mpx-webpack-plugin/lib/loaders/MPXFileLoader.js

原生小程序开发套装(Mini Program X) -------------------------------

const getRelativePath = require("../utils/getRelativePath");
const LoaderUtils = require("loader-utils");
const stringify = require("../utils/stringify");
const getInterpolateExtname = require("../utils/getInterpolateExtname");
const getTopName = require("../utils/getTopName");
const path = require("path");
const { WECHAT } = require("../platforms");

function interpolateName( context, platform, name, options ) {
    return LoaderUtils.interpolateName(context, name, options)
        .replace(/\[topname\]/ig, () => getTopName(context.resourcePath))
        .replace(/\[(?:ext\:([a-z]*))\]/ig, ( match, extname ) => getInterpolateExtname(extname, platform));
}

module.exports = function( content ) {
    const options = LoaderUtils.getOptions(this) || {};
    const context = options.context || this.rootContext || (this.options && this.options.context);
    const getOutputPath = options.getOutputPath || getRelativePath;
    const outputNodeModules = options.outputNodeModules || "node_modules";
    const platform = options.platform || this.platform || WECHAT;
    
    const filename = interpolateName(this, platform, options.name, { context, content, regExp: options.regExp });
    const dirname  = path.posix.dirname(getOutputPath(this.resourcePath, context, outputNodeModules));
    const output   = path.posix.join(dirname, filename);
    
    /// 写入文件。
    if ( options.emitFile || options.emitFile === void 0 ) {
        this.emitFile(output, content);
    }
    
    /// 导出引用路径。
    let exported = null;
    
    if ( options.exportRelativePath ) { // 导致相对文件位置。
        exported = path.posix.relative(this._module.issuer.context, this.resourcePath);
        exported = path.posix.join(path.posix.dirname(exported), filename);
        exported = stringify(LoaderUtils.urlToRequest(exported));
    }
    
    else if ( options.publicPath ) {
        if ( options.publicPath.endsWith("/") ) {
            exported = options.publicPath + output;   
        }
        
        else {
            exported = options.publicPath + "/" + output;
        }
        
        exported = stringify(exported);
    }
    
    else {
        exported = `__webpack_public_path__ + ${stringify(output)}`;
    }
    
    return `module.exports = ${exported};`;
}

module.exports.raw = true;