Run results for: simpleStringify vs JSON.stringify

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:75.0) Gecko/20100101 Firefox/75.0

Browser: Firefox 75

Operating system: Mac OS X 10.14

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
simpleStringify	1456864.9 Ops/sec
JSON.stringify	5074042.5 Ops/sec

Script Preparation code:

function simpleStringify(o) {
  let cache = [];
  let data = JSON.stringify(o, function(key, value) {
    if (typeof value === "object" && value !== null) {
      if (cache.indexOf(value) !== -1) {
        // Circular reference found, discard key
        return;
      }
      // Store value in our collection
      cache.push(value);
    }
    return value;
  });
  cache = null;
  return data;
}
var testData = {"bar":"foo"}

Tests:

simpleStringify
simpleStringify(testData);
JSON.stringify
JSON.stringify(testData)