670 lines
20 KiB
JavaScript
670 lines
20 KiB
JavaScript
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/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const { fileURLToPath } = require("url");
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const CommentCompilationWarning = require("../CommentCompilationWarning");
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const RuntimeGlobals = require("../RuntimeGlobals");
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const UnsupportedFeatureWarning = require("../UnsupportedFeatureWarning");
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const WebpackError = require("../WebpackError");
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const BasicEvaluatedExpression = require("../javascript/BasicEvaluatedExpression");
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const {
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evaluateToIdentifier,
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evaluateToString,
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expressionIsUnsupported,
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toConstantDependency
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} = require("../javascript/JavascriptParserHelpers");
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const CommonJsFullRequireDependency = require("./CommonJsFullRequireDependency");
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const CommonJsRequireContextDependency = require("./CommonJsRequireContextDependency");
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const CommonJsRequireDependency = require("./CommonJsRequireDependency");
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const ConstDependency = require("./ConstDependency");
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const ContextDependencyHelpers = require("./ContextDependencyHelpers");
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const LocalModuleDependency = require("./LocalModuleDependency");
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const { getLocalModule } = require("./LocalModulesHelpers");
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const RequireHeaderDependency = require("./RequireHeaderDependency");
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const RequireResolveContextDependency = require("./RequireResolveContextDependency");
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const RequireResolveDependency = require("./RequireResolveDependency");
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const RequireResolveHeaderDependency = require("./RequireResolveHeaderDependency");
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/** @typedef {import("estree").CallExpression} CallExpressionNode */
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/** @typedef {import("../../declarations/WebpackOptions").JavascriptParserOptions} JavascriptParserOptions */
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const createRequireSpecifierTag = Symbol("createRequire");
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const createdRequireIdentifierTag = Symbol("createRequire()");
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class CommonJsImportsParserPlugin {
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/**
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* @param {JavascriptParserOptions} options parser options
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*/
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constructor(options) {
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this.options = options;
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}
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apply(parser) {
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const options = this.options;
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const getContext = () => {
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if (parser.currentTagData) {
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const { context } = parser.currentTagData;
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return context;
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}
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};
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//#region metadata
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const tapRequireExpression = (expression, getMembers) => {
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parser.hooks.typeof
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.for(expression)
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.tap(
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"CommonJsImportsParserPlugin",
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toConstantDependency(parser, JSON.stringify("function"))
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);
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parser.hooks.evaluateTypeof
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.for(expression)
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.tap("CommonJsImportsParserPlugin", evaluateToString("function"));
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parser.hooks.evaluateIdentifier
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.for(expression)
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.tap(
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"CommonJsImportsParserPlugin",
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evaluateToIdentifier(expression, "require", getMembers, true)
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);
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};
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const tapRequireExpressionTag = tag => {
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parser.hooks.typeof
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.for(tag)
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.tap(
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"CommonJsImportsParserPlugin",
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toConstantDependency(parser, JSON.stringify("function"))
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);
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parser.hooks.evaluateTypeof
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.for(tag)
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.tap("CommonJsImportsParserPlugin", evaluateToString("function"));
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};
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tapRequireExpression("require", () => []);
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tapRequireExpression("require.resolve", () => ["resolve"]);
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tapRequireExpression("require.resolveWeak", () => ["resolveWeak"]);
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//#endregion
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// Weird stuff //
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parser.hooks.assign
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.for("require")
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.tap("CommonJsImportsParserPlugin", expr => {
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// to not leak to global "require", we need to define a local require here.
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const dep = new ConstDependency("var require;", 0);
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dep.loc = expr.loc;
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parser.state.module.addPresentationalDependency(dep);
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return true;
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});
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//#region Unsupported
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parser.hooks.expression
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.for("require.main")
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.tap(
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"CommonJsImportsParserPlugin",
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expressionIsUnsupported(
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parser,
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"require.main is not supported by webpack."
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)
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);
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parser.hooks.call
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.for("require.main.require")
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.tap(
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"CommonJsImportsParserPlugin",
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expressionIsUnsupported(
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parser,
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"require.main.require is not supported by webpack."
