v4.5.3

Released: 2026-10-16

Bug Fixes

compile keeps the authored whitespace of multiline MDX expressions. Template literals and other string payloads in attributes, spreads, flow/text expressions, and nested JSX no longer lose meaningful indentation, tabs, or blank lines. This is the same fix as in the @takazudo/zfb engine. parseToAst output is unchanged (3a9eb1d3).
compile no longer rejects a valid template string that contains a decimal comparison, such as <Preview js={`x<1.5`} />. Before, it returned code: null with Unexpected numeric literal. This is the same fix as in the @takazudo/zfb engine (ca85c800).

Plain Markdown inputs skip a redundant frontmatter dispatch (d8295446).
highlightCode avoids re-sorting theme names that are already ordered (95109f60).
Shipped sizes (CI-measured at v4.5.3, gzip-9): root (.) 1,521,731 B, ./highlight 821,788 B, ./render 1,098,982 B, ./parse 285,309 B. All four are inside their ceilings. The documented size tables were reconciled with these hosted production measurements (3d53b57a). All four .wasm artifacts embed ZFB_RELEASE_VERSION, so all four SHA-256 digests change in v4.5.3 whether or not an artifact's byte size moved. Re-verify pinned digests against @takazudo/zfb-md-wasm/shipped-artifacts.json or the zfb-md-wasm-4.5.3-shipped-artifacts.json Release asset.