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If you're using a schema library, you can derive a jit-compiled deep equals function that's ~5-10 times faster than fast-deep-equal, and ~70-80x faster than Lodash (or any other recursive solution).

// also supported: JSON Schema, TypeBox, ArkType, valibot
import { deepEqual } from '@traversable/zod' 

const myEqualsFn = deepEqual(z.array(z.object({ name: z.string(), age: z.number() })))

myEqualsFn(
  [
    {'name': 'john', 'age': 22},
    {'name': 'mike', 'age': 20},
  ],
  [
    {'name': 'john', 'age': 22},
    {'name': 'mike', 'age': 42}
  ] 
) 
// => false

Run / play with the benchmarks here: https://bolt.new/~/mitata-k7dj9raq

This works because we're able to use the schema to optimize the comparison.

I wrote a short blog post that goes into more detail here: https://dev.to/ahrjarrett/how-i-built-javascripts-fastest-deep-equals-function-51n8

Edit: forgot to include a link, the library is here: https://github.com/traversable/schema/

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