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)
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);
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parser.hooks.expression
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.for("module.parent.require")
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.tap(
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"CommonJsImportsParserPlugin",
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expressionIsUnsupported(
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parser,
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"module.parent.require is not supported by webpack."
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)
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);
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parser.hooks.call
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.for("module.parent.require")
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.tap(
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"CommonJsImportsParserPlugin",
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expressionIsUnsupported(
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parser,
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"module.parent.require is not supported by webpack."
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)
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);
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//#endregion
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//#region Renaming
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const defineUndefined = expr => {
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// To avoid "not defined" error, replace the value with undefined
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const dep = new ConstDependency("undefined", expr.range);
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dep.loc = expr.loc;
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parser.state.module.addPresentationalDependency(dep);
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return false;
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};
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parser.hooks.canRename
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.for("require")
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.tap("CommonJsImportsParserPlugin", () => true);
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parser.hooks.rename
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.for("require")
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.tap("CommonJsImportsParserPlugin", defineUndefined);
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//#endregion
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//#region Inspection
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const requireCache = toConstantDependency(
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parser,
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RuntimeGlobals.moduleCache,
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[
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RuntimeGlobals.moduleCache,
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RuntimeGlobals.moduleId,
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RuntimeGlobals.moduleLoaded
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]
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);
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parser.hooks.expression
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.for("require.cache")
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.tap("CommonJsImportsParserPlugin", requireCache);
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//#endregion
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//#region Require as expression
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const requireAsExpressionHandler = expr => {
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const dep = new CommonJsRequireContextDependency(
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{
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request: options.unknownContextRequest,
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recursive: options.unknownContextRecursive,
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regExp: options.unknownContextRegExp,
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mode: "sync"
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},
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expr.range,
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undefined,
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parser.scope.inShorthand,
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getContext()
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);
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dep.critical =
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options.unknownContextCritical &&
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"require function is used in a way in which dependencies cannot be statically extracted";
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dep.loc = expr.loc;
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dep.optional = !!parser.scope.inTry;
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parser.state.current.addDependency(dep);
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return true;
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};
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parser.hooks.expression
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.for("require")
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.tap("CommonJsImportsParserPlugin", requireAsExpressionHandler);
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//#endregion
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//#region Require
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const processRequireItem = (expr, param) => {
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if (param.isString()) {
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const dep = new CommonJsRequireDependency(
