api, login, auth

1 files changed, 2454 insertions, 0 deletions

diff --git a/node_modules/webpack/lib/Parser.js b/node_modules/webpack/lib/Parser.js
new file mode 100644
index 0000000..b496845
--- /dev/null
+++ b/node_modules/webpack/lib/Parser.js
@@ -0,0 +1,2454 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+// Syntax: https://developer.mozilla.org/en/SpiderMonkey/Parser_API
+
+const acorn = require("acorn");
+const { Tapable, SyncBailHook, HookMap } = require("tapable");
+const util = require("util");
+const vm = require("vm");
+const BasicEvaluatedExpression = require("./BasicEvaluatedExpression");
+const StackedSetMap = require("./util/StackedSetMap");
+
+const acornParser = acorn.Parser;
+
+const joinRanges = (startRange, endRange) => {
+	if (!endRange) return startRange;
+	if (!startRange) return endRange;
+	return [startRange[0], endRange[1]];
+};
+
+const defaultParserOptions = {
+	ranges: true,
+	locations: true,
+	ecmaVersion: 11,
+	sourceType: "module",
+	onComment: null
+};
+
+// regexp to match at least one "magic comment"
+const webpackCommentRegExp = new RegExp(/(^|\W)webpack[A-Z]{1,}[A-Za-z]{1,}:/);
+
+const EMPTY_COMMENT_OPTIONS = {
+	options: null,
+	errors: null
+};
+
+class Parser extends Tapable {
+	constructor(options, sourceType = "auto") {
+		super();
+		this.hooks = {
+			evaluateTypeof: new HookMap(() => new SyncBailHook(["expression"])),
+			evaluate: new HookMap(() => new SyncBailHook(["expression"])),
+			evaluateIdentifier: new HookMap(() => new SyncBailHook(["expression"])),
+			evaluateDefinedIdentifier: new HookMap(
+				() => new SyncBailHook(["expression"])
+			),
+			evaluateCallExpressionMember: new HookMap(
+				() => new SyncBailHook(["expression", "param"])
+			),
+			statement: new SyncBailHook(["statement"]),
+			statementIf: new SyncBailHook(["statement"]),
+			label: new HookMap(() => new SyncBailHook(["statement"])),
+			import: new SyncBailHook(["statement", "source"]),
+			importSpecifier: new SyncBailHook([
+				"statement",
+				"source",
+				"exportName",
+				"identifierName"
+			]),
+			export: new SyncBailHook(["statement"]),
+			exportImport: new SyncBailHook(["statement", "source"]),
+			exportDeclaration: new SyncBailHook(["statement", "declaration"]),
+			exportExpression: new SyncBailHook(["statement", "declaration"]),
+			exportSpecifier: new SyncBailHook([
+				"statement",
+				"identifierName",
+				"exportName",
+				"index"
+			]),
+			exportImportSpecifier: new SyncBailHook([
+				"statement",
+				"source",
+				"identifierName",
+				"exportName",
+				"index"
+			]),
+			varDeclaration: new HookMap(() => new SyncBailHook(["declaration"])),
+			varDeclarationLet: new HookMap(() => new SyncBailHook(["declaration"])),
+			varDeclarationConst: new HookMap(() => new SyncBailHook(["declaration"])),
+			varDeclarationVar: new HookMap(() => new SyncBailHook(["declaration"])),
+			canRename: new HookMap(() => new SyncBailHook(["initExpression"])),
+			rename: new HookMap(() => new SyncBailHook(["initExpression"])),
+			assigned: new HookMap(() => new SyncBailHook(["expression"])),
+			assign: new HookMap(() => new SyncBailHook(["expression"])),
+			typeof: new HookMap(() => new SyncBailHook(["expression"])),
+			importCall: new SyncBailHook(["expression"]),
+			call: new HookMap(() => new SyncBailHook(["expression"])),
+			callAnyMember: new HookMap(() => new SyncBailHook(["expression"])),
+			new: new HookMap(() => new SyncBailHook(["expression"])),
+			expression: new HookMap(() => new SyncBailHook(["expression"])),
+			expressionAnyMember: new HookMap(() => new SyncBailHook(["expression"])),
+			expressionConditionalOperator: new SyncBailHook(["expression"]),
+			expressionLogicalOperator: new SyncBailHook(["expression"]),
+			program: new SyncBailHook(["ast", "comments"])
+		};
+		const HOOK_MAP_COMPAT_CONFIG = {
+			evaluateTypeof: /^evaluate typeof (.+)$/,
+			evaluateIdentifier: /^evaluate Identifier (.+)$/,
+			evaluateDefinedIdentifier: /^evaluate defined Identifier (.+)$/,
+			evaluateCallExpressionMember: /^evaluate CallExpression .(.+)$/,
+			evaluate: /^evaluate (.+)$/,
+			label: /^label (.+)$/,
+			varDeclarationLet: /^var-let (.+)$/,
+			varDeclarationConst: /^var-const (.+)$/,
+			varDeclarationVar: /^var-var (.+)$/,
+			varDeclaration: /^var (.+)$/,
+			canRename: /^can-rename (.+)$/,
+			rename: /^rename (.+)$/,
+			typeof: /^typeof (.+)$/,
+			assigned: /^assigned (.+)$/,
+			assign: /^assign (.+)$/,
+			callAnyMember: /^call (.+)\.\*$/,
+			call: /^call (.+)$/,
+			new: /^new (.+)$/,
+			expressionConditionalOperator: /^expression \?:$/,
+			expressionAnyMember: /^expression (.+)\.\*$/,
+			expression: /^expression (.+)$/
+		};
+		this._pluginCompat.tap("Parser", options => {
+			for (const name of Object.keys(HOOK_MAP_COMPAT_CONFIG)) {
+				const regexp = HOOK_MAP_COMPAT_CONFIG[name];
+				const match = regexp.exec(options.name);
+				if (match) {
+					if (match[1]) {
+						this.hooks[name].tap(
+							match[1],
+							options.fn.name || "unnamed compat plugin",
+							options.fn.bind(this)
+						);
+					} else {
+						this.hooks[name].tap(
+							options.fn.name || "unnamed compat plugin",
+							options.fn.bind(this)
+						);
+					}
+					return true;
+				}
+			}
+		});
+		this.options = options;
+		this.sourceType = sourceType;
+		this.scope = undefined;
+		this.state = undefined;
+		this.comments = undefined;
+		this.initializeEvaluating();
+	}
+
+	initializeEvaluating() {
+		this.hooks.evaluate.for("Literal").tap("Parser", expr => {
+			switch (typeof expr.value) {
+				case "number":
+					return new BasicEvaluatedExpression()
+						.setNumber(expr.value)
+						.setRange(expr.range);
+				case "string":
+					return new BasicEvaluatedExpression()
+						.setString(expr.value)
+						.setRange(expr.range);
+				case "boolean":
+					return new BasicEvaluatedExpression()
+						.setBoolean(expr.value)
+						.setRange(expr.range);
+			}
+			if (expr.value === null) {
+				return new BasicEvaluatedExpression().setNull().setRange(expr.range);
+			}
+			if (expr.value instanceof RegExp) {
+				return new BasicEvaluatedExpression()
+					.setRegExp(expr.value)
+					.setRange(expr.range);
+			}
+		});
+		this.hooks.evaluate.for("LogicalExpression").tap("Parser", expr => {
+			let left;
+			let leftAsBool;
+			let right;
+			if (expr.operator === "&&") {
+				left = this.evaluateExpression(expr.left);
+				leftAsBool = left && left.asBool();
+				if (leftAsBool === false) return left.setRange(expr.range);
+				if (leftAsBool !== true) return;
+				right = this.evaluateExpression(expr.right);
+				return right.setRange(expr.range);
+			} else if (expr.operator === "||") {
+				left = this.evaluateExpression(expr.left);
+				leftAsBool = left && left.asBool();
+				if (leftAsBool === true) return left.setRange(expr.range);
+				if (leftAsBool !== false) return;
+				right = this.evaluateExpression(expr.right);
+				return right.setRange(expr.range);
+			}
+		});
+		this.hooks.evaluate.for("BinaryExpression").tap("Parser", expr => {
+			let left;
+			let right;
+			let res;
+			if (expr.operator === "+") {
+				left = this.evaluateExpression(expr.left);
+				right = this.evaluateExpression(expr.right);
+				if (!left || !right) return;
+				res = new BasicEvaluatedExpression();
+				if (left.isString()) {
+					if (right.isString()) {
+						res.setString(left.string + right.string);
+					} else if (right.isNumber()) {
+						res.setString(left.string + right.number);
+					} else if (
+						right.isWrapped() &&
+						right.prefix &&
+						right.prefix.isString()
+					) {
+						// "left" + ("prefix" + inner + "postfix")
+						// => ("leftprefix" + inner + "postfix")
+						res.setWrapped(
+							new BasicEvaluatedExpression()
+								.setString(left.string + right.prefix.string)
+								.setRange(joinRanges(left.range, right.prefix.range)),
+							right.postfix,
+							right.wrappedInnerExpressions
+						);
+					} else if (right.isWrapped()) {
+						// "left" + ([null] + inner + "postfix")
+						// => ("left" + inner + "postfix")
+						res.setWrapped(left, right.postfix, right.wrappedInnerExpressions);
+					} else {
+						// "left" + expr
+						// => ("left" + expr + "")
+						res.setWrapped(left, null, [right]);
+					}
+				} else if (left.isNumber()) {
+					if (right.isString()) {
+						res.setString(left.number + right.string);
+					} else if (right.isNumber()) {
+						res.setNumber(left.number + right.number);
+					} else {
+						return;
+					}
+				} else if (left.isWrapped()) {
+					if (left.postfix && left.postfix.isString() && right.isString()) {
+						// ("prefix" + inner + "postfix") + "right"
+						// => ("prefix" + inner + "postfixright")
+						res.setWrapped(
+							left.prefix,
+							new BasicEvaluatedExpression()
+								.setString(left.postfix.string + right.string)
