ES6 tests throw TypeError

[krohne]

http://jsperf.com/swap-two-numbers-without-tmp-var/19

Array Destructuring (ES6) [a, b] = [b, a];

Chrome and Firefox can run the ES6 code in the console, but jsperf.com throws an error.

Firefox:

TypeError: P(...)[0] is undefined.

message: TypeError: P(...)[0] is undefined fileName: http://jsperf.com/benchmark-47.js lineNumber: 21

Chrome:

Uncaught TypeError: Cannot read property 'name' of undefined.

message: Uncaught TypeError: Cannot read property 'name' of undefined fileName: http://jsperf.com/benchmark-47.js lineNumber: 21

[jdalton]

Dup of https://github.com/jsperf/jsperf.com/issues/66.