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param.string,
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param.range,
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getContext()
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);
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dep.loc = expr.loc;
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dep.optional = !!parser.scope.inTry;
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parser.state.current.addDependency(dep);
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return true;
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}
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};
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const processRequireContext = (expr, param) => {
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const dep = ContextDependencyHelpers.create(
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CommonJsRequireContextDependency,
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expr.range,
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param,
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expr,
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options,
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{
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category: "commonjs"
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},
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parser,
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undefined,
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getContext()
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);
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if (!dep) return;
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dep.loc = expr.loc;
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dep.optional = !!parser.scope.inTry;
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parser.state.current.addDependency(dep);
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return true;
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};
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const createRequireHandler = callNew => expr => {
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if (options.commonjsMagicComments) {
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const { options: requireOptions, errors: commentErrors } =
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parser.parseCommentOptions(expr.range);
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if (commentErrors) {
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for (const e of commentErrors) {
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const { comment } = e;
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parser.state.module.addWarning(
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new CommentCompilationWarning(
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`Compilation error while processing magic comment(-s): /*${comment.value}*/: ${e.message}`,
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comment.loc
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)
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);
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}
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}
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if (requireOptions) {
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if (requireOptions.webpackIgnore !== undefined) {
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if (typeof requireOptions.webpackIgnore !== "boolean") {
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parser.state.module.addWarning(
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new UnsupportedFeatureWarning(
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`\`webpackIgnore\` expected a boolean, but received: ${requireOptions.webpackIgnore}.`,
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expr.loc
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)
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);
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} else {
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// Do not instrument `require()` if `webpackIgnore` is `true`
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if (requireOptions.webpackIgnore) {
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return true;
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}
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}
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}
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}
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}
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if (expr.arguments.length !== 1) return;
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let localModule;
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const param = parser.evaluateExpression(expr.arguments[0]);
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if (param.isConditional()) {
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let isExpression = false;
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for (const p of param.options) {
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const result = processRequireItem(expr, p);
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if (result === undefined) {
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isExpression = true;
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}
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}
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if (!isExpression) {
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const dep = new RequireHeaderDependency(expr.callee.range);
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dep.loc = expr.loc;
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parser.state.module.addPresentationalDependency(dep);
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return true;
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}
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}
