Reading default values from a schema

[ravinggenius]

I'm building a search form, and the schema for it is defined as the following:

const RAW_SEACH_QUERY = z.object({
	q: z.string().optional().default("").catch(""),
	o: z.coerce.number().nonnegative().int().optional().default(0).catch(0),
	l: z.coerce
		.number()
		.nonnegative()
		.int()
		.max(MAX_PAGE_SIZE)
		.optional()
		.default(DEFAULT_PAGE_SIZE)
		.catch(DEFAULT_PAGE_SIZE),
	e: z.coerce
		.boolean()
		.optional()
		.default(DEFAULT_EXPAND_VERSIONS)
		.catch(DEFAULT_EXPAND_VERSIONS),
	v: z.enum(["list", "table"]).optional().default("list").catch("list")
});

This is further processed with .transform() step, but that's not relevant to my question. I'd really like access to the default values and the catch fallback values too. I tried the following, but it doesn't work:

RAW_SEACH_QUERY.shape.q.defaultValue();

I would expect something like .defaultValue() (and .catchFallback()) to be available. I asked ChatGPT. It suggested RAW_SEACH_QUERY.shape.q._def.defaultValue(), but .defaultValue() isn't defined. Worse I assume _def isn't part of the public API, so using it is likely not supported.

Is there a (supported) way to access the default values that I'm just missing?