Rework lib/internal/webidl.js into a documented shared converter module
that follows the Web IDL conversion algorithms more closely.
Improvements:
- Add documented converters and helper factories for primitive values,
dictionaries, enums, sequences, interfaces, required arguments,
integers, `Uint8Array`, and `BufferSource`.
- Move WebCrypto onto the shared converters, while keeping compatibility
wrappers for its existing `BufferSource` and `BigInteger` behavior.
- Use shared converters from Blob, Performance, Web Locks, and
structured clone option handling.
- Add benchmarks for `ConvertToInt` and WebCrypto Web IDL converter hot
paths.
- Add focused tests for core converters, WebCrypto converters, integer
conversion, and buffer source behavior.
Fixes:
- Make the shared `BufferSource` and `Uint8Array` converters reject
resizable `ArrayBuffer` and growable `SharedArrayBuffer` backing
stores unless explicitly allowed. WebCrypto preserves its legacy
resizable backing-store behavior through compatibility wrappers until
a semver-major follow-up can opt in to the stricter behavior.
- Use Web IDL `ToNumber` and `ToString` behavior for BigInt, Symbol, and
object primitive conversion.
- Use exact BigInt modulo for 64-bit `ConvertToInt` wrapping and
document the final Number approximation behavior.
- Normalize mathematical modulo results to `+0` where Web IDL requires
it.
- Process inherited dictionaries in least-derived to most-derived order,
sorting members only within each dictionary level.
- Use `IteratorComplete` truthiness for sequence conversion.
- Cover detached buffers, resizable-backed views, growable-backed views,
cross-realm buffer sources, mutation-after-call behavior, inherited
dictionary member order, and sequence iterator completion behavior.
Signed-off-by: Filip Skokan <panva.ip@gmail.com>
PR-URL: https://github.com/nodejs/node/pull/62979
Reviewed-By: Сковорода Никита Андреевич <chalkerx@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
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