added hover prefixer

1 files changed, 545 insertions, 0 deletions

diff --git a/node_modules/webpack/lib/ConstPlugin.js b/node_modules/webpack/lib/ConstPlugin.js
new file mode 100644
index 00000000..74806b12
--- /dev/null
+++ b/node_modules/webpack/lib/ConstPlugin.js
@@ -0,0 +1,545 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const {
+	JAVASCRIPT_MODULE_TYPE_AUTO,
+	JAVASCRIPT_MODULE_TYPE_DYNAMIC,
+	JAVASCRIPT_MODULE_TYPE_ESM
+} = require("./ModuleTypeConstants");
+const CachedConstDependency = require("./dependencies/CachedConstDependency");
+const ConstDependency = require("./dependencies/ConstDependency");
+const { evaluateToString } = require("./javascript/JavascriptParserHelpers");
+const { parseResource } = require("./util/identifier");
+
+/** @typedef {import("estree").AssignmentProperty} AssignmentProperty */
+/** @typedef {import("estree").Expression} Expression */
+/** @typedef {import("estree").Identifier} Identifier */
+/** @typedef {import("estree").Pattern} Pattern */
+/** @typedef {import("estree").SourceLocation} SourceLocation */
+/** @typedef {import("estree").Statement} Statement */
+/** @typedef {import("estree").Super} Super */
+/** @typedef {import("./Compiler")} Compiler */
+/** @typedef {import("./javascript/BasicEvaluatedExpression")} BasicEvaluatedExpression */
+/** @typedef {import("./javascript/JavascriptParser")} JavascriptParser */
+/** @typedef {import("./javascript/JavascriptParser").Range} Range */
+
+/**
+ * @param {Set<string>} declarations set of declarations
+ * @param {Identifier | Pattern} pattern pattern to collect declarations from
+ */
+const collectDeclaration = (declarations, pattern) => {
+	const stack = [pattern];
+	while (stack.length > 0) {
+		const node = /** @type {Pattern} */ (stack.pop());
+		switch (node.type) {
+			case "Identifier":
+				declarations.add(node.name);
+				break;
+			case "ArrayPattern":
+				for (const element of node.elements) {
+					if (element) {
+						stack.push(element);
+					}
+				}
+				break;
+			case "AssignmentPattern":
+				stack.push(node.left);
+				break;
+			case "ObjectPattern":
+				for (const property of node.properties) {
+					stack.push(/** @type {AssignmentProperty} */ (property).value);
+				}
+				break;
+			case "RestElement":
+				stack.push(node.argument);
+				break;
+		}
+	}
+};
+
+/**
+ * @param {Statement} branch branch to get hoisted declarations from
+ * @param {boolean} includeFunctionDeclarations whether to include function declarations
+ * @returns {Array<string>} hoisted declarations
+ */
+const getHoistedDeclarations = (branch, includeFunctionDeclarations) => {
+	const declarations = new Set();
+	/** @type {Array<TODO | null | undefined>} */
+	const stack = [branch];
+	while (stack.length > 0) {
+		const node = stack.pop();
+		// Some node could be `null` or `undefined`.
+		if (!node) continue;
+		switch (node.type) {
+			// Walk through control statements to look for hoisted declarations.
+			// Some branches are skipped since they do not allow declarations.
