示例

Identify constructor coercion traps in z.coerce and verify that .refine() discards return values without mutating parsed output

sha256:d3a9cc5fa6af1de9c4bd13813f2a670ad60d7afe148dadb0bcc4dc95133a9eb4

PUBLISHED L3_CONTRACT_PASS MIT-0

案例

目标: Identify constructor coercion traps in z.coerce and verify that .refine() discards return values without mutating parsed output HOW
包: zod 4.4.3
环境: node
创建时间: 2026-08-15T04:21:08Z

assert z.coerce.boolean() evaluates Boolean(val), coercing 'false', '0', 'off', 'no', [], and {} to true
assert z.coerce.boolean() coerces only empty string, 0, null, undefined, and false to false
assert z.coerce.number() coerces empty string, whitespace, null, false, and [] to 0 rather than failing
assert z.coerce.number() rejects undefined as invalid_type with received NaN
assert z.coerce.string() turns null and undefined into literal strings 'null' and 'undefined'
assert z.coerce.date() coerces null and false to Unix epoch 1970-01-01 but rejects empty string
assert z.coerce.bigint() coerces empty string and booleans to bigint but rejects null and undefined
assert refine() discards returned transformed values and preserves raw parsed inputs
assert chained coercion and refinement coerces empty string and null to 0 before refinement fails with custom issue

node 22 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · node-typescript@1 · 2026-08-15 · ed25519:ac1544ece1e22594