chore(circuits): add constraint info print script

packages/circuits/package.json

@@ -15,6 +15,7 @@
     "build-test-circuits-c": "ts-node ./ts/compile.ts --cWitness",
     "build-test-circuits-wasm": "ts-node ./ts/compile.ts",
     "gen-zkeys": "ts-node ./ts/genZkeys.ts",
+    "info": "NODE_OPTIONS=--max-old-space-size=4096 ts-node ./ts/info.ts",
     "watch": "tsc --watch",
     "build": "tsc -p tsconfig.build.json",
     "circom:build": "NODE_OPTIONS=--max-old-space-size=4096 circomkit compile",
@@ -55,6 +56,7 @@
     "chai": "^4.3.10",
     "chai-as-promised": "^7.1.2",
     "fast-check": "^3.20.0",
+    "glob": "^11.0.0",
     "mocha": "^10.7.0",
     "ts-mocha": "^10.0.0",
     "ts-node": "^10.9.1",

packages/circuits/ts/info.ts

@@ -0,0 +1,47 @@
+// eslint-disable-next-line import/no-extraneous-dependencies
+import { glob } from "glob";
+
+import childProcess from "child_process";
+import fs from "fs";
+import path from "path";
+
+import type { CircuitConfig } from "circomkit";
+
+export async function info(zkeysPath: string): Promise<void> {
+  const files = await glob("**/*.r1cs", { cwd: zkeysPath });
+
+  const circuitsConfigPath = path.resolve(__dirname, "..", "circom", "circuits.json");
+  const circuitsConfig = JSON.parse(await fs.promises.readFile(circuitsConfigPath, "utf-8")) as unknown as Record<
+    string,
+    CircuitConfig
+  >;
+
+  const params = files
+    .map((file) => ({ config: circuitsConfig[file.split("/")[0]], file }))
+    .reduce<Record<string, string>>((acc, { config, file }) => {
+      acc[file] = `${config.template} [${config.params?.toString()}]`;
+
+      return acc;
+    }, {});
+
+  const { promisify } = await import("util");
+  const execFile = promisify(childProcess.execFile);
+
+  const data: { stdout: string; stderr: string }[] = [];
+
+  // eslint-disable-next-line @typescript-eslint/prefer-for-of
+  for (let index = 0; index < files.length; index += 1) {
+    // eslint-disable-next-line no-await-in-loop
+    const result = await execFile("snarkjs", ["r1cs", "info", path.resolve(zkeysPath, files[index])]);
+    data.push(result);
+  }
+
+  // eslint-disable-next-line no-console
+  console.log(data.map(({ stdout }, index) => `${files[index]}\n${params[files[index]]}\n${stdout}`).join("\n"));
+}
+
+if (require.main === module) {
+  (async () => {
+    await info(process.argv[process.argv.indexOf("--zkeys") + 1]);
+  })();
+}