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if (
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param.isString() &&
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(localModule = getLocalModule(parser.state, param.string))
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) {
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localModule.flagUsed();
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const dep = new LocalModuleDependency(localModule, expr.range, callNew);
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dep.loc = expr.loc;
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parser.state.module.addPresentationalDependency(dep);
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return true;
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} else {
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const result = processRequireItem(expr, param);
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if (result === undefined) {
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processRequireContext(expr, param);
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} else {
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const dep = new RequireHeaderDependency(expr.callee.range);
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dep.loc = expr.loc;
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parser.state.module.addPresentationalDependency(dep);
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}
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return true;
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}
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};
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parser.hooks.call
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.for("require")
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.tap("CommonJsImportsParserPlugin", createRequireHandler(false));
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parser.hooks.new
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.for("require")
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.tap("CommonJsImportsParserPlugin", createRequireHandler(true));
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parser.hooks.call
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.for("module.require")
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.tap("CommonJsImportsParserPlugin", createRequireHandler(false));
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parser.hooks.new
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.for("module.require")
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.tap("CommonJsImportsParserPlugin", createRequireHandler(true));
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//#endregion
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//#region Require with property access
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const chainHandler = (expr, calleeMembers, callExpr, members) => {
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if (callExpr.arguments.length !== 1) return;
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const param = parser.evaluateExpression(callExpr.arguments[0]);
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if (param.isString() && !getLocalModule(parser.state, param.string)) {
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const dep = new CommonJsFullRequireDependency(
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param.string,
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expr.range,
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members
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);
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dep.asiSafe = !parser.isAsiPosition(expr.range[0]);
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dep.optional = !!parser.scope.inTry;
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dep.loc = expr.loc;
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parser.state.current.addDependency(dep);
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return true;
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}
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};
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const callChainHandler = (expr, calleeMembers, callExpr, members) => {
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if (callExpr.arguments.length !== 1) return;
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const param = parser.evaluateExpression(callExpr.arguments[0]);
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if (param.isString() && !getLocalModule(parser.state, param.string)) {
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const dep = new CommonJsFullRequireDependency(
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param.string,
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expr.callee.range,
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members
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);
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dep.call = true;
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dep.asiSafe = !parser.isAsiPosition(expr.range[0]);
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dep.optional = !!parser.scope.inTry;
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dep.loc = expr.callee.loc;
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parser.state.current.addDependency(dep);
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parser.walkExpressions(expr.arguments);
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return true;
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}
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};
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parser.hooks.memberChainOfCallMemberChain
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.for("require")
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.tap("CommonJsImportsParserPlugin", chainHandler);
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parser.hooks.memberChainOfCallMemberChain
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.for("module.require")