+								.setRange(joinRanges(left.postfix.range, right.range)),
+							left.wrappedInnerExpressions
+						);
+					} else if (
+						left.postfix &&
+						left.postfix.isString() &&
+						right.isNumber()
+					) {
+						// ("prefix" + inner + "postfix") + 123
+						// => ("prefix" + inner + "postfix123")
+						res.setWrapped(
+							left.prefix,
+							new BasicEvaluatedExpression()
+								.setString(left.postfix.string + right.number)
+								.setRange(joinRanges(left.postfix.range, right.range)),
+							left.wrappedInnerExpressions
+						);
+					} else if (right.isString()) {
+						// ("prefix" + inner + [null]) + "right"
+						// => ("prefix" + inner + "right")
+						res.setWrapped(left.prefix, right, left.wrappedInnerExpressions);
+					} else if (right.isNumber()) {
+						// ("prefix" + inner + [null]) + 123
+						// => ("prefix" + inner + "123")
+						res.setWrapped(
+							left.prefix,
+							new BasicEvaluatedExpression()
+								.setString(right.number + "")
+								.setRange(right.range),
+							left.wrappedInnerExpressions
+						);
+					} else if (right.isWrapped()) {
+						// ("prefix1" + inner1 + "postfix1") + ("prefix2" + inner2 + "postfix2")
+						// ("prefix1" + inner1 + "postfix1" + "prefix2" + inner2 + "postfix2")
+						res.setWrapped(
+							left.prefix,
+							right.postfix,
+							left.wrappedInnerExpressions &&
+								right.wrappedInnerExpressions &&
+								left.wrappedInnerExpressions
+									.concat(left.postfix ? [left.postfix] : [])
+									.concat(right.prefix ? [right.prefix] : [])
+									.concat(right.wrappedInnerExpressions)
+						);
+					} else {
+						// ("prefix" + inner + postfix) + expr
+						// => ("prefix" + inner + postfix + expr + [null])
+						res.setWrapped(
+							left.prefix,
+							null,
+							left.wrappedInnerExpressions &&
+								left.wrappedInnerExpressions.concat(
+									left.postfix ? [left.postfix, right] : [right]
+								)
+						);
+					}
+				} else {
+					if (right.isString()) {
+						// left + "right"
+						// => ([null] + left + "right")
+						res.setWrapped(null, right, [left]);
+					} else if (right.isWrapped()) {
+						// left + (prefix + inner + "postfix")
+						// => ([null] + left + prefix + inner + "postfix")
+						res.setWrapped(
+							null,
+							right.postfix,
+							right.wrappedInnerExpressions &&
+								(right.prefix ? [left, right.prefix] : [left]).concat(
+									right.wrappedInnerExpressions
+								)
+						);
+					} else {
+						return;
+					}
+				}
+				res.setRange(expr.range);
+				return res;
+			} else if (expr.operator === "-") {
+				left = this.evaluateExpression(expr.left);
+				right = this.evaluateExpression(expr.right);
+				if (!left || !right) return;
+				if (!left.isNumber() || !right.isNumber()) return;
+				res = new BasicEvaluatedExpression();
+				res.setNumber(left.number - right.number);
+				res.setRange(expr.range);
+				return res;
+			} else if (expr.operator === "*") {
+				left = this.evaluateExpression(expr.left);
+				right = this.evaluateExpression(expr.right);
+				if (!left || !right) return;
+				if (!left.isNumber() || !right.isNumber()) return;
+				res = new BasicEvaluatedExpression();
+				res.setNumber(left.number * right.number);
+				res.setRange(expr.range);
+				return res;
+			} else if (expr.operator === "/") {
+				left = this.evaluateExpression(expr.left);
+				right = this.evaluateExpression(expr.right);
+				if (!left || !right) return;
+				if (!left.isNumber() || !right.isNumber()) return;
+				res = new BasicEvaluatedExpression();
+				res.setNumber(left.number / right.number);
+				res.setRange(expr.range);
+				return res;
+			} else if (expr.operator === "**") {
+				left = this.evaluateExpression(expr.left);
+				right = this.evaluateExpression(expr.right);
+				if (!left || !right) return;
+				if (!left.isNumber() || !right.isNumber()) return;
+				res = new BasicEvaluatedExpression();
+				res.setNumber(Math.pow(left.number, right.number));
+				res.setRange(expr.range);
+				return res;
+			} else if (expr.operator === "==" || expr.operator === "===") {
+				left = this.evaluateExpression(expr.left);
+				right = this.evaluateExpression(expr.right);
+				if (!left || !right) return;
+				res = new BasicEvaluatedExpression();
+				res.setRange(expr.range);
+				if (left.isString() && right.isString()) {
+					return res.setBoolean(left.string === right.string);
+				} else if (left.isNumber() && right.isNumber()) {
+					return res.setBoolean(left.number === right.number);
+				} else if (left.isBoolean() && right.isBoolean()) {
+					return res.setBoolean(left.bool === right.bool);
+				}
+			} else if (expr.operator === "!=" || expr.operator === "!==") {
+				left = this.evaluateExpression(expr.left);
+				right = this.evaluateExpression(expr.right);
+				if (!left || !right) return;
+				res = new BasicEvaluatedExpression();
+				res.setRange(expr.range);
+				if (left.isString() && right.isString()) {
+					return res.setBoolean(left.string !== right.string);
+				} else if (left.isNumber() && right.isNumber()) {
+					return res.setBoolean(left.number !== right.number);
+				} else if (left.isBoolean() && right.isBoolean()) {
+					return res.setBoolean(left.bool !== right.bool);
+				}
+			} else if (expr.operator === "&") {
+				left = this.evaluateExpression(expr.left);
+				right = this.evaluateExpression(expr.right);
+				if (!left || !right) return;
+				if (!left.isNumber() || !right.isNumber()) return;
+				res = new BasicEvaluatedExpression();
+				res.setNumber(left.number & right.number);
+				res.setRange(expr.range);
+				return res;
+			} else if (expr.operator === "|") {
+				left = this.evaluateExpression(expr.left);
+				right = this.evaluateExpression(expr.right);
+				if (!left || !right) return;
+				if (!left.isNumber() || !right.isNumber()) return;
+				res = new BasicEvaluatedExpression();
+				res.setNumber(left.number | right.number);
+				res.setRange(expr.range);
+				return res;
+			} else if (expr.operator === "^") {
+				left = this.evaluateExpression(expr.left);
+				right = this.evaluateExpression(expr.right);
+				if (!left || !right) return;
+				if (!left.isNumber() || !right.isNumber()) return;
+				res = new BasicEvaluatedExpression();
+				res.setNumber(left.number ^ right.number);
+				res.setRange(expr.range);
+				return res;
+			} else if (expr.operator === ">>>") {
+				left = this.evaluateExpression(expr.left);
+				right = this.evaluateExpression(expr.right);
+				if (!left || !right) return;
+				if (!left.isNumber() || !right.isNumber()) return;
+				res = new BasicEvaluatedExpression();
+				res.setNumber(left.number >>> right.number);
+				res.setRange(expr.range);
+				return res;
+			} else if (expr.operator === ">>") {
+				left = this.evaluateExpression(expr.left);
+				right = this.evaluateExpression(expr.right);
+				if (!left || !right) return;
+				if (!left.isNumber() || !right.isNumber()) return;
+				res = new BasicEvaluatedExpression();
+				res.setNumber(left.number >> right.number);
+				res.setRange(expr.range);
+				return res;
+			} else if (expr.operator === "<<") {
+				left = this.evaluateExpression(expr.left);
+				right = this.evaluateExpression(expr.right);
+				if (!left || !right) return;
+				if (!left.isNumber() || !right.isNumber()) return;
+				res = new BasicEvaluatedExpression();
+				res.setNumber(left.number << right.number);
+				res.setRange(expr.range);
+				return res;
+			}
+		});
+		this.hooks.evaluate.for("UnaryExpression").tap("Parser", expr => {
+			if (expr.operator === "typeof") {
+				let res;
+				let name;
+				if (expr.argument.type === "Identifier") {
+					name =
+						this.scope.renames.get(expr.argument.name) || expr.argument.name;
+					if (!this.scope.definitions.has(name)) {
+						const hook = this.hooks.evaluateTypeof.get(name);
+						if (hook !== undefined) {
+							res = hook.call(expr);
+							if (res !== undefined) return res;
+						}
+					}
+				}
+				if (expr.argument.type === "MemberExpression") {
+					const exprName = this.getNameForExpression(expr.argument);
+					if (exprName && exprName.free) {
+						const hook = this.hooks.evaluateTypeof.get(exprName.name);
+						if (hook !== undefined) {
+							res = hook.call(expr);
+							if (res !== undefined) return res;
+						}
+					}
+				}
+				if (expr.argument.type === "FunctionExpression") {
+					return new BasicEvaluatedExpression()
+						.setString("function")
+						.setRange(expr.range);
+				}
+				const arg = this.evaluateExpression(expr.argument);
+				if (arg.isString() || arg.isWrapped()) {
+					return new BasicEvaluatedExpression()
+						.setString("string")
+						.setRange(expr.range);
+				}
+				if (arg.isNumber()) {
+					return new BasicEvaluatedExpression()
