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/*
* Ensure Error .fileName, .lineNumber, and .stack are not directly writable,
* but can be written using Object.defineProperty(). This matches Duktape
* 1.3.0 and prior.
*
* See: https://github.com/svaarala/duktape/pull/390.
*/
(function () {
var err = new Error('test');
err.fileName = 999;
if (err.fileName !== 999) { return; } // already non-writable
var fn = new Function(''); // nop
Object.defineProperties(Error.prototype, {
fileName: { set: fn },
lineNumber: { set: fn },
stack: { set: fn }
});
})();