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Some schema libraries support two way conversion of data, often referred to as "encoding" and "decoding".

We benchmark the time taken to encode and decode a bigint to and from a string.

import * as z from "zod";

const bigIntFromString = z.codec(
  z.string(),
  z.bigint(),
  {
    decode: (str) => BigInt(str),
    encode: (bigint) =>
      bigint.toString(),
  },
);

bigIntFromString.encode(
  1234567890123456789n,
); // "1234567890123456789"
bigIntFromString.decode(
  "1234567890123456789",
); // 1234567890123456789n


import * as z from "zod";

const bigIntFromString = z.codec(z.string(), z.bigint(), {
  decode: (str) => BigInt(str),
  encode: (bigint) => bigint.toString(),
});

bigIntFromString.encode(1234567890123456789n); // "1234567890123456789"
bigIntFromString.decode("1234567890123456789"); // 1234567890123456789n
Invalid data

We don't benchmark codecs with invalid data, as many libraries require the input to be correctly typed before passing it to the codec.

Optimizations
LibraryVersion/wkOptimizationsEncodeDecode
sury11.0.0333.97KJIT70 ns
94 ns
io-ts2.2.221.94MNone70 ns
90 ns
zod/mini4.6.5209.22MJIT108 ns
118 ns
zod4.6.5209.22MJIT112 ns
124 ns
zod/mini (compile)4.6.5209.22MJIT115 ns
130 ns
zod (compile)4.6.5209.22MJIT126 ns
121 ns
effect3.22.224.53MNone256 ns
299 ns
effect (unknown)3.22.224.53MNone259 ns
302 ns
effect@rc4.0.0-rc.11224.53MNone277 ns
307 ns
effect@rc (unknown)4.0.0-rc.11224.53MNone279 ns
296 ns
typebox1.3.319.44MJIT3 μs
3 μs

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