[aakashpawar1999]

What

• npm package @zeroonething/replysieve: the library compiled to WebAssembly with wasm-bindgen. new Checker(options, apiKey) with check, checkBatch and a synchronous precheck returns the same verdict JSON as the CLI, inside Cloudflare Workers (the workerd export condition, bundled by wrangler) and Node 20+ (the node condition). TypeScript types included.
• Options: level, preset, models, rules, stock_phrases, a TOML config string (other fields override it, as CLI flags override the file), timeout_ms, base_url, log. Unknown keys, levels and presets and invalid TOML throw an Error named ReplysieveError.
• On wasm32 the OpenRouter client calls the runtime's fetch with AbortSignal.timeout, keeping the same ordered model fallback and the needs_review/model_unavailable outcome. Native keeps reqwest.
• Cargo: clap, tokio, axum, rmcp and schemars sit behind the default cli feature; the binary requires it. cargo build --lib --no-default-features --target wasm32-unknown-unknown builds. std::time::Instant is replaced by web-time; Config::load is native-only.
• CI: wasm32 clippy and build, and a JavaScript job on Node 20 and 22 that builds the package and runs the Node, golden and workerd suites and checks the gzipped wasm stays under 1 MiB.
• Release workflow: checks npm/package.json matches Cargo.toml, checks the registry, and publishes to npm with provenance from the npm environment (main only; trusted publishing when configured, otherwise NPM_TOKEN). Skips when the version exists, so reruns stay idempotent. Dependabot watches /npm.
• README "Use it from JavaScript" (Worker with a secret, Node, browser warning), npm README, CHANGELOG 0.3.0, CONTRIBUTING, version 0.3.0.

Proof

• cargo test --locked: 48 passed, unchanged from 0.2.0. clippy -D warnings on native and wasm32, fmt, cargo-deny, cargo doc -D warnings, cargo publish --dry-run all pass.
• npm test: 28 passed on Node 20.20.2, 22.23.4 and 24. Includes a golden test where 15 cases (every pre-check reason, model approve and rejects, fallback, model_unavailable, config and flag precedence) give the same verdicts from the package and the CLI against one mocked OpenRouter.
• npm run test:workerd: 5 passed. The package is packed, installed into a scratch project, bundled and run by wrangler's local runtime. Covers fallback, timeout abort, duplicate without a network call, checkBatch and typed errors. precheck inside workerd: p99 1 ms over 300 calls.
• Gzipped wasm is 215 KB and npm pack is 236 KB. tsc --strict passes against the packed types. actionlint passes on both workflows.