优化

‘liusuyi’

2023-10-21 ae92b6823499cfab77201b4033922fa373fb37a3

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/*
    MIT License http://www.opensource.org/licenses/mit-license.php
    Author Tobias Koppers @sokra
*/
"use strict";
 
const path = require("path");
const concord = require("./concord");
const DescriptionFileUtils = require("./DescriptionFileUtils");
 
module.exports = class ConcordMainPlugin {
    constructor(source, options, target) {
        this.source = source;
        this.options = options;
        this.target = target;
    }
 
    apply(resolver) {
        const target = resolver.ensureHook(this.target);
        resolver
            .getHook(this.source)
            .tapAsync("ConcordMainPlugin", (request, resolveContext, callback) => {
                if (request.path !== request.descriptionFileRoot) return callback();
                const concordField = DescriptionFileUtils.getField(
                    request.descriptionFileData,
                    "concord"
                );
                if (!concordField) return callback();
                const mainModule = concord.getMain(request.context, concordField);
                if (!mainModule) return callback();
                const obj = Object.assign({}, request, {
                    request: mainModule
                });
                const filename = path.basename(request.descriptionFilePath);
                return resolver.doResolve(
                    target,
                    obj,
                    "use " + mainModule + " from " + filename,
                    resolveContext,
                    callback
                );
            });
    }
};