Fix import of poseidon-lite dependency