Compare Zod schemas for equality

README.md

This is a naive way of comparing two Zod schemas to see if they are equivalent. Basically, it works by serializing the two schemas and comparing the resulting strings. This approach is limited because serialization doesn't capture all of the information about certain Zod types, e.g. functions.

index.js

const zod = require("zod");

const a = zod.object({
  status: zod.enum([
    "success",
    "failure",
  ]),
  response: zod.string(),
});

const b = zod.object({
  status: zod.enum([
    "success",
    "failure",
  ]),
  response: zod.string(),
});

const c = zod.object({
  status: zod.enum([
    "success",
  ]),
  response: zod.string(),
});

const compareSchemas = (schema1, schema2) => {
  return JSON.stringify(schema1.shape) === JSON.stringify(schema2.shape);
};

compareSchemas(a, b); // true
compareSchemas(a, c); // false