fix: prevent rollup from optimizing "void 0" to "undefined"

(only caused headaches)

.github/workflows/tagged-release.yml

@@ -11,27 +11,24 @@ jobs:
     runs-on: "ubuntu-latest"
 
     steps:
+      - name: Clone repository
+        uses: actions/checkout@v3
       - name: Setup Java
         uses: actions/setup-java@v3
         with:
           distribution: 'adopt'
-          java-version: '11'
+          java-version: '17'
       - name: Setup Gradle
         uses: gradle/gradle-build-action@v2
-      - name: Clone repository
-        uses: GuillaumeFalourd/clone-github-repo-action@main
         with:
-          branch: 'master'
-          owner: 'TopchetoEU'
-          repository: 'java-jscript'
+          cache-disabled: true
+          gradle-version: "8.10"
       - name: Build
-        run: |
-          cd java-jscript; gradle build
-
-      - uses: "marvinpinto/action-automatic-releases@latest"
+        run: gradle build
+      - name: Create release
+        uses: "https://gitea.com/actions/gitea-release-action@main"
         with:
-          repo_token: "${{ secrets.GITHUB_TOKEN }}"
-          prerelease: false
+          # api_key: "${{secrets.TOKEN}}"
           files: |
-            java-jscript/LICENSE
-            java-jscript/build/libs/*.jar
+            LICENSE
+            build/libs/*.jar

.gitignore

@@ -16,3 +16,4 @@
 
 !/package.json
 !/rollup.config.js
+!/tsconfig.json

build.gradle

@@ -22,6 +22,8 @@ node {
 }
 
 task compileEnv(type: NpmTask) {
+	dependsOn npmInstall;
+
 	inputs.files('rollup.config.js');
 	inputs.dir('src/lib/libs');
 	outputs.files("build/js/env.js");
@@ -30,6 +32,8 @@ task compileEnv(type: NpmTask) {
 	args = ['run', 'build-env'];
 }
 task compileTypescript(type: NpmTask) {
+	dependsOn npmInstall;
+
 	inputs.files('rollup.config.js');
 	inputs.dir('src/lib/transpiler');
 	outputs.files("build/js/ts.js");

gradle.properties

@@ -1,4 +1,4 @@
 project_group = me.topchetoeu
 project_name = jscript
-project_version = 0.9.41-beta
+project_version = 0.10.0-beta
 main_class = me.topchetoeu.jscript.repl.SimpleRepl

rollup.config.js

@@ -7,7 +7,7 @@ const nodeResolve = require("@rollup/plugin-node-resolve");
 const json = require("@rollup/plugin-json");
 const { resolve } = require("path");
 
-const shouldMinify = () => false;
+const shouldMinify = () => true;
 const shouldEmitSourcemaps = () => true;
 const shouldPolyfill = () => !!process.env.POLYFILLS;
 
@@ -99,6 +99,7 @@ const construct = (input, output) => defineConfig({
 		shouldMinify() && terser({
 			sourceMap: shouldEmitSourcemaps(),
 			keep_classnames: true,
+			keep_fnames: true,
 		}),
 	],
 	output: {

src/lib/libs/_entry.ts

@@ -1,21 +1,25 @@
 import { object, setGlobalPrototypes, target } from "./primordials.ts";
-import { Error, RangeError, SyntaxError, TypeError } from "./errors.ts";
-import { Boolean } from "./boolean.ts";
-import { Function } from "./function.ts";
-import { Number } from "./number.ts";
-import { Object } from "./object.ts";
-import { String } from "./string.ts";
-import { Symbol } from "./symbol.ts";
-import { Array } from "./array.ts";
-import { Map, WeakMap } from "./map.ts";
-import { RegExp } from "./regex.ts";
-import { Date } from "./date.ts";
-import { Math as _Math } from "./math.ts";
-import { Set, WeakSet } from "./set.ts";
-import { JSON } from "./json.ts";
-import { console } from "./console.ts";
+import { Error, RangeError, SyntaxError, TypeError } from "./values/errors.ts";
+import { Boolean } from "./values/boolean.ts";
+import { Function } from "./values/function.ts";
+import { Number } from "./values/number.ts";
+import { Object } from "./values/object.ts";
+import { String } from "./values/string.ts";
+import { Symbol } from "./values/symbol.ts";
+import { Array } from "./values/array.ts";
+import { Map, WeakMap } from "./classes/map.ts";
+import { RegExp } from "./values/regex.ts";
+import { Date } from "./classes/date.ts";
+import { Math as _Math } from "./namespaces/math.ts";
+import { Set, WeakSet } from "./classes/set.ts";
+import { JSON } from "./namespaces/json.ts";
+import { console } from "./namespaces/console.ts";
 import { encodeURI, encodeURIComponent } from "./url.ts";
-import { Promise } from "./promise.ts";
+import { Promise } from "./classes/promise.ts";
+import { ArrayBuffer } from "./arrays/ArrayBuffer.ts";
+import { Uint8Array } from "./arrays/Uint8Array.ts";
+import { Int32Array } from "./arrays/Int32Array.ts";
+import { TypedArray } from "./arrays/TypedArray.ts";
 
 declare global {
 	function print(...args: any[]): void;
@@ -46,6 +50,11 @@ target.RangeError = RangeError;
 target.SyntaxError = SyntaxError;
 target.TypeError = TypeError;
 
+fixup(TypedArray);
+target.ArrayBuffer = fixup(ArrayBuffer);
+target.Uint8Array = Uint8Array;
+target.Int32Array = Int32Array;
+
 target.Map = fixup(Map);
 target.WeakMap = fixup(WeakMap);
 target.Set = fixup(Set);
@@ -56,7 +65,6 @@ target.Promise = fixup(Promise);
 target.Math = object.setPrototype(_Math, Object.prototype);
 target.JSON = object.setPrototype(JSON, Object.prototype);
 target.console = object.setPrototype(console, Object.prototype);
-target.TYPED_ARRAY_SUPPORT = false;
 
 target.parseInt = Number.parseInt;
 target.parseFloat = Number.parseFloat;
@@ -77,5 +85,7 @@ setGlobalPrototypes({
 	syntax: SyntaxError.prototype,
 	range: RangeError.prototype,
 	type: TypeError.prototype,
+	uint8: Uint8Array.prototype,
+	int32: Int32Array.prototype,
 	regex: RegExp,
 });

src/lib/libs/arrays/ArrayBuffer.ts

@@ -0,0 +1,30 @@
+import { buffer, type InternalBuffer, map, symbol } from "../primordials.ts";
+
+export const abs = new map(true);
+export const abKey: unique symbol = symbol.getSymbol("ArrayBuffer.impl") as any;
+
+export class ArrayBuffer {
+	public [abKey]!: InternalBuffer;
+
+	public get byteLength() {
+		return this[abKey].length;
+	}
+	public get byteOffset() {
+		return 0;
+	}
+
+	public constructor(val: unknown) {
+		if (buffer.isBuff(val)) this[abKey] = val;
+		else this[abKey] = buffer.buff(Number(val));
+	}
+}
+
+export function getAB(buff: InternalBuffer): ArrayBuffer {
+	let res = abs.get(buff);
+	if (res == null) {
+		res = new ArrayBuffer(buff);
+		abs.set(buff, res);
+	}
+
+	return res;
+}

src/lib/libs/arrays/Int32Array.ts

@@ -0,0 +1,25 @@
+import { buffer } from "../primordials.ts";
+import { abstractIgnore, TypedArray, typedArrayFuncs } from "./TypedArray.ts";
+
+const factory = buffer.int32;
+const funcs = typedArrayFuncs(4, factory);
+
+export class Int32Array extends TypedArray {
+	public subarray(this: number[], start?: number, end?: number) {
+		return funcs.subarray(this, start, end);
+	}
+	public slice(this: any[], start?: number, end?: number) {
+		return funcs.slice(this, start, end);
+	}
+	public map(this: any[], cb: (val: number, i: number, self: any) => number, self?: any) {
+		return funcs.map(this, cb, self);
+	}
+	public filter(this: any[], cb: (val: number, i: number, self: any) => boolean, self?: any) {
+		return funcs.filter(this, cb, self);
+	}
+
+	public constructor(obj: any, start?: number, end?: number) {
+		super(abstractIgnore);
+		return funcs.construct(obj, start, end) as any;
+	}
+}

