typechain artifacts

Signed-off-by: Faisal Usmani <faisal.of.usmani@gmail.com>

Author: fusmanii

.github/actions/generate-evm-artifacts/action.yml

@@ -27,9 +27,12 @@ runs:
     - name: Build Foundry
       shell: bash
       run: forge build --skip test script
+    - name: Generate Typechain artifacts
+      shell: bash
+      run: npx ts-node scripts/typechainArtifacts.ts
     - name: Generate Typechain
       shell: bash
-      run: npx typechain --target ethers-v5 "out/!(build-info)/**/+([a-zA-Z0-9_]).json" --out-dir typechain
+      run: npx typechain --target ethers-v5 "typechain-artifacts" --out-dir typechain
     - name: Archive EVM artifacts (for caching)
       shell: bash
       env:

.gitignore

@@ -31,6 +31,9 @@ out
 zkout
 cache-foundry
 
+# Typechain
+.typechain-artifacts
+
 # Upgradeability files
 .openzeppelin
 

scripts/typechainArtifacts.ts

@@ -0,0 +1,51 @@
+import fs from "fs";
+import path from "path";
+import fg from "fast-glob";
+
+type ArtifactJson = {
+  contractName?: string;
+  [key: string]: unknown;
+};
+
+const OUT_DIR = "out";
+const STAGE_DIR = ".typechain-artifacts";
+
+function main() {
+  if (fs.existsSync(STAGE_DIR)) {
+    fs.rmdirSync(STAGE_DIR, { recursive: true });
+  }
+  fs.mkdirSync(STAGE_DIR, { recursive: true });
+
+  const files = fg.sync([`${OUT_DIR}/**/*.json`, `!${OUT_DIR}/build-info/**`], {
+    dot: false,
+    onlyFiles: true,
+  });
+
+  const seen = new Map<string, string>(); // contractName -> first file path kept
+  const dups: Array<{ name: string; kept: string; dropped: string }> = [];
+
+  for (const file of files) {
+    const name = file.split("/").pop()?.split(".")[0];
+    if (!name) continue;
+
+    const already = seen.get(name);
+    if (already) {
+      dups.push({ name, kept: already, dropped: file });
+      continue;
+    }
+
+    seen.set(name, file);
+
+    // One artifact per name => stable TypeChain inputs
+    const dest = path.join(STAGE_DIR, `${name}.json`);
+    fs.copyFileSync(file, dest);
+  }
+
+  if (dups.length > 0) {
+    console.warn(`\nTypeChain dedupe: dropped ${dups.length} duplicate contract names:\n`);
+  }
+
+  console.log(`Staged ${seen.size} unique artifacts into ${STAGE_DIR}/`);
+}
+
+main();