+			case "BlockStatement":
+				for (const stmt of node.body) {
+					stack.push(stmt);
+				}
+				break;
+			case "IfStatement":
+				stack.push(node.consequent);
+				stack.push(node.alternate);
+				break;
+			case "ForStatement":
+				stack.push(node.init);
+				stack.push(node.body);
+				break;
+			case "ForInStatement":
+			case "ForOfStatement":
+				stack.push(node.left);
+				stack.push(node.body);
+				break;
+			case "DoWhileStatement":
+			case "WhileStatement":
+			case "LabeledStatement":
+				stack.push(node.body);
+				break;
+			case "SwitchStatement":
+				for (const cs of node.cases) {
+					for (const consequent of cs.consequent) {
+						stack.push(consequent);
+					}
+				}
+				break;
+			case "TryStatement":
+				stack.push(node.block);
+				if (node.handler) {
+					stack.push(node.handler.body);
+				}
+				stack.push(node.finalizer);
+				break;
+			case "FunctionDeclaration":
+				if (includeFunctionDeclarations) {
+					collectDeclaration(declarations, /** @type {Identifier} */ (node.id));
+				}
+				break;
+			case "VariableDeclaration":
+				if (node.kind === "var") {
+					for (const decl of node.declarations) {
+						collectDeclaration(declarations, decl.id);
+					}
+				}
+				break;
+		}
+	}
+	return Array.from(declarations);
+};
+
+const PLUGIN_NAME = "ConstPlugin";
+
+class ConstPlugin {
+	/**
+	 * Apply the plugin
+	 * @param {Compiler} compiler the compiler instance
+	 * @returns {void}
+	 */
+	apply(compiler) {
+		const cachedParseResource = parseResource.bindCache(compiler.root);
+		compiler.hooks.compilation.tap(
+			PLUGIN_NAME,
+			(compilation, { normalModuleFactory }) => {
+				compilation.dependencyTemplates.set(
+					ConstDependency,
+					new ConstDependency.Template()
+				);
+
+				compilation.dependencyTemplates.set(
+					CachedConstDependency,
+					new CachedConstDependency.Template()
+				);
+
+				/**
+				 * @param {JavascriptParser} parser the parser
+				 */
+				const handler = parser => {
+					parser.hooks.statementIf.tap(PLUGIN_NAME, statement => {
+						if (parser.scope.isAsmJs) return;
+						const param = parser.evaluateExpression(statement.test);
+						const bool = param.asBool();
+						if (typeof bool === "boolean") {
+							if (!param.couldHaveSideEffects()) {
+								const dep = new ConstDependency(
+									`${bool}`,
+									/** @type {Range} */ (param.range)
+								);
+								dep.loc = /** @type {SourceLocation} */ (statement.loc);
+								parser.state.module.addPresentationalDependency(dep);
+							} else {
+								parser.walkExpression(statement.test);
+							}
+							const branchToRemove = bool
+								? statement.alternate
+								: statement.consequent;
+							if (branchToRemove) {
+								// Before removing the dead branch, the hoisted declarations
+								// must be collected.
+								//
+								// Given the following code:
+								//
+								//     if (true) f() else g()
+								//     if (false) {
+								//       function f() {}
+								//       const g = function g() {}
+								//       if (someTest) {
+								//         let a = 1
+								//         var x, {y, z} = obj
+								//       }
+								//     } else {
+								//       …
+								//     }
+								//
+								// the generated code is:
+								//
+								//     if (true) f() else {}
+								//     if (false) {
+								//       var f, x, y, z;   (in loose mode)
+								//       var x, y, z;      (in strict mode)
+								//     } else {
+								//       …
+								//     }
+								//
+								// NOTE: When code runs in strict mode, `var` declarations
+								// are hoisted but `function` declarations don't.
+								//
+								let declarations;
+								if (parser.scope.isStrict) {
+									// If the code runs in strict mode, variable declarations
+									// using `var` must be hoisted.
+									declarations = getHoistedDeclarations(branchToRemove, false);
+								} else {
+									// Otherwise, collect all hoisted declaration.
+									declarations = getHoistedDeclarations(branchToRemove, true);
+								}
+								let replacement;
+								if (declarations.length > 0) {
+									replacement = `{ var ${declarations.join(", ")}; }`;
+								} else {
+									replacement = "{}";
+								}
+								const dep = new ConstDependency(
+									replacement,
+									/** @type {Range} */ (branchToRemove.range)
+								);
+								dep.loc = /** @type {SourceLocation} */ (branchToRemove.loc);
+								parser.state.module.addPresentationalDependency(dep);
+							}
+							return bool;
+						}
+					});
+					parser.hooks.expressionConditionalOperator.tap(
+						PLUGIN_NAME,
+						expression => {
+							if (parser.scope.isAsmJs) return;
+							const param = parser.evaluateExpression(expression.test);
+							const bool = param.asBool();
+							if (typeof bool === "boolean") {
+								if (!param.couldHaveSideEffects()) {
+									const dep = new ConstDependency(
+										` ${bool}`,
+										/** @type {Range} */ (param.range)
+									);
+									dep.loc = /** @type {SourceLocation} */ (expression.loc);
+									parser.state.module.addPresentationalDependency(dep);
+								} else {
+									parser.walkExpression(expression.test);
+								}
+								// Expressions do not hoist.
+								// It is safe to remove the dead branch.