src/lib/libs/arrays/TypedArray.ts

@@ -0,0 +1,220 @@
+import { buffer, func, type InternalBuffer, object, string, symbol } from "../primordials.ts";
+import { symbols, wrapI } from "../utils.ts";
+import { Error, TypeError } from "../values/errors.ts";
+import { abKey, ArrayBuffer, getAB } from "./ArrayBuffer.ts";
+
+export const abstractIgnore = symbol.getSymbol("TypedArray.abstractIgnore");
+
+export function typedArrayFuncs(perEl: number, constructor: (buff: InternalBuffer, start: number, end: number) => number[]) {
+	return {
+		map(self: number[], cb: (val: number, i: number, self: number[]) => number, fnSelf: any) {
+			const res = constructor(buffer.buff(self.length * perEl), 0, self.length);
+
+			for (let i = 0; i < self.length; i++) {
+				res[i] = func.invoke(cb, fnSelf, [self[i], i, self]);
+			}
+
+			return res;
+		},
+		filter(self: number[], cb: (val: number, i: number, self: number[]) => boolean, fnSelf: any) {
+			const bigger = constructor(buffer.buff(self.length * perEl), 0, self.length);
+			let j = 0;
+	
+			for (let i = 0; i < self.length; i++) {
+				if (func.invoke(cb, self, [self[i], i, fnSelf])) bigger[j++] = self[i];
+			}
+	
+			const res = constructor(buffer.buff(j * perEl), 0, j);
+			for (let i = 0; i < j; i++) res[i] = bigger[i];
+			return res;
+		},
+		slice(self: number[], start = 0, end = self.length) {
+			start = wrapI(start, self.length);
+			end = wrapI(end, self.length);
+	
+			if (end <= start) return constructor(buffer.buff(0), 0, 0);
+	
+			const res = constructor(buffer.buff((end - start) * perEl), 0, end - start);
+	
+			for (let i = 0; i < end - start; i++) {
+				res[i] = self[start + i];
+			}
+	
+			return res;
+		},
+		subarray(self: number[], start = 0, end = self.length) {
+			start = wrapI(start, self.length);
+			end = wrapI(end, self.length);
+	
+			if (end <= start) return constructor(buffer.buff(0), 0, 0);
+	
+			const offset = buffer.start(self);
+			return constructor(buffer.backer(self), offset + start, offset + end);
+		},
+		construct(self: ArrayBuffer | number[] | number | Iterable<number>, start?: number, end?: number) {
+			if (typeof self === "number") {
+				return constructor(buffer.buff(self * perEl), 0, self);
+			}
+			if (self instanceof ArrayBuffer) {
+				const internal = self[abKey];
+				if (start === undefined) start = 0;
+				if (end === undefined) end = (internal.length / perEl) | 0;
+				return constructor(internal, start, end);
+			}
+			if (symbols.iterator in self && typeof self[symbols.iterator] === "function") {
+				const arr: number[] = [];
+				let i = 0;
+				const gen: Iterator<number> = self[symbols.iterator]();
+	
+				for (let it = gen.next(); !it.done; it = gen.next()) {
+					arr[i++] = Number(it.value);
+				}
+	
+				const res = constructor(buffer.buff(i * perEl), 0, i);
+				for (let j = 0; j < i; j++) res[j] = arr[j];
+				return res;
+			}
+	
+			const res = constructor(buffer.buff((self as number[]).length * perEl), 0, (self as number[]).length);
+			for (let i = 0; i < (self as number[]).length; i++) res[i] = (self as number[])[i];
+			return res;
+		},
+		byteOffset(self: number[]) {
+			return buffer.start(self) * perEl;
+		},
+		byteLength(self: number[]) {
+			return (buffer.end(self) - buffer.start(self)) * perEl;
+		},
+	};
+}
+
+export class TypedArray {
+	public get buffer() {
+		return getAB(buffer.backer(this as any));
+	}
+	public get byteOffset(): number {
+		throw new Error("abstract");
+	}
+	public get byteLength(): number {
+		throw new Error("abstract");
+	}
+
+	public forEach(this: number[], cb: (val: number, i: number, self: this) => void, self?: any) {
+		for (let i = 0; i < this.length; i++) {
+			if (i in this) func.invoke(cb, self, [this[i], i, this]);
+		}
+	}
+	public join(this: number[], delim = ",") {
+		delim = String(delim);
+		const parts = [];
+		if (delim) {
+			for (let i = 0; i < this.length; i++) {
+				if (i) parts[parts.length] = delim;
+				parts[parts.length] = (i in this) ? String(this[i]) : "";
+			}
+		}
+		else {
+			for (let i = 0; i < this.length; i++) {
+				parts[i] = (i in this) ? String(this[i]) : "";
+			}
+		}
+
+		return string.stringBuild(parts);
+	}
+
+	public subarray(this: number[], start = 0, end = this.length) {
+		throw new Error("'slice' is an abstract method");
+	}
+
+	public slice(this: number[], start = 0, end = this.length) {
+		throw new Error("'slice' is an abstract method");
+	}
+
+	public map(this: number[], cb: (val: number, i: number, self: this) => number, self?: any) {
+		throw new Error("'map' is an abstract method");
+	}
+	public filter(this: number[], cb: (val: number, i: number, self: this) => boolean, self?: any) {
+		throw new Error("'filter' is an abstract method");
+	}
+	public reduce(this: number[], cb: (a: number, b: number, i: number, self: number[]) => number, initial?: number) {
+		let i = 0;
+		if (arguments.length <= 1) initial = this[i++];
+
+		for (; i < this.length; i++) {
+			initial = cb(initial!, this[i], i, this);
+		}
+
+		return initial;
+	}
+	public some(this: number[], cb: (val: number, i: number, self: number[]) => boolean, self?: any) {
+		for (let i = 0; i < this.length; i++) {
+			if (func.invoke(cb, self, [this[i], i, this])) return true;
+		}
+
+		return false;
+	}
+	public every(this: number[], cb: (val: number, i: number, self: number[]) => boolean, self?: any) {
+		for (let i = 0; i < this.length; i++) {
+			if (!func.invoke(cb, self, [this[i], i, this])) return false;
+		}
+
+		return true;
+	}
+	public find(this: number[], cb: (val: number, i: number, self: number[]) => boolean, self?: any) {
+		for (let i = 0; i < this.length; i++) {
+			if (func.invoke(cb, self, [this[i], i, this])) return this[i];
+		}
+
+		return undefined;
+	}
+	public indexOf(this: number[], val: number, start = 0) {
+		start |= 0;
+		if (start < 0) start = 0;
+		for (let i = start; i < this.length; i++) {
+			if (this[i] === val) return i;
+		}
+
+		return -1;
+	}
+	public lastIndexOf(this: number[], val: number, start = 0) {
+		start |= 0;
+		if (start < 0) start = 0;
+
+		for (let i = this.length - 1; i >= start; i--) {
+			if (this[i] === val) return i;
+		}
+
+		return -1;
+	}
+	public includes(this: number[], val: number) {
+		for (let i = 0; i < this.length; i++) {
+			if (this[i] === val) return i;
+		}
+
+		return false;
+	}
+
+	public sort(this: number[], cb?:  (a: number, b: number) => number) {
+		cb ||= (a, b) => a - b;
+
+		return object.sort(this, cb);
+	}
+	public reverse(this: number[]) {
+		const mid = this.length >> 1;
+		const end = this.length - 1;
+
+		for (let i = 0; i < mid; i++) {
+			const tmp = this[i];
+			this[i] = this[end - i];
+			this[end - i] = tmp;
+		}
+
+		return this;
+	}
+
+	public constructor(token?: typeof abstractIgnore) {
+		if (token !== abstractIgnore) {
+			throw new TypeError("TypedArray constructor can't be called");
+		}
+	}
+}

src/lib/libs/arrays/Uint8Array.ts

@@ -0,0 +1,32 @@
+import { buffer } from "../primordials.ts";
+import { abstractIgnore, TypedArray, typedArrayFuncs } from "./TypedArray.ts";
+
+const factory = buffer.uint8;
+const funcs = typedArrayFuncs(1, factory);
+
+export class Uint8Array extends TypedArray {
+	public override get byteOffset() {
+		return funcs.byteOffset(this as any);
+	}
+	public override get byteLength() {
+		return funcs.byteLength(this as any);
+	}
+
+	public override subarray(this: number[], start?: number, end?: number) {
+		return funcs.subarray(this, start, end);
+	}
+	public override slice(this: any[], start?: number, end?: number) {
+		return funcs.slice(this, start, end);
+	}
+	public override map(this: any[], cb: (val: number, i: number, self: any) => number, self?: any) {
+		return funcs.map(this, cb, self);
+	}
+	public override filter(this: any[], cb: (val: number, i: number, self: any) => boolean, self?: any) {
+		return funcs.filter(this, cb, self);
+	}
+
+	public constructor(obj: any, start?: number, end?: number) {
+		super(abstractIgnore);
+		return funcs.construct(obj, start, end) as any;
+	}
+}

src/lib/libs/classes/date.ts

@@ -1,4 +1,4 @@
-import { now, symbol } from "./primordials.ts";
+import { now, symbol } from "../primordials.ts";
 
 const timeKey: unique symbol = symbol.makeSymbol("") as any;
 

