Change ten foot squares maps in roll20 to 5 foot squares maps (path functions provided by Aaron)

10To5.js

on("ready", function() {
    
    var graphics;
    var paths;
    
    const scalePathString = function(pathstring,scale){
        return JSON.stringify(_.map(JSON.parse(pathstring),(n)=> _.map(n,(i)=> _.isNumber(i) ? scale*i : i )));
    };
    
    const simpleObject = function(o){
        return JSON.parse(JSON.stringify(o));
    };

    const  scaleDrawing = function(scale){
        
        return function(drawing){
            let newpath=_.omit(simpleObject(drawing),['_id','_type']);
            if(_.contains(['','[]'],newpath._path)){
                return;
            }
            newpath.path=scalePathString(newpath._path,scale);
            delete newpath._path;
            newpath.top*=scale;
            newpath.left*=scale;
            newpath.width*=scale;
            newpath.height*=scale;

            let newPathObj = createObj('path',newpath);
            drawing.remove();
        };
    };


    on("chat:message", function (msg) {
        if (msg.type === "api" && msg.content === "!10To5" && playerIsGM(msg.playerid))
        {
            var page = getObj('page', getObj('player',msg.playerid).get('lastpage'));
            page.set('width', page.get('width')*2);
            page.set('height', page.get('height')*2);
            page.set("scale_number", 5);
            page.set("snapping_increment", 1);
            graphics = findObjs({_type: 'graphic', _pageid: getObj('player',msg.playerid).get('lastpage')});
            paths = findObjs({_type: 'path', _pageid: getObj('player',msg.playerid).get('lastpage')});
            
            if (graphics)
            {
                for(var i=0; i<graphics.length; i++)
                {
                    graphics[i].set('top', graphics[i].get('top')*2);
                    graphics[i].set('left', graphics[i].get('left')*2);
                    graphics[i].set('width', graphics[i].get('width')*2);
                    graphics[i].set('height', graphics[i].get('height')*2);
                }
            }
            if (paths)
            {
                _.each(paths,scaleDrawing(2));
            }
        }
    });
});