+								//
+								// Given the following code:
+								//
+								//   false ? someExpression() : otherExpression();
+								//
+								// the generated code is:
+								//
+								//   false ? 0 : otherExpression();
+								//
+								const branchToRemove = bool
+									? expression.alternate
+									: expression.consequent;
+								const dep = new ConstDependency(
+									"0",
+									/** @type {Range} */ (branchToRemove.range)
+								);
+								dep.loc = /** @type {SourceLocation} */ (branchToRemove.loc);
+								parser.state.module.addPresentationalDependency(dep);
+								return bool;
+							}
+						}
+					);
+					parser.hooks.expressionLogicalOperator.tap(
+						PLUGIN_NAME,
+						expression => {
+							if (parser.scope.isAsmJs) return;
+							if (
+								expression.operator === "&&" ||
+								expression.operator === "||"
+							) {
+								const param = parser.evaluateExpression(expression.left);
+								const bool = param.asBool();
+								if (typeof bool === "boolean") {
+									// Expressions do not hoist.
+									// It is safe to remove the dead branch.
+									//
+									// ------------------------------------------
+									//
+									// Given the following code:
+									//
+									//   falsyExpression() && someExpression();
+									//
+									// the generated code is:
+									//
+									//   falsyExpression() && false;
+									//
+									// ------------------------------------------
+									//
+									// Given the following code:
+									//
+									//   truthyExpression() && someExpression();
+									//
+									// the generated code is:
+									//
+									//   true && someExpression();
+									//
+									// ------------------------------------------
+									//
+									// Given the following code:
+									//
+									//   truthyExpression() || someExpression();
+									//
+									// the generated code is:
+									//
+									//   truthyExpression() || false;
+									//
+									// ------------------------------------------
+									//
+									// Given the following code:
+									//
+									//   falsyExpression() || someExpression();
+									//
+									// the generated code is:
+									//
+									//   false && someExpression();
+									//
+									const keepRight =
+										(expression.operator === "&&" && bool) ||
+										(expression.operator === "||" && !bool);
+
+									if (
+										!param.couldHaveSideEffects() &&
+										(param.isBoolean() || keepRight)
+									) {
+										// for case like
+										//
+										//   return'development'===process.env.NODE_ENV&&'foo'
+										//
+										// we need a space before the bool to prevent result like
+										//
+										//   returnfalse&&'foo'
+										//
+										const dep = new ConstDependency(
+											` ${bool}`,
+											/** @type {Range} */ (param.range)
+										);
+										dep.loc = /** @type {SourceLocation} */ (expression.loc);
+										parser.state.module.addPresentationalDependency(dep);
+									} else {
+										parser.walkExpression(expression.left);
+									}
+									if (!keepRight) {
+										const dep = new ConstDependency(
+											"0",
+											/** @type {Range} */ (expression.right.range)
+										);
+										dep.loc = /** @type {SourceLocation} */ (expression.loc);
+										parser.state.module.addPresentationalDependency(dep);
+									}
+									return keepRight;
+								}
+							} else if (expression.operator === "??") {
+								const param = parser.evaluateExpression(expression.left);
+								const keepRight = param.asNullish();
+								if (typeof keepRight === "boolean") {
+									// ------------------------------------------
+									//
+									// Given the following code:
+									//
+									//   nonNullish ?? someExpression();
+									//
+									// the generated code is:
+									//
+									//   nonNullish ?? 0;
+									//
+									// ------------------------------------------
+									//
+									// Given the following code:
+									//
+									//   nullish ?? someExpression();
+									//
+									// the generated code is:
+									//
+									//   null ?? someExpression();
+									//
+									if (!param.couldHaveSideEffects() && keepRight) {
+										// cspell:word returnnull
+										// for case like
+										//
+										//   return('development'===process.env.NODE_ENV&&null)??'foo'
+										//
+										// we need a space before the bool to prevent result like
+										//
+										//   returnnull??'foo'