src/lib/libs/classes/map.ts

@@ -1,6 +1,6 @@
-import { Array } from "./array.ts";
-import { func, map, symbol } from "./primordials.ts";
-import { symbols } from "./utils.ts";
+import { Array } from "../values/array.ts";
+import { func, map, symbol } from "../primordials.ts";
+import { symbols } from "../utils.ts";
 
 const mapKey: unique symbol = symbol.makeSymbol("Map.impl") as any;
 

src/lib/libs/classes/promise.ts

@@ -1,4 +1,4 @@
-import { func, next, object, symbol } from "./primordials.ts";
+import { func, next, object, symbol } from "../primordials.ts";
 
 enum PromiseState {
 	Pending = "pend",

src/lib/libs/classes/set.ts

@@ -1,6 +1,6 @@
-import { Array } from "./array.ts";
-import { func, map, symbol } from "./primordials.ts";
-import { symbols } from "./utils.ts";
+import { Array } from "../values/array.ts";
+import { func, map, symbol } from "../primordials.ts";
+import { symbols } from "../utils.ts";
 
 const mapKey: unique symbol = symbol.makeSymbol("Set.impl") as any;
 

src/lib/libs/namespaces/console.ts

@@ -1,4 +1,4 @@
-import { func, json, object } from "./primordials";
+import { func, json, object } from "../primordials.ts";
 
 export const console = {};
 

src/lib/libs/namespaces/json.ts

@@ -1,4 +1,4 @@
-import { json, object } from "./primordials";
+import { json, object } from "../primordials.ts";
 
 export const JSON = {};
 

src/lib/libs/namespaces/math.ts

@@ -1,4 +1,4 @@
-import { number, object } from "./primordials";
+import { number, object } from "../primordials.ts";
 
 export const Math = {};
 

src/lib/libs/polyfills/possibleConstructorReturn.js

@@ -1,2 +1 @@
-export default function _possibleConstructorReturn() {
-}
+export default function _possibleConstructorReturn(_, res) { return res; }

src/lib/libs/primordials.ts

@@ -1,3 +1,10 @@
+const buffSymbol: unique symbol = undefined as any;
+
+export interface InternalBuffer {
+	length: number;
+	[buffSymbol]: "buffer";
+}
+
 export interface SymbolPrimordials {
 	makeSymbol(name: string): symbol;
 	getSymbol(name: string): symbol;
@@ -46,6 +53,22 @@ export interface ObjectPrimordials {
 	memcpy(src: any[], dst: any[], srcI: number, dstI: number, n: number): void;
 	sort(arr: any[], cb: Function): any[];
 }
+export interface BufferPrimordials {
+	buff(n: number): InternalBuffer;
+	backer(arr: number[]): InternalBuffer;
+	start(arr: number[]): number;
+	end(arr: number[]): number;
+
+	uint8(buff: InternalBuffer, start: number, end: number): number[];
+	int8(buff: InternalBuffer, start: number, end: number): number[];
+	int32(buff: InternalBuffer, start: number, end: number): number[];
+
+	isUint8(val: any): val is number[];
+	isInt8(val: any): val is number[];
+	isInt32(val: any): val is number[];
+	is(val: any): val is number[];
+	isBuff(val: any): val is InternalBuffer;
+}
 export interface FunctionPrimordials {
 	invokeType(args: IArguments, self: any): "new" | "call";
 	invokeTypeInfer(): "new" | "call";
@@ -67,6 +90,7 @@ export interface Primordials {
 	object: ObjectPrimordials;
 	function: FunctionPrimordials;
 	json: JSONPrimordials;
+	buffer: BufferPrimordials;
 	map: new (weak?: boolean) => {
 		get(key: any): any;
 		has(key: any): boolean;
@@ -88,7 +112,8 @@ export interface Primordials {
 	schedule(func: () => void, delay: number): () => void;
 }
 
-globalThis.undefined = void 0;
+// prevent optimization to "undefined", which doesn't exist yet
+globalThis.undefined = ({} as any).bogus;
 export const target = (globalThis as any).target;
 export const primordials: Primordials = (globalThis as any).primordials;
 
@@ -97,6 +122,7 @@ export const {
 	number,
 	string,
 	object,
+	buffer,
 	function: func,
 	json,
 	map,

src/lib/libs/utils.ts

@@ -25,7 +25,7 @@ export interface TypeMap {
 
 export function unwrapThis<T extends keyof TypeMap>(self: any, type: T, constr: Function, name: string, arg = "this", defaultVal?: TypeMap[T]): TypeMap[T] {
 	if (typeof self === type) return self;
-	if (self instanceof constr && valueKey in self) self = (self as any)[valueKey];
+	if (self instanceof constr && valueKey in self) self = self[valueKey];
 	if (typeof self === type) return self;
 	if (defaultVal !== undefined) return defaultVal;
 	throw new TypeError(name + " requires that '" + arg + "' be a " + constr.name);

src/lib/libs/values/array.ts

@@ -1,7 +1,7 @@
-import { Error } from "./errors.ts";
-import { func, object, string } from "./primordials.ts";
-import { String } from "./string.ts";
-import { limitI, symbols, wrapI } from "./utils.ts";
+import { Error } from "../values/errors.ts";
+import { func, object, string } from "../primordials.ts";
+import { String } from "../values/string.ts";
+import { limitI, symbols, wrapI } from "../utils.ts";
 
 export const Array = (() => {
 	class Array {
@@ -33,7 +33,7 @@ export const Array = (() => {
 			for (let i = arguments.length - 1; i >= 0; i--) {
 				this[start + i] = arguments[i];
 			}
-			return arguments.length;
+			return this.length;
 		}
 		public pop(this: any[]) {
 			if (this.length === 0) return undefined;
@@ -51,7 +51,7 @@ export const Array = (() => {
 			for (let i = 0; i < arguments.length; i++) {
 				this[i] = arguments[i];
 			}
-			return arguments.length;
+			return this.length;
 		}
 		public shift(this: any[]) {
 			if (this.length === 0) return undefined;
@@ -71,7 +71,7 @@ export const Array = (() => {
 			const res: any[] = [];
 
 			function add(arr: any) {
-				if (Array.isArray(arr) || symbols.isConcatSpreadable in arr) {
+				if (Array.isArray(arr) || arr != null && typeof arr === "object" && symbols.isConcatSpreadable in arr) {
 					const start = res.length;
 					res.length += arr.length;
 
@@ -209,7 +209,7 @@ export const Array = (() => {
 		}
 		public includes(this: any[], val: any) {
 			for (let i = 0; i < this.length; i++) {
-				if (i in this && this[i] === val) return i;
+				if (i in this && this[i] === val) return true;
 			}
 
 			return false;

src/lib/libs/values/boolean.ts

@@ -1,5 +1,5 @@
-import { func } from "./primordials.ts";
-import { unwrapThis, valueKey } from "./utils.ts";
+import { func } from "../primordials.ts";
+import { unwrapThis, valueKey } from "../utils.ts";
 
 export const Boolean = (() => {
 	class Boolean {

src/lib/libs/values/errors.ts

@@ -1,4 +1,4 @@
-import { func, object } from "./primordials.ts";
+import { func, object } from "../primordials.ts";
 import { String } from "./string.ts";
 
 export class Error {

src/lib/libs/values/function.ts

@@ -1,4 +1,4 @@
-import { compile, func, string } from "./primordials.ts";
+import { compile, func, string } from "../primordials.ts";
 import { String } from "./string.ts";
 
 export const Function = (() => {

src/lib/libs/values/number.ts

@@ -1,5 +1,5 @@
-import { func, number, object } from "./primordials.ts";
-import { unwrapThis, valueKey } from "./utils.ts";
+import { func, number, object } from "../primordials.ts";
+import { unwrapThis, valueKey } from "../utils.ts";
 
 export const Number = (() => {
 	class Number {

src/lib/libs/values/object.ts

@@ -1,10 +1,10 @@
 import { Boolean } from "./boolean.ts";
 import { TypeError } from "./errors.ts";
 import { Number } from "./number.ts";
-import { func, object } from "./primordials.ts";
+import { func, object } from "../primordials.ts";
 import { String } from "./string.ts";
-import { symbols, valueKey } from "./utils.ts";
-import { Symbol } from "./symbol.ts";
+import { symbols, valueKey } from "../utils.ts";
+import { Symbol } from "../values/symbol.ts";
 
 export const Object = (() => {
 	class Object {
@@ -29,6 +29,13 @@ export const Object = (() => {
 			return object.getOwnMember(this, key) != null;
 		}
 
