Uglify sourcemap test

in.js

"use strict";

var _window$foo = window.foo,
    a = _window$foo[0],
    b = _window$foo[1];
//# sourceMappingURL=data:application/json;charset=utf8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbImluLmpzIl0sIm5hbWVzIjpbIndpbmRvdyIsImZvbyIsImEiLCJiIl0sIm1hcHBpbmdzIjoiOztrQkFBYUEsTUFBTSxDQUFDQyxHO0lBQWZDLEM7SUFBR0MsQyIsImZpbGUiOiJpbi5qcyIsInNvdXJjZXNDb250ZW50IjpbImxldCBbYSwgYl0gPSB3aW5kb3cuZm9vO1xuIl19

original input.js

let [a, b] = window.foo;

out.bad.js

"use strict";var _window$foo=window.foo,a=_window$foo[0],b=_window$foo[1];
//# sourceMappingURL=data:application/json;charset=utf-8;base64,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

out.good.js

"use strict";var _window$foo=window.foo,a=_window$foo[0],b=_window$foo[1];
//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbImluLmpzIl0sInNvdXJjZXNDb250ZW50IjpbImxldCBbYSwgYl0gPSB3aW5kb3cuZm9vO1xuIl0sIm5hbWVzIjpbIndpbmRvdyIsImZvbyIsImEiLCJiIl0sIm1hcHBpbmdzIjoiNkJBQWFBLE9BQU9DLElBQWZDLEUsZUFBR0MsRSJ9