+						.setString("number")
+						.setRange(expr.range);
+				}
+				if (arg.isBoolean()) {
+					return new BasicEvaluatedExpression()
+						.setString("boolean")
+						.setRange(expr.range);
+				}
+				if (arg.isArray() || arg.isConstArray() || arg.isRegExp()) {
+					return new BasicEvaluatedExpression()
+						.setString("object")
+						.setRange(expr.range);
+				}
+			} else if (expr.operator === "!") {
+				const argument = this.evaluateExpression(expr.argument);
+				if (!argument) return;
+				if (argument.isBoolean()) {
+					return new BasicEvaluatedExpression()
+						.setBoolean(!argument.bool)
+						.setRange(expr.range);
+				}
+				if (argument.isTruthy()) {
+					return new BasicEvaluatedExpression()
+						.setBoolean(false)
+						.setRange(expr.range);
+				}
+				if (argument.isFalsy()) {
+					return new BasicEvaluatedExpression()
+						.setBoolean(true)
+						.setRange(expr.range);
+				}
+				if (argument.isString()) {
+					return new BasicEvaluatedExpression()
+						.setBoolean(!argument.string)
+						.setRange(expr.range);
+				}
+				if (argument.isNumber()) {
+					return new BasicEvaluatedExpression()
+						.setBoolean(!argument.number)
+						.setRange(expr.range);
+				}
+			} else if (expr.operator === "~") {
+				const argument = this.evaluateExpression(expr.argument);
+				if (!argument) return;
+				if (!argument.isNumber()) return;
+				const res = new BasicEvaluatedExpression();
+				res.setNumber(~argument.number);
+				res.setRange(expr.range);
+				return res;
+			}
+		});
+		this.hooks.evaluateTypeof.for("undefined").tap("Parser", expr => {
+			return new BasicEvaluatedExpression()
+				.setString("undefined")
+				.setRange(expr.range);
+		});
+		this.hooks.evaluate.for("Identifier").tap("Parser", expr => {
+			const name = this.scope.renames.get(expr.name) || expr.name;
+			if (!this.scope.definitions.has(expr.name)) {
+				const hook = this.hooks.evaluateIdentifier.get(name);
+				if (hook !== undefined) {
+					const result = hook.call(expr);
+					if (result) return result;
+				}
+				return new BasicEvaluatedExpression()
+					.setIdentifier(name)
+					.setRange(expr.range);
+			} else {
+				const hook = this.hooks.evaluateDefinedIdentifier.get(name);
+				if (hook !== undefined) {
+					return hook.call(expr);
+				}
+			}
+		});
+		this.hooks.evaluate.for("ThisExpression").tap("Parser", expr => {
+			const name = this.scope.renames.get("this");
+			if (name) {
+				const hook = this.hooks.evaluateIdentifier.get(name);
+				if (hook !== undefined) {
+					const result = hook.call(expr);
+					if (result) return result;
+				}
+				return new BasicEvaluatedExpression()
+					.setIdentifier(name)
+					.setRange(expr.range);
+			}
+		});
+		this.hooks.evaluate.for("MemberExpression").tap("Parser", expression => {
+			let exprName = this.getNameForExpression(expression);
+			if (exprName) {
+				if (exprName.free) {
+					const hook = this.hooks.evaluateIdentifier.get(exprName.name);
+					if (hook !== undefined) {
+						const result = hook.call(expression);
+						if (result) return result;
+					}
+					return new BasicEvaluatedExpression()
+						.setIdentifier(exprName.name)
+						.setRange(expression.range);
+				} else {
+					const hook = this.hooks.evaluateDefinedIdentifier.get(exprName.name);
+					if (hook !== undefined) {
+						return hook.call(expression);
+					}
+				}
+			}
+		});
+		this.hooks.evaluate.for("CallExpression").tap("Parser", expr => {
+			if (expr.callee.type !== "MemberExpression") return;
+			if (
+				expr.callee.property.type !==
+				(expr.callee.computed ? "Literal" : "Identifier")
+			)
+				return;
+			const param = this.evaluateExpression(expr.callee.object);
+			if (!param) return;
+			const property = expr.callee.property.name || expr.callee.property.value;
+			const hook = this.hooks.evaluateCallExpressionMember.get(property);
+			if (hook !== undefined) {
+				return hook.call(expr, param);
+			}
+		});
+		this.hooks.evaluateCallExpressionMember
+			.for("replace")
+			.tap("Parser", (expr, param) => {
+				if (!param.isString()) return;
+				if (expr.arguments.length !== 2) return;
+				let arg1 = this.evaluateExpression(expr.arguments[0]);
+				let arg2 = this.evaluateExpression(expr.arguments[1]);
+				if (!arg1.isString() && !arg1.isRegExp()) return;
+				arg1 = arg1.regExp || arg1.string;
+				if (!arg2.isString()) return;
+				arg2 = arg2.string;
+				return new BasicEvaluatedExpression()
+					.setString(param.string.replace(arg1, arg2))
+					.setRange(expr.range);
+			});
+		["substr", "substring"].forEach(fn => {
+			this.hooks.evaluateCallExpressionMember
+				.for(fn)
+				.tap("Parser", (expr, param) => {
+					if (!param.isString()) return;
+					let arg1;
+					let result,
+						str = param.string;
+					switch (expr.arguments.length) {
+						case 1:
+							arg1 = this.evaluateExpression(expr.arguments[0]);
+							if (!arg1.isNumber()) return;
+							result = str[fn](arg1.number);
+							break;
+						case 2: {
+							arg1 = this.evaluateExpression(expr.arguments[0]);
+							const arg2 = this.evaluateExpression(expr.arguments[1]);
+							if (!arg1.isNumber()) return;
+							if (!arg2.isNumber()) return;
+							result = str[fn](arg1.number, arg2.number);
+							break;
+						}
+						default:
+							return;
+					}
+					return new BasicEvaluatedExpression()
+						.setString(result)
+						.setRange(expr.range);
+				});
+		});
+
+		/**
+		 * @param {string} kind "cooked" | "raw"
+		 * @param {TODO} templateLiteralExpr TemplateLiteral expr
+		 * @returns {{quasis: BasicEvaluatedExpression[], parts: BasicEvaluatedExpression[]}} Simplified template
+		 */
+		const getSimplifiedTemplateResult = (kind, templateLiteralExpr) => {
+			const quasis = [];
+			const parts = [];
+
+			for (let i = 0; i < templateLiteralExpr.quasis.length; i++) {
+				const quasiExpr = templateLiteralExpr.quasis[i];
+				const quasi = quasiExpr.value[kind];
+
+				if (i > 0) {
+					const prevExpr = parts[parts.length - 1];
+					const expr = this.evaluateExpression(
+						templateLiteralExpr.expressions[i - 1]
+					);
+					const exprAsString = expr.asString();
+					if (typeof exprAsString === "string") {
+						// We can merge quasi + expr + quasi when expr
+						// is a const string
+
+						prevExpr.setString(prevExpr.string + exprAsString + quasi);
+						prevExpr.setRange([prevExpr.range[0], quasiExpr.range[1]]);
+						// We unset the expression as it doesn't match to a single expression
+						prevExpr.setExpression(undefined);
+						continue;
+					}
+					parts.push(expr);
+				}
+
+				const part = new BasicEvaluatedExpression()
+					.setString(quasi)
+					.setRange(quasiExpr.range)
+					.setExpression(quasiExpr);
+				quasis.push(part);
+				parts.push(part);
+			}
+			return {
+				quasis,
+				parts
+			};
+		};
+
+		this.hooks.evaluate.for("TemplateLiteral").tap("Parser", node => {
+			const { quasis, parts } = getSimplifiedTemplateResult("cooked", node);
+			if (parts.length === 1) {
+				return parts[0].setRange(node.range);
+			}
+			return new BasicEvaluatedExpression()
+				.setTemplateString(quasis, parts, "cooked")
+				.setRange(node.range);
+		});
+		this.hooks.evaluate.for("TaggedTemplateExpression").tap("Parser", node => {
+			if (this.evaluateExpression(node.tag).identifier !== "String.raw") return;
+			const { quasis, parts } = getSimplifiedTemplateResult("raw", node.quasi);
+			if (parts.length === 1) {
+				return parts[0].setRange(node.range);
+			}
+			return new BasicEvaluatedExpression()
+				.setTemplateString(quasis, parts, "raw")
+				.setRange(node.range);
+		});
+
+		this.hooks.evaluateCallExpressionMember
+			.for("concat")
+			.tap("Parser", (expr, param) => {
+				if (!param.isString() && !param.isWrapped()) return;
+
+				let stringSuffix = null;
+				let hasUnknownParams = false;
+				for (let i = expr.arguments.length - 1; i >= 0; i--) {
+					const argExpr = this.evaluateExpression(expr.arguments[i]);
+					if (!argExpr.isString() && !argExpr.isNumber()) {
+						hasUnknownParams = true;
+						break;
+					}
+
+					const value = argExpr.isString()
+						? argExpr.string
+						: "" + argExpr.number;
+
+					const newString = value + (stringSuffix ? stringSuffix.string : "");
+					const newRange = [
+						argExpr.range[0],
+						(stringSuffix || argExpr).range[1]
+					];
+					stringSuffix = new BasicEvaluatedExpression()
+						.setString(newString)
+						.setRange(newRange);
+				}
+
+				if (hasUnknownParams) {
+					const prefix = param.isString() ? param : param.prefix;
+					return new BasicEvaluatedExpression()
+						.setWrapped(prefix, stringSuffix)
+						.setRange(expr.range);
+				} else if (param.isWrapped()) {
+					const postfix = stringSuffix || param.postfix;
+					return new BasicEvaluatedExpression()
