/
ImportMetaContextDependencyParserPlugin.js
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/
ImportMetaContextDependencyParserPlugin.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Ivan Kopeykin @vankop
*/
"use strict";
const {
evaluateToIdentifier
} = require("../javascript/JavascriptParserHelpers");
const ImportMetaContextDependency = require("./ImportMetaContextDependency");
/** @typedef {import("estree").Expression} ExpressionNode */
/** @typedef {import("estree").ObjectExpression} ObjectExpressionNode */
/** @typedef {import("../javascript/JavascriptParser")} JavascriptParser */
/**
* @param {JavascriptParser} parser parser
* @param {ObjectExpressionNode} optionsNode node
* @returns {{mode: string, recursive: boolean, regExp: RegExp}} options
*/
function getOptions(parser, optionsNode) {
let regExp = /^\.\/.*$/;
let recursive = true;
let mode = "sync";
if (optionsNode) {
for (const prop of optionsNode.properties) {
if (prop.type !== "Property" || prop.key.type !== "Identifier") return;
switch (prop.key.name) {
case "regExp": {
const regExpExpr = parser.evaluateExpression(
/** @type {ExpressionNode} */ (prop.value)
);
if (!regExpExpr.isRegExp()) return;
regExp = regExpExpr.regExp;
break;
}
case "mode": {
const modeExpr = parser.evaluateExpression(
/** @type {ExpressionNode} */ (prop.value)
);
if (!modeExpr.isString()) return;
mode = modeExpr.string;
break;
}
case "recursive": {
const recursiveExpr = parser.evaluateExpression(
/** @type {ExpressionNode} */ (prop.value)
);
if (!recursiveExpr.isBoolean()) return;
recursive = recursiveExpr.bool;
}
}
}
}
return { recursive, regExp, mode };
}
module.exports = class ImportMetaContextDependencyParserPlugin {
apply(parser) {
parser.hooks.evaluateIdentifier
.for("import.meta.webpackContext")
.tap("HotModuleReplacementPlugin", expr => {
return evaluateToIdentifier(
"import.meta.webpackContext",
"import.meta",
() => ["webpackContext"],
true
)(expr);
});
parser.hooks.call
.for("import.meta.webpackContext")
.tap("ImportMetaContextDependencyParserPlugin", expr => {
if (expr.arguments.length < 1 || expr.arguments.length > 2) return;
const [directoryNode, optionsNode] = expr.arguments;
if (optionsNode && optionsNode.type !== "ObjectExpression") return;
const requestExpr = parser.evaluateExpression(directoryNode);
if (!requestExpr.isString()) return;
const request = requestExpr.string;
const options = getOptions(parser, optionsNode);
if (!options) return;
const dep = new ImportMetaContextDependency(
{
request,
...options,
category: "esm"
},
expr.range
);
dep.loc = expr.loc;
dep.optional = !!parser.scope.inTry;
parser.state.current.addDependency(dep);
return true;
});
}
};