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.tap("CommonJsImportsParserPlugin", chainHandler);
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parser.hooks.callMemberChainOfCallMemberChain
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.for("require")
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.tap("CommonJsImportsParserPlugin", callChainHandler);
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parser.hooks.callMemberChainOfCallMemberChain
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.for("module.require")
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.tap("CommonJsImportsParserPlugin", callChainHandler);
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//#endregion
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|
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//#region Require.resolve
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const processResolve = (expr, weak) => {
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if (expr.arguments.length !== 1) return;
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const param = parser.evaluateExpression(expr.arguments[0]);
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if (param.isConditional()) {
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for (const option of param.options) {
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const result = processResolveItem(expr, option, weak);
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if (result === undefined) {
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processResolveContext(expr, option, weak);
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}
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}
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const dep = new RequireResolveHeaderDependency(expr.callee.range);
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dep.loc = expr.loc;
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parser.state.module.addPresentationalDependency(dep);
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return true;
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} else {
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const result = processResolveItem(expr, param, weak);
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|
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if (result === undefined) {
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processResolveContext(expr, param, weak);
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}
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|
|
const dep = new RequireResolveHeaderDependency(expr.callee.range);
|
||
|
|
dep.loc = expr.loc;
|
||
|
|
parser.state.module.addPresentationalDependency(dep);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
const processResolveItem = (expr, param, weak) => {
|
||
|
|
if (param.isString()) {
|
||
|
|
const dep = new RequireResolveDependency(
|
||
|
|
param.string,
|
||
|
|
param.range,
|
||
|
|
getContext()
|
||
|
|
);
|
||
|
|
dep.loc = expr.loc;
|
||
|
|
dep.optional = !!parser.scope.inTry;
|
||
|
|
dep.weak = weak;
|
||
|
|
parser.state.current.addDependency(dep);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
const processResolveContext = (expr, param, weak) => {
|
||
|
|
const dep = ContextDependencyHelpers.create(
|
||
|
|
RequireResolveContextDependency,
|
||
|
|
param.range,
|
||
|
|
param,
|
||
|
|
expr,
|
||
|
|
options,
|
||
|
|
{
|
||
|
|
category: "commonjs",
|
||
|
|
mode: weak ? "weak" : "sync"
|
||
|
|
},
|
||
|
|
parser,
|
||
|
|
getContext()
|
||
|
|
);
|
||
|
|
if (!dep) return;
|
||
|
|
dep.loc = expr.loc;
|
||
|
|
dep.optional = !!parser.scope.inTry;
|
||
|
|
parser.state.current.addDependency(dep);
|
||
|
|
return true;
|
||
|
|
};
|
||
|
|
|
||
|
|
parser.hooks.call
|
||
|
|
.for("require.resolve")
|
||
|
|
.tap("CommonJsImportsParserPlugin", expr => {
|
||
|
|
return processResolve(expr, false);
|
||
|
|
});
|
||
|
|
parser.hooks.call
|
||
|
|
.for("require.resolveWeak")
|
||
|
|
.tap("CommonJsImportsParserPlugin", expr => {
|
||
|
|
return processResolve(expr, true);
|
||
|
|
});
|
||
|
|
//#endregion
|
||
|
|
|
||
|
|
//#region Create require
|
||
|
|
|
||
|
|
if (!options.createRequire) return;
|
||
|
|
|
||
|
|
let moduleName;
|
||
|
|
let specifierName;
|
||
|
|
|
||
|
|
if (options.createRequire === true) {
|
||
|
|
moduleName = "module";
|
||
|
|
specifierName = "createRequire";
|
||
|
|
} else {
|
||
|
|
const match = /^(.*) from (.*)$/.exec(options.createRequire);
|
||
|
|
if (match) {
|
||
|
|
[, specifierName, moduleName] = match;
|
||
|
|
}
|
||
|
|
if (!specifierName || !moduleName) {
|
||
|
|
const err = new WebpackError(
|
||
|
|
`Parsing javascript parser option "createRequire" failed, got ${JSON.stringify(
|
||
|
|
options.createRequire
|
||
|
|
)}`
|
||
|
|
);
|
||
|
|
err.details =
|
||
|
|
'Expected string in format "createRequire from module", where "createRequire" is specifier name and "module" name of the module';
|
||
|
|
throw err;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
tapRequireExpressionTag(createdRequireIdentifierTag);
|
||
|
|
tapRequireExpressionTag(createRequireSpecifierTag);
|
||
|
|
parser.hooks.evaluateCallExpression
|
||
|
|
.for(createRequireSpecifierTag)
|
||
|
|
.tap("CommonJsImportsParserPlugin", expr => {
|
||
|
|
const context = parseCreateRequireArguments(expr);
|
||
|
|
if (context === undefined) return;
|
||
|
|
const ident = parser.evaluatedVariable({
|
||
|
|
tag: createdRequireIdentifierTag,
|
||
|
|
data: { context },
|
||
|
|
next: undefined
|
||
|
|
});
|
||
|
|
return new BasicEvaluatedExpression()
|
||
|
|
.setIdentifier(ident, ident, () => [])
|
||
|
|
.setSideEffects(false)
|
||
|
|
.setRange(expr.range);
|
||
|
|
});
|
||
|
|
parser.hooks.unhandledExpressionMemberChain
|
||
|
|
.for(createdRequireIdentifierTag)
|
||
|
|
.tap("CommonJsImportsParserPlugin", (expr, members) => {
|
||
|
|
return expressionIsUnsupported(
|
||
|
|
parser,
|
||
|
|
`createRequire().${members.join(".")} is not supported by webpack.`
|
||
|
|
)(expr);
|
||
|
|
});
|
||
|
|
parser.hooks.canRename
