[Startup Engineering] HW3: Error occurs at Sample Usage

When you try to 3rd command : $ ./grader.js –checks checks.json –file index.html, error can occur.

then, check the node.js version.

[sourcecode] $ node –version[/sourcecode]

If the version of node is 0.6.x, you need update the version of node.js to table version.

[sourcecode language=”bash”]<br />$sudo npm cache clean -f<br />$sudo npm install -g n<br />$sudo n stable<br />[/sourcecode]

(#ref:http://davidwalsh.name/upgrade-nodejs)

I resolved this error with updating v0.10.13