diff options
| author | littleblack111 <littleblack11111@gmail.com> | 2023-11-05 17:23:37 +0800 |
|---|---|---|
| committer | littleblack111 <littleblack11111@gmail.com> | 2023-11-05 17:23:37 +0800 |
| commit | 2cdf0cb352ab6a2d0f8cb25120e4ebc92c5316e3 (patch) | |
| tree | 6b088c99810bd013f17b80522c936ca6dfc09858 /node_modules/webpack/lib/dependencies/CommonJsExportsParserPlugin.js | |
| parent | f8ee6ef722e6c560c4a1c879e04dbdf0b01f0316 (diff) | |
removed autoprefix hover as it will have a high chance of making hover stopped working
Diffstat (limited to 'node_modules/webpack/lib/dependencies/CommonJsExportsParserPlugin.js')
| -rw-r--r-- | node_modules/webpack/lib/dependencies/CommonJsExportsParserPlugin.js | 407 |
1 files changed, 0 insertions, 407 deletions
diff --git a/node_modules/webpack/lib/dependencies/CommonJsExportsParserPlugin.js b/node_modules/webpack/lib/dependencies/CommonJsExportsParserPlugin.js deleted file mode 100644 index ce3e998f..00000000 --- a/node_modules/webpack/lib/dependencies/CommonJsExportsParserPlugin.js +++ /dev/null @@ -1,407 +0,0 @@ -/* - MIT License http://www.opensource.org/licenses/mit-license.php - Author Tobias Koppers @sokra -*/ - -"use strict"; - -const RuntimeGlobals = require("../RuntimeGlobals"); -const formatLocation = require("../formatLocation"); -const { evaluateToString } = require("../javascript/JavascriptParserHelpers"); -const propertyAccess = require("../util/propertyAccess"); -const CommonJsExportRequireDependency = require("./CommonJsExportRequireDependency"); -const CommonJsExportsDependency = require("./CommonJsExportsDependency"); -const CommonJsSelfReferenceDependency = require("./CommonJsSelfReferenceDependency"); -const DynamicExports = require("./DynamicExports"); -const HarmonyExports = require("./HarmonyExports"); -const ModuleDecoratorDependency = require("./ModuleDecoratorDependency"); - -/** @typedef {import("estree").AssignmentExpression} AssignmentExpression */ -/** @typedef {import("estree").CallExpression} CallExpression */ -/** @typedef {import("estree").Expression} Expression */ -/** @typedef {import("estree").Super} Super */ - -/** @typedef {import("../ModuleGraph")} ModuleGraph */ -/** @typedef {import("../NormalModule")} NormalModule */ -/** @typedef {import("../javascript/BasicEvaluatedExpression")} BasicEvaluatedExpression */ -/** @typedef {import("../javascript/JavascriptParser")} JavascriptParser */ -/** @typedef {import("./CommonJsDependencyHelpers").CommonJSDependencyBaseKeywords} CommonJSDependencyBaseKeywords */ - -/** - * This function takes a generic expression and detects whether it is an ObjectExpression. - * This is used in the context of parsing CommonJS exports to get the value of the property descriptor - * when the `exports` object is assigned to `Object.defineProperty`. - * - * In CommonJS modules, the `exports` object can be assigned to `Object.defineProperty` and therefore - * webpack has to detect this case and get the value key of the property descriptor. See the following example - * for more information: https://astexplorer.net/#/gist/83ce51a4e96e59d777df315a6d111da6/8058ead48a1bb53c097738225db0967ef7f70e57 - * - * This would be an example of a CommonJS module that exports an object with a property descriptor: - * ```js - * Object.defineProperty(exports, "__esModule", { value: true }); - * exports.foo = void 0; - * exports.foo = "bar"; - * ``` - * - * @param {TODO} expr expression - * @returns {Expression | undefined} returns the value of property descriptor - */ -const getValueOfPropertyDescription = expr => { - if (expr.type !== "ObjectExpression") return; - for (const property of expr.properties) { - if (property.computed) continue; - const key = property.key; - if (key.type !== "Identifier" || key.name !== "value") continue; - return property.value; - } -}; - -/** - * The purpose of this function is to check whether an expression is a truthy literal or not. This is - * useful when parsing CommonJS exports, because CommonJS modules can export any value, including falsy - * values like `null` and `false`. However, exports should only be created if the exported value is truthy. - * - * @param {Expression} expr expression being checked - * @returns {boolean} true, when the expression is a truthy literal - * - */ -const isTruthyLiteral = expr => { - switch (expr.type) { - case "Literal": - return !!expr.value; - case "UnaryExpression": - if (expr.operator === "!") return isFalsyLiteral(expr.argument); - } - return false; -}; - -/** - * The purpose of this function is to check whether an expression is a falsy literal or not. This is - * useful when parsing CommonJS exports, because CommonJS modules can export any value, including falsy - * values like `null` and `false`. However, exports should only be created if the exported