javascript - Uncaught TypeError: v.setCanvasSize is not a function -

i beginner programmer, excuse me if solution 1 simple (although have looked hard finding already-posted solution). debugging code , error message when running program:

"uncaught typeerror: v.setcanvassize not function (in file1.js line 7)"

i assumed issue not yet having created setcanvassize function yet before doing stuff it. created timeout, doesn't seem either.

file1.js

v = new v3(v3);  settimeout (         function()         {         v.setcanvassize            ({             width:  500,             height: 300             },              function(result, err)              {             console.log(result);             }            );         },   1000 ); 

file2.js

v3 = typeof v3 === "undefined" ? {} : v3;  v3.file2 = function() {     this.setcanvassize = function(){}; };