Whitespace parser quirks

[berekuk]

1. x = [[5]]; x[0] [0] is allowed, but x = [[5]]; x [0][0] is not.
2. x = {foo: 5}; x .foo is not allowed.

JS allows all of these.

[berekuk]

If we allow new lines, this creates an unfortunate uncertainty:

arr = [3,4,5]
x = arr
[0]

This could be interpreted in two different ways.

Less of a problem with .foo, because it's not a valid expression.