+						.setWrapped(param.prefix, postfix)
+						.setRange(expr.range);
+				} else {
+					const newString =
+						param.string + (stringSuffix ? stringSuffix.string : "");
+					return new BasicEvaluatedExpression()
+						.setString(newString)
+						.setRange(expr.range);
+				}
+			});
+		this.hooks.evaluateCallExpressionMember
+			.for("split")
+			.tap("Parser", (expr, param) => {
+				if (!param.isString()) return;
+				if (expr.arguments.length !== 1) return;
+				let result;
+				const arg = this.evaluateExpression(expr.arguments[0]);
+				if (arg.isString()) {
+					result = param.string.split(arg.string);
+				} else if (arg.isRegExp()) {
+					result = param.string.split(arg.regExp);
+				} else {
+					return;
+				}
+				return new BasicEvaluatedExpression()
+					.setArray(result)
+					.setRange(expr.range);
+			});
+		this.hooks.evaluate.for("ConditionalExpression").tap("Parser", expr => {
+			const condition = this.evaluateExpression(expr.test);
+			const conditionValue = condition.asBool();
+			let res;
+			if (conditionValue === undefined) {
+				const consequent = this.evaluateExpression(expr.consequent);
+				const alternate = this.evaluateExpression(expr.alternate);
+				if (!consequent || !alternate) return;
+				res = new BasicEvaluatedExpression();
+				if (consequent.isConditional()) {
+					res.setOptions(consequent.options);
+				} else {
+					res.setOptions([consequent]);
+				}
+				if (alternate.isConditional()) {
+					res.addOptions(alternate.options);
+				} else {
+					res.addOptions([alternate]);
+				}
+			} else {
+				res = this.evaluateExpression(
+					conditionValue ? expr.consequent : expr.alternate
+				);
+			}
+			res.setRange(expr.range);
+			return res;
+		});
+		this.hooks.evaluate.for("ArrayExpression").tap("Parser", expr => {
+			const items = expr.elements.map(element => {
+				return element !== null && this.evaluateExpression(element);
+			});
+			if (!items.every(Boolean)) return;
+			return new BasicEvaluatedExpression()
+				.setItems(items)
+				.setRange(expr.range);
+		});
+	}
+
+	getRenameIdentifier(expr) {
+		const result = this.evaluateExpression(expr);
+		if (result && result.isIdentifier()) {
+			return result.identifier;
+		}
+	}
+
+	walkClass(classy) {
+		if (classy.superClass) this.walkExpression(classy.superClass);
+		if (classy.body && classy.body.type === "ClassBody") {
+			const wasTopLevel = this.scope.topLevelScope;
+			this.scope.topLevelScope = false;
+			for (const methodDefinition of classy.body.body) {
+				if (methodDefinition.type === "MethodDefinition") {
+					this.walkMethodDefinition(methodDefinition);
+				}
+			}
+			this.scope.topLevelScope = wasTopLevel;
+		}
+	}
+
+	walkMethodDefinition(methodDefinition) {
+		if (methodDefinition.computed && methodDefinition.key) {
+			this.walkExpression(methodDefinition.key);
+		}
+		if (methodDefinition.value) {
+			this.walkExpression(methodDefinition.value);
+		}
+	}
+
+	// Prewalking iterates the scope for variable declarations
+	prewalkStatements(statements) {
+		for (let index = 0, len = statements.length; index < len; index++) {
+			const statement = statements[index];
+			this.prewalkStatement(statement);
+		}
+	}
+
+	// Block-Prewalking iterates the scope for block variable declarations
+	blockPrewalkStatements(statements) {
+		for (let index = 0, len = statements.length; index < len; index++) {
+			const statement = statements[index];
+			this.blockPrewalkStatement(statement);
+		}
+	}
+
+	// Walking iterates the statements and expressions and processes them
+	walkStatements(statements) {
+		for (let index = 0, len = statements.length; index < len; index++) {
+			const statement = statements[index];
+			this.walkStatement(statement);
+		}
+	}
+
+	prewalkStatement(statement) {
+		switch (statement.type) {
+			case "BlockStatement":
+				this.prewalkBlockStatement(statement);
+				break;
+			case "DoWhileStatement":
+				this.prewalkDoWhileStatement(statement);
+				break;
+			case "ExportAllDeclaration":
+				this.prewalkExportAllDeclaration(statement);
+				break;
+			case "ExportDefaultDeclaration":
+				this.prewalkExportDefaultDeclaration(statement);
+				break;
+			case "ExportNamedDeclaration":
+				this.prewalkExportNamedDeclaration(statement);
+				break;
+			case "ForInStatement":
+				this.prewalkForInStatement(statement);
+				break;
+			case "ForOfStatement":
+				this.prewalkForOfStatement(statement);
+				break;
+			case "ForStatement":
+				this.prewalkForStatement(statement);
+				break;
+			case "FunctionDeclaration":
+				this.prewalkFunctionDeclaration(statement);
+				break;
+			case "IfStatement":
+				this.prewalkIfStatement(statement);
+				break;
+			case "ImportDeclaration":
+				this.prewalkImportDeclaration(statement);
+				break;
+			case "LabeledStatement":
+				this.prewalkLabeledStatement(statement);
+				break;
+			case "SwitchStatement":
+				this.prewalkSwitchStatement(statement);
+				break;
+			case "TryStatement":
+				this.prewalkTryStatement(statement);
+				break;
+			case "VariableDeclaration":
+				this.prewalkVariableDeclaration(statement);
+				break;
+			case "WhileStatement":
+				this.prewalkWhileStatement(statement);
+				break;
+			case "WithStatement":
+				this.prewalkWithStatement(statement);
+				break;
+		}
+	}
+
+	blockPrewalkStatement(statement) {
+		switch (statement.type) {
+			case "VariableDeclaration":
+				this.blockPrewalkVariableDeclaration(statement);
+				break;
+			case "ExportDefaultDeclaration":
+				this.blockPrewalkExportDefaultDeclaration(statement);
+				break;
+			case "ExportNamedDeclaration":
+				this.blockPrewalkExportNamedDeclaration(statement);
+				break;
+			case "ClassDeclaration":
+				this.blockPrewalkClassDeclaration(statement);
+				break;
+		}
+	}
+
+	walkStatement(statement) {
+		if (this.hooks.statement.call(statement) !== undefined) return;
+		switch (statement.type) {
+			case "BlockStatement":
+				this.walkBlockStatement(statement);
+				break;
+			case "ClassDeclaration":
+				this.walkClassDeclaration(statement);
+				break;
+			case "DoWhileStatement":
+				this.walkDoWhileStatement(statement);
+				break;
+			case "ExportDefaultDeclaration":
+				this.walkExportDefaultDeclaration(statement);
+				break;
+			case "ExportNamedDeclaration":
+				this.walkExportNamedDeclaration(statement);
+				break;
+			case "ExpressionStatement":
+				this.walkExpressionStatement(statement);
+				break;
+			case "ForInStatement":
+				this.walkForInStatement(statement);
+				break;
+			case "ForOfStatement":
+				this.walkForOfStatement(statement);
+				break;
+			case "ForStatement":
+				this.walkForStatement(statement);
+				break;
+			case "FunctionDeclaration":
+				this.walkFunctionDeclaration(statement);
+				break;
+			case "IfStatement":
+				this.walkIfStatement(statement);
+				break;
+			case "LabeledStatement":
+				this.walkLabeledStatement(statement);
+				break;
+			case "ReturnStatement":
+				this.walkReturnStatement(statement);
+				break;
+			case "SwitchStatement":
+				this.walkSwitchStatement(statement);
+				break;
+			case "ThrowStatement":
+				this.walkThrowStatement(statement);
+				break;
+			case "TryStatement":
+				this.walkTryStatement(statement);
+				break;
+			case "VariableDeclaration":
+				this.walkVariableDeclaration(statement);
+				break;
+			case "WhileStatement":
+				this.walkWhileStatement(statement);
+				break;
+			case "WithStatement":
+				this.walkWithStatement(statement);
+				break;
+		}
+	}
+
+	// Real Statements
+	prewalkBlockStatement(statement) {
+		this.prewalkStatements(statement.body);
+	}
+
+	walkBlockStatement(statement) {
+		this.inBlockScope(() => {
+			const body = statement.body;
+			this.blockPrewalkStatements(body);
+			this.walkStatements(body);
+		});
+	}
+
+	walkExpressionStatement(statement) {
+		this.walkExpression(statement.expression);
+	}
+
+	prewalkIfStatement(statement) {
+		this.prewalkStatement(statement.consequent);
+		if (statement.alternate) {
+			this.prewalkStatement(statement.alternate);
+		}
+	}
+
+	walkIfStatement(statement) {
+		const result = this.hooks.statementIf.call(statement);
+		if (result === undefined) {
+			this.walkExpression(statement.test);
+			this.walkStatement(statement.consequent);
+			if (statement.alternate) {
+				this.walkStatement(statement.alternate);
+			}
+		} else {
+			if (result) {
+				this.walkStatement(statement.consequent);
+			} else if (statement.alternate) {
+				this.walkStatement(statement.alternate);
+			}
+		}
+	}
+
+	prewalkLabeledStatement(statement) {
+		this.prewalkStatement(statement.body);
+	}
+
+	walkLabeledStatement(statement) {
+		const hook = this.hooks.label.get(statement.label.name);
+		if (hook !== undefined) {
+			const result = hook.call(statement);
+			if (result === true) return;
+		}
+		this.walkStatement(statement.body);
+	}
+
