Validation Methods

// Throws if validation fails
try {
  const validated = schema.parse(input);
} catch (err) {
  // Handle ZodError
  console.error(err.errors);
}

// Returns result object instead of throwing
const result = schema.safeParse(input);
if (result.success) {
  const data = result.data;
} else {
  const error = result.error;
}

// For async validation/transforms
const result = await schema.parseAsync(input);

// Async version of safeParse
const result = await schema.safeParseAsync(input);

schema.parse(input, {
  context: {
    userId: '123',
    isAdmin: false
  }
});

const schema = z.object({
  id: z.string()
}).refine((data, ctx) => {
  return ctx.isAdmin || data.id === ctx.userId;
}, {
  message: "Can only access your own data"
});

z.string({
  required_error: "Name is required",
  invalid_type_error: "Name must be a string"
}).min(5, {
  message: "Name must be at least 5 characters"
});

const error = result.error;
const formatted = error.format();
// {
//   _errors: [],
//   fieldName: {
//     _errors: ["Invalid value"]
//   }
// }

const partialSchema = schema.partial();
// All fields become optional

const deepPartial = schema.deepPartial();
// Recursively makes all fields optional

const strictSchema = schema.strict();
// Rejects unknown fields

const stripped = schema.strip();
// Removes unknown fields