Object.freeze breaks toEqual

[JonathanMEdwards]

Describe the bug

Object.freeze causes toEqual to trap because it is trying to mutate my data. This only happens when it actually finds a difference.

Reproduction

import { expect, test } from 'vitest'
test('vitest trap', () => {
const x = {a: { b: { c: 1 }}}
const y = {a: { b: { c: 2 }}}
Object.freeze(x.a);
expect(x).toEqual(y);
})

Throws the error:
TypeError: Cannot assign to read only property 'b' of object '#'

System Info

System:
    OS: macOS 14.0
    CPU: (10) arm64 Apple M1 Pro
    Memory: 2.24 GB / 16.00 GB
    Shell: 3.3.1 - /usr/local/bin/fish
  Binaries:
    Node: 20.8.0 - /usr/local/bin/node
    npm: 10.1.0 - /usr/local/bin/npm
  Browsers:
    Brave Browser: 87.1.18.78
    Chrome: 117.0.5938.149
    Safari: 17.0
  npmPackages:
    @vitejs/plugin-react-swc: ^3.4.0 => 3.4.0
    vite: ^4.4.9 => 4.4.9
    vitest: ^0.34.6 => 0.34.6

Used Package Manager

npm

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