Creating an Error and assigning to the column property breaks on the latest mobile and desktop Safari. Removing "use strict" in esprima is a workaround, but seems like not the ideal solution.

Relevant line:
https://github.com/jquery/esprima/blob/master/esprima.js#L2395

Test case:

(function () { "use strict"; var e = new Error(); e.column = 1; })();

--> TypeError: Attempted to assign to readonly property.

The effect is that esprima.parse on invalid code throws the above TypeError rather than the expected SyntaxError in Safari.