Unable to create integer map keys

[ehynds]

Integer map keys cause the following error to be thrown:

/usr/local/lib/node/.npm/yaml/0.2.1/package/lib/yaml.js:174
throw new Error(msg + ', ' + context(this.peek()[1].input))
^
Error: hash not properly dedented, near ": foo\n 4: bar\n"
at Parser.expect (/usr/local/lib/node/.npm/yaml/0.2.1/package/lib/yaml.js:174:9)
at Parser.parseHash (/usr/local/lib/node/.npm/yaml/0.2.1/package/lib/yaml.js:275:12)
at Parser.parse (/usr/local/lib/node/.npm/yaml/0.2.1/package/lib/yaml.js:234:19)
at Object.eval (/usr/local/lib/node/.npm/yaml/0.2.1/package/lib/yaml.js:375:46)
at /home/ehynds/public_html/js-support.org/app.js:7:21
at [object Object]. (fs.js:107:5)
at [object Object].emit (events.js:61:17)
at afterRead (fs.js:970:12)
at wrapper (fs.js:245:17)

See http://gyazo.com/583e23e949d45290837b52d95aa8205f.png