+		public get __proto__() {
+			return object.getPrototype(this);
+		}
+		public set __proto__(val) {
+			object.setPrototype(this, val);
+		}
+
 		public constructor (value?: unknown) {
 			if (typeof value === 'object' && value !== null) return value as any;
 			if (typeof value === 'string') return new String(value) as any;
@@ -75,13 +82,13 @@ export const Object = (() => {
 					res.s = set;
 				}
 				if ("enumerable" in desc) res.e = !!desc.enumerable;
-				if ("configurable" in desc) res.e = !!desc.configurable;
+				if ("configurable" in desc) res.c = !!desc.configurable;
 
 				if (!object.defineProperty(obj, key, res)) throw new TypeError("Cannot redefine property: " + String(key));
 			}
 			else {
 				if ("enumerable" in desc) res.e = !!desc.enumerable;
-				if ("configurable" in desc) res.e = !!desc.configurable;
+				if ("configurable" in desc) res.c = !!desc.configurable;
 				if ("writable" in desc) res.w = !!desc.writable;
 				if ("value" in desc) res.v = desc.value;
 
@@ -190,6 +197,7 @@ export const Object = (() => {
 		}
 	}
 
+	object.defineProperty(Object.prototype, "__proto__", { e: false });
 	object.setPrototype(Object.prototype, undefined);
 
 	func.setCallable(Object, true);

src/lib/libs/values/regex.ts

@@ -1,9 +1,9 @@
-import { func, regex, symbol } from "./primordials.ts";
+import { func, regex, symbol } from "../primordials.ts";
 import { String } from "./string.ts";
-import { type ReplaceRange } from "./utils.ts";
-import { applyReplaces } from "./utils.ts";
-import { applySplits } from "./utils.ts";
-import { symbols } from "./utils.ts";
+import { type ReplaceRange } from "../utils.ts";
+import { applyReplaces } from "../utils.ts";
+import { applySplits } from "../utils.ts";
+import { symbols } from "../utils.ts";
 
 const regexKey: unique symbol = symbol.makeSymbol("RegExp.impl") as any;
 

src/lib/libs/values/string.ts

@@ -1,7 +1,7 @@
 import { TypeError } from "./errors.ts";
-import { func, number, regex, string } from "./primordials.ts";
+import { func, number, regex, string } from "../primordials.ts";
 import { RegExp } from "./regex.ts";
-import { applyReplaces, applySplits, limitI, type ReplaceRange, symbols, unwrapThis, valueKey, wrapI } from "./utils.ts";
+import { applyReplaces, applySplits, limitI, type ReplaceRange, symbols, unwrapThis, valueKey, wrapI } from "../utils.ts";
 
 const trimStartRegex = new regex("^\\s+", false, false, false, false, false);
 const trimEndRegex = new regex("\\s+$", false, false, false, false, false);
@@ -41,8 +41,9 @@ export const String = (() => {
 			offset = +offset;
 			return string.indexOf(self, search, offset, false);
 		}
-		public lastIndexOf(search: string, offset = 0) {
+		public lastIndexOf(search: string, offset?: number) {
 			const self = unwrapThis(this, "string", String, "String.prototype.lastIndexOf");
+			if (offset == null) offset = self.length;
 			offset = +offset;
 			return string.indexOf(self, search, offset, true);
 		}

src/lib/libs/values/symbol.ts

@@ -1,5 +1,5 @@
-import { func, object, symbol } from "./primordials.ts";
-import { symbols, unwrapThis, valueKey } from "./utils.ts";
+import { func, object, symbol } from "../primordials.ts";
+import { symbols, unwrapThis, valueKey } from "../utils.ts";
 
 export const Symbol = (() => {
 	class Symbol {

src/lib/transpiler/babel.ts

@@ -1,14 +1,14 @@
 import { SourceMap } from "./map.ts";
-import { transform } from "@babel/standalone";
-// import presetEnv from "@babel/preset-env";
+import { transform, availablePresets } from "@babel/standalone";
 
 export default function babel(next: Compiler): Compiler {
 	print("Loaded babel!");
-	
+
 	return (filename, code, prevMap) => {
 		const res = transform(code, {
 			filename,
 			sourceMaps: true,
+			presets: [availablePresets.env],
 		});
 
 		const map = SourceMap.parse({
@@ -17,9 +17,8 @@ export default function babel(next: Compiler): Compiler {
 			sources: [filename],
 		});
 
-		const compiled = next("babel-internal://" + filename, res.code!, SourceMap.chain(map, prevMap));
 		registerSource(filename, code);
-		return compiled;
+		return next("babel-internal://" + filename, res.code!, SourceMap.chain(map, prevMap));
 	};
 }
 

src/lib/transpiler/coffeescript.ts

@@ -20,9 +20,8 @@ export default function coffee(next: Compiler): Compiler {
 			sources: [filename],
 		});
 
-		const compiled = next("coffee-internal://" + filename, result, SourceMap.chain(map, prevMap));
 		registerSource(filename, code);
-		return compiled;
+		return next("coffee-internal://" + filename, result, SourceMap.chain(map, prevMap));
 	};
 }
 

src/lib/transpiler/map.ts

@@ -6,15 +6,24 @@ for (let i = 97; i <= 122; i++) map[i] = j++;
 map[43] = j++;
 map[47] = j++;
 
-export type Location = readonly [file: string, line: number, start: number];
-
 export function decodeVLQ(val: string): number[][][] {
 	const lines: number[][][] = [];
 
-	for (const line of val.split(";", -1)) {
-		const elements: number[][] = [];
+	const fileParts = val.split(";", -1);
+
+	for (let i = 0; i < fileParts.length; i++) {
+		const line = fileParts[i];
+		if (line.length === 0) {
+			lines.push([]);
+			continue;
+		}
+
+		const elements: number[][] = [];
+		const lineParts = line.split(",", -1);
+
+		for (let i = 0; i < lineParts.length; i++) {
+			const el = lineParts[i];
 
-		for (const el of line.split(",", -1)) {
 			if (el.length === 0) elements.push([]);
 			else {
 				const list: number[] = [];
@@ -72,10 +81,6 @@ export namespace Location {
 	}
 }
 
-export interface SourceMap {
-	(loc: Location): Location | undefined;
-}
-
 export class VLQSourceMap {
 	public constructor(
 		public readonly array: Map<string, [start: number, dst: Location][][]>,
@@ -98,7 +103,7 @@ export class VLQSourceMap {
 				const mid = (a + b) >> 1;
 				const el = line[mid];
 
-				const cmp = el[0] - src[1];
+				const cmp = el[0] - src[2];
 
 				if (cmp < 0) {
 					if (done) {
@@ -132,10 +137,13 @@ export class VLQSourceMap {
 		const lastCols = new Set<number>();
 
 		for (let compiledRow = 0; compiledRow < mapping.length; compiledRow++) {
-			const line = file[compiledRow] ??= [];
+			const line: [start: number, dst: Location][] = file[compiledRow] = [];
 			let compiledCol = 0;
 
-			for (const rawSeg of mapping[compiledRow]) {
+			const rowData = mapping[compiledRow];
+			for (let i = 0; i < rowData.length; i++) {
+				const rawSeg = rowData[i];
+
 				compiledCol += rawSeg.length > 0 ? rawSeg[0] : 0;
 				originalFile += rawSeg.length > 1 ? rawSeg[1] : 0;
 				originalRow += rawSeg.length > 2 ? rawSeg[2] : 0;

src/lib/transpiler/transpiler.d.ts

@@ -0,0 +1,10 @@
+type Location = [file: string, line: number, start: number];
+type SourceMap = (loc: Location) => Location | undefined;
+
+type CompilerFactory = (next: Compiler) => Compiler;
+type Compiler = (filename: string, src: string, mapper: SourceMap) => (this: any, ...args: any[]) => any;
+
+declare function getResource(name: string): string | undefined;
+declare function print(...args: any[]): void;
+declare function register(factory: CompilerFactory): void;
+declare function registerSource(filename: string, src: string): void;

src/lib/transpiler/types.ts

@@ -1,10 +0,0 @@
-import { type SourceMap } from "./map.ts";
-
-declare global {
-	type CompilerFactory = (next: Compiler) => Compiler;
-	type Compiler = (filename: string, src: string, mapper: SourceMap) => Function;
-
-	function print(...args: any[]): void;
-	function register(factory: CompilerFactory): void;
-	function registerSource(filename: string, src: string): void;
-}

src/lib/transpiler/typescript.ts

@@ -1,17 +1,8 @@
 import { createDocumentRegistry, createLanguageService, ModuleKind, ScriptSnapshot, ScriptTarget, type Diagnostic, type CompilerOptions, type IScriptSnapshot, flattenDiagnosticMessageText, CompilerHost, LanguageService } from "typescript";
 import { SourceMap } from "./map.ts";
 
-declare function getResource(name: string): string | undefined;
-declare function print(...args: any[]): void;
-declare function register(factory: CompilerFactory): void;
-declare function registerSource(filename: string, src: string): void;
-
-type CompilerFactory = (next: Compiler) => Compiler;
-type Compiler = (filename: string, src: string, mapper: SourceMap) => Function;
-
 const resources: Record<string, string | undefined> = {};
 
