JSON, fast-json-stringify, superjson benchmark

benchmark.js

// original: https://github.com/blitz-js/superjson/blob/main/benchmark.js
const Benchmark = require('benchmark');
const SuperJSON = require('./dist/').default;
const fastJson = require('fast-json-stringify');

const stringify = fastJson({
  type: 'object',
  required: ['a'],
  additionalProperties: false,
  properties: {
    a: {
      type: 'object',
      required: ['x', 'y', 'z'],
      additionalProperties: false,
      properties: {
        x: {
          type: 'string',
        },
        y: {
          type: 'number',
        },
        z: {
          type: 'object',
          required: ['arr'],
          additionalProperties: false,
          properties: {
            arr: {
              type: 'array',
              items: {
                type: 'string',
              },
            },
          },
        },
      },
    },
  },
});

const instances = {
  nested_json: {
    a: {
      x: 'v1huetoahuesoahu',
      y: 189898,
      z: { arr: ['a1111', 'b2222', 'c333'] },
    },
  },
};

const suite = new Benchmark.Suite('serialize & deserialize');

for (const [key, instance] of Object.entries(instances)) {
  suite.add('JSON.stringify:' + key, () => {
    JSON.parse(JSON.stringify(instance));
  });
  suite.add('fast-json-stringify:' + key, () => {
    JSON.parse(stringify(instance));
  });

  suite.add('superjson:' + key, () => {
    SuperJSON.deserialize(SuperJSON.serialize(instance));
  });
}

suite.on('cycle', event => {
  if (event.target.error) {
    console.error(event.target.error);
    process.exit(1);
  }
  console.log('' + event.target);
});

suite.run();

/*
JSON.stringify:nested_json x 494,214 ops/sec ±0.66% (92 runs sampled)
fast-json-stringify:nested_json x 708,988 ops/sec ±0.87% (94 runs sampled)
superjson:nested_json x 91,521 ops/sec ±1.22% (92 runs sampled)
*/