value is truthy. - * - * @param {Expression} expr expression being checked - * @returns {boolean} true, when the expression is a falsy literal - */ -const isFalsyLiteral = expr => { - switch (expr.type) { - case "Literal": - return !expr.value; - case "UnaryExpression": - if (expr.operator === "!") return isTruthyLiteral(expr.argument); - } - return false; -}; - -/** - * @param {JavascriptParser} parser the parser - * @param {Expression} expr expression - * @returns {{ argument: BasicEvaluatedExpression, ids: string[] } | undefined} parsed call - */ -const parseRequireCall = (parser, expr) => { - const ids = []; - while (expr.type === "MemberExpression") { - if (expr.object.type === "Super") return; - if (!expr.property) return; - const prop = expr.property; - if (expr.computed) { - if (prop.type !== "Literal") return; - ids.push(`${prop.value}`); - } else { - if (prop.type !== "Identifier") return; - ids.push(prop.name); - } - expr = expr.object; - } - if (expr.type !== "CallExpression" || expr.arguments.length !== 1) return; - const callee = expr.callee; - if ( - callee.type !== "Identifier" || - parser.getVariableInfo(callee.name) !== "require" - ) { - return; - } - const arg = expr.arguments[0]; - if (arg.type === "SpreadElement") return; - const argValue = parser.evaluateExpression(arg); - return { argument: argValue, ids: ids.reverse() }; -}; - -class CommonJsExportsParserPlugin { - /** - * @param {ModuleGraph} moduleGraph module graph - */ - constructor(moduleGraph) { - this.moduleGraph = moduleGraph; - } - - /** - * @param {JavascriptParser} parser the parser - * @returns {void} - */ - apply(parser) { - const enableStructuredExports = () => { - DynamicExports.enable(parser.state); - }; - - /** - * @param {boolean} topLevel true, when the export is on top level - * @param {string[]} members members of the export - * @param {Expression | undefined} valueExpr expression for the value - * @returns {void} - */ - const checkNamespace = (topLevel, members, valueExpr) => { - if (!DynamicExports.isEnabled(parser.state)) return; - if (members.length > 0 && members[0] === "__esModule") { - if (valueExpr && isTruthyLiteral(valueExpr) && topLevel) { - DynamicExports.setFlagged(parser.state); - } else { - DynamicExports.setDynamic(parser.state); - } - } - }; - /** - * @param {string=} reason reason - */ - const bailout = reason => { - DynamicExports.bailout(parser.state); - if (reason) bailoutHint(reason); - }; - /** - * @param {string} reason reason - */ - const bailoutHint = reason => { - this.moduleGraph - .getOptimizationBailout(parser.state.module) - .push(`CommonJS bailout: ${reason}`); - }; - - // metadata // - parser.hooks.evaluateTypeof - .for("module") - .tap("CommonJsExportsParserPlugin", evaluateToString("object")); - parser.hooks.evaluateTypeof - .for("exports") - .tap("CommonJsPlugin", evaluateToString("object")); - - // exporting // - - /** - * @param {AssignmentExpression} expr expression - * @param {CommonJSDependencyBaseKeywords} base commonjs base keywords - * @param {string[]} members members of the export - * @returns {boolean} true, when the expression was handled - */ - const handleAssignExport = (expr, base, members) => { - if (HarmonyExports.isEnabled(parser.state)) return; - // Handle reexporting - const requireCall = parseRequireCall(parser, expr.right); - if ( - requireCall && - requireCall.argument.isString() && - (members.length === 0 || members[0] !== "__esModule") - ) { - enableStructuredExports(); - // It's possible to reexport __esModule, so we must convert to a dynamic module - if (members.length === 0) DynamicExports.setDynamic(parser.state); - const dep = new CommonJsExportRequireDependency( - expr.range, - null, - base, - members, - requireCall.argument.string, - requireCall.ids, - !parser.isStatementLevelExpression(expr) - ); - dep.loc = expr.loc; - dep.optional = !!parser.scope.inTry; - parser.state.module.addDependency(dep); - return true; - } - if (members.length === 0) return; - enableStructuredExports(); - const remainingMembers = members; - checkNamespace( - parser.statementPath.length === 1 && - parser.isStatementLevelExpression(expr), - remainingMembers, - expr.right - ); - const dep = new CommonJsExportsDependency( - expr.left.range, - null, - base, - remainingMembers - ); - dep.loc = expr.loc; - parser.state.module.addDependency(dep); - parser.walkExpression(expr.right); - return true; - }; - parser.hooks.assignMemberChain - .for("exports") - .tap("CommonJsExportsParserPlugin", (expr, members) => { - return handleAssignExport(expr, "exports", members); - }); - parser.hooks.assignMemberChain - .for("this") - .tap("CommonJsExportsParserPlugin", (expr, members) => { - if (!parser.scope.topLevelScope) return; - return handleAssignExport(expr, "this", members); - }); - parser.hooks.assignMemberChain - .for("module") - .tap("CommonJsExportsParserPlugin", (expr, members) => { - if (members[0] !