WebAssembly

zig build -Dtarget=wasm32-wasi compiles the library, every example, and every tool clean — the runtime is portable Zig standard library only (verified against Zig 0.16.0's std per std.zig): std.mem allocators, std.atomic ordering, std.Io clocks/readers, and std.process argument handling all lower to WASI. The static library also compiles for wasm32-freestanding (hosted syscalls like process args aside).

Two upstream pieces deliberately have no counterpart here:

• wasm_store.c (loads compiled grammar blobs at runtime): unnecessary — grammars are native Zig table data linked into the binary, on every target including WASM itself.
• wasm-stdlib/* (C shims for scanners running inside WASM): unnecessary — external scanners are Zig functions with caller-owned payloads.

Validate locally:

zig build -Dtarget=wasm32-wasi        # library + tools compile
zig build -Dtarget=wasm32-wasi test   # test artifacts compile (host executes)

Related: Feature Matrix, Zig.