Less.js 插件对象

Less.js 插件应该导出具有一个或多个这些属性的对象。

{
    /* Called immediately after the plugin is 
     * first imported, only once. */
    install: function(less, pluginManager, functions) { },

    /* Called for each instance of your @plugin. */
    use: function(context) { },

    /* Called for each instance of your @plugin, 
     * when rules are being evaluated.
     * It's just later in the evaluation lifecycle */
    eval: function(context) { },

    /* Passes an arbitrary string to your plugin 
     * e.g. @plugin (args) "file";
     * This string is not parsed for you, 
     * so it can contain (almost) anything */
    setOptions: function(argumentString) { },

    /* Set a minimum Less compatibility string
     * You can also use an array, as in [3, 0] */
    minVersion: ['3.0'],

    /* Used for lessc only, to explain 
     * options in a Terminal */
    printUsage: function() { },

}

install() 函数的 PluginManager 实例提供了添加访问者、文件管理器和后处理器的方法。

这里有一些示例 repos，显示了不同的插件类型。