try with exec sh

node_modules/performance-now/test/scripts/delayed-require.coffee

@@ -0,0 +1,12 @@
+#!/usr/bin/env ./node_modules/.bin/coffee
+
+###
+Expected output is a number above 350 and below 600.
+The time reported is relative to the time the node.js process was started
+this is approximately at `(Date.now() process.uptime() * 1000)`
+###
+
+delay = require "call-delayed"
+delay 250, ->
+  now = require "../../lib/performance-now"
+  console.log now().toFixed 3