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Lazarus resurrects legacy JavaScript. Results are empirical evidence, not mathematical proof.

Query string parser (jQuery era, ES5)

SampleES5 / jQueryResurrected

Created 2026-11-07

Legacy source

function parseQueryString(query) {
var result = {};
var text = query;
if (text.charAt(0) == '?') {
text = text.substring(1);
}
if (text == '') {
return result;
}
var pairs = text.split('&');
for (var i = 0; i < pairs.length; i++) {
if (pairs[i] == '') {
continue;
}
var separator = pairs[i].indexOf('=');
var rawKey = separator < 0 ? pairs[i] : pairs[i].substring(0, separator);
var rawValue = separator < 0 ? '' : pairs[i].substring(separator + 1);
var key = decodeURIComponent(rawKey.replace(/\+/g, ' '));
var value = decodeURIComponent(rawValue.replace(/\+/g, ' '));
if (Object.prototype.hasOwnProperty.call(result, key)) {
if (Object.prototype.toString.call(result[key]) == '[object Array]') {
result[key].push(value);
} else {
result[key] = [result[key], value];
}
} else {
result[key] = value;
}
}
return result;
}

Stored curses

4 curses stored for this corpse.

Implicit coercionHEXline 5
Var hoistingHEXline 17
Implicit coercionHEXline 24
Prototype pollution

Next stages

These stages arrive in a later release.

Hex Scanner
Deterministic curse diagnostics.
Coming soon
Séance Chamber
Extraction of the logic into specs.
Coming soon
Laboratory
Reincarnation and property-based proof of life.
Coming soon

FATAL

line 30