CSE Machine: array flips when function called twice

[alsonleej]

const f = x => [1,2,3];
f(f(1));

produces [3,2,1] instead of [1,2,3].

[martin-henz]

Ha, that's a good catch! The perils of imperative programming! The handling of array literals in cse-machine/interpreter.ts destructively reverses the array in the syntax tree. So next time the array literal gets evaluated, its elements appear in reversed order!