-
 function resource(name: string) {
 	if (name in resources) return resources[name];
 	else return resources[name] = getResource(name);
@@ -115,8 +106,8 @@ export default function typescript(next: Compiler): Compiler {
 		const result = outputs["/src.js"];
 		const declaration = outputs["/src.d.ts"];
 
-		const compiled = next("ts-internal://" + filename, result, SourceMap.chain(map, prevMap));
 		registerSource(filename, code);
+		const compiled = next("ts-internal://" + filename, result, SourceMap.chain(map, prevMap));
 
 		return function (this: any) {
 			const res = compiled.apply(this, arguments);

src/main/java/me/topchetoeu/jscript/compilation/control/ForInNode.java

@@ -21,7 +21,9 @@ public class ForInNode extends Node {
 
 	@Override public void resolve(CompileResult target) {
 		body.resolve(target);
-		binding.resolve(target);
+		if (isDecl) {
+			target.scope.define(binding.name);
+		}
 	}
 
 	@Override public void compileFunctions(CompileResult target) {

src/main/java/me/topchetoeu/jscript/compilation/members/FieldMemberNode.java

@@ -29,7 +29,7 @@ public class FieldMemberNode implements Member {
 		if (value == null) target.add(Instruction.pushUndefined());
 		else value.compile(target, true);
 
-		target.add(Instruction.defField());
+		target.add(Instruction.storeMember());
 	}
 
 	public FieldMemberNode(Location loc, Node key, Node value) {

src/main/java/me/topchetoeu/jscript/repl/SimpleRepl.java

@@ -36,8 +36,13 @@ import me.topchetoeu.jscript.runtime.exceptions.EngineException;
 import me.topchetoeu.jscript.runtime.values.Value;
 import me.topchetoeu.jscript.runtime.values.functions.FunctionValue;
 import me.topchetoeu.jscript.runtime.values.functions.NativeFunction;
+import me.topchetoeu.jscript.runtime.values.objects.ArrayLikeValue;
 import me.topchetoeu.jscript.runtime.values.objects.ArrayValue;
 import me.topchetoeu.jscript.runtime.values.objects.ObjectValue;
+import me.topchetoeu.jscript.runtime.values.objects.buffers.Int32ArrayValue;
+import me.topchetoeu.jscript.runtime.values.objects.buffers.Int8ArrayValue;
+import me.topchetoeu.jscript.runtime.values.objects.buffers.TypedArrayValue;
+import me.topchetoeu.jscript.runtime.values.objects.buffers.Uint8ArrayValue;
 import me.topchetoeu.jscript.runtime.values.primitives.BoolValue;
 import me.topchetoeu.jscript.runtime.values.primitives.StringValue;
 import me.topchetoeu.jscript.runtime.values.primitives.SymbolValue;
@@ -61,9 +66,12 @@ public class SimpleRepl {
 
 	private static void reader() {
 		try {
-			environment = createESEnv();
-			tsEnvironment = createESEnv();
-
+			try {
+				environment = createESEnv();
+				tsEnvironment = createESEnv();
+			}
+			catch (ExecutionException e) { throw e.getCause(); }
+			
 			server = new DebugServer();
 			debugTask = server.start(new InetSocketAddress("127.0.0.1", 9229), true);
 			server.targets.put("default", (socket, req) -> new SimpleDebugger(socket)
@@ -74,16 +82,19 @@ public class SimpleRepl {
 			try {
 				try { initGlobals(); } catch (ExecutionException e) { throw e.getCause(); }
 			}
-			catch (EngineException | SyntaxException e) { System.err.println(Value.errorToReadable(environment, e, null)); }
+			catch (EngineException | SyntaxException e) {
+				System.err.println("Failed to load stdlib. Falling back to barebones environment...");
+				System.err.println(Value.errorToReadable(environment, e, null));
+			}
 
 
 			System.out.println(String.format("Running %s v%s by %s", Metadata.name(), Metadata.version(), Metadata.author()));
 
 			for (var arg : args) {
-				try {
-					var file = new File(arg);
-					var raw = Reading.streamToString(new FileInputStream(file));
+				var file = new File(arg);
+				var raw = Reading.streamToString(new FileInputStream(file));
 
+				try {
 					try {
 						var res = engine.pushMsg(
 							false, environment,
@@ -95,14 +106,15 @@ public class SimpleRepl {
 					catch (ExecutionException e) { throw e.getCause(); }
 				}
 				catch (EngineException | SyntaxException e) { System.err.println(Value.errorToReadable(environment, e, null)); }
+
 			}
 
 			for (var i = 0; ; i++) {
+				var raw = Reading.readline();
+
+				if (raw == null) break;
+
 				try {
-					var raw = Reading.readline();
-
-					if (raw == null) break;
-
 					try {
 						var res = engine.pushMsg(
 							false, environment,
@@ -114,8 +126,10 @@ public class SimpleRepl {
 					catch (ExecutionException e) { throw e.getCause(); }
 				}
 				catch (EngineException | SyntaxException e) { System.err.println(Value.errorToReadable(environment, e, null)); }
+
 			}
 		}
+		catch (EngineException | SyntaxException e) { System.err.println(Value.errorToReadable(environment, e, null)); }
 		catch (IOException e) {
 			System.out.println(e.toString());
 			engine.thread().interrupt();
@@ -183,34 +197,78 @@ public class SimpleRepl {
 
 		var source = new StringBuilder();
 
-		var inBrackets = false;
+		StringBuilder bracesSource = null;
+		StringBuilder bracketsSource = null;
 
 		while (true) {
 			if (n >= src.length()) break;
 			var c = src.charAt(n++);
 
-			if (c == '\\') {
+			if (c == '\\' && n + 1 < src.length() && src.charAt(n) == 'b') {
+				c = '\b';
+				n++;
+			}
+
+			if (bracesSource != null) {
+				var failed = true;
+
+				if (Character.isDigit(c)) {
+					bracesSource.append(c);
+					failed = false;
+				}
+				else if (c == ',' && bracesSource.indexOf(",") < 0) {
+					bracesSource.append(c);
+					failed = false;
+				}
+				else if (c == '}' && bracesSource.length() > 0) {
+					bracesSource.append(c);
+					source.append(bracesSource);
+					bracesSource = null;
+					continue;
+				}
+
+				if (failed) {
+					source.append("\\");
+					source.append(bracesSource);
+					bracesSource = null;
+					n--;
+				}
+			}
+			else if (bracketsSource != null) {
+				if (c == '[') bracketsSource.append("\\[");
+				else if (c == ']') {
+					var res = bracketsSource.append(']').toString();
+					bracketsSource = null;
+					if (res.equals("[^]")) res = "[\\s\\S]";
+						else if (res.equals("[]")) res = "[^\\s\\S]";
+					source.append(res);
+				}
+				else if (c == '\\') {
+					if (n >= src.length()) break;
+					bracketsSource.append(c).append(src.charAt(n++));
+				}
+				else bracketsSource.append(c);
+			}
+			else if (c == '\\') {
 				if (n >= src.length()) throw new PatternSyntaxException("Unexpected end", src, n);
 				c = src.charAt(n++);
 				source.append('\\').append(c);
 			}
 			else if (c == '[') {
-				if (inBrackets) source.append("\\[");
-				else {
-					inBrackets = true;
-					source.append('[');
-				}
+				bracketsSource = new StringBuilder("[");
 			}
-			else if (c == ']') {
-				if (inBrackets) {
-					inBrackets = false;
-					source.append(']');
-				}
-				else throw new PatternSyntaxException("Unexpected ']'", src, n);
+			else if (c == '{' && bracketsSource == null) {
+				bracesSource = new StringBuilder("{");
 			}
 			else source.append(c);
 		}
 
+		if (bracesSource != null) {
+			source.append("\\");
+			source.append(bracesSource);
+		}
+		if (bracketsSource != null) throw new PatternSyntaxException("Unmatched '['", src, n - bracketsSource.length());
+
 		return source.toString();
 	}
 
