JavaScript + C Preprocessor

command line

/usr/bin/cpp -P -undef -Wundef -std=c99 -nostdinc -Wtrigraphs -fdollars-in-identifiers -C < foo.js

foo.js

#define IN(ms) setTimeout(function() { setTimeout(___in_x, ms); }, 0); var ___in_x = function()

#include "other.js"
#define FOO "bar"


/* Killing Continuous-passing-style */
function foo() {
    IN(100) {
        console.log(FOO);
    }
}

foo();