+	prewalkWithStatement(statement) {
+		this.prewalkStatement(statement.body);
+	}
+
+	walkWithStatement(statement) {
+		this.walkExpression(statement.object);
+		this.walkStatement(statement.body);
+	}
+
+	prewalkSwitchStatement(statement) {
+		this.prewalkSwitchCases(statement.cases);
+	}
+
+	walkSwitchStatement(statement) {
+		this.walkExpression(statement.discriminant);
+		this.walkSwitchCases(statement.cases);
+	}
+
+	walkTerminatingStatement(statement) {
+		if (statement.argument) this.walkExpression(statement.argument);
+	}
+
+	walkReturnStatement(statement) {
+		this.walkTerminatingStatement(statement);
+	}
+
+	walkThrowStatement(statement) {
+		this.walkTerminatingStatement(statement);
+	}
+
+	prewalkTryStatement(statement) {
+		this.prewalkStatement(statement.block);
+	}
+
+	walkTryStatement(statement) {
+		if (this.scope.inTry) {
+			this.walkStatement(statement.block);
+		} else {
+			this.scope.inTry = true;
+			this.walkStatement(statement.block);
+			this.scope.inTry = false;
+		}
+		if (statement.handler) this.walkCatchClause(statement.handler);
+		if (statement.finalizer) this.walkStatement(statement.finalizer);
+	}
+
+	prewalkWhileStatement(statement) {
+		this.prewalkStatement(statement.body);
+	}
+
+	walkWhileStatement(statement) {
+		this.walkExpression(statement.test);
+		this.walkStatement(statement.body);
+	}
+
+	prewalkDoWhileStatement(statement) {
+		this.prewalkStatement(statement.body);
+	}
+
+	walkDoWhileStatement(statement) {
+		this.walkStatement(statement.body);
+		this.walkExpression(statement.test);
+	}
+
+	prewalkForStatement(statement) {
+		if (statement.init) {
+			if (statement.init.type === "VariableDeclaration") {
+				this.prewalkStatement(statement.init);
+			}
+		}
+		this.prewalkStatement(statement.body);
+	}
+
+	walkForStatement(statement) {
+		this.inBlockScope(() => {
+			if (statement.init) {
+				if (statement.init.type === "VariableDeclaration") {
+					this.blockPrewalkVariableDeclaration(statement.init);
+					this.walkStatement(statement.init);
+				} else {
+					this.walkExpression(statement.init);
+				}
+			}
+			if (statement.test) {
+				this.walkExpression(statement.test);
+			}
+			if (statement.update) {
+				this.walkExpression(statement.update);
+			}
+			const body = statement.body;
+			if (body.type === "BlockStatement") {
+				// no need to add additional scope
+				this.blockPrewalkStatements(body.body);
+				this.walkStatements(body.body);
+			} else {
+				this.walkStatement(body);
+			}
+		});
+	}
+
+	prewalkForInStatement(statement) {
+		if (statement.left.type === "VariableDeclaration") {
+			this.prewalkVariableDeclaration(statement.left);
+		}
+		this.prewalkStatement(statement.body);
+	}
+
+	walkForInStatement(statement) {
+		this.inBlockScope(() => {
+			if (statement.left.type === "VariableDeclaration") {
+				this.blockPrewalkVariableDeclaration(statement.left);
+				this.walkVariableDeclaration(statement.left);
+			} else {
+				this.walkPattern(statement.left);
+			}
+			this.walkExpression(statement.right);
+			const body = statement.body;
+			if (body.type === "BlockStatement") {
+				// no need to add additional scope
+				this.blockPrewalkStatements(body.body);
+				this.walkStatements(body.body);
+			} else {
+				this.walkStatement(body);
+			}
+		});
+	}
+
+	prewalkForOfStatement(statement) {
+		if (statement.left.type === "VariableDeclaration") {
+			this.prewalkVariableDeclaration(statement.left);
+		}
+		this.prewalkStatement(statement.body);
+	}
+
+	walkForOfStatement(statement) {
+		this.inBlockScope(() => {
+			if (statement.left.type === "VariableDeclaration") {
+				this.blockPrewalkVariableDeclaration(statement.left);
+				this.walkVariableDeclaration(statement.left);
+			} else {
+				this.walkPattern(statement.left);
+			}
+			this.walkExpression(statement.right);
+			const body = statement.body;
+			if (body.type === "BlockStatement") {
+				// no need to add additional scope
+				this.blockPrewalkStatements(body.body);
+				this.walkStatements(body.body);
+			} else {
+				this.walkStatement(body);
+			}
+		});
+	}
+
+	// Declarations
+	prewalkFunctionDeclaration(statement) {
+		if (statement.id) {
+			this.scope.renames.set(statement.id.name, null);
+			this.scope.definitions.add(statement.id.name);
+		}
+	}
+
+	walkFunctionDeclaration(statement) {
+		const wasTopLevel = this.scope.topLevelScope;
+		this.scope.topLevelScope = false;
+		this.inFunctionScope(true, statement.params, () => {
+			for (const param of statement.params) {
+				this.walkPattern(param);
+			}
+			if (statement.body.type === "BlockStatement") {
+				this.detectMode(statement.body.body);
+				this.prewalkStatement(statement.body);
+				this.walkStatement(statement.body);
+			} else {
+				this.walkExpression(statement.body);
+			}
+		});
+		this.scope.topLevelScope = wasTopLevel;
+	}
+
+	prewalkImportDeclaration(statement) {
+		const source = statement.source.value;
+		this.hooks.import.call(statement, source);
+		for (const specifier of statement.specifiers) {
+			const name = specifier.local.name;
+			this.scope.renames.set(name, null);
+			this.scope.definitions.add(name);
+			switch (specifier.type) {
+				case "ImportDefaultSpecifier":
+					this.hooks.importSpecifier.call(statement, source, "default", name);
+					break;
+				case "ImportSpecifier":
+					this.hooks.importSpecifier.call(
+						statement,
+						source,
+						specifier.imported.name,
+						name
+					);
+					break;
+				case "ImportNamespaceSpecifier":
+					this.hooks.importSpecifier.call(statement, source, null, name);
+					break;
+			}
+		}
+	}
+
+	enterDeclaration(declaration, onIdent) {
+		switch (declaration.type) {
+			case "VariableDeclaration":
+				for (const declarator of declaration.declarations) {
+					switch (declarator.type) {
+						case "VariableDeclarator": {
+							this.enterPattern(declarator.id, onIdent);
+							break;
+						}
+					}
+				}
+				break;
+			case "FunctionDeclaration":
+				this.enterPattern(declaration.id, onIdent);
+				break;
+			case "ClassDeclaration":
+				this.enterPattern(declaration.id, onIdent);
+				break;
+		}
+	}
+
+	blockPrewalkExportNamedDeclaration(statement) {
+		if (statement.declaration) {
+			this.blockPrewalkStatement(statement.declaration);
+		}
+	}
+
+	prewalkExportNamedDeclaration(statement) {
+		let source;
+		if (statement.source) {
+			source = statement.source.value;
+			this.hooks.exportImport.call(statement, source);
+		} else {
+			this.hooks.export.call(statement);
+		}
+		if (statement.declaration) {
+			if (
+				!this.hooks.exportDeclaration.call(statement, statement.declaration)
+			) {
+				this.prewalkStatement(statement.declaration);
+				let index = 0;
+				this.enterDeclaration(statement.declaration, def => {
+					this.hooks.exportSpecifier.call(statement, def, def, index++);
+				});
+			}
+		}
+		if (statement.specifiers) {
+			for (
+				let specifierIndex = 0;
+				specifierIndex < statement.specifiers.length;
+				specifierIndex++
+			) {
+				const specifier = statement.specifiers[specifierIndex];
+				switch (specifier.type) {
+					case "ExportSpecifier": {
+						const name = specifier.exported.name;
+						if (source) {
+							this.hooks.exportImportSpecifier.call(
+								statement,
+								source,
+								specifier.local.name,
+								name,
+								specifierIndex
+							);
+						} else {
+							this.hooks.exportSpecifier.call(
+								statement,
+								specifier.local.name,
+								name,
+								specifierIndex
+							);
+						}
+						break;
+					}
+				}
+			}
+		}
+	}
+
+	walkExportNamedDeclaration(statement) {
+		if (statement.declaration) {
+			this.walkStatement(statement.declaration);
+		}
+	}
+
+	blockPrewalkExportDefaultDeclaration(statement) {
+		if (statement.declaration.type === "ClassDeclaration") {
+			this.blockPrewalkClassDeclaration(statement.declaration);
+		}
+	}
+
+	prewalkExportDefaultDeclaration(statement) {
+		this.prewalkStatement(statement.declaration);
+		if (
+			statement.declaration.id &&
+			statement.declaration.type !== "FunctionExpression" &&
+			statement.declaration.type !== "ClassExpression"
+		) {
+			this.hooks.exportSpecifier.call(
+				statement,
+				statement.declaration.id.name,
+				"default"
+			);
+		}
+	}
+
+	walkExportDefaultDeclaration(statement) {
+		this.hooks.export.call(statement);
+		if (
+			statement.declaration.id &&
+			statement.declaration.type !== "FunctionExpression" &&
+			statement.declaration.type !== "ClassExpression"
+		) {
+			if (
+				!this.hooks.exportDeclaration.call(statement, statement.declaration)
+			) {
+				this.walkStatement(statement.declaration);
+			}
+		} else {
+			// Acorn parses `export default function() {}` as `FunctionDeclaration` and
+			// `export default class {}` as `ClassDeclaration`, both with `id = null`.
+			// These nodes must be treated as expressions.
