在forge.config.js文件中使用postPackage钩子，例如：

{
    hooks: {
        postPackage: async (forgeConfig, options) => {
            console.info('postPackage() Packages built at:', options.outputPaths);
            if (!(options.outputPaths instanceof Array)) {
                return;
            }
            const packageDotJson = path.join(options.outputPaths[0], 'resources', 'app', 'package.json');
            const content = fs.readFileSync(packageDotJson);
            const json = JSON.parse(content.toString());
            Object.keys(json).forEach((key) => {
                switch (key) {
                    case 'name': {
                        break;
                    }
                    case 'version': {
                        break;
                    }
                    case 'main': {
                        break;
                    }
                    case 'author': {
                        break;
                    }
                    case 'description': {
                        break;
                    }
                    default: {
                        delete json[key];
                        break;
                    }
                }
            });
            fs.writeFileSync(packageDotJson, JSON.stringify(json, null, '\t'));
        },
    }
}