@@ -314,12 +372,18 @@ public class SimpleRepl {
 			else return NumberValue.parseFloat(args.get(0).toString(), false);
 		}));
 		res.defineOwnField(env, "isNaN", new NativeFunction(args -> BoolValue.of(args.get(0).isNaN())));
-		res.defineOwnField(env, "NaN", NumberValue.NAN);
-		res.defineOwnField(env, "Infinity", NumberValue.of(Double.POSITIVE_INFINITY));
 
 		res.defineOwnField(env, "pow", new NativeFunction(args -> {
 			return NumberValue.of(Math.pow(args.get(0).toNumber(args.env).getDouble(), args.get(1).toNumber(args.env).getDouble()));
 		}));
+		res.defineOwnField(env, "log", new NativeFunction(args -> {
+			return NumberValue.of(Math.log(args.get(0).toNumber(args.env).getDouble()));
+		}));
+
+		res.defineOwnField(env, "NaN", NumberValue.NAN);
+		res.defineOwnField(env, "Infinity", NumberValue.of(Double.POSITIVE_INFINITY));
+		res.defineOwnField(env, "PI", NumberValue.of(Math.PI));
+		res.defineOwnField(env, "E", NumberValue.of(Math.E));
 
 		return res;
 	}
@@ -462,9 +526,6 @@ public class SimpleRepl {
 			if (member == null) return Value.UNDEFINED;
 			else return member.descriptor(args.env, obj);
 		}));
-		res.defineOwnField(env, "isArray", new NativeFunction(args -> {
-			return BoolValue.of(args.get(0) instanceof ArrayValue);
-		}));
 		res.defineOwnField(env, "preventExt", new NativeFunction(args -> {
 			args.get(0).preventExtensions();
 			return VoidValue.UNDEFINED;
@@ -499,6 +560,73 @@ public class SimpleRepl {
 			return arr;
 		}));
 
+		res.defineOwnField(env, "isArray", new NativeFunction(args -> {
+			return BoolValue.of(args.get(0) instanceof ArrayLikeValue);
+		}));
+
+		return res;
+	}
+
+	private static ObjectValue bufferPrimordials(Environment env) {
+		var buffProto = new ObjectValue();
+		buffProto.defineOwnProperty(env, "length", Optional.of(new NativeFunction(args -> {
+			return NumberValue.of(args.self(byte[].class).length);
+		})), Optional.empty(), false, true);
+
+		var res = new ObjectValue();
+		res.setPrototype(null, null);
+
+		res.defineOwnField(env, "buff", new NativeFunction(args -> {
+			var size = args.get(0).toNumber(env).getInt();
+			return TypedArrayValue.buffer(new byte[size], buffProto);
+		}));
+
+		res.defineOwnField(env, "uint8", new NativeFunction(args -> {
+			var buff = args.get(byte[].class, 0);
+			var start = args.get(1).toNumber(env).getInt();
+			var end = args.get(2).toNumber(env).getInt();
+			return new Uint8ArrayValue(buff, start, end);
+		}));
+		res.defineOwnField(env, "int8", new NativeFunction(args -> {
+			var buff = args.get(byte[].class, 0);
+			var start = args.get(1).toNumber(env).getInt();
+			var end = args.get(2).toNumber(env).getInt();
+			return new Int8ArrayValue(buff, start, end);
+		}));
+		res.defineOwnField(env, "int32", new NativeFunction(args -> {
+			var buff = args.get(byte[].class, 0);
+			var start = args.get(1).toNumber(env).getInt();
+			var end = args.get(2).toNumber(env).getInt();
+			return new Int32ArrayValue(buff, start, end);
+		}));
+
+		res.defineOwnField(env, "isUint8", new NativeFunction(args -> {
+			return BoolValue.of(args.get(0) instanceof Uint8ArrayValue);
+		}));
+		res.defineOwnField(env, "isInt8", new NativeFunction(args -> {
+			return BoolValue.of(args.get(0) instanceof Int8ArrayValue);
+		}));
+		res.defineOwnField(env, "isInt32", new NativeFunction(args -> {
+			return BoolValue.of(args.get(0) instanceof Int32ArrayValue);
+		}));
+
+		res.defineOwnField(env, "is", new NativeFunction(args -> {
+			return BoolValue.of(args.get(0) instanceof TypedArrayValue);
+		}));
+		res.defineOwnField(env, "isBuff", new NativeFunction(args -> {
+			return BoolValue.of(args.get(byte[].class, 0) != null);
+		}));
+
+		res.defineOwnField(env, "backer", new NativeFunction(args -> {
+			return TypedArrayValue.buffer(((TypedArrayValue)args.get(0)).buffer, buffProto);
+		}));
+		res.defineOwnField(env, "start", new NativeFunction(args -> {
+			return NumberValue.of(((TypedArrayValue)args.get(0)).start);
+		}));
+		res.defineOwnField(env, "end", new NativeFunction(args -> {
+			return NumberValue.of(((TypedArrayValue)args.get(0)).end);
+		}));
+
 		return res;
 	}
 
@@ -584,6 +712,7 @@ public class SimpleRepl {
 		res.defineOwnField(env, "number", numberPrimordials(env));
 		res.defineOwnField(env, "string", stringPrimordials(env));
 		res.defineOwnField(env, "object", objectPrimordials(env));
+		res.defineOwnField(env, "buffer", bufferPrimordials(env));
 		res.defineOwnField(env, "function", functionPrimordials(env));
 		res.defineOwnField(env, "json", jsonPrimordials(env));
 		res.defineOwnField(env, "map", mapPrimordials(env));
@@ -605,6 +734,8 @@ public class SimpleRepl {
 			setProto(args.env, env, Value.SYNTAX_ERR_PROTO, obj, "syntax");
 			setProto(args.env, env, Value.TYPE_ERR_PROTO, obj, "type");
 			setProto(args.env, env, Value.RANGE_ERR_PROTO, obj, "range");
+			setProto(args.env, env, Value.UINT8_ARR_PROTO, obj, "uint8");
+			setProto(args.env, env, Value.INT32_ARR_PROTO, obj, "int32");
 			var val = obj.getMember(args.env, "regex");
 			if (val instanceof FunctionValue func) {
 				env.add(Value.REGEX_CONSTR, func);
@@ -740,7 +871,7 @@ public class SimpleRepl {
 		reader.setName("STD Reader");
 		reader.start();
 
-		engine.thread().join();
+		reader.join();
 		engineTask.interrupt();
 		debugTask.interrupt();
 	}

src/main/java/me/topchetoeu/jscript/repl/debug/SimpleDebugger.java

@@ -199,12 +199,15 @@ public class SimpleDebugger implements Debugger {
 			this.frame = frame;
 			this.id = id;
 
-			var map = DebugContext.get(frame.env).getMap(frame.function);
+			var map = DebugContext.get(frame.env).getMapOrEmpty(frame.function);
 			this.globals = Value.global(frame.env);
 			this.locals = ScopeObject.locals(frame, map.localNames);
 			this.capturables = ScopeObject.capturables(frame, map.capturableNames);
 			this.captures = ScopeObject.captures(frame, map.captureNames);
-			this.variables = ScopeObject.combine((ObjectValue)this.globals, locals, capturables, captures);
+			if (this.globals instanceof ObjectValue) {
+				this.variables = ScopeObject.combine((ObjectValue)this.globals, locals, capturables, captures);
+			}
+			else this.variables = ScopeObject.combine(null, locals, capturables, captures);
 			this.valstack = new StackObject(frame);
 		}
 	}
@@ -406,7 +409,43 @@ public class SimpleDebugger implements Debugger {
 				res.set("description", className);
 			}
 
-			if (val instanceof ArrayValue arr) res.set("description", "Array(" + arr.size() + ")");
+			if (val instanceof ArrayValue arr) {
+				var desc = new StringBuilder("Array(" + arr.size() + ")");
+
+				if (arr.size() > 0) {
+					desc.append("[");
+
+					for (var i = 0; i < arr.size(); i++) {
+						if (i != 0) desc.append(", ");
+						if (desc.length() > 120) {
+							desc.append("...");
+							break;
+						}
+	
+						if (arr.has(i)) {
+							try {
+								var curr = arr.get(i);
+								if (curr instanceof StringValue str) {
+									desc.append(JSON.stringify(JSONElement.string(str.value)));
+								}
+								else {
+									desc.append(arr.get(i).toString(env));
+								}
+							}
+							catch (EngineException e) {
+								desc.append("<error>");
+							}
+						}
+						else {
+							desc.append("<empty>");
+						}
+					}
+	
+					desc.append("]");
+				}
+
+				res.set("description", desc.toString());
+			}
 			else if (val instanceof FunctionValue) res.set("description", val.toString());
 			else {
 				var defaultToString = false;
@@ -984,7 +1023,7 @@ public class SimpleDebugger implements Debugger {
 		}
 
 		try {
-			Value res = null;
+			Value res = Value.UNDEFINED;
 			if (compare(src, VSCODE_EMPTY)) res = emptyObject;
 			else if (compare(src, VSCODE_SELF)) res = self;
 			else if (compare(src, CHROME_GET_PROP_FUNC)) {
@@ -997,6 +1036,7 @@ public class SimpleDebugger implements Debugger {
 			else if (compare(src, VSCODE_CALL)) {
 				var func = (FunctionValue)(args.size() < 1 ? null : args.get(0));
 				ws.send(msg.respond(new JSONMap().set("result", serializeObj(env, func.apply(env, self)))));
+				return;
 			}
 			else if (compare(src, VSCODE_AUTOCOMPLETE)) {
 				var target = args.get(0);

