Shrink Wasm binary

.github/workflows/build.yml

@@ -11,8 +11,8 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - run: cargo test
-      - run: cargo build --package=floretta-wasm --target=wasm32-unknown-unknown --release
-      - run: cp target/wasm32-unknown-unknown/release/floretta_wasm.wasm floretta.wasm
+      - run: cargo build --package=floretta-wasm --target=wasm32-unknown-unknown --profile=tiny -Zbuild-std=std,panic_abort -Zbuild-std-features=optimize_for_size,panic_immediate_abort
+      - run: cp target/wasm32-unknown-unknown/tiny/floretta_wasm.wasm floretta.wasm
       - run: .github/summary.py >> $GITHUB_STEP_SUMMARY
       - uses: actions/upload-artifact@v4
         with:

Cargo.toml

@@ -18,3 +18,11 @@ wasmparser = "0.220"
 wasmprinter = "0.220"
 wasmtime = "26"
 wat = "1"
+
+# https://github.com/johnthagen/min-sized-rust
+[profile.tiny]
+codegen-units = 1
+inherits = "release"
+lto = true
+opt-level = "z"
+strip = true

rust-toolchain.toml

@@ -1,4 +1,5 @@
 [toolchain]
-channel = "stable"
+channel = "nightly-2024-11-20"
 profile = "default"
+components = ["rust-src"]
 targets = ["wasm32-unknown-unknown"]