examples/intro/no_var_strict.js
"use strict";

colour = "green";
console.log(colour);  // green
paint_house();
console.log(colour);  // green

// There are lots of lines of code here.
// So many lines that the next part is on another page:

function paint_house() {
    color = "blue";
}
examples/intro/no_var_strict.txt
/../examples/intro/no_var_strict.js:3
colour = "green";
       ^
ReferenceError: colour is not defined
    at Object.<anonymous> (/../examples/intro/no_var_strict.js:3:8)
    at Module._compile (module.js:460:26)
    at Object.Module._extensions..js (module.js:478:10)
    at Module.load (module.js:355:32)
    at Function.Module._load (module.js:310:12)
    at Function.Module.runMain (module.js:501:10)
    at startup (node.js:129:16)
    at node.js:814:3
[Finished in 0.088s]