angular-es6-interop-loader.js

/*
    Usage:
    
    1. Place loader in a webpack loader directory
    2. Add the following to webpack loader configuration:
    
       { test: /\.js/, loader: 'angular-es6-interop', exclude: /node_modules|jquery|angular(\.min)?\.js|\.build/}
*/

function findAll(regex, string, unique) {

    regex = new RegExp(regex, 'g');

    var matches = [];

    while(true) {
        var match = regex.exec(string);

        if (!match)
            break;
        if (typeof match[1] !== 'undefined')
            matches.push(match[1]);
        else if (typeof match[0] !== 'undefined')
            matches.push(match[0]);
        else
            break;
    }

    return matches;
}

function exportProviders(angular) {
    angular && angular.exportProviders(module, exports, __dirname, __filename);
}

module.exports = function (content) {
    this.cacheable && this.cacheable();

    var registersAngularProviders = content.match(/\.(factory|service|provider|constant)\(/);
    var registersES6Exports = content.match(/export (var|function|constant|class) \$\w+/);

    if (registersAngularProviders && registersES6Exports) {
        throw new Error('Can not register ES6 exports and angular providers in the same module. If in doubt, use ES6 exports and angular-es6-interop will auto-generate angular providers for you.');
    }

    if (registersAngularProviders && content.indexOf('angular.mock') === -1) {
        return content.replace(/([,;]\s+)?(?:return\s+)?((var\s+\w+\s+=\s+)?(\w+\.)?module\()/g, '$1\n\n\n(' + exportProviders.toString() + ')(window.angular);\n\n\n$2');
    }

    if (registersES6Exports) {
        var exp = findAll('export (?:var|function|constant|class) (\\$\\w+)', content);

        return content + '\nangular.module()\n' + exp.map(function(providerName) {
                return '.value("' + providerName + '", ' + providerName + ')';
            }).join('') + ';';
    }

    return content;
};