Improvements

.github/workflows/ci.yaml

@@ -83,16 +83,16 @@ jobs:
           cache-bin: false
       - name: Prepare Output Directory
         run: mkdir ${{ runner.temp }}/host-tools
-      - name: Build `cargo-js-sys`
-        working-directory: host
-        run: |
-          cargo ${{ matrix.os.sub-command }} build -p cargo-js-sys ${{ matrix.os.args }} --release
-          cp target/${{ matrix.os.path }}release/cargo-js-sys${{ matrix.os.exe }} ${{ runner.temp }}/host-tools/
       - name: Build `js-bindgen-ld`
         working-directory: host
         run: |
           cargo ${{ matrix.os.sub-command }} build -p js-bindgen-ld ${{ matrix.os.args }} --release
           cp target/${{ matrix.os.path }}release/js-bindgen-ld${{ matrix.os.exe }} ${{ runner.temp }}/host-tools/
+      - name: Build `js-bindgen`
+        working-directory: host
+        run: |
+          cargo ${{ matrix.os.sub-command }} build -p js-bindgen-cli ${{ matrix.os.args }} --release
+          cp target/${{ matrix.os.path }}release/js-bindgen${{ matrix.os.exe }} ${{ runner.temp }}/host-tools/
       - name: Build `js-bindgen-runner`
         working-directory: host
         run: |
@@ -139,6 +139,7 @@ jobs:
         target-feature:
           - { name: default }
           - { name: atomics, rust: nightly, components: -c rust-src, description: Atomics }
+          - { name: exception-handling, rust: nightly, description: Exception Handling }
 
     env:
       JBG_DEV_TOOLS: 1
@@ -204,6 +205,7 @@ jobs:
         target-feature:
           - { name: default }
           - { name: atomics, rust: nightly, components: -c rust-src, description: Atomics }
+          - { name: exception-handling, rust: nightly, description: Exception Handling }
 
     env:
       JBG_DEV_TOOLS: 1
@@ -255,7 +257,7 @@ jobs:
 
     runs-on: ${{ matrix.runner.os }}
 
-    timeout-minutes: 20
+    timeout-minutes: 30
 
     strategy:
       fail-fast: false
@@ -276,6 +278,7 @@ jobs:
         target-feature:
           - { name: default }
           - { name: atomics, rust: nightly, components: -c rust-src, description: " Atomics" }
+          - { name: exception-handling, rust: nightly, description: " Exception Handling" }
         exclude:
           - runner: { name: mac-os }
             target: { name: wasm64 }
@@ -521,33 +524,3 @@ jobs:
       - name: Test
         working-directory: host
         run: js-bindgen-dev host test -v
-
-  cargo-js-sys:
-    name: Check `cargo-js-sys`
-
-    needs: host-tools
-
-    runs-on: ubuntu-latest
-
-    timeout-minutes: 20
-
-    env:
-      JBG_DEV_TOOLS: 1
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v7
-        with:
-          persist-credentials: false
-      - name: Download Host Tools
-        uses: actions/download-artifact@v8
-        with:
-          name: host-tools-linux
-          path: ${{ runner.temp }}/host-tools/
-      - name: Install Host Tools
-        run: |
-          chmod +x ${{ runner.temp }}/host-tools/*
-          echo "${{ runner.temp }}/host-tools" >> $GITHUB_PATH
-      - name: Check
-        working-directory: client
-        run: cargo-js-sys js-sys -c --workspace -v

.gitignore

@@ -3,3 +3,5 @@
 /host/target
 /host/Cargo.lock
 /rust-toolchain.toml
+/web/target
+/web/Cargo.lock

.prettierignore

@@ -1,2 +1,4 @@
 *.mjs
+/benchmarks/generated
+/benchmarks/target
 /host/cli-lib/src/js/imports.d.mts

TODO.md

@@ -49,7 +49,6 @@
   `extern { fn <name> ... }` definition can shadow parameter values.
 - `js-bindgen` macro custom section generation can produce name collisions with intermediate
   variables.
-- Allocate slots on the `externref` table in batches.
 - Determine what to do with `js_sys::UnwrapThrowExt`. Avoiding the panic machinery is nice for some
   very niche use-cases but it might be very annoying for most users. Maybe hide it behind a `cfg`
   flag?

benchmarks/.gitignore

@@ -0,0 +1,3 @@
+/generated
+/node_modules
+/target

benchmarks/Cargo.toml

@@ -0,0 +1,8 @@
+[workspace]
+resolver = "3"
+members = ["js-bindgen", "wasm-bindgen"]
+
+[workspace.package]
+edition = "2024"
+license = "MIT OR Apache-2.0"
+publish = false

benchmarks/README.md

@@ -0,0 +1,29 @@
+# Benchmarks
+
+Run the raw call benchmark with Node.js:
+
+```console
+npm install
+node bench.mjs
+```
+
+Pass one or more case-insensitive substrings to run only matching benchmarks. Multiple filters are
+combined with `OR`:
+
+```console
+node bench.mjs vec_u8 option_i32
+```
+
+The comparison uses the in-tree `js-bindgen` and the exact published `wasm-bindgen` version pinned
+in `Cargo.toml`. The matching `wasm-bindgen` CLI must be available on `PATH`.
+
+Warmup, batching, sampling, and statistics are handled by `mitata`. Every implementation of every
+benchmark runs in a fresh process. The parent process aggregates the results after both
+implementations finish, preventing one benchmark's JIT and GC state from affecting another.
+
+The runner recreates the ignored `generated` directory on every invocation. Rust build artifacts
+remain in `target` so subsequent filtered runs only rebuild changed inputs.
+
+Benchmark functions are discovered from raw Wasm exports whose names start with `bench_`. To add a
+benchmark, export the same `bench_*` function from both Rust crates. The runner infers Number,
+BigInt, and reference parameters before measurement and gives every benchmark its own Wasm instance.