== "exports") return; - return handleAssignExport(expr, "module.exports", members.slice(1)); - }); - parser.hooks.call - .for("Object.defineProperty") - .tap("CommonJsExportsParserPlugin", expression => { - const expr = /** @type {CallExpression} */ (expression); - if (!parser.isStatementLevelExpression(expr)) return; - if (expr.arguments.length !== 3) return; - if (expr.arguments[0].type === "SpreadElement") return; - if (expr.arguments[1].type === "SpreadElement") return; - if (expr.arguments[2].type === "SpreadElement") return; - const exportsArg = parser.evaluateExpression(expr.arguments[0]); - if (!exportsArg.isIdentifier()) return; - if ( - exportsArg.identifier !== "exports" && - exportsArg.identifier !== "module.exports" && - (exportsArg.identifier !== "this" || !parser.scope.topLevelScope) - ) { - return; - } - const propertyArg = parser.evaluateExpression(expr.arguments[1]); - const property = propertyArg.asString(); - if (typeof property !== "string") return; - enableStructuredExports(); - const descArg = expr.arguments[2]; - checkNamespace( - parser.statementPath.length === 1, - [property], - getValueOfPropertyDescription(descArg) - ); - const dep = new CommonJsExportsDependency( - expr.range, - expr.arguments[2].range, - `Object.defineProperty(${exportsArg.identifier})`, - [property] - ); - dep.loc = expr.loc; - parser.state.module.addDependency(dep); - - parser.walkExpression(expr.arguments[2]); - return true; - }); - - // Self reference // - - /** - * @param {Expression | Super} expr expression - * @param {CommonJSDependencyBaseKeywords} base commonjs base keywords - * @param {string[]} members members of the export - * @param {CallExpression=} call call expression - * @returns {boolean | void} true, when the expression was handled - */ - const handleAccessExport = (expr, base, members, call = undefined) => { - if (HarmonyExports.isEnabled(parser.state)) return; - if (members.length === 0) { - bailout(`${base} is used directly at ${formatLocation(expr.loc)}`); - } - if (call && members.length === 1) { - bailoutHint( - `${base}${propertyAccess( - members - )}(...) prevents optimization as ${base} is passed as call context at ${formatLocation( - expr.loc - )}` - ); - } - const dep = new CommonJsSelfReferenceDependency( - expr.range, - base, - members, - !!call - ); - dep.loc = expr.loc; - parser.state.module.addDependency(dep); - if (call) { - parser.walkExpressions(call.arguments); - } - return true; - }; - parser.hooks.callMemberChain - .for("exports") - .tap("CommonJsExportsParserPlugin", (expr, members) => { - return handleAccessExport(expr.callee, "exports", members, expr); - }); - parser.hooks.expressionMemberChain - .for("exports") - .tap("CommonJsExportsParserPlugin", (expr, members) => { - return handleAccessExport(expr, "exports", members); - }); - parser.hooks.expression - .for("exports") - .tap("CommonJsExportsParserPlugin", expr => { - return handleAccessExport(expr, "exports", []); - }); - parser.hooks.callMemberChain - .for("module") - .tap("CommonJsExportsParserPlugin", (expr, members) => { - if (members[0] !== "exports") return; - return handleAccessExport( - expr.callee, - "module.exports", - members.slice(1), - expr - ); - }); - parser.hooks.expressionMemberChain - .for("module") - .tap("CommonJsExportsParserPlugin", (expr, members) => { - if (members[0] !== "exports") return; - return handleAccessExport(expr, "module.exports", members.slice(1)); - }); - parser.hooks.expression - .for("module.exports") - .tap("CommonJsExportsParserPlugin", expr => { - return handleAccessExport(expr, "module.exports", []); - }); - parser.hooks.callMemberChain - .for("this") - .tap("CommonJsExportsParserPlugin", (expr, members) => { - if (!parser.scope.topLevelScope) return; - return handleAccessExport(expr.callee, "this", members, expr); - }); - parser.hooks.expressionMemberChain - .for("this") - .tap("CommonJsExportsParserPlugin", (expr, members) => { - if (!parser.scope.topLevelScope) return; - return handleAccessExport(expr, "this", members); - }); - parser.hooks.expression - .for("this") - .tap("CommonJsExportsParserPlugin", expr => { - if (!parser.scope.topLevelScope) return; - return handleAccessExport(expr, "this", []); - }); - - // Bailouts // - parser.hooks.expression.for("module").tap("CommonJsPlugin", expr => { - bailout(); - const isHarmony = HarmonyExports.isEnabled(parser.state); - const dep = new ModuleDecoratorDependency( - isHarmony - ? RuntimeGlobals.harmonyModuleDecorator - : RuntimeGlobals.nodeModuleDecorator, - !isHarmony - ); - dep.loc = expr.loc; - parser.state.module.addDependency(dep); - return true; - }); - } -} -module.exports = CommonJsExportsParserPlugin; |