+			if (statement.declaration.type === "FunctionDeclaration") {
+				this.walkFunctionDeclaration(statement.declaration);
+			} else if (statement.declaration.type === "ClassDeclaration") {
+				this.walkClassDeclaration(statement.declaration);
+			} else {
+				this.walkExpression(statement.declaration);
+			}
+			if (!this.hooks.exportExpression.call(statement, statement.declaration)) {
+				this.hooks.exportSpecifier.call(
+					statement,
+					statement.declaration,
+					"default"
+				);
+			}
+		}
+	}
+
+	prewalkExportAllDeclaration(statement) {
+		const source = statement.source.value;
+		this.hooks.exportImport.call(statement, source);
+		this.hooks.exportImportSpecifier.call(statement, source, null, null, 0);
+	}
+
+	prewalkVariableDeclaration(statement) {
+		if (statement.kind !== "var") return;
+		this._prewalkVariableDeclaration(statement, this.hooks.varDeclarationVar);
+	}
+
+	blockPrewalkVariableDeclaration(statement) {
+		if (statement.kind === "var") return;
+		const hookMap =
+			statement.kind === "const"
+				? this.hooks.varDeclarationConst
+				: this.hooks.varDeclarationLet;
+		this._prewalkVariableDeclaration(statement, hookMap);
+	}
+
+	_prewalkVariableDeclaration(statement, hookMap) {
+		for (const declarator of statement.declarations) {
+			switch (declarator.type) {
+				case "VariableDeclarator": {
+					this.enterPattern(declarator.id, (name, decl) => {
+						let hook = hookMap.get(name);
+						if (hook === undefined || !hook.call(decl)) {
+							hook = this.hooks.varDeclaration.get(name);
+							if (hook === undefined || !hook.call(decl)) {
+								this.scope.renames.set(name, null);
+								this.scope.definitions.add(name);
+							}
+						}
+					});
+					break;
+				}
+			}
+		}
+	}
+
+	walkVariableDeclaration(statement) {
+		for (const declarator of statement.declarations) {
+			switch (declarator.type) {
+				case "VariableDeclarator": {
+					const renameIdentifier =
+						declarator.init && this.getRenameIdentifier(declarator.init);
+					if (renameIdentifier && declarator.id.type === "Identifier") {
+						const hook = this.hooks.canRename.get(renameIdentifier);
+						if (hook !== undefined && hook.call(declarator.init)) {
+							// renaming with "var a = b;"
+							const hook = this.hooks.rename.get(renameIdentifier);
+							if (hook === undefined || !hook.call(declarator.init)) {
+								this.scope.renames.set(
+									declarator.id.name,
+									this.scope.renames.get(renameIdentifier) || renameIdentifier
+								);
+								this.scope.definitions.delete(declarator.id.name);
+							}
+							break;
+						}
+					}
+					this.walkPattern(declarator.id);
+					if (declarator.init) this.walkExpression(declarator.init);
+					break;
+				}
+			}
+		}
+	}
+
+	blockPrewalkClassDeclaration(statement) {
+		if (statement.id) {
+			this.scope.renames.set(statement.id.name, null);
+			this.scope.definitions.add(statement.id.name);
+		}
+	}
+
+	walkClassDeclaration(statement) {
+		this.walkClass(statement);
+	}
+
+	prewalkSwitchCases(switchCases) {
+		for (let index = 0, len = switchCases.length; index < len; index++) {
+			const switchCase = switchCases[index];
+			this.prewalkStatements(switchCase.consequent);
+		}
+	}
+
+	walkSwitchCases(switchCases) {
+		for (let index = 0, len = switchCases.length; index < len; index++) {
+			const switchCase = switchCases[index];
+
+			if (switchCase.test) {
+				this.walkExpression(switchCase.test);
+			}
+			this.walkStatements(switchCase.consequent);
+		}
+	}
+
+	walkCatchClause(catchClause) {
+		this.inBlockScope(() => {
+			// Error binding is optional in catch clause since ECMAScript 2019
+			if (catchClause.param !== null) {
+				this.enterPattern(catchClause.param, ident => {
+					this.scope.renames.set(ident, null);
+					this.scope.definitions.add(ident);
+				});
+				this.walkPattern(catchClause.param);
+			}
+			this.prewalkStatement(catchClause.body);
+			this.walkStatement(catchClause.body);
+		});
+	}
+
+	walkPattern(pattern) {
+		switch (pattern.type) {
+			case "ArrayPattern":
+				this.walkArrayPattern(pattern);
+				break;
+			case "AssignmentPattern":
+				this.walkAssignmentPattern(pattern);
+				break;
+			case "MemberExpression":
+				this.walkMemberExpression(pattern);
+				break;
+			case "ObjectPattern":
+				this.walkObjectPattern(pattern);
+				break;
+			case "RestElement":
+				this.walkRestElement(pattern);
+				break;
+		}
+	}
+
+	walkAssignmentPattern(pattern) {
+		this.walkExpression(pattern.right);
+		this.walkPattern(pattern.left);
+	}
+
+	walkObjectPattern(pattern) {
+		for (let i = 0, len = pattern.properties.length; i < len; i++) {
+			const prop = pattern.properties[i];
+			if (prop) {
+				if (prop.computed) this.walkExpression(prop.key);
+				if (prop.value) this.walkPattern(prop.value);
+			}
+		}
+	}
+
+	walkArrayPattern(pattern) {
+		for (let i = 0, len = pattern.elements.length; i < len; i++) {
+			const element = pattern.elements[i];
+			if (element) this.walkPattern(element);
+		}
+	}
+
+	walkRestElement(pattern) {
+		this.walkPattern(pattern.argument);
+	}
+
+	walkExpressions(expressions) {
+		for (const expression of expressions) {
+			if (expression) {
+				this.walkExpression(expression);
+			}
+		}
+	}
+
+	walkExpression(expression) {
+		switch (expression.type) {
+			case "ArrayExpression":
+				this.walkArrayExpression(expression);
+				break;
+			case "ArrowFunctionExpression":
+				this.walkArrowFunctionExpression(expression);
+				break;
+			case "AssignmentExpression":
+				this.walkAssignmentExpression(expression);
+				break;
+			case "AwaitExpression":
+				this.walkAwaitExpression(expression);
+				break;
+			case "BinaryExpression":
+				this.walkBinaryExpression(expression);
+				break;
+			case "CallExpression":
+				this.walkCallExpression(expression);
+				break;
+			case "ClassExpression":
+				this.walkClassExpression(expression);
+				break;
+			case "ConditionalExpression":
+				this.walkConditionalExpression(expression);
+				break;
+			case "FunctionExpression":
+				this.walkFunctionExpression(expression);
+				break;
+			case "Identifier":
+				this.walkIdentifier(expression);
+				break;
+			case "LogicalExpression":
+				this.walkLogicalExpression(expression);
+				break;
+			case "MemberExpression":
+				this.walkMemberExpression(expression);
+				break;
+			case "NewExpression":
+				this.walkNewExpression(expression);
+				break;
+			case "ObjectExpression":
+				this.walkObjectExpression(expression);
+				break;
+			case "SequenceExpression":
+				this.walkSequenceExpression(expression);
+				break;
+			case "SpreadElement":
+				this.walkSpreadElement(expression);
+				break;
+			case "TaggedTemplateExpression":
+				this.walkTaggedTemplateExpression(expression);
+				break;
+			case "TemplateLiteral":
+				this.walkTemplateLiteral(expression);
+				break;
+			case "ThisExpression":
+				this.walkThisExpression(expression);
+				break;
+			case "UnaryExpression":
+				this.walkUnaryExpression(expression);
+				break;
+			case "UpdateExpression":
+				this.walkUpdateExpression(expression);
+				break;
+			case "YieldExpression":
+				this.walkYieldExpression(expression);
+				break;
+		}
+	}
+
+	walkAwaitExpression(expression) {
+		this.walkExpression(expression.argument);
+	}
+
+	walkArrayExpression(expression) {
+		if (expression.elements) {
+			this.walkExpressions(expression.elements);
+		}
+	}
+
+	walkSpreadElement(expression) {
+		if (expression.argument) {
+			this.walkExpression(expression.argument);
+		}
+	}
+
+	walkObjectExpression(expression) {
+		for (
+			let propIndex = 0, len = expression.properties.length;
+			propIndex < len;
+			propIndex++
+		) {
+			const prop = expression.properties[propIndex];
+			if (prop.type === "SpreadElement") {
+				this.walkExpression(prop.argument);
+				continue;
+			}
+			if (prop.computed) {
+				this.walkExpression(prop.key);
+			}
+			if (prop.shorthand) {
+				this.scope.inShorthand = true;
+			}
+			this.walkExpression(prop.value);
+			if (prop.shorthand) {
+				this.scope.inShorthand = false;
+			}
+		}
+	}
+
+	walkFunctionExpression(expression) {
+		const wasTopLevel = this.scope.topLevelScope;
+		this.scope.topLevelScope = false;
+		const scopeParams = expression.params;
+
+		// Add function name in scope for recursive calls
+		if (expression.id) {
+			scopeParams.push(expression.id.name);
+		}
+
+		this.inFunctionScope(true, scopeParams, () => {
+			for (const param of expression.params) {
+				this.walkPattern(param);
+			}
+			if (expression.body.type === "BlockStatement") {
+				this.detectMode(expression.body.body);
+				this.prewalkStatement(expression.body);
+				this.walkStatement(expression.body);
+			} else {
+				this.walkExpression(expression.body);
+			}
+		});
+		this.scope.topLevelScope = wasTopLevel;
+	}
+
+	walkArrowFunctionExpression(expression) {
+		this.inFunctionScope(false, expression.params, () => {
+			for (const param of expression.params) {
+				this.walkPattern(param);
+			}
+			if (expression.body.type === "BlockStatement") {
+				this.detectMode(expression.body.body);
+				this.prewalkStatement(expression.body);
+				this.walkStatement(expression.body);
+			} else {
+				this.walkExpression(expression.body);
+			}
+		});
+	}
+
+	walkSequenceExpression(expression) {
+		if (expression.expressions) this.walkExpressions(expression.expressions);
+	}
+
+	walkUpdateExpression(expression) {
+		this.walkExpression(expression.argument);
+	}
+
+	walkUnaryExpression(expression) {
+		if (expression.operator === "typeof") {
+			const exprName = this.getNameForExpression(expression.argument);
+			if (exprName && exprName.free) {
+				const hook = this.hooks.typeof.get(exprName.name);
