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graphrefly_core

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Synchronous SHA-256 hashing.

GraphReFly’s public substrate exposes sha256Hex (cache-key / content-addressing helper used by versioning, snapshot paths, and the presentation-layer adapters). The TS reference impl is async only because crypto.subtle.digest returns a Promise — there is nothing intrinsically async about SHA-256.

Per the Rust-port invariant “No async runtime in Core” (CLAUDE.md invariant 4 / D070 / D077), the hashing itself stays fully synchronous here. The async-everywhere wrapping demanded by the Impl parity contract is applied only at the napi boundary (graphrefly-bindings-js), never in this crate.

@module

Functions§

sha256_hex
Hex-encode the SHA-256 digest of bytes. Pure, synchronous, no allocation beyond the 64-char output String. Mirrors the TS sha256Hex byte semantics: the caller is responsible for encoding a string input to UTF-8 bytes before calling (the napi boundary does this).