Replace the lookahead-based pattern with separate allOf/not JSON Schema rules for quartet length, alphabet, padding and canonical pad bits. Share the runtime predicates with HAR and padded base64 parsing.
Validate converted advertised leaves with the MCP SDK validator, preserve permissive versus canonical semantics, and exercise every pattern near the 32 MiB encoded-input budget in all JavaScript modes.
Share padded decoding across CDP response shapes and cache fingerprints,
and count binary WebSocket bytes without allocating a decoded buffer.
Preserve HAR canonical pad bits and validate before allocation.
Replace repeated alphabet quartets in canonical schemas with separate
alphabet, padding and fixed-width length assertions. Cover near-32MiB
encodings under ordinary, Unicode and Unicode-set modes, plus complete
4MiB CLI and MCP retained-evidence export workflows.
Fixes#5253
* refactor(schemas): share identifier and canonical base64 patterns
* test: hold the offset datetime schema to the validator it replaces
The module documents that its accepted set matches z.string().datetime({ offset: true }), and nothing in the suite checked that claim. Adds table-driven accept and reject cases (leap years including the 1900/2000 century pair, month, day, hour and offset ranges, fractional and omitted seconds, missing offset, basic format) plus a differential assertion that classifies every case exactly as the replaced validator does, and asserts the emitted pattern compiles under u and v while the replaced pattern does not compile under v.
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Co-authored-by: felipeatp <felipe.troncosopt@gmail.com>
morluto