+				if (hook !== undefined) {
+					const result = hook.call(expression);
+					if (result === true) return;
+				}
+			}
+		}
+		this.walkExpression(expression.argument);
+	}
+
+	walkLeftRightExpression(expression) {
+		this.walkExpression(expression.left);
+		this.walkExpression(expression.right);
+	}
+
+	walkBinaryExpression(expression) {
+		this.walkLeftRightExpression(expression);
+	}
+
+	walkLogicalExpression(expression) {
+		const result = this.hooks.expressionLogicalOperator.call(expression);
+		if (result === undefined) {
+			this.walkLeftRightExpression(expression);
+		} else {
+			if (result) {
+				this.walkExpression(expression.right);
+			}
+		}
+	}
+
+	walkAssignmentExpression(expression) {
+		const renameIdentifier = this.getRenameIdentifier(expression.right);
+		if (expression.left.type === "Identifier" && renameIdentifier) {
+			const hook = this.hooks.canRename.get(renameIdentifier);
+			if (hook !== undefined && hook.call(expression.right)) {
+				// renaming "a = b;"
+				const hook = this.hooks.rename.get(renameIdentifier);
+				if (hook === undefined || !hook.call(expression.right)) {
+					this.scope.renames.set(expression.left.name, renameIdentifier);
+					this.scope.definitions.delete(expression.left.name);
+				}
+				return;
+			}
+		}
+		if (expression.left.type === "Identifier") {
+			const assignedHook = this.hooks.assigned.get(expression.left.name);
+			if (assignedHook === undefined || !assignedHook.call(expression)) {
+				this.walkExpression(expression.right);
+			}
+			this.scope.renames.set(expression.left.name, null);
+			const assignHook = this.hooks.assign.get(expression.left.name);
+			if (assignHook === undefined || !assignHook.call(expression)) {
+				this.walkExpression(expression.left);
+			}
+			return;
+		}
+		this.walkExpression(expression.right);
+		this.walkPattern(expression.left);
+		this.enterPattern(expression.left, (name, decl) => {
+			this.scope.renames.set(name, null);
+		});
+	}
+
+	walkConditionalExpression(expression) {
+		const result = this.hooks.expressionConditionalOperator.call(expression);
+		if (result === undefined) {
+			this.walkExpression(expression.test);
+			this.walkExpression(expression.consequent);
+			if (expression.alternate) {
+				this.walkExpression(expression.alternate);
+			}
+		} else {
+			if (result) {
+				this.walkExpression(expression.consequent);
+			} else if (expression.alternate) {
+				this.walkExpression(expression.alternate);
+			}
+		}
+	}
+
+	walkNewExpression(expression) {
+		const callee = this.evaluateExpression(expression.callee);
+		if (callee.isIdentifier()) {
+			const hook = this.hooks.new.get(callee.identifier);
+			if (hook !== undefined) {
+				const result = hook.call(expression);
+				if (result === true) {
+					return;
+				}
+			}
+		}
+
+		this.walkExpression(expression.callee);
+		if (expression.arguments) {
+			this.walkExpressions(expression.arguments);
+		}
+	}
+
+	walkYieldExpression(expression) {
+		if (expression.argument) {
+			this.walkExpression(expression.argument);
+		}
+	}
+
+	walkTemplateLiteral(expression) {
+		if (expression.expressions) {
+			this.walkExpressions(expression.expressions);
+		}
+	}
+
+	walkTaggedTemplateExpression(expression) {
+		if (expression.tag) {
+			this.walkExpression(expression.tag);
+		}
+		if (expression.quasi && expression.quasi.expressions) {
+			this.walkExpressions(expression.quasi.expressions);
+		}
+	}
+
+	walkClassExpression(expression) {
+		this.walkClass(expression);
+	}
+
+	_walkIIFE(functionExpression, options, currentThis) {
+		const renameArgOrThis = argOrThis => {
+			const renameIdentifier = this.getRenameIdentifier(argOrThis);
+			if (renameIdentifier) {
+				const hook = this.hooks.canRename.get(renameIdentifier);
+				if (hook !== undefined && hook.call(argOrThis)) {
+					const hook = this.hooks.rename.get(renameIdentifier);
+					if (hook === undefined || !hook.call(argOrThis)) {
+						return renameIdentifier;
+					}
+				}
+			}
+			this.walkExpression(argOrThis);
+		};
+		const params = functionExpression.params;
+		const renameThis = currentThis ? renameArgOrThis(currentThis) : null;
+		const args = options.map(renameArgOrThis);
+		const wasTopLevel = this.scope.topLevelScope;
+		this.scope.topLevelScope = false;
+		const scopeParams = params.filter((identifier, idx) => !args[idx]);
+
+		// Add function name in scope for recursive calls
+		if (functionExpression.id) {
+			scopeParams.push(functionExpression.id.name);
+		}
+
+		this.inFunctionScope(true, scopeParams, () => {
+			if (renameThis) {
+				this.scope.renames.set("this", renameThis);
+			}
+			for (let i = 0; i < args.length; i++) {
+				const param = args[i];
+				if (!param) continue;
+				if (!params[i] || params[i].type !== "Identifier") continue;
+				this.scope.renames.set(params[i].name, param);
+			}
+			if (functionExpression.body.type === "BlockStatement") {
+				this.detectMode(functionExpression.body.body);
+				this.prewalkStatement(functionExpression.body);
+				this.walkStatement(functionExpression.body);
+			} else {
+				this.walkExpression(functionExpression.body);
+			}
+		});
+		this.scope.topLevelScope = wasTopLevel;
+	}
+
+	walkCallExpression(expression) {
+		if (
+			expression.callee.type === "MemberExpression" &&
+			expression.callee.object.type === "FunctionExpression" &&
+			!expression.callee.computed &&
+			(expression.callee.property.name === "call" ||
+				expression.callee.property.name === "bind") &&
+			expression.arguments.length > 0
+		) {
+			// (function(…) { }.call/bind(?, …))
+			this._walkIIFE(
+				expression.callee.object,
+				expression.arguments.slice(1),
+				expression.arguments[0]
+			);
+		} else if (expression.callee.type === "FunctionExpression") {
+			// (function(…) { }(…))
+			this._walkIIFE(expression.callee, expression.arguments, null);
+		} else if (expression.callee.type === "Import") {
+			let result = this.hooks.importCall.call(expression);
+			if (result === true) return;
+
+			if (expression.arguments) this.walkExpressions(expression.arguments);
+		} else {
+			const callee = this.evaluateExpression(expression.callee);
+			if (callee.isIdentifier()) {
+				const callHook = this.hooks.call.get(callee.identifier);
+				if (callHook !== undefined) {
+					let result = callHook.call(expression);
+					if (result === true) return;
+				}
+				let identifier = callee.identifier.replace(/\.[^.]+$/, "");
+				if (identifier !== callee.identifier) {
+					const callAnyHook = this.hooks.callAnyMember.get(identifier);
+					if (callAnyHook !== undefined) {
+						let result = callAnyHook.call(expression);
+						if (result === true) return;
+					}
+				}
+			}
+
+			if (expression.callee) this.walkExpression(expression.callee);
+			if (expression.arguments) this.walkExpressions(expression.arguments);
+		}
+	}
+
+	walkMemberExpression(expression) {
+		const exprName = this.getNameForExpression(expression);
+		if (exprName && exprName.free) {
+			const expressionHook = this.hooks.expression.get(exprName.name);
+			if (expressionHook !== undefined) {
+				const result = expressionHook.call(expression);
+				if (result === true) return;
+			}
+			const expressionAnyMemberHook = this.hooks.expressionAnyMember.get(
+				exprName.nameGeneral
+			);
+			if (expressionAnyMemberHook !== undefined) {
+				const result = expressionAnyMemberHook.call(expression);
+				if (result === true) return;
+			}
+		}
+		this.walkExpression(expression.object);
+		if (expression.computed === true) this.walkExpression(expression.property);
+	}
+
+	walkThisExpression(expression) {
+		const expressionHook = this.hooks.expression.get("this");
+		if (expressionHook !== undefined) {
+			expressionHook.call(expression);
+		}
+	}
+
+	walkIdentifier(expression) {
+		if (!this.scope.definitions.has(expression.name)) {
+			const hook = this.hooks.expression.get(
+				this.scope.renames.get(expression.name) || expression.name
+			);
+			if (hook !== undefined) {
+				const result = hook.call(expression);
+				if (result === true) return;
+			}
+		}
+	}
+
+	/**
+	 * @deprecated
+	 * @param {any} params scope params
+	 * @param {function(): void} fn inner function
+	 * @returns {void}
+	 */
+	inScope(params, fn) {
+		const oldScope = this.scope;
+		this.scope = {
+			topLevelScope: oldScope.topLevelScope,
+			inTry: false,
+			inShorthand: false,
+			isStrict: oldScope.isStrict,
+			isAsmJs: oldScope.isAsmJs,
+			definitions: oldScope.definitions.createChild(),
+			renames: oldScope.renames.createChild()
+		};
+
+		this.scope.renames.set("this", null);
+
+		this.enterPatterns(params, ident => {
+			this.scope.renames.set(ident, null);
+			this.scope.definitions.add(ident);
+		});
+
+		fn();
+
+		this.scope = oldScope;
+	}
+
+	inFunctionScope(hasThis, params, fn) {
+		const oldScope = this.scope;
+		this.scope = {
+			topLevelScope: oldScope.topLevelScope,
+			inTry: false,
+			inShorthand: false,
+			isStrict: oldScope.isStrict,
+			isAsmJs: oldScope.isAsmJs,
+			definitions: oldScope.definitions.createChild(),
+			renames: oldScope.renames.createChild()
+		};
+
+		if (hasThis) {
+			this.scope.renames.set("this", null);
+		}
+
+		this.enterPatterns(params, ident => {
+			this.scope.renames.set(ident, null);
+			this.scope.definitions.add(ident);
+		});
+
+		fn();
+
+		this.scope = oldScope;
+	}
+
+	inBlockScope(fn) {
+		const oldScope = this.scope;
+		this.scope = {
+			topLevelScope: oldScope.topLevelScope,
+			inTry: oldScope.inTry,
+			inShorthand: false,
+			isStrict: oldScope.isStrict,
+			isAsmJs: oldScope.isAsmJs,
+			definitions: oldScope.definitions.createChild(),
+			renames: oldScope.renames.createChild()
+		};
