Task 003: WASMブリッジ

セッション情報

• 日時: 2026-02-23
• 所要時間: 8分
• モデル: claude-opus-4-6
• メッセージ数: 95
• ツール呼出: 64回
• バージョン: Claude Code 2.1.50

ツール使用状況

セッションログ

[18:15] ユーザー

Check current_tasks/ for an unclaimed task. If empty, create initial tasks based on DESIGN.md.

Claim a task, work on it, commit your changes, and push to origin.

[18:15] アシスタント

I'll check the current tasks and project state to find an unclaimed task.

• Bash — List current tasks
• Bash — Recent git history
• Task — Read all task files

[18:16] アシスタント

Tasks 003, 004, and 005 are all unclaimed with their dependencies met. Task 003 (WASM bridge) is the most natural next step since it builds on the Rust core (002) and is needed by task 006. Let me read it in detail and the relevant design docs.

• Read — /workspace/current_tasks/003_wasm_bridge.md
• Read — /workspace/DESIGN.md
• TodoWrite — update task list

[18:16] アシスタント

Let me claim the task and explore the existing Rust API.

• Edit — /workspace/current_tasks/003_wasm_bridge.md
• TodoWrite — update task list
• Task — Explore Rust crate public API

[18:17] アシスタント

Excellent. I now have a complete picture of the API. Let me consult Codex on the WASM bridge design.

• TodoWrite — update task list
• Skill — nice-friend
• Bash — Consult Codex on WASM bridge design

[18:18] アシスタント

Codex confirms Approach A. Key takeaways:

• Flat f64 API with a separate solar-line-wasm crate
• Use wasm-pack for standardized builds
• Target web for GitHub Pages, nodejs for tests
• Return fixed arrays for simple tuples, objects only for complex results like KeplerSolution
• Export constants as a single grouped getter, not individual functions
• TodoWrite — update task list

[18:18] アシスタント

Now let me read the existing source files I need to reference, then create the WASM crate.

• Read — /workspace/crates/solar-line-core/src/lib.rs
• Read — /workspace/crates/solar-line-core/src/constants.rs
• Read — /workspace/crates/solar-line-core/src/orbits.rs
• Read — /workspace/crates/solar-line-core/src/kepler.rs
• Read — /workspace/crates/solar-line-core/Cargo.toml
• Read — /workspace/Cargo.toml
• Read — /workspace/.github/workflows/ci.yml
• Read — /workspace/ts/package.json
• Read — /workspace/ts/tsconfig.json

[18:18] アシスタント

Now I have all the context. Let me also read the units.rs to understand the newtype internals (particularly whether fields are pub or not).

• Read — /workspace/crates/solar-line-core/src/units.rs

[18:18] アシスタント

Good — all newtype inner fields are pub(f64), so I can construct them directly. Now let me create the WASM crate. First, let me check if wasm-pack is available.

• Bash — Check wasm tooling availability

[18:18] アシスタント

No wasm-pack installed, but we have the wasm32-unknown-unknown target. Let me install wasm-pack and then create the crate.

• Bash — Install wasm-pack

[18:19] アシスタント

Now let me create the WASM crate.

• Bash — Create WASM crate directory
• Write — → /workspace/crates/solar-line-wasm/Cargo.toml

[18:19] アシスタント

Now write the WASM bridge — a flat f64 API following the design decisions:

• Write — → /workspace/crates/solar-line-wasm/src/lib.rs

[18:20] アシスタント

Now let's build and test it.

• Bash — Run all Rust tests including WASM crate

[18:20] アシスタント

Two issues: unused import and JsError::new takes &str but map_err provides String. Let me fix both.

• Edit — /workspace/crates/solar-line-wasm/src/lib.rs
• Edit — /workspace/crates/solar-line-wasm/src/lib.rs
• Edit — /workspace/crates/solar-line-wasm/src/lib.rs
• Bash — Run all Rust tests

[18:20] アシスタント

The test that checks JsError results can't run on native targets because JsError is wasm-only. I need to adjust — for the error-returning functions, I should test them differently. The validation test needs to work without JsError. Let me fix the test:

• Edit — /workspace/crates/solar-line-wasm/src/lib.rs
• Bash — Run all Rust tests

[18:20] アシスタント

All 45 tests pass (37 core + 8 wasm). Now let me build the WASM package for nodejs target so TS tests can consume it.

