svelte-engine

Bootstrap libwasm wasm-eh SPA + vibe.0 host that svelte-d drops into svelte-engine-ws. <script lang="d"> prints onto src-d/; +page.server.d prints onto webserver/. Consumers never clone this next to a riscv-dev tree — bun add github:etcimon/svelte-d ships a packaged copy, and bunx svelte-d drop-ws overlays it onto the project dest.

• Notes: architecture/README.md
• <script lang="d"> contract: architecture/script-lang-d.md
• Guider: AGENTS.md

WASM (default = LDC 1.43 / wasm-eh)

From a dropped workspace, or this tree after bunx svelte-d setup:

bunx svelte-d wasm --ws .            # release + strip-all + wasm-opt -Oz
bunx svelte-d wasm --ws . --debug    # symbols for IR work (`wasm-opt -g -O0`)

Or dub build --arch=wasm32-unknown-wasi --compiler=ldc2 --config=application --build=release. Probes: svelte_engine_eh_probe / svelte_engine_phobos_probe (node run-probes.mjs). Binaryen ≥123 parses try_table and -Ozs the ship module. The etcimon/binaryen fork also --asyncifys it; probes must still return 1 (D catch). Landing pad and .await stay in different functions. Kit-admin release is 0.93 MiB / 224 KB gzipped.

libwasm is dependency "libwasm" version=">=0.11.1" from github.com/etcimon/libwasm. A live checkout is optional (dub add-local); otherwise DUB fetches.

Host (vibe.0)

bunx svelte-d host --ws .            # debug
bunx svelte-d host --ws . --release  # optimize + strip

Or dub build --compiler=ldc2 --build=debug in webserver/. The host graph is the DUB registry (vibe-0, botan, memutils, …). svelte-d setup dub add-locals those packages only when checkouts happen to sit next to the compiler; a consumer machine does not need them.

bun run dev in a svelte-d app keeps debug. bun run build / svelte-d build is release + strip.

License

MIT. Dependencies keep their own terms (libwasm MIT, vibe.0 MIT + file exceptions).