when I'm not using eval than anything have solution?

question

var fn = {};
fn.listPlugins = function(cb){
	if (!Array.isArray(this.plugins)) {
		$.getJSON('/plugins/list.json',(json, textStatus) => {
			if (textStatus == "success") {
				this.plugins = json;
				if (typeof cb == "function") {
					cb(json);
				}
				else{
					return json;
				}		
			}
		});
	}
	else{
		if (typeof cb == "function") {
			cb(this.plugins);
		}
		else{
			return this.plugins;
		}
	}
}
fn.getPlugins = function(name,filePath){
    if(Array.isArray(name) && filePath === undefined){
        this.listPlugins((plugins)=>{
            for(var k of name){
                this.getPlugins(k,plugins[k].path);
                console.log(k,plugins[k].path)
            }
        })
    }
    else{
        $.getScript(filePath, (data, textStatus) => {
            if(textStatus == "success")
            {
                this[name] = eval(data);
            }
        });
    }
}
//list.json
{
	"Draw":{
		"path" : "/plugins/Draw.js",
		"description" : "test"
	},
	"Math":{
		"path" : "/plugins/Math.js",
		"description" : "test"
	}
}