• Bash — Build WASM package for nodejs target

[18:21] アシスタント

Now let me check what was generated and write the TypeScript round-trip tests.

• Bash — List generated WASM package files
• Read — /workspace/ts/pkg/solar_line_wasm.d.ts

[18:21] アシスタント

The generated types look clean. hohmann_transfer_dv returns Float64Array (from Box<[f64]>) — that works well. Now let me write the TypeScript round-trip tests.

• TodoWrite — update task list

[18:21] アシスタント

First let me remove the .gitignore inside the pkg directory — we need to commit the generated WASM package so CI can use it without rebuilding. Actually, let me think about this... The better approach is to have CI build the WASM package, not commit it. Let me check what's in the pkg .gitignore.

• Read — /workspace/ts/pkg/.gitignore
• Read — /workspace/ts/pkg/package.json

[18:21] アシスタント

The pkg has a * gitignore to prevent committing generated files. Good — we'll have CI build it. I need to remove that gitignore so tests can find the files, but we should gitignore the ts/pkg/ directory at the repo level. Let me check the existing gitignore.

• Read — /workspace/.gitignore
• Edit — /workspace/.gitignore

[18:21] アシスタント

Now write the TS round-trip tests. These tests verify the WASM bridge produces the same results as the pure TS implementation and the Rust core.

• Read — /workspace/ts/src/orbital.ts
• Read — /workspace/ts/src/orbital.test.ts

[18:21] アシスタント

Now let me write the WASM round-trip test file:

• Write — → /workspace/ts/src/wasm.test.ts

[18:22] アシスタント

Now let's run the TS tests:

• Bash — Run all TypeScript tests including WASM round-trip

[18:22] アシスタント

All 19 tests pass — 3 existing TS tests + 16 new WASM round-trip tests. Now let me update CI to include the WASM build step.

• TodoWrite — update task list
• Read — /workspace/.github/workflows/ci.yml

[18:22] アシスタント

The TypeScript job needs to also build the WASM package before running tests. I need to add Rust + wasm-pack to that job:

• Edit — /workspace/.github/workflows/ci.yml

[18:22] アシスタント

Let me also verify the tsc typecheck still passes (the wasm.test.ts imports from ../pkg/solar_line_wasm.js which uses dynamic import, so it should be fine):

• Bash — Run TypeScript type checker

[18:22] アシスタント

Good, passes clean. Let me also verify the full test suite one more time:

• Bash — Run all Rust and TS tests

[18:22] アシスタント

All 64 tests pass: 37 Rust core + 8 Rust WASM + 19 TypeScript (including 16 WASM round-trip tests).

Now let me update the task file and commit.

• TodoWrite — update task list
• Read — /workspace/current_tasks/003_wasm_bridge.md
• Write — → /workspace/current_tasks/003_wasm_bridge.md

[18:23] アシスタント

Now let me commit and push.

• Bash — Show working tree status
• Bash — Show staged and unstaged changes
• Bash — Recent commit history
• Bash — Stage all files for commit
• Bash — Create commit with WASM bridge changes
• Bash — Push to origin
• TodoWrite — update task list

[18:23] アシスタント

Now let me update the memory file for future sessions.

• Read — ~/.claude/projects/-workspace/memory/MEMORY.md
• Write — → ~/.claude/projects/-workspace/memory/MEMORY.md

[18:24] アシスタント

Task 003 is complete. Here's a summary of what was done:

Task 003: WASM Bridge — Done

Claimed and completed the WASM bridge task. Key deliverables:

New solar-line-wasm crate

• Flat f64 API (Codex-reviewed design) — all newtype wrapping happens at the WASM boundary
• 16 exported functions covering vis-viva, Hohmann transfers, orbital period, Kepler solver, anomaly conversions, mean motion, and propagation
• 3 constant getters returning grouped objects (gravitational parameters, orbit radii, reference orbits)

Round-trip tests

• 16 new TypeScript tests verifying WASM results match both the pure TS implementation and known reference values
• Tests cover every exported function plus error handling (throws on invalid eccentricity)
• 64 total tests across the project: 37 Rust core + 8 WASM + 19 TypeScript

CI updated

• TypeScript job now builds WASM via wasm-pack before running tests
• Added wasm32-unknown-unknown target and jetli/wasm-pack-action

Pushed to origin/main

Commit 777371c — ready for the next session to pick up tasks 004, 005, or other work.