|
||
|
|
.for(createdRequireIdentifierTag)
|
||
|
|
.tap("CommonJsImportsParserPlugin", () => true);
|
||
|
|
parser.hooks.canRename
|
||
|
|
.for(createRequireSpecifierTag)
|
||
|
|
.tap("CommonJsImportsParserPlugin", () => true);
|
||
|
|
parser.hooks.rename
|
||
|
|
.for(createRequireSpecifierTag)
|
||
|
|
.tap("CommonJsImportsParserPlugin", defineUndefined);
|
||
|
|
parser.hooks.expression
|
||
|
|
.for(createdRequireIdentifierTag)
|
||
|
|
.tap("CommonJsImportsParserPlugin", requireAsExpressionHandler);
|
||
|
|
parser.hooks.call
|
||
|
|
.for(createdRequireIdentifierTag)
|
||
|
|
.tap("CommonJsImportsParserPlugin", createRequireHandler(false));
|
||
|
|
/**
|
||
|
|
* @param {CallExpressionNode} expr call expression
|
||
|
|
* @returns {string} context
|
||
|
|
*/
|
||
|
|
const parseCreateRequireArguments = expr => {
|
||
|
|
const args = expr.arguments;
|
||
|
|
if (args.length !== 1) {
|
||
|
|
const err = new WebpackError(
|
||
|
|
"module.createRequire supports only one argument."
|
||
|
|
);
|
||
|
|
err.loc = expr.loc;
|
||
|
|
parser.state.module.addWarning(err);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
const arg = args[0];
|
||
|
|
const evaluated = parser.evaluateExpression(arg);
|
||
|
|
if (!evaluated.isString()) {
|
||
|
|
const err = new WebpackError(
|
||
|
|
"module.createRequire failed parsing argument."
|
||
|
|
);
|
||
|
|
err.loc = arg.loc;
|
||
|
|
parser.state.module.addWarning(err);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
const ctx = evaluated.string.startsWith("file://")
|
||
|
|
? fileURLToPath(evaluated.string)
|
||
|
|
: evaluated.string;
|
||
|
|
// argument always should be a filename
|
||
|
|
return ctx.slice(0, ctx.lastIndexOf(ctx.startsWith("/") ? "/" : "\\"));
|
||
|
|
};
|
||
|
|
|
||
|
|
parser.hooks.import.tap(
|
||
|
|
{
|
||
|
|
name: "CommonJsImportsParserPlugin",
|
||
|
|
stage: -10
|
||
|
|
},
|
||
|
|
(statement, source) => {
|
||
|
|
if (
|
||
|
|
source !== moduleName ||
|
||
|
|
statement.specifiers.length !== 1 ||
|
||
|
|
statement.specifiers[0].type !== "ImportSpecifier" ||
|
||
|
|
statement.specifiers[0].imported.type !== "Identifier" ||
|
||
|
|
statement.specifiers[0].imported.name !== specifierName
|
||
|
|
)
|
||
|
|
return;
|
||
|
|
// clear for 'import { createRequire as x } from "module"'
|
||
|
|
// if any other specifier was used import module
|
||
|
|
const clearDep = new ConstDependency(
|
||
|
|
parser.isAsiPosition(statement.range[0]) ? ";" : "",
|
||
|
|
statement.range
|
||
|
|
);
|
||
|
|
clearDep.loc = statement.loc;
|
||
|
|
parser.state.module.addPresentationalDependency(clearDep);
|
||
|
|
parser.unsetAsiPosition(statement.range[1]);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
);
|
||
|
|
parser.hooks.importSpecifier.tap(
|
||
|
|
{
|
||
|
|
name: "CommonJsImportsParserPlugin",
|
||
|
|
stage: -10
|
||
|
|
},
|
||
|
|
(statement, source, id, name) => {
|
||
|
|
if (source !== moduleName || id !== specifierName) return;
|
||
|
|
parser.tagVariable(name, createRequireSpecifierTag);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
);
|
||
|
|
parser.hooks.preDeclarator.tap(
|
||
|
|
"CommonJsImportsParserPlugin",
|
||
|
|
declarator => {
|
||
|
|
if (
|
||
|
|
declarator.id.type !== "Identifier" ||
|
||
|
|
!declarator.init ||
|
||
|
|
declarator.init.type !== "CallExpression" ||
|
||
|
|
declarator.init.callee.type !== "Identifier"
|
||
|
|
)
|
||
|
|
return;
|
||
|
|
const variableInfo = parser.getVariableInfo(
|
||
|
|
declarator.init.callee.name
|
||
|
|
);
|
||
|
|
if (
|
||
|
|
variableInfo &&
|
||
|
|
variableInfo.tagInfo &&
|
||
|
|
variableInfo.tagInfo.tag === createRequireSpecifierTag
|
||
|
|
) {
|
||
|
|
const context = parseCreateRequireArguments(declarator.init);
|
||
|
|
if (context === undefined) return;
|
||
|
|
parser.tagVariable(declarator.id.name, createdRequireIdentifierTag, {
|
||
|
|
name: declarator.id.name,
|
||
|
|
context
|
||
|
|
});
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
);
|
||
|
|
|
||
|
|
parser.hooks.memberChainOfCallMemberChain
|
||
|
|
.for(createRequireSpecifierTag)
|
||
|
|
.tap(
|
||
|
|
"CommonJsImportsParserPlugin",
|
||
|
|
(expr, calleeMembers, callExpr, members) => {
|
||
|
|
if (
|
||
|
|
calleeMembers.length !== 0 ||
|
||
|
|
members.length !== 1 ||
|
||
|
|
members[0] !== "cache"
|
||
|
|
)
|
||
|
|
return;
|
||
|
|
// createRequire().cache
|
||
|
|
const context = parseCreateRequireArguments(callExpr);
|
||
|
|
if (context === undefined) return;
|
||
|
|
return requireCache(expr);
|
||
|
|
}
|
||
|
|
);
|
||
|
|
parser.hooks.callMemberChainOfCallMemberChain
|
||
|
|
.for(createRequireSpecifierTag)
|
||
|
|
.tap(
|
||
|
|
"CommonJsImportsParserPlugin",
|
||
|
|
(expr, calleeMembers, innerCallExpression, members) => {
|
||
|
|
if (
|
||
|
|
calleeMembers.length !== 0 ||
|
||
|
|
members.length !== 1 ||
|
||
|
|
members[0] !== "resolve"
|
||
|
|
)
|
||
|
|
return;
|
||
|
|
// createRequire().resolve()
|
||
|
|
return processResolve(expr, false);
|
||
|
|
}
|
||
|
|
);
|
||
|
|
parser.hooks.expressionMemberChain
|
||
|
|
.for(createdRequireIdentifierTag)
|
||
|
|
.tap("CommonJsImportsParserPlugin", (expr, members) => {
|
||
|
|
// require.cache
|
||
|
|
if (members.length === 1 && members[0] === "cache") {
|
||
|
|
return requireCache(expr);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
parser.hooks.callMemberChain
|
||
|
|
.for(createdRequireIdentifierTag)
|
||
|
|
.tap("CommonJsImportsParserPlugin", (expr, members) => {
|
||
|
|
// require.resolve()
|
||
|
|
if (members.length === 1 && members[0] === "resolve") {
|
||
|
|
return processResolve(expr, false);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
parser.hooks.call
|
||
|
|
.for(createRequireSpecifierTag)
|
||
|
|
.tap("CommonJsImportsParserPlugin", expr => {
|
||
|
|
const clearDep = new ConstDependency(
|
||
|
|
"/* createRequire() */ undefined",
|
||
|
|
expr.range
|
||
|
|
);
|
||
|
|
clearDep.loc = expr.loc;
|
||
|
|
parser.state.module.addPresentationalDependency(clearDep);
|
||
|
|
return true;
|
||
|
|
});
|
||
|
|
//#endregion
|
||
|
|
}
|
||
|
|
}
|
||
|
|
module.exports = CommonJsImportsParserPlugin;
|