fix(workers-utils): reject null observability config instead of crashing#14746
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NuroDev merged 1 commit intoJul 20, 2026
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validateObservability only guarded against undefined, so a null value (valid in JSON/JSONC config) passed the typeof === "object" check and then threw a TypeError while reading val.enabled. Reject null with the same diagnostic the sibling cache validator already emits, and add a regression test. Signed-off-by: Sam Agarwal <samarthagrawal526@gmail.com>
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@cloudflare/autoconfig
@cloudflare/config
create-cloudflare
@cloudflare/deploy-helpers
@cloudflare/kv-asset-handler
miniflare
@cloudflare/pages-shared
@cloudflare/unenv-preset
@cloudflare/vite-plugin
@cloudflare/vitest-pool-workers
@cloudflare/workers-auth
@cloudflare/workers-editor-shared
@cloudflare/workers-utils
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There's no existing issue for this; it's a small validation bug found while reading the config validators.
validateObservabilityguards only againstundefined:Because
typeof null === "object", anullvalue falls through this check. The function then readsval.enabled, which throws:nullis reachable through real config, since Wrangler accepts JSON/JSONC where"observability": nullis valid. Instead of a clean diagnostic, the user gets a stack trace.The sibling
validateCachevalidator already handles this correctly:This change brings
validateObservabilityin line with it, soobservability: nullnow produces:which matches how every other object-typed field (
browser,durable_objects,cache, ...) already reports anullvalue.The added test fails on the current code with the
TypeErrorabove and passes with the fix. Verified withpnpm test -F @cloudflare/workers-utils(431 passed), plusoxlintandoxfmtclean.