Bigint with coerce throws exception in safeParse and safeParseAsync

[aleksess]

Hi,

I noticed a bug while using safeParse and safeParseAsync. Those methods IMO shouldn't throw any errors. Instead, they should hold error in returned object. However, currently this does not work in case of coerced big integers.

Here's an example snippet:

const { z } = require("zod");
const schema = z.object({
  data: z.coerce.bigint(),
});
const example = { data: undefined };
try {
  const result = schema.safeParse(example);
  console.log("RESULT ok?: ", result.success);
} catch (err) {
  console.error("Catched: ", err);
}

Excepted output
RESULT ok?: false

Actual output

Catched:  TypeError: Cannot convert undefined to a BigInt
    at BigInt (<anonymous>)
    at ZodBigInt._parse (/home/aleksander/projects/zod-bigint-error/node_modules/zod/lib/types.js:1205:26)
    at ZodObject._parse (/home/aleksander/projects/zod-bigint-error/node_modules/zod/lib/types.js:1864:37)
    at ZodObject._parseSync (/home/aleksander/projects/zod-bigint-error/node_modules/zod/lib/types.js:146:29)
    at ZodObject.safeParse (/home/aleksander/projects/zod-bigint-error/node_modules/zod/lib/types.js:176:29)
    at Object.<anonymous> (/home/aleksander/projects/zod-bigint-error/index.js:10:25)
    at Module._compile (node:internal/modules/cjs/loader:1469:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1548:10)
    at Module.load (node:internal/modules/cjs/loader:1288:32)
    at Module._load (node:internal/modules/cjs/loader:1104:12)