#operators

compiles:
if(side == 1) letter .= toLowerCase()

to:
if(side == 1) letter = letter.toLowerCase()

compiles:
x(function() {
  this.y ||= this.x = new A
})

to:
x(function() {
  this.y = this.y || this.x = new A
})

compiles:

x ||= 5

to:

x = x || 5

compiles:

x[1] ||= x*[1,2]

to:

x[1] = x[1] || x*[1,2]


compiles:

x .= length

to:

x = x.length

compiles:

x(1).hello[1] .= toUpperCase()

to:

x(1).hello[1] = x(1).hello[1].toUpperCase()

compiles:
c = a <- b
to:
c = __merge(a, b)

function __merge(a,b) {
  b = b || {};
  for(var k in b) a[k] = b[k];
  return a;
}
compiles:
a <- b
to: 
__merge(a, b)

function __merge(a,b) {
  b = b || {};
  for(var k in b) a[k] = b[k];
  return a;
}

compiles:
a <- b
z = a*z[123] <- b.options().z
to:
__merge(a, b)
z = __merge(a*z[123], b.options().z)

function __merge(a,b) {
  b = b || {};
  for(var k in b) a[k] = b[k];
  return a;
}

compiles: 

a <- (b <- c) 
to:
__merge(a, (__merge(b, c)))

function __merge(a,b) {
  b = b || {};
  for(var k in b) a[k] = b[k];
  return a;
}