error.txt

>> coffee nan.js.coffee 
Error: In nan.js.coffee, Parse error on line NaN: Unexpected 'MATH'
    at Object.parseError (/opt/hb/lib/node_modules/coffee-script/lib/parser.js:472:11)
    at Object.parse (/opt/hb/lib/node_modules/coffee-script/lib/parser.js:548:22)
    at /opt/hb/lib/node_modules/coffee-script/lib/coffee-script.js:29:22
    at Object.run (/opt/hb/lib/node_modules/coffee-script/lib/coffee-script.js:57:34)
    at /opt/hb/lib/node_modules/coffee-script/lib/command.js:147:29
    at /opt/hb/lib/node_modules/coffee-script/lib/command.js:115:26
    at [object Object].<anonymous> (fs.js:107:5)
    at [object Object].emit (events.js:61:17)
    at afterRead (fs.js:878:12)
    at wrapper (fs.js:245:17)

nan.js.coffee

d3.time.format("#{%m/%d}")

version.txt

>> coffee --version   
CoffeeScript version 1.1.2