src/main/java/me/topchetoeu/jscript/runtime/Engine.java

@@ -40,7 +40,7 @@ public final class Engine implements EventLoop {
 				try {
 					((Task<Object>)task).notifier.complete(task.runnable.get());
 				}
-				catch (CancellationException e) { throw e; }
+				catch (CancellationException e) { task.notifier.cancel(false); throw e; }
 				catch (RuntimeException e) { task.notifier.completeExceptionally(e); }
 			}
 			catch (InterruptedException | CancellationException e) {

src/main/java/me/topchetoeu/jscript/runtime/Frame.java

@@ -213,7 +213,9 @@ public final class Frame {
 			catch (StackOverflowError e) { throw STACK_OVERFLOW; }
 			catch (EngineException e) { error = e; }
 			catch (RuntimeException e) {
-				System.out.println(dbg.getMapOrEmpty(function).toLocation(codePtr, true));
+				if (!(e instanceof CancellationException)) {
+					System.out.println(dbg.getMapOrEmpty(function).toLocation(codePtr, true));
+				}
 				throw e;
 			}
 		}

src/main/java/me/topchetoeu/jscript/runtime/values/Value.java

@@ -62,7 +62,10 @@ public abstract class Value {
 	public static final Key<ObjectValue> FUNCTION_PROTO = new Key<>();
 
 	public static final Key<ObjectValue> ARRAY_PROTO = new Key<>();
-	public static final Key<ObjectValue> BYTE_BUFF_PROTO = new Key<>();
+
+	public static final Key<ObjectValue> INT8_ARR_PROTO = new Key<>();
+	public static final Key<ObjectValue> INT32_ARR_PROTO = new Key<>();
+	public static final Key<ObjectValue> UINT8_ARR_PROTO = new Key<>();
 
 	public static final Key<ObjectValue> ERROR_PROTO = new Key<>();
 	public static final Key<ObjectValue> SYNTAX_ERR_PROTO = new Key<>();

src/main/java/me/topchetoeu/jscript/runtime/values/objects/ByteBufferValue.java

@@ -1,81 +0,0 @@
-package me.topchetoeu.jscript.runtime.values.objects;
-
-import java.util.Arrays;
-import java.util.Iterator;
-
-import me.topchetoeu.jscript.common.environment.Environment;
-import me.topchetoeu.jscript.runtime.values.Value;
-import me.topchetoeu.jscript.runtime.values.primitives.numbers.NumberValue;
-
-public class ByteBufferValue extends ArrayLikeValue implements Iterable<Value> {
-	public final byte[] values;
-
-	public int size() { return values.length; }
-	public boolean setSize(int val) { return false; }
-
-	@Override public Value get(int i) {
-		if (i < 0 || i >= values.length) return null;
-		return NumberValue.of(values[i]);
-	}
-	@Override public boolean set(Environment env, int i, Value val) {
-		if (i < 0 || i >= values.length) return false;
-		values[i] = (byte)val.toNumber(env).getInt();
-		return true;
-	}
-	@Override public boolean has(int i) {
-		return i >= 0 && i < values.length;
-	}
-	@Override public boolean remove(int i) {
-		return false;
-	}
-
-	public void copyTo(byte[] arr, int sourceStart, int destStart, int count) {
-		System.arraycopy(values, sourceStart, arr, destStart, count);
-	}
-	public void copyTo(ByteBufferValue arr, int sourceStart, int destStart, int count) {
-		arr.copyFrom(values, sourceStart, destStart, count);
-	}
-	public void copyFrom(byte[] arr, int sourceStart, int destStart, int count) {
-		System.arraycopy(arr, sourceStart, arr, destStart, count);
-	}
-
-	public void move(int srcI, int dstI, int n) {
-		System.arraycopy(values, srcI, values, dstI, n);
-	}
-
-	public void sort() {
-		var buckets = new int[256];
-
-		for (var i = 0; i < values.length; i++) {
-			buckets[values[i] + 128]++;
-		}
-
-		var offset = 0;
-
-		for (var i = 0; i < values.length; i++) {
-			Arrays.fill(values, offset, offset += buckets[i], (byte)(i - 128));
-		}
-	}
-
-	@Override public Iterator<Value> iterator() {
-		return new Iterator<>() {
-			private int i = 0;
-
-			@Override public boolean hasNext() {
-				return i < size();
-			}
-			@Override public Value next() {
-				if (!hasNext()) return null;
-				return get(i++);
-			}
-		};
-	}
-
-	public ByteBufferValue(int size) {
-		this(new byte[size]);
-	}
-	public ByteBufferValue(byte[] buffer) {
-		setPrototype(BYTE_BUFF_PROTO);
-		this.values = buffer;
-	}
-}

src/main/java/me/topchetoeu/jscript/runtime/values/objects/ObjectValue.java

@@ -316,6 +316,7 @@ public class ObjectValue extends Value {
 		return res;
 	}
 	@Override public List<String> toReadableLines(Environment env, HashSet<ObjectValue> passed) {
+		if (passed.contains(this)) return Arrays.asList("[circular]");
 		return toReadableLines(env, passed, new HashSet<>());
 	}
 

src/main/java/me/topchetoeu/jscript/runtime/values/objects/buffers/Int32ArrayValue.java

@@ -0,0 +1,25 @@
+package me.topchetoeu.jscript.runtime.values.objects.buffers;
+
+public final class Int32ArrayValue extends TypedArrayValue {
+	@Override protected int onGet(int i) {
+		i = (i + start) << 2;
+		return (
+			this.buffer[i] |
+			this.buffer[i + 1] << 8 |
+			this.buffer[i + 2] << 16 |
+			this.buffer[i + 3] << 24
+		);
+	}
+	@Override protected void onSet(int i, int val) {
+		i = (i + start) << 2;
+		this.buffer[i + start + 0] = (byte)(val & 0xFF);
+		this.buffer[i + start + 1] = (byte)(val >> 8 & 0xFF);
+		this.buffer[i + start + 2] = (byte)(val >> 16 & 0xFF);
+		this.buffer[i + start + 3] = (byte)(val >> 24 & 0xFF);
+	}
+
+	public Int32ArrayValue(byte[] buff, int start, int end) {
+		super(buff, 4, start, end);
+		setPrototype(INT32_ARR_PROTO);
+	}
+}

src/main/java/me/topchetoeu/jscript/runtime/values/objects/buffers/Int8ArrayValue.java

@@ -0,0 +1,15 @@
+package me.topchetoeu.jscript.runtime.values.objects.buffers;
+
+public final class Int8ArrayValue extends TypedArrayValue {
+	@Override protected int onGet(int i) {
+		return this.buffer[i + start];
+	}
+	@Override protected void onSet(int i, int val) {
+		this.buffer[i + start] = (byte)val;
+	}
+
+	public Int8ArrayValue(byte[] buff, int start, int end) {
+		super(buff, 1, start, end);
+		setPrototype(INT8_ARR_PROTO);
+	}
+}

src/main/java/me/topchetoeu/jscript/runtime/values/objects/buffers/TypedArrayValue.java

@@ -0,0 +1,60 @@
+package me.topchetoeu.jscript.runtime.values.objects.buffers;
+
+import java.util.WeakHashMap;
+
+import me.topchetoeu.jscript.common.environment.Environment;
+import me.topchetoeu.jscript.runtime.values.Value;
+import me.topchetoeu.jscript.runtime.values.objects.ArrayLikeValue;
+import me.topchetoeu.jscript.runtime.values.objects.ObjectValue;
+import me.topchetoeu.jscript.runtime.values.primitives.UserValue;
+import me.topchetoeu.jscript.runtime.values.primitives.numbers.NumberValue;
+
+public abstract class TypedArrayValue extends ArrayLikeValue {
+	public static final WeakHashMap<byte[], UserValue<byte[]>> userValues = new WeakHashMap<>();
+
+	public final byte[] buffer;
+	public final int elementSize;
+	public final int start;
+	public final int end;
+
+	protected abstract int onGet(int i);
+	protected abstract void onSet(int i, int val);
+
+	@Override public int size() {
+		return end - start;
+	}
+
+	@Override public boolean setSize(int val) {
+		return false;
+	}
+
+	@Override public Value get(int i) {
+		if (i < 0 || i >= size()) return null;
+		return NumberValue.of(onGet(i));
+	}
+	@Override public boolean set(Environment env, int i, Value val) {
+		if (i < 0 || i >= size()) return false;
+		onSet(i, val.toNumber(env).getInt());
+		return true;
+	}
+	@Override public boolean has(int i) {
+		return i >= 0 && i < size();
+	}
+	@Override public boolean remove(int i) {
+		return false;
+	}
+
+	public TypedArrayValue(byte[] buffer, int elementSize, int start, int end) {
+		this.buffer = buffer;
+		this.elementSize = elementSize;
+		this.start = start;
+		this.end = end;
+	}
+
+	public static UserValue<byte[]> buffer(byte[] buff, ObjectValue proto) {
+		if (userValues.containsKey(buff)) return userValues.get(buff);
+		var res = UserValue.of(buff, proto);
+		userValues.put(buff, res);
+		return res;
+	}
+}

src/main/java/me/topchetoeu/jscript/runtime/values/objects/buffers/Uint8ArrayValue.java