+										//
+										const dep = new ConstDependency(
+											" null",
+											/** @type {Range} */ (param.range)
+										);
+										dep.loc = /** @type {SourceLocation} */ (expression.loc);
+										parser.state.module.addPresentationalDependency(dep);
+									} else {
+										const dep = new ConstDependency(
+											"0",
+											/** @type {Range} */ (expression.right.range)
+										);
+										dep.loc = /** @type {SourceLocation} */ (expression.loc);
+										parser.state.module.addPresentationalDependency(dep);
+										parser.walkExpression(expression.left);
+									}
+
+									return keepRight;
+								}
+							}
+						}
+					);
+					parser.hooks.optionalChaining.tap(PLUGIN_NAME, expr => {
+						/** @type {Expression[]} */
+						const optionalExpressionsStack = [];
+						/** @type {Expression | Super} */
+						let next = expr.expression;
+
+						while (
+							next.type === "MemberExpression" ||
+							next.type === "CallExpression"
+						) {
+							if (next.type === "MemberExpression") {
+								if (next.optional) {
+									// SuperNode can not be optional
+									optionalExpressionsStack.push(
+										/** @type {Expression} */ (next.object)
+									);
+								}
+								next = next.object;
+							} else {
+								if (next.optional) {
+									// SuperNode can not be optional
+									optionalExpressionsStack.push(
+										/** @type {Expression} */ (next.callee)
+									);
+								}
+								next = next.callee;
+							}
+						}
+
+						while (optionalExpressionsStack.length) {
+							const expression = optionalExpressionsStack.pop();
+							const evaluated = parser.evaluateExpression(
+								/** @type {Expression} */ (expression)
+							);
+
+							if (evaluated.asNullish()) {
+								// ------------------------------------------
+								//
+								// Given the following code:
+								//
+								//   nullishMemberChain?.a.b();
+								//
+								// the generated code is:
+								//
+								//   undefined;
+								//
+								// ------------------------------------------
+								//
+								const dep = new ConstDependency(
+									" undefined",
+									/** @type {Range} */ (expr.range)
+								);
+								dep.loc = /** @type {SourceLocation} */ (expr.loc);
+								parser.state.module.addPresentationalDependency(dep);
+								return true;
+							}
+						}
+					});
+					parser.hooks.evaluateIdentifier
+						.for("__resourceQuery")
+						.tap(PLUGIN_NAME, expr => {
+							if (parser.scope.isAsmJs) return;
+							if (!parser.state.module) return;
+							return evaluateToString(
+								cachedParseResource(parser.state.module.resource).query
+							)(expr);
+						});
+					parser.hooks.expression
+						.for("__resourceQuery")
+						.tap(PLUGIN_NAME, expr => {
+							if (parser.scope.isAsmJs) return;
+							if (!parser.state.module) return;
+							const dep = new CachedConstDependency(
+								JSON.stringify(
+									cachedParseResource(parser.state.module.resource).query
+								),
+								/** @type {Range} */ (expr.range),
+								"__resourceQuery"
+							);
+							dep.loc = /** @type {SourceLocation} */ (expr.loc);
+							parser.state.module.addPresentationalDependency(dep);
+							return true;
+						});
+
+					parser.hooks.evaluateIdentifier
+						.for("__resourceFragment")
+						.tap(PLUGIN_NAME, expr => {
+							if (parser.scope.isAsmJs) return;
+							if (!parser.state.module) return;
+							return evaluateToString(
+								cachedParseResource(parser.state.module.resource).fragment
+							)(expr);
+						});
+					parser.hooks.expression
+						.for("__resourceFragment")
+						.tap(PLUGIN_NAME, expr => {
+							if (parser.scope.isAsmJs) return;
+							if (!parser.state.module) return;
+							const dep = new CachedConstDependency(
+								JSON.stringify(
+									cachedParseResource(parser.state.module.resource).fragment
+								),
+								/** @type {Range} */ (expr.range),
+								"__resourceFragment"
+							);
+							dep.loc = /** @type {SourceLocation} */ (expr.loc);
+							parser.state.module.addPresentationalDependency(dep);
+							return true;
+						});
+				};
+
+				normalModuleFactory.hooks.parser
+					.for(JAVASCRIPT_MODULE_TYPE_AUTO)
+					.tap(PLUGIN_NAME, handler);
+				normalModuleFactory.hooks.parser
+					.for(JAVASCRIPT_MODULE_TYPE_DYNAMIC)
+					.tap(PLUGIN_NAME, handler);
+				normalModuleFactory.hooks.parser
+					.for(JAVASCRIPT_MODULE_TYPE_ESM)
+					.tap(PLUGIN_NAME, handler);
+			}
+		);
+	}
+}
+
+module.exports = ConstPlugin;