67 lines
2 KiB
JavaScript
67 lines
2 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 RequireContextDependency = require("./RequireContextDependency");
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/** @typedef {import("../Dependency").DependencyLocation} DependencyLocation */
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/** @typedef {import("../javascript/JavascriptParser")} JavascriptParser */
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/** @typedef {import("../javascript/JavascriptParser").Range} Range */
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module.exports = class RequireContextDependencyParserPlugin {
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/**
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* @param {JavascriptParser} parser the parser
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* @returns {void}
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*/
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apply(parser) {
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parser.hooks.call
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.for("require.context")
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.tap("RequireContextDependencyParserPlugin", expr => {
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let regExp = /^\.\/.*$/;
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let recursive = true;
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let mode = "sync";
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switch (expr.arguments.length) {
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case 4: {
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const modeExpr = parser.evaluateExpression(expr.arguments[3]);
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if (!modeExpr.isString()) return;
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mode = /** @type {string} */ (modeExpr.string);
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}
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// falls through
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case 3: {
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const regExpExpr = parser.evaluateExpression(expr.arguments[2]);
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if (!regExpExpr.isRegExp()) return;
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regExp = /** @type {RegExp} */ (regExpExpr.regExp);
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}
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// falls through
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case 2: {
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const recursiveExpr = parser.evaluateExpression(expr.arguments[1]);
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if (!recursiveExpr.isBoolean()) return;
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recursive = /** @type {boolean} */ (recursiveExpr.bool);
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}
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// falls through
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case 1: {
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const requestExpr = parser.evaluateExpression(expr.arguments[0]);
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if (!requestExpr.isString()) return;
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const dep = new RequireContextDependency(
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{
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request: requestExpr.string,
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recursive,
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regExp,
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mode,
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category: "commonjs"
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},
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/** @type {Range} */ (expr.range)
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);
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dep.loc = /** @type {DependencyLocation} */ (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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});
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}
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};
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