fix(interfaces): add incremental build logic to avoid unnecessary rebuilding

- Add timestamp-based checks for WAGMI, ethers-v5, and TypeScript compilation
- Skip type generation when output files are newer than source files
- Improve file-by-file comparison for dist directory organization
- Reduce build time from 5+ seconds to ~600ms when no changes needed
- Maintain build correctness while improving developer experience

Author: RembrandtK

packages/interfaces/scripts/build.sh

@@ -1,49 +1,127 @@
 #!/bin/bash
 
-# Complete build script for the interfaces package
+# Complete build script for the interfaces package with incremental build support
 # This script handles:
 # 1. Hardhat compilation (generates artifacts and ethers-v6 types)
 # 2. Type generation (WAGMI and ethers-v5 types)
 # 3. TypeScript compilation (both v6 and v5 types)
 
 set -e  # Exit on any error
 
-echo "🔨 Starting complete build process..."
+echo "🔨 Starting build process..."
+
+# Helper function to check if target is newer than sources
+is_newer() {
+    local target="$1"
+    shift
+    local sources=("$@")
+
+    # If target doesn't exist, it needs to be built
+    if [[ ! -e "$target" ]]; then
+        return 1
+    fi
+
+    # Check if any source is newer than target
+    for source in "${sources[@]}"; do
+        if [[ -e "$source" && "$source" -nt "$target" ]]; then
+            return 1
+        fi
+    done
+
+    return 0
+}
+
+# Helper function to find files matching patterns
+find_files() {
+    local pattern="$1"
+    find . -path "$pattern" -type f 2>/dev/null || true
+}
 
 # Step 1: Hardhat compilation
 echo "📦 Compiling contracts with Hardhat..."
-hardhat compile
-
-# Step 2: Generate types
-echo "🏗️  Generating type definitions..."
-
-# Build wagmi types
-echo "  - Generating WAGMI types..."
-pnpm wagmi generate
-
-# Build ethers-v5 types
-echo "  - Generating ethers-v5 types..."
-pnpm typechain \
-  --target ethers-v5 \
-  --out-dir types-v5 \
-  'artifacts/contracts/**/!(*.dbg).json' \
-  'artifacts/@openzeppelin/**/!(*.dbg).json'
-
-# Step 3: TypeScript compilation
-echo "🔧 Compiling TypeScript..."
-
-# Compile v6 types (default tsconfig)
-echo "  - Compiling ethers-v6 types..."
-tsc
-
-# Compile v5 types (separate tsconfig)
-echo "  - Compiling ethers-v5 types..."
-tsc -p tsconfig.v5.json
-
-# Step 4: Merge v5 types into dist directory
-echo "📁 Organizing compiled types..."
-mkdir -p dist/types-v5
-cp -r dist-v5/* dist/types-v5/
+pnpm hardhat compile
+
+# Step 2: Generate types (only if needed)
+echo "🏗️  Checking type definitions..."
+
+# Check if WAGMI types need regeneration
+wagmi_sources=(
+    "wagmi.config.mts"
+    $(find_files "./artifacts/contracts/**/!(*.dbg).json")
+)
+if ! is_newer "wagmi/generated.ts" "${wagmi_sources[@]}"; then
+    echo "  - Generating WAGMI types..."
+    pnpm wagmi generate
+else
+    echo "  - WAGMI types are up to date"
+fi
+
+# Check if ethers-v5 types need regeneration
+v5_artifacts=($(find_files "./artifacts/contracts/**/!(*.dbg).json") $(find_files "./artifacts/@openzeppelin/**/!(*.dbg).json"))
+if ! is_newer "types-v5/index.ts" "${v5_artifacts[@]}"; then
+    echo "  - Generating ethers-v5 types..."
+    pnpm typechain \
+      --target ethers-v5 \
+      --out-dir types-v5 \
+      'artifacts/contracts/**/!(*.dbg).json' \
+      'artifacts/@openzeppelin/**/!(*.dbg).json'
+else
+    echo "  - ethers-v5 types are up to date"
+fi
+
+# Step 3: TypeScript compilation (only if needed)
+echo "🔧 Checking TypeScript compilation..."
+
+# Check if v6 types need compilation
+v6_sources=(
+    "hardhat.config.ts"
+    $(find_files "./src/**/*.ts")
+    $(find_files "./types/**/*.ts")
+    $(find_files "./wagmi/**/*.ts")
+)
+if ! is_newer "dist/tsconfig.tsbuildinfo" "${v6_sources[@]}"; then
+    echo "  - Compiling ethers-v6 types..."
+    pnpm tsc
+    touch dist/tsconfig.tsbuildinfo
+else
+    echo "  - ethers-v6 types are up to date"
+fi
+
+# Check if v5 types need compilation
+v5_sources=($(find_files "./types-v5/**/*.ts"))
+if ! is_newer "dist-v5/tsconfig.v5.tsbuildinfo" "${v5_sources[@]}"; then
+    echo "  - Compiling ethers-v5 types..."
+    pnpm tsc -p tsconfig.v5.json
+    touch dist-v5/tsconfig.v5.tsbuildinfo
+else
+    echo "  - ethers-v5 types are up to date"
+fi
+
+# Step 4: Merge v5 types into dist directory (only if needed)
+needs_copy=false
+if [[ -d "dist-v5" ]]; then
+    if [[ ! -d "dist/types-v5" ]]; then
+        needs_copy=true
+    else
+        # Check if any file in dist-v5 is newer than the corresponding file in dist/types-v5
+        while IFS= read -r -d '' file; do
+            relative_path="${file#dist-v5/}"
+            target_file="dist/types-v5/$relative_path"
+            if [[ ! -e "$target_file" || "$file" -nt "$target_file" ]]; then
+                needs_copy=true
+                break
+            fi
+        done < <(find dist-v5 -type f -print0)
+    fi
+fi
+
+if [[ "$needs_copy" == "true" ]]; then
+    echo "📁 Organizing compiled types..."
+    mkdir -p dist/types-v5
+    cp -r dist-v5/* dist/types-v5/
+else
+    echo "📁 Compiled types organization is up to date"
+fi
 
 echo "✅ Build completed successfully!"
 echo "📄 Generated types:"