
 }
+
+pub fn (c Color) to_css_string() string {
+	return 'rgb($c.r,$c.g,$c.b)'
+}
diff --git a/vlib/gx/text.js.v b/vlib/gx/text.js.v
new file mode 100644
index 0000000000..c477a72eee
--- /dev/null
+++ b/vlib/gx/text.js.v
@@ -0,0 +1,14 @@
+module gx
+
+pub enum HorizontalAlign {
+	left
+	center
+	right
+}
+
+pub enum VerticalAlign {
+	top
+	middle
+	bottom
+	baseline
+}
diff --git a/vlib/js/dom/dom.js.v b/vlib/js/dom/dom.js.v
index 2ae042c092..a2f2c9e154 100644
--- a/vlib/js/dom/dom.js.v
+++ b/vlib/js/dom/dom.js.v
@@ -451,7 +451,7 @@ pub interface JS.CanvasRenderingContext2D {
 	getLineDash() JS.Array
 	setLineDash(segments JS.Array)
 	clearRect(x JS.Number, y JS.Number, w JS.Number, h JS.Number)
-	fillRect(x JS.Number, y JS.Number, w JS.null, h JS.Number)
+	fillRect(x JS.Number, y JS.Number, w JS.Number, h JS.Number)
 	strokeRect(x JS.Number, y JS.Number, w JS.Number, h JS.Number)
 	getTransformt() JS.DOMMatrix
 	resetTransform()
diff --git a/vlib/os/environment.js.v b/vlib/os/environment.js.v
index 3324844636..67ae5bd345 100644
--- a/vlib/os/environment.js.v
+++ b/vlib/os/environment.js.v
@@ -3,6 +3,7 @@ module os
 $if js_node {
 	#global.$ENV = $process.env
 } $else {
+	#const global = $global;
 	#global.$ENV = {}
 }
 
diff --git a/vlib/os/file.js.v b/vlib/os/file.js.v
index 61aa7b940d..273727b51a 100644
--- a/vlib/os/file.js.v
+++ b/vlib/os/file.js.v
@@ -7,8 +7,9 @@ pub mut:
 	is_opened bool
 }
 
-#const $buffer = require('buffer');
-
+$if !js_browser {
+	#const $buffer = require('buffer');
+}
 // todo(playX):   __as_cast is broken here
 /*
 pub struct ErrFileNotOpened {
diff --git a/vlib/os/os.js.v b/vlib/os/os.js.v
index e9ae812f01..fff2f90a7a 100644
--- a/vlib/os/os.js.v
+++ b/vlib/os/os.js.v
@@ -1,8 +1,10 @@
 module os
 
-#const $fs = require('fs');
-#const $path = require('path');
-#const tty = require('tty')
+$if js_node {
+	#const $fs = require('fs');
+	#const $path = require('path');
+	#const tty = require('tty')
+}
 
 pub const (
 	path_delimiter = '/'
diff --git a/vlib/os/process.js.v b/vlib/os/process.js.v
index b5ae53efdd..cae2c6646a 100644
--- a/vlib/os/process.js.v
+++ b/vlib/os/process.js.v
@@ -1,6 +1,8 @@
 module os
 
-#const $child_process = require('child_process')
+$if js_node {
+	#const $child_process = require('child_process')
+}
 
 // new_process - create a new process descriptor
 // NB: new does NOT start the new process.
diff --git a/vlib/v/checker/checker.v b/vlib/v/checker/checker.v
index 3e1e40c31c..1ec850bc85 100644
--- a/vlib/v/checker/checker.v
+++ b/vlib/v/checker/checker.v
@@ -827,7 +827,14 @@ pub fn (mut c Checker) struct_init(mut node ast.StructInit) ast.Type {
 				}
 				// Do not allow empty uninitialized interfaces
 				sym := c.table.sym(field.typ)
-				if sym.kind == .interface_ {
+				mut has_noinit := false
+				for attr in field.attrs {
+					if attr.name == 'noinit' {
+						has_noinit = true
+						break
+					}
+				}
+				if sym.kind == .interface_ && (!has_noinit && sym.language != .js) {
 					// TODO: should be an error instead, but first `ui` needs updating.
 					c.note('interface field `${type_sym.name}.$field.name` must be initialized',
 						node.pos)
diff --git a/vlib/v/gen/js/js.v b/vlib/v/gen/js/js.v
index c756855f4f..0a90fe910d 100644
--- a/vlib/v/gen/js/js.v
+++ b/vlib/v/gen/js/js.v
@@ -461,10 +461,11 @@ pub fn (mut g JsGen) init() {
 		g.definitions.writeln('const \$process = {')
 		g.definitions.writeln('  arch: "js",')
 		if g.pref.backend == .js_freestanding {
-			g.definitions.writeln('  platform: "freestanding"')
+			g.definitions.writeln('  platform: "freestanding",')
 		} else {
-			g.definitions.writeln('  platform: "browser"')
+			g.definitions.writeln('  platform: "browser",')
 		}
+		g.definitions.writeln('  cwd: function() { return "" }')
 		g.definitions.writeln('}')
 
 		g.definitions.writeln('const \$os = {')
@@ -3263,12 +3264,8 @@ fn (mut g JsGen) gen_struct_init(it ast.StructInit) {
 		g.writeln('return tmp')
 		g.dec_indent()
 		g.writeln('})()')
-	} else {
-		if type_sym.kind == .struct_ && type_sym.language == .js {
-			g.writeln('{')
-		} else {
-			g.writeln('new ${g.js_name(name)}({')
-		}
+	} else if type_sym.kind == .struct_ && type_sym.language == .js {
+		g.writeln('{')
 		g.inc_indent()
 		for i, field in it.fields {
 			if field.name.len != 0 {
@@ -3281,11 +3278,26 @@ fn (mut g JsGen) gen_struct_init(it ast.StructInit) {
 			g.writeln('')
 		}
 		g.dec_indent()
-		if type_sym.kind == .struct_ && type_sym.language == .js {
-			g.writeln('}')
-		} else {
-			g.writeln('})')
+
+		g.writeln('}')
+	} else {
+		g.writeln('(function() {')
+		g.inc_indent()
+		tmp := g.new_tmp_var()
+		g.writeln('let $tmp = new ${g.js_name(name)}({});')
+
+		for field in it.fields {
+			if field.name.len != 0 {
+				g.write('${tmp}.$field.name = ')
+				g.expr(field.expr)
+			}
+			g.write(';')
+
+			g.writeln('')
 		}
+		g.writeln('return $tmp;')
+		g.dec_indent()
+		g.writeln('})()')
 	}
 }
 
@@ -3385,6 +3397,18 @@ fn (mut g JsGen) gen_type_cast_expr(it ast.CastExpr) {
 		return
 	}
 
+	if (from_type_sym.name == 'Any' && from_type_sym.language == .js)
+		|| from_type_sym.name == 'JS.Any' {
+		if it.typ.is_ptr() {
+			g.write('new \$ref(')
+		}
+		g.expr(it.expr)
+		if it.typ.is_ptr() {
+			g.write(')')
+		}
+		return
+	}
+
 	// Skip cast if type is the same as the parrent caster
 	tsym := to_type_sym
 	if tsym.kind == .sum_type {