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duckhts-wasm-debugging

Use when debugging DuckHTS in webR, duckdb-wasm, or Emscripten/browser workers.

Skill by sounkou-bioinfo

IndexedMIT★ 2
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Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

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About

Use when debugging DuckHTS in webR, duckdb-wasm, or Emscripten/browser workers.

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What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

Tools
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Secrets
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Install scripts
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Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/duckhts-wasm-debugging

What's inside

Skill name
duckhts-wasm-debugging
Description
Use when debugging DuckHTS in webR, duckdb-wasm, or Emscripten/browser workers.
License
MIT
Instructions
26 lines in SKILL.md · view on GitHub

Files (1)

  • SKILL.md

SKILL.md (first lines)

# DuckHTS wasm debugging

## Runtime identity

Distinguish:

- host build artifacts;
- the built `Rduckhts_<Version>.tgz` used by webR;
- a webR package runtime;
- a duckdb-wasm extension side module and worker/browser runtime.

Reproduce in the actual target runtime and inspect the artifact actually loaded there. A host `.Rcheck` file with a wasm-looking name is not evidence.

## Checks

- Preserve Emscripten linker flags and DuckDB init-symbol exports.
- Verify the wasm export section; `strings` or a symbol table alone is insufficient.
- Gate wasm behavior on real Emscripten target detection.
- Keep the canonical socket/i64 compatibility shim in `src/include/wasm_socket_compat.h`.
- Keep htslib curl/S3/GCS disabled unless the browser transport model changes.
- Browser HTTP uses `src/wasm_http_hfile.c`: same-origin works; remote URLs require CORS; proxy environment variables do not control XHR/fetch.
- Validate packaging, worker loading, SQL execution, and error reporting, not only compilation.

Do not diagnose an init-export failure as package installation success, or webR behavior as proof for duckdb-wasm. Follow the repository's browser/container workflow and then run the ordinary DuckHTS package gates for shared code.

From sounkou-bioinfo/pi-skills, MIT.

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Stars
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Last commit (this folder)
Sep 6, 2026 (1 month ago)

From GitHub (fetched Oct 24, 2026).

Details

License
MIT
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

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duckhts-wasm-debugging skill. Agent Mart. https://agentmart.dev/skills/sounkou-bioinfo-duckhts-wasm-debugging (last updated 2026-10-24)