wasm-size: Compare base..head in size measurements, and apply nightly…

… optimizations. (#4682)

.github/workflows/wasm-size.yml

@@ -48,8 +48,8 @@ jobs:
     steps:
       - name: Checkout base branch
         uses: actions/checkout@v4
-        # with:
-        #   ref: ${{ github.event.pull_request.base.sha }}
+        with:
+          ref: ${{ github.event.pull_request.base.sha }}
 
       - uses: cachix/install-nix-action@v24
         with:

query-engine/query-engine-wasm/build.sh

@@ -2,8 +2,8 @@
 # Call this script as `./build.sh <npm_version>`
 set -euo pipefail
 
-rustup default stable
-
+OUT_VERSION="${1:-}"
+OUT_NPM_NAME="@prisma/query-engine-wasm"
 CURRENT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
 REPO_ROOT="$( cd "$( dirname "$CURRENT_DIR/../../../" )" >/dev/null 2>&1 && pwd )"
 
@@ -38,12 +38,20 @@ then
     curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
 fi
 
+echo "ℹ️  Configuring rust toolchain to use nightly and rust-src component"
+rustup default nightly-2024-01-25 
+rustup target add wasm32-unknown-unknown
+rustup component add rust-src --target wasm32-unknown-unknown
+
+
 echo "Building query-engine-wasm using $WASM_BUILD_PROFILE profile"
-CARGO_PROFILE_RELEASE_OPT_LEVEL="z" wasm-pack build "--$WASM_BUILD_PROFILE" --target $OUT_TARGET --out-dir "$OUT_FOLDER" --out-name query_engine
+export RUSTFLAGS="-Zlocation-detail=none"
+CARGO_PROFILE_RELEASE_OPT_LEVEL="z" wasm-pack build "--$WASM_BUILD_PROFILE" --target "$OUT_TARGET" --out-dir "$OUT_FOLDER" --out-name query_engine . \
+    -Zbuild-std=std,panic_abort -Zbuild-std-features=panic_immediate_abort
 
 # wasm-opt pass
 WASM_OPT_ARGS=(
-    "-Os"                                 # execute size-focused optimization passes
+    "-Os"                                 # execute size-focused optimization passes (-Oz actually increases size by 1KB)
     "--vacuum"                            # removes obviously unneeded code
     "--duplicate-function-elimination"    # removes duplicate functions 
     "--duplicate-import-elimination"      # removes duplicate imports
@@ -132,4 +140,4 @@ export * from "./${BG_FILE}";
 EOF
 }
 
-enable_cf_in_bindings "query_engine.js"
+enable_cf_in_bindings "query_engine.js"