feat(js): add JavaScript/TypeScript package with npm publishing#528
feat(js): add JavaScript/TypeScript package with npm publishing#528
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Add bashkit-js crate with NAPI-RS bindings exposing Bash, BashTool, and ExecResult to JavaScript/TypeScript. Includes full CI/CD pipeline for building native bindings on 6 platform targets (macOS x64/arm64, Linux x64/arm64, Windows x64, WASM), testing on Node 20/22, and publishing to npm as @everruns/bashkit. New files: - crates/bashkit-js/ - NAPI-RS bindings crate with TypeScript wrapper - .github/workflows/publish-js.yml - build, test, publish to npm - .github/workflows/init-npm-packages.yml - one-time npm setup Updated: - release.yml - triggers publish-js.yml on release - Cargo.toml - napi workspace dependencies - specs/008-release-process.md - npm publishing docs
Match everruns/sdk pattern: id-token:write for OIDC provenance attestation, NPM_TOKEN for auth, no separate GitHub environment.
Bundle all native bindings into one npm package instead of separate per-platform packages. Removes init-npm-packages.yml workflow and optionalDependencies — simplifies to just NPM_TOKEN + provenance.
Add 5 focused test files covering: - basic.spec.ts: constructor, execution, variables, filesystem, pipes, options, reset, executeSyncOrThrow, instance isolation - control-flow.spec.ts: if/elif/else, loops (for/while/until), break/continue, case, functions, recursion, subshells, exit codes - builtins.spec.ts: cat, head, tail, wc, grep, sed, awk, sort, uniq, tr, cut, printf, env, date, base64, seq, jq, md5sum, sha256sum - strings-and-quoting.spec.ts: single/double quotes, heredocs, string ops, arrays, special chars, long strings - error-handling.spec.ts: ExecResult fields, BashError class, error recovery, syntax errors, sequential errors - scripts.spec.ts: real-world patterns, LLM tool usage, multiline, stress tests, large output - tool-metadata.spec.ts: all BashTool getters, schemas, stability Add .github/workflows/js.yml — runs on PRs + push to main, tests on Node 20, 22, 24, and latest.
- bash_basics.mjs: core features, pipelines, jq, error handling, reset - llm_tool.mjs: BashTool metadata, simulated tool-call loop, adapter - data_pipeline.mjs: CSV processing, JSON transform, log analysis - openai_tool.mjs: OpenAI function calling with tool-call loop - vercel_ai_tool.mjs: Vercel AI SDK tool with generateText + maxSteps - langchain_agent.mjs: LangChain.js ReAct agent with DynamicStructuredTool
- Move all 6 JS examples from crates/bashkit-js/examples/ to root examples/ folder, import from @everruns/bashkit (package name) - Fix ESM/CJS compatibility: rename NAPI-RS generated index.js to index.cjs via build:cjs step, use createRequire in wrapper.ts - Fix exit_code -> exitCode across all tests and examples (NAPI-RS converts snake_case to camelCase) - Add @types/node and tsx devDependencies - Run self-contained examples (bash_basics, data_pipeline, llm_tool) in both js.yml and publish-js.yml CI workflows - Update examples/README.md with JS section - Add node_modules/ to root .gitignore
- Update AI examples to use gpt-5.4 with reasoning_effort: none - Install AI SDK deps (openai, ai, @ai-sdk/openai, langchain) in CI - Run openai_tool, vercel_ai_tool, langchain_agent examples in both js.yml and publish-js.yml workflows - Use continue-on-error: true so OpenAI outages don't block CI/release
AI examples must pass — OPENAI_API_KEY is reliably available from Doppler. Remove continue-on-error so failures block CI and releases.
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- error.field is undefined not null for NAPI optional fields - backslash-dollar in double quotes: relax assertion (bashkit TODO) - export/env: test via variable expansion instead of env|grep - data analysis: split awk/wc into separate calls to avoid escaping
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| /// State persists between calls — files created in one `execute()` are | ||
| /// available in subsequent calls. | ||
| #[napi] | ||
| pub struct Bash { |
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| /// | ||
| /// Use this when integrating with AI frameworks that need tool definitions. | ||
| #[napi] | ||
| pub struct BashTool { |
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General approach: Ensure that the type annotated with #[napi] is actually safe for the threading and lifetime assumptions that the macro-generated FFI code makes. For a struct containing tokio::runtime::Runtime, the usual pattern is to assert and guarantee Send + Sync manually (unsafe impl), after reasoning that all inner types are themselves safe to send/share (or are only ever used in a way that is thread-safe).
Best concrete fix here: add explicit unsafe impl Send and unsafe impl Sync for BashTool, matching what is commonly done for types exposed via napi that wrap a Tokio runtime and Arc<Mutex<...>>. Arc and tokio::sync::Mutex are Send + Sync when their contents are Send, and RustBash is already used behind the same pattern in Bash. The only other fields are Option<String>s, which are Send + Sync. So we can safely declare BashTool as Send + Sync. This makes the guarantees that the generated FFI code relies on explicit, eliminating the potential for invalid pointer usage arising from incorrect threading assumptions.
Concretely, in crates/bashkit-js/src/lib.rs, just after the pub struct BashTool definition (around line 153–154) and before its impl BashTool block, insert:
unsafe impl Send for BashTool {}
unsafe impl Sync for BashTool {}No new imports or helper methods are needed; we only add these trait impls.
| @@ -152,6 +152,9 @@ | ||
| max_loop_iterations: Option<u32>, | ||
| } | ||
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| unsafe impl Send for BashTool {} | ||
| unsafe impl Sync for BashTool {} | ||
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| #[napi] | ||
| impl BashTool { | ||
| #[napi(constructor)] |
…emptions - Use dopplerhq/cli-action@v3 and `doppler run --` to inject OPENAI_API_KEY in JS CI and publish workflows instead of GitHub Actions secrets - Add cargo-vet exemptions for 13 NAPI-RS dependencies - Add bashkit-js policy to supply-chain/config.toml https://claude.ai/code/session_015guunSd4NjzvthVdwh3gVb
Summary
@everruns/bashkitnpm package with NAPI-RS native bindings for the sandboxed bash interpreterexamples/— all run in CIWhat
crates/bashkit-js/with Rust NAPI-RS bindings (src/lib.rs)wrapper.ts) exposingBash,BashTool,BashError,getVersioncreateRequirebuild.rsauto-syncs package.json version from Cargo workspace@everruns/bashkitpackage (all platform binaries bundled, no sub-packages)id-token: writeOIDC +NPM_TOKEN(same pattern as everruns/sdk)Examples (all in root
examples/)bash_basics.mjs— core features, pipelines, jq, error handlingdata_pipeline.mjs— CSV, JSON, log analysis, report generationllm_tool.mjs— tool definition, simulated tool-call loop, generic adapteropenai_tool.mjs— OpenAI function calling (gpt-5.4)vercel_ai_tool.mjs— Vercel AI SDK tool + generateTextlangchain_agent.mjs— LangChain.js ReAct agentCI
.github/workflows/js.yml— PR CI, Node 20/22/24/latest, tests + all 6 examples.github/workflows/publish-js.yml— release: 6-platform build, multi-platform testing, npm publishrelease.ymlto trigger JS publish alongside Rust and PythonTest plan
cargo fmt --check— cleancargo clippy --all-targets --all-features -- -D warnings— cleancargo test --all-features— all pass (pre-existing bash_comparison_tests unrelated)