+
+		fn();
+
+		this.scope = oldScope;
+	}
+
+	// TODO webpack 5: remove this methods
+	// only for backward-compat
+	detectStrictMode(statements) {
+		this.detectMode(statements);
+	}
+
+	detectMode(statements) {
+		const isLiteral =
+			statements.length >= 1 &&
+			statements[0].type === "ExpressionStatement" &&
+			statements[0].expression.type === "Literal";
+		if (isLiteral && statements[0].expression.value === "use strict") {
+			this.scope.isStrict = true;
+		}
+		if (isLiteral && statements[0].expression.value === "use asm") {
+			this.scope.isAsmJs = true;
+		}
+	}
+
+	enterPatterns(patterns, onIdent) {
+		for (const pattern of patterns) {
+			if (typeof pattern !== "string") {
+				this.enterPattern(pattern, onIdent);
+			} else if (pattern) {
+				onIdent(pattern);
+			}
+		}
+	}
+
+	enterPattern(pattern, onIdent) {
+		if (!pattern) return;
+		switch (pattern.type) {
+			case "ArrayPattern":
+				this.enterArrayPattern(pattern, onIdent);
+				break;
+			case "AssignmentPattern":
+				this.enterAssignmentPattern(pattern, onIdent);
+				break;
+			case "Identifier":
+				this.enterIdentifier(pattern, onIdent);
+				break;
+			case "ObjectPattern":
+				this.enterObjectPattern(pattern, onIdent);
+				break;
+			case "RestElement":
+				this.enterRestElement(pattern, onIdent);
+				break;
+			case "Property":
+				this.enterPattern(pattern.value, onIdent);
+				break;
+		}
+	}
+
+	enterIdentifier(pattern, onIdent) {
+		onIdent(pattern.name, pattern);
+	}
+
+	enterObjectPattern(pattern, onIdent) {
+		for (
+			let propIndex = 0, len = pattern.properties.length;
+			propIndex < len;
+			propIndex++
+		) {
+			const prop = pattern.properties[propIndex];
+			this.enterPattern(prop, onIdent);
+		}
+	}
+
+	enterArrayPattern(pattern, onIdent) {
+		for (
+			let elementIndex = 0, len = pattern.elements.length;
+			elementIndex < len;
+			elementIndex++
+		) {
+			const element = pattern.elements[elementIndex];
+			this.enterPattern(element, onIdent);
+		}
+	}
+
+	enterRestElement(pattern, onIdent) {
+		this.enterPattern(pattern.argument, onIdent);
+	}
+
+	enterAssignmentPattern(pattern, onIdent) {
+		this.enterPattern(pattern.left, onIdent);
+	}
+
+	evaluateExpression(expression) {
+		try {
+			const hook = this.hooks.evaluate.get(expression.type);
+			if (hook !== undefined) {
+				const result = hook.call(expression);
+				if (result !== undefined) {
+					if (result) {
+						result.setExpression(expression);
+					}
+					return result;
+				}
+			}
+		} catch (e) {
+			console.warn(e);
+			// ignore error
+		}
+		return new BasicEvaluatedExpression()
+			.setRange(expression.range)
+			.setExpression(expression);
+	}
+
+	parseString(expression) {
+		switch (expression.type) {
+			case "BinaryExpression":
+				if (expression.operator === "+") {
+					return (
+						this.parseString(expression.left) +
+						this.parseString(expression.right)
+					);
+				}
+				break;
+			case "Literal":
+				return expression.value + "";
+		}
+		throw new Error(
+			expression.type + " is not supported as parameter for require"
+		);
+	}
+
+	parseCalculatedString(expression) {
+		switch (expression.type) {
+			case "BinaryExpression":
+				if (expression.operator === "+") {
+					const left = this.parseCalculatedString(expression.left);
+					const right = this.parseCalculatedString(expression.right);
+					if (left.code) {
+						return {
+							range: left.range,
+							value: left.value,
+							code: true,
+							conditional: false
+						};
+					} else if (right.code) {
+						return {
+							range: [
+								left.range[0],
+								right.range ? right.range[1] : left.range[1]
+							],
+							value: left.value + right.value,
+							code: true,
+							conditional: false
+						};
+					} else {
+						return {
+							range: [left.range[0], right.range[1]],
+							value: left.value + right.value,
+							code: false,
+							conditional: false
+						};
+					}
+				}
+				break;
+			case "ConditionalExpression": {
+				const consequent = this.parseCalculatedString(expression.consequent);
+				const alternate = this.parseCalculatedString(expression.alternate);
+				const items = [];
+				if (consequent.conditional) {
+					items.push(...consequent.conditional);
+				} else if (!consequent.code) {
+					items.push(consequent);
+				} else {
+					break;
+				}
+				if (alternate.conditional) {
+					items.push(...alternate.conditional);
+				} else if (!alternate.code) {
+					items.push(alternate);
+				} else {
+					break;
+				}
+				return {
+					range: undefined,
+					value: "",
+					code: true,
+					conditional: items
+				};
+			}
+			case "Literal":
+				return {
+					range: expression.range,
+					value: expression.value + "",
+					code: false,
+					conditional: false
+				};
+		}
+		return {
+			range: undefined,
+			value: "",
+			code: true,
+			conditional: false
+		};
+	}
+
+	parse(source, initialState) {
+		let ast;
+		let comments;
+		if (typeof source === "object" && source !== null) {
+			ast = source;
+			comments = source.comments;
+		} else {
+			comments = [];
+			ast = Parser.parse(source, {
+				sourceType: this.sourceType,
+				onComment: comments
+			});
+		}
+
+		const oldScope = this.scope;
+		const oldState = this.state;
+		const oldComments = this.comments;
+		this.scope = {
+			topLevelScope: true,
+			inTry: false,
+			inShorthand: false,
+			isStrict: false,
+			isAsmJs: false,
+			definitions: new StackedSetMap(),
+			renames: new StackedSetMap()
+		};
+		const state = (this.state = initialState || {});
+		this.comments = comments;
+		if (this.hooks.program.call(ast, comments) === undefined) {
+			this.detectMode(ast.body);
+			this.prewalkStatements(ast.body);
+			this.blockPrewalkStatements(ast.body);
+			this.walkStatements(ast.body);
+		}
+		this.scope = oldScope;
+		this.state = oldState;
+		this.comments = oldComments;
+		return state;
+	}
+
+	evaluate(source) {
+		const ast = Parser.parse("(" + source + ")", {
+			sourceType: this.sourceType,
+			locations: false
+		});
+		// TODO(https://github.com/acornjs/acorn/issues/741)
+		// @ts-ignore
+		if (ast.body.length !== 1 || ast.body[0].type !== "ExpressionStatement") {
+			throw new Error("evaluate: Source is not a expression");
+		}
+		// TODO(https://github.com/acornjs/acorn/issues/741)
+		// @ts-ignore
+		return this.evaluateExpression(ast.body[0].expression);
+	}
+
+	getComments(range) {
+		return this.comments.filter(
+			comment => comment.range[0] >= range[0] && comment.range[1] <= range[1]
+		);
+	}
+
+	parseCommentOptions(range) {
+		const comments = this.getComments(range);
+		if (comments.length === 0) {
+			return EMPTY_COMMENT_OPTIONS;
+		}
+		let options = {};
+		let errors = [];
+		for (const comment of comments) {
+			const { value } = comment;
+			if (value && webpackCommentRegExp.test(value)) {
+				// try compile only if webpack options comment is present
+				try {
+					const val = vm.runInNewContext(`(function(){return {${value}};})()`);
+					Object.assign(options, val);
+				} catch (e) {
+					e.comment = comment;
+					errors.push(e);
+				}
+			}
+		}
+		return { options, errors };
+	}
+
+	getNameForExpression(expression) {
+		let expr = expression;
+		const exprName = [];
+		while (
+			expr.type === "MemberExpression" &&
+			expr.property.type === (expr.computed ? "Literal" : "Identifier")
+		) {
+			exprName.push(expr.computed ? expr.property.value : expr.property.name);
+			expr = expr.object;
+		}
+		let free;
+		if (expr.type === "Identifier") {
+			free = !this.scope.definitions.has(expr.name);
+			exprName.push(this.scope.renames.get(expr.name) || expr.name);
+		} else if (
+			expr.type === "ThisExpression" &&
+			this.scope.renames.get("this")
+		) {
+			free = true;
+			exprName.push(this.scope.renames.get("this"));
+		} else if (expr.type === "ThisExpression") {
+			free = this.scope.topLevelScope;
+			exprName.push("this");
+		} else {
+			return null;
+		}
+		let prefix = "";
+		for (let i = exprName.length - 1; i >= 2; i--) {
+			prefix += exprName[i] + ".";
+		}
+		if (exprName.length > 1) {
+			prefix += exprName[1];
+		}
+		const name = prefix ? prefix + "." + exprName[0] : exprName[0];
+		const nameGeneral = prefix;
+		return {
+			name,
+			nameGeneral,
+			free
+		};
+	}
+
+	static parse(code, options) {
+		const type = options ? options.sourceType : "module";
+		const parserOptions = Object.assign(
+			Object.create(null),
+			defaultParserOptions,
+			options
+		);
+
+		if (type === "auto") {
+			parserOptions.sourceType = "module";
+		} else if (parserOptions.sourceType === "script") {
+			parserOptions.allowReturnOutsideFunction = true;
+		}
+
+		let ast;
+		let error;
+		let threw = false;
+		try {
+			ast = acornParser.parse(code, parserOptions);
+		} catch (e) {
+			error = e;
+			threw = true;
+		}
+
+		if (threw && type === "auto") {
+			parserOptions.sourceType = "script";
+			parserOptions.allowReturnOutsideFunction = true;
+			if (Array.isArray(parserOptions.onComment)) {
+				parserOptions.onComment.length = 0;
+			}
+			try {
+				ast = acornParser.parse(code, parserOptions);
+				threw = false;
+			} catch (e) {
+				threw = true;
+			}
+		}
+
+		if (threw) {
+			throw error;
+		}
+
+		return ast;
+	}
+}
+
+// TODO remove in webpack 5
+Object.defineProperty(Parser.prototype, "getCommentOptions", {
+	configurable: false,
+	value: util.deprecate(
+		/**
+		 * @deprecated
+		 * @param {TODO} range Range
+		 * @returns {void}
+		 * @this {Parser}
+		 */
+		function(range) {
+			return this.parseCommentOptions(range).options;
+		},
+		"Parser.getCommentOptions: Use Parser.parseCommentOptions(range) instead"
+	)
+});
+
+module.exports = Parser;