jsgen: fixes and improvements

vlib/builtin/js/builtin.v

@@ -4,13 +4,40 @@
 
 module builtin
 
-fn JS.console.log(arg ...string)
-fn JS.process.stdout.write(arg string)
-
 pub fn println(s any) {
 	JS.console.log(s)
 }
 
 pub fn print(s any) {
-	JS.process.stdout.write(s)
+	// TODO
+	// $if js.node {
+		JS.process.stdout.write(s)
+	// } $else {
+	//	panic('Cannot `print` in a browser, use `println` instead')
+	// }
+}
+
+pub fn eprintln(s any) {
+	JS.console.error(s)
+}
+
+pub fn eprint(s any) {
+	// TODO
+	// $if js.node {
+		JS.process.stderr.write(s)
+	// } $else {
+	//	panic('Cannot `eprint` in a browser, use `eprintln` instead')
+	// }
+}
+
+// Exits the process in node, and halts execution in the browser
+// because `process.exit` is undefined. Workaround for not having
+// a 'real' way to exit in the browser.
+pub fn exit(c int) {
+	JS.process.exit(c)
+}
+
+pub fn panic(s string) {
+	eprintln('V panic: $s')
+	exit(1)
 }

vlib/builtin/js/jsfns.js.v

@@ -0,0 +1,65 @@
+// Copyright (c) 2019-2020 Alexander Medvednikov. All rights reserved.
+// Use of this source code is governed by an MIT license
+// that can be found in the LICENSE file.
+
+// This file contains JS functions present in both node and the browser.
+// They have been ported from their TypeScript definitions.
+
+module builtin
+
+// Top level functions
+fn JS.eval(string) any
+fn JS.parseInt(string, f64) f64
+fn JS.parseFloat(string) f64
+fn JS.isNaN(f64) bool
+fn JS.isFinite(f64) bool
+fn JS.decodeURI(string) string
+fn JS.decodeURIComponent(string) string
+fn JS.encodeURI(string) string
+type EncodeURIComponentArg = string | f64 | bool
+fn JS.encodeURIComponent(EncodeURIComponentArg) string
+fn JS.escape(string) string
+fn JS.unescape(string) string
+
+// console
+fn JS.console.assert(bool, ...any)
+fn JS.console.clear()
+fn JS.console.count(string)
+fn JS.console.countReset(string)
+fn JS.console.debug(...any)
+fn JS.console.dir(any, any)
+fn JS.console.dirxml(...any)
+fn JS.console.error(...any)
+fn JS.console.exception(string, ...any)
+fn JS.console.group(...any)
+fn JS.console.groupCollapsed(...any)
+fn JS.console.groupEnd()
+fn JS.console.info(...any)
+fn JS.console.log(...any)
+fn JS.console.table(any, []string)
+fn JS.console.time(string)
+fn JS.console.timeEnd(string)
+fn JS.console.timeLog(string, ...any)
+fn JS.console.timeStamp(string)
+fn JS.console.trace(...any)
+fn JS.console.warn(...any)
+
+// Math
+fn JS.Math.abs(f64) f64
+fn JS.Math.acos(f64) f64
+fn JS.Math.asin(f64) f64
+fn JS.Math.atan(f64) f64
+fn JS.Math.atan2(f64, f64) f64
+fn JS.Math.ceil(f64) f64
+fn JS.Math.cos(f64) f64
+fn JS.Math.exp(f64) f64
+fn JS.Math.floor(f64) f64
+fn JS.Math.log(f64) f64
+fn JS.Math.max(...f64) f64
+fn JS.Math.min(...f64) f64
+fn JS.Math.pow(f64, f64) f64
+fn JS.Math.random() f64
+fn JS.Math.round(f64) f64
+fn JS.Math.sin(f64) f64
+fn JS.Math.sqrt(f64) f64
+fn JS.Math.tan(f64) f64

vlib/builtin/js/jsfns_browser.js.v

@@ -0,0 +1,53 @@
+// Copyright (c) 2019-2020 Alexander Medvednikov. All rights reserved.
+// Use of this source code is governed by an MIT license
+// that can be found in the LICENSE file.
+
+// This file contains JS functions only present in the browser.
+// They have been ported from their TypeScript definitions.
+
+module builtin
+
+// Window
+fn JS.atob(string) string
+fn JS.btoa(string) string
+fn JS.clearInterval(int)
+fn JS.clearTimeout(int)
+
+// fn JS.createImageBitmap(ImageBitmapSource, ImageBitmapOptions) Promise<ImageBitmap>
+// fn JS.createImageBitmap(ImageBitmapSource, int, int, int, int, ImageBitmapOptions) Promise<ImageBitmap>
+
+// TODO: js async attribute
+// [js_async]
+// fn JS.fetch(RequestInfo, RequestInit) Promise<Response>
+fn JS.queueMicrotask(fn())
+fn JS.setInterval(any, int, ...any) int
+fn JS.setTimeout(any, int, ...any) int
+
+fn JS.alert(any)
+fn JS.blur()
+fn JS.captureEvents()
+fn JS.close()
+fn JS.confirm(string) bool
+// fn JS.departFocus(NavigationReason, FocusNavigationOrigin)
+fn JS.focus()
+// fn JS.getComputedStyle(Element, string | null) CSSStyleDeclaration
+// fn JS.getMatchedCSSRules(Element, string | null) CSSRuleList
+// fn JS.getSelection() Selection | null
+// fn JS.matchMedia(string) MediaQueryList
+fn JS.moveBy(int, int)
+fn JS.moveTo(int, int)
+fn JS.msWriteProfilerMark(string)
+// fn JS.open(string, string, string, bool) ?Window
+// fn JS.postMessage(any, string, []Transferable)
+fn JS.print()
+fn JS.prompt(string, string) ?string
+fn JS.releaseEvents()
+fn JS.resizeBy(int, int)
+fn JS.resizeTo(int, int)
+// fn JS.scroll(ScrollToOptions)
+fn JS.scroll(int, int)
+//fn JS.scrollBy(ScrollToOptions)
+fn JS.scrollBy(int, int)
+// fn JS.scrollTo(ScrollToOptions)
+fn JS.scrollTo(int, int)
+fn JS.stop()

vlib/builtin/js/jsfns_node.js.v

@@ -0,0 +1,14 @@
+// Copyright (c) 2019-2020 Alexander Medvednikov. All rights reserved.
+// Use of this source code is governed by an MIT license
+// that can be found in the LICENSE file.
+
+// This file contains JS functions only present in node.js.
+// They have been ported from their TypeScript definitions.
+
+module builtin
+
+fn JS.process.exit(int)
+fn JS.process.stdout.write(string) bool
+fn JS.process.stdout.writeln(string) bool
+fn JS.process.stderr.write(string) bool
+fn JS.process.stderr.writeln(string) bool