@@ -0,0 +1,19 @@
+package me.topchetoeu.jscript.runtime.values.objects.buffers;
+
+public final class Uint8ArrayValue extends TypedArrayValue {
+	@Override protected int onGet(int i) {
+		var res = this.buffer[i + start];
+		if (res < 0) res += 0x100;
+
+		return res;
+	}
+	@Override protected void onSet(int i, int val) {
+		if (val > 0x7F) val -= 0x100;
+		this.buffer[i + start] = (byte)val;
+	}
+
+	public Uint8ArrayValue(byte[] buff, int start, int end) {
+		super(buff, 1, start, end);
+		setPrototype(UINT8_ARR_PROTO);
+	}
+}

src/main/resources/lib/errors.d.ts

@@ -0,0 +1,27 @@
+interface Error {
+	message: string;
+	name: string;
+}
+interface ErrorConstructor {
+	(msg?: string): Error;
+	new (msg?: string): Error;
+}
+
+interface TypeError extends Error { }
+interface TypeErrorConstructor {
+	(msg?: string): TypeError;
+	new (msg?: string): TypeError;
+}
+
+
+interface SyntaxError extends Error { }
+interface SyntaxErrorConstructor {
+	(msg?: string): SyntaxError;
+	new (msg?: string): SyntaxError;
+}
+
+interface RangeError extends Error { }
+interface RangeErrorConstructor {
+	(msg?: string): RangeError;
+	new (msg?: string): RangeError;
+}

src/main/resources/lib/globals/json.d.ts

@@ -0,0 +1,4 @@
+interface JSON {
+	stringify(val: any): string;
+	parse(val: string): any;
+}

src/main/resources/lib/globals/map.d.ts

@@ -0,0 +1,19 @@
+interface Map<K, V> {
+	readonly size: number;
+	get(key: K): V;
+	has(key: K): boolean;
+	set(key: K, val: V): this;
+	delete(key: K): boolean;
+	clear(): void;
+
+	keys(): K[];
+	values(): V[];
+	entries(): [K, V][];
+
+	forEach(cb: (val: V, key: K, map: this) => void, self?: any): void;
+
+	[Symbol.iterator](): Iterator<[K, V]>;
+}
+interface MapConstructor {
+	new <K, V>(iterable?: Iterable<[K, V]>): Map<K, V>;
+}

src/main/resources/lib/globals/set.d.ts

@@ -0,0 +1,18 @@
+interface Set<V> {
+	readonly size: number;
+	add(val: V): this;
+	has(key: V): boolean;
+	delete(key: V): boolean;
+	clear(): void;
+
+	keys(): V[];
+	values(): V[];
+	entries(): [V, V][];
+
+	forEach(cb: (val: V, key: V, map: this) => void, self?: any): void;
+
+	[Symbol.iterator](): Iterator<V>;
+}
+interface SetConstructor {
+	new <V>(iterable?: Iterable<V>): Set<V>;
+}

src/main/resources/lib/globals/weak-map.d.ts

@@ -0,0 +1,11 @@
+interface WeakMap<K, V> {
+	readonly size: number;
+	get(key: K): V;
+	set(key: K, val: V): this;
+	has(key: K): boolean;
+	delete(key: K): boolean;
+	clear(): void;
+}
+interface WeakMapConstructor {
+	new <K, V>(iterable?: Iterable<[K, V]>): WeakMap<K, V>;
+}

src/main/resources/lib/lib.d.ts

@@ -1,6 +1,8 @@
 /// <reference no-default-lib="true"/>
 /// <reference path="./typing.d.ts"/>
 /// <reference path="./iterator.d.ts"/>
+/// <reference path="./async.d.ts"/>
+/// <reference path="./errors.d.ts"/>
 /// <reference path="./values/function.d.ts"/>
 /// <reference path="./values/object.d.ts"/>
 /// <reference path="./values/array.d.ts"/>
@@ -9,12 +11,22 @@
 /// <reference path="./values/string.d.ts"/>
 /// <reference path="./values/number.d.ts"/>
 /// <reference path="./values/regexp.d.ts"/>
-/// <reference path="./async.d.ts"/>
+/// <reference path="./globals/json.d.ts"/>
+/// <reference path="./globals/set.d.ts"/>
+/// <reference path="./globals/map.d.ts"/>
+/// <reference path="./globals/weak-map.d.ts"/>
 
 declare function print(...args: any[]): void;
+declare function exit(): never;
+declare function measure(func: () => void): void;
 
 declare type IArguments = Array<any>;
 
+declare var Error: ErrorConstructor;
+declare var TypeError: TypeErrorConstructor;
+declare var SyntaxError: SyntaxErrorConstructor;
+declare var RangeError: RangeErrorConstructor;
+
 declare var Array: ArrayConstructor;
 declare var Boolean: BooleanConstructor;
 declare var Function: FunctionConstructor;
@@ -24,3 +36,9 @@ declare var Object: ObjectConstructor;
 declare var RegExp: RegExpConstructor;
 declare var String: StringConstructor;
 declare var Promise: PromiseConstructor;
+
+declare var JSON: JSON;
+
+declare var Set: SetConstructor;
+declare var Map: MapConstructor;
+declare var WeakMap: WeakMapConstructor;

src/main/resources/lib/typing.d.ts

@@ -1,6 +1,4 @@
-declare interface Record<Key, Val> {
-	[key: Key]: Val;
-}
+declare type Record<Key, Val> = { [x in Key]: Val }
 declare type InstanceType<T> = T extends new (...args: any[]) => infer T ? T : never;
 declare type ReturnType<T> = T extends (...args: any[]) => infer T ? T : never;
 declare type Arguments<T> =

src/main/resources/lib/values/array.d.ts

@@ -3,7 +3,7 @@ declare interface Array<T> {
 	[i: number]: T;
 
 	forEach(this: T[], cb: (val: T, i: number, self: this) => void, self?: any): void;
-	join(this: T[], delim?: string): void;
+	join(this: T[], delim?: string): string;
 
 	push(this: T[], ...elements: T[]): number;
 	pop(this: T[]): T | undefined;
@@ -11,8 +11,8 @@ declare interface Array<T> {
 	unshift(this: T[], ...elements: T[]): number;
 	shift(this: T[]): T | undefined;
 
-	concat(this: T[], ...elements: (T | T[])[]): T | undefined;
-	slice(this: T[], start?: number, end?: number): T | undefined;
+	concat(this: T[], ...elements: (T | T[])[]): T[];
+	slice(this: T[], start?: number, end?: number): T[];
 	splice(this: T[], start?: number, count?: number): T[];
 	splice(this: T[], start: number | undefined, count: number | undefined, ...elements: T[]): T[];
 

src/main/resources/lib/values/function.d.ts

@@ -1,11 +1,16 @@
 declare interface Function {
-	prototype: unknown;
+	prototype: object;
+
+	name: string;
+	length: number;
 
 	valueOf(): this;
 	toString(): string;
 
 	apply<Args extends readonly any[], Ret, Self>(this: (this: Self, ...args: Args) => Ret, self: Self, args: Args): Ret;
+	apply(this: Function, self: any, args: any[]): any;
 	call<Args extends readonly any[], Ret, Self>(this: (this: Self, ...args: Args) => Ret, self: Self, ...args: Args): Ret;
+	call(this: Function, self: any, ...args: any): any;
 	bind<T extends (...args: any[]) => any>(this: T): T;
 	bind<
 		Bound extends readonly any[],

src/main/resources/lib/values/string.d.ts

@@ -7,8 +7,8 @@ declare interface String {
 
 	at(index: number): string | undefined;
 	charAt(i: number): string | undefined;
-	charCodeAt(i: number): string;
-	codePointAt(i: number): string;
+	charCodeAt(i: number): number;
+	codePointAt(i: number): number;
 
 	includes(search: string, offset?: number): number;
 	indexOf(search: string, offset?: number): number;

tsconfig.json

@@ -0,0 +1,17 @@
+{
+    "include": ["src/lib/**/*.ts", "src/main/resources/lib/lib.d.ts"],
+    "compilerOptions": {
+        "strict": true,
+        "esModuleInterop": true,
+        "skipLibCheck": true,
+        "moduleResolution": "Bundler",
+        "module": "ESNext",
+        "target": "ESNext",
+        "noLib": true,
+        "forceConsistentCasingInFileNames": true,
+        "emitDecoratorMetadata": true,
+        "experimentalDecorators": true,
+        "allowImportingTsExtensions": true,
+        "noEmit": true
+    }
+}