source: trip-planner-front/node_modules/webpack/lib/dependencies/ImportMetaPlugin.js@ 59329aa

Last change on this file since 59329aa was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit
  • Property mode set to 100644
File size: 5.6 KB
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1/*
2 MIT License http://www.opensource.org/licenses/mit-license.php
3 Author Ivan Kopeykin @vankop
4*/
5
6"use strict";
7
8const { pathToFileURL } = require("url");
9const ModuleDependencyWarning = require("../ModuleDependencyWarning");
10const Template = require("../Template");
11const BasicEvaluatedExpression = require("../javascript/BasicEvaluatedExpression");
12const {
13 evaluateToIdentifier,
14 toConstantDependency,
15 evaluateToString,
16 evaluateToNumber
17} = require("../javascript/JavascriptParserHelpers");
18const memoize = require("../util/memoize");
19const propertyAccess = require("../util/propertyAccess");
20const ConstDependency = require("./ConstDependency");
21
22/** @typedef {import("estree").MemberExpression} MemberExpression */
23/** @typedef {import("../Compiler")} Compiler */
24/** @typedef {import("../NormalModule")} NormalModule */
25/** @typedef {import("../javascript/JavascriptParser")} Parser */
26
27const getCriticalDependencyWarning = memoize(() =>
28 require("./CriticalDependencyWarning")
29);
30
31class ImportMetaPlugin {
32 /**
33 * @param {Compiler} compiler compiler
34 */
35 apply(compiler) {
36 compiler.hooks.compilation.tap(
37 "ImportMetaPlugin",
38 (compilation, { normalModuleFactory }) => {
39 /**
40 * @param {NormalModule} module module
41 * @returns {string} file url
42 */
43 const getUrl = module => {
44 return pathToFileURL(module.resource).toString();
45 };
46 /**
47 * @param {Parser} parser parser
48 * @param {Object} parserOptions parserOptions
49 * @returns {void}
50 */
51 const parserHandler = (parser, parserOptions) => {
52 /// import.meta direct ///
53 parser.hooks.typeof
54 .for("import.meta")
55 .tap(
56 "ImportMetaPlugin",
57 toConstantDependency(parser, JSON.stringify("object"))
58 );
59 parser.hooks.expression
60 .for("import.meta")
61 .tap("ImportMetaPlugin", metaProperty => {
62 const CriticalDependencyWarning = getCriticalDependencyWarning();
63 parser.state.module.addWarning(
64 new ModuleDependencyWarning(
65 parser.state.module,
66 new CriticalDependencyWarning(
67 "Accessing import.meta directly is unsupported (only property access is supported)"
68 ),
69 metaProperty.loc
70 )
71 );
72 const dep = new ConstDependency(
73 `${parser.isAsiPosition(metaProperty.range[0]) ? ";" : ""}({})`,
74 metaProperty.range
75 );
76 dep.loc = metaProperty.loc;
77 parser.state.module.addPresentationalDependency(dep);
78 return true;
79 });
80 parser.hooks.evaluateTypeof
81 .for("import.meta")
82 .tap("ImportMetaPlugin", evaluateToString("object"));
83 parser.hooks.evaluateIdentifier.for("import.meta").tap(
84 "ImportMetaPlugin",
85 evaluateToIdentifier("import.meta", "import.meta", () => [], true)
86 );
87
88 /// import.meta.url ///
89 parser.hooks.typeof
90 .for("import.meta.url")
91 .tap(
92 "ImportMetaPlugin",
93 toConstantDependency(parser, JSON.stringify("string"))
94 );
95 parser.hooks.expression
96 .for("import.meta.url")
97 .tap("ImportMetaPlugin", expr => {
98 const dep = new ConstDependency(
99 JSON.stringify(getUrl(parser.state.module)),
100 expr.range
101 );
102 dep.loc = expr.loc;
103 parser.state.module.addPresentationalDependency(dep);
104 return true;
105 });
106 parser.hooks.evaluateTypeof
107 .for("import.meta.url")
108 .tap("ImportMetaPlugin", evaluateToString("string"));
109 parser.hooks.evaluateIdentifier
110 .for("import.meta.url")
111 .tap("ImportMetaPlugin", expr => {
112 return new BasicEvaluatedExpression()
113 .setString(getUrl(parser.state.module))
114 .setRange(expr.range);
115 });
116
117 /// import.meta.webpack ///
118 const webpackVersion = parseInt(
119 require("../../package.json").version,
120 10
121 );
122 parser.hooks.typeof
123 .for("import.meta.webpack")
124 .tap(
125 "ImportMetaPlugin",
126 toConstantDependency(parser, JSON.stringify("number"))
127 );
128 parser.hooks.expression
129 .for("import.meta.webpack")
130 .tap(
131 "ImportMetaPlugin",
132 toConstantDependency(parser, JSON.stringify(webpackVersion))
133 );
134 parser.hooks.evaluateTypeof
135 .for("import.meta.webpack")
136 .tap("ImportMetaPlugin", evaluateToString("number"));
137 parser.hooks.evaluateIdentifier
138 .for("import.meta.webpack")
139 .tap("ImportMetaPlugin", evaluateToNumber(webpackVersion));
140
141 /// Unknown properties ///
142 parser.hooks.unhandledExpressionMemberChain
143 .for("import.meta")
144 .tap("ImportMetaPlugin", (expr, members) => {
145 const dep = new ConstDependency(
146 `${Template.toNormalComment(
147 "unsupported import.meta." + members.join(".")
148 )} undefined${propertyAccess(members, 1)}`,
149 expr.range
150 );
151 dep.loc = expr.loc;
152 parser.state.module.addPresentationalDependency(dep);
153 return true;
154 });
155 parser.hooks.evaluate
156 .for("MemberExpression")
157 .tap("ImportMetaPlugin", expression => {
158 const expr = /** @type {MemberExpression} */ (expression);
159 if (
160 expr.object.type === "MetaProperty" &&
161 expr.object.meta.name === "import" &&
162 expr.object.property.name === "meta" &&
163 expr.property.type ===
164 (expr.computed ? "Literal" : "Identifier")
165 ) {
166 return new BasicEvaluatedExpression()
167 .setUndefined()
168 .setRange(expr.range);
169 }
170 });
171 };
172
173 normalModuleFactory.hooks.parser
174 .for("javascript/auto")
175 .tap("ImportMetaPlugin", parserHandler);
176 normalModuleFactory.hooks.parser
177 .for("javascript/esm")
178 .tap("ImportMetaPlugin", parserHandler);
179 }
180 );
181 }
182}
183
184module.exports = ImportMetaPlugin;
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