builder-webpack4/lib/util.js

webpack项目构建器.

'use strict';
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
var fs_1 = __importDefault(require("fs"));
var path_1 = __importDefault(require("path"));
var loader_utils_1 = __importDefault(require("loader-utils"));
var BuilderType;
(function (BuilderType) {
    BuilderType["dev"] = "dev";
    BuilderType["build"] = "build";
})(BuilderType = exports.BuilderType || (exports.BuilderType = {}));
exports.deepCopy = function (source) {
    var ret = {};
    for (var k in source) {
        ret[k] = typeof source[k] === 'object' ? exports.deepCopy(source[k]) : source[k];
    }
    return ret;
};
/**
 * 列出某个目录下的子目录, DFS算法
 * @param root         目录路径
 * @param level        列出的子目录层级
 * @param directories  默认为[]
 * @returns {*|Array}
 */
exports.listDir = function (root, level, directories) {
    directories = directories || [];
    if (!fs_1.default.existsSync(root)) {
        return directories;
    }
    if (fs_1.default.statSync(root).isDirectory() && level > 0) {
        fs_1.default.readdirSync(root)
            .forEach(function (name) {
            var dirPath = path_1.default.join(root, name);
            if (fs_1.default.statSync(dirPath).isDirectory()) {
                directories.push({
                    name: name,
                    dirPath: dirPath
                });
                exports.listDir(dirPath, level - 1, directories);
            }
        });
    }
    return directories;
};
/**
 * Merge 2个对象
 * @param obj1   Object
 * @param obj2   Object
 */
exports.merge = function (obj1, obj2) {
    return Object.assign({}, obj1, obj2);
};
var hasOwnProperty = Object.prototype.hasOwnProperty;
exports.isEmpty = function (obj) {
    if (obj == null)
        return true;
    if (obj.length > 0)
        return false;
    if (obj.length === 0)
        return true;
    if (typeof obj !== "object")
        return true;
    for (var key in obj) {
        if (hasOwnProperty.call(obj, key))
            return false;
    }
    return true;
};
/**
 * 用于css-loader转换类名：
 * 1.去除样式文件名的'.module'前缀；
 * 2.遇到以'index.module.xxx'命名的样式文件使用文件夹名代替文件名来组成转换后的类名。
 * 此方法基于'react-dev-utils/getCSSModuleLocalIdent'，增加less正则匹配（https://www.npmjs.com/package/react-dev-utils）
 * @param context webpack传给css-loader的context对象
 * @param localIdentName css-loader的options.localIdentName，没传默认是'[hash:base64]'，这里用不到
 * @param localName 原始css类名
 * @param options css-loader中三个配置项的组合，长这样：
   {
      regExp: options.localIdentRegExp,
      hashPrefix: options.hashPrefix || '',
      context: options.context,
   }
 */
exports.getCSSModulesLocalIdent = function (context, localIdentName, localName, options) {
    // Use the filename or folder name, based on some uses the index.js / index.module.(css|scss|sass) project style
    var fileNameOrFolder = context.resourcePath.match(/index\.module\.(css|scss|sass|less)$/ // 此处增加less，其余和原函数一致
    )
        ? '[folder]'
        : '[name]';
    // Create a hash based on a the file location and class name. Will be unique across a project, and close to globally unique.
    var hash = loader_utils_1.default.getHashDigest(path_1.default.posix.relative(context.rootContext, context.resourcePath) + localName, 'md5', 'base64', 5);
    // Use loaderUtils to find the file or folder name
    var className = loader_utils_1.default.interpolateName(context, fileNameOrFolder + '_' + localName + '__' + hash, options);
    // remove the .module that appears in every classname when based on the file.
    return className.replace('.module_', '_');
};
/**
 * 增加builder作为子进程时的通信能力
 * 目前有四条指令，分别对应build和dev时构建成功和失败的场景
 *
 */
exports.postMessage = {
    send: function (channel, data) {
        process && process.send && process.send(JSON.stringify({ type: channel, data: data }));
    },
    error: function (type, msg) {
        this.send("feflow:builder:" + type + ":error", msg);
    },
    success: function (type, msg) {
        this.send("feflow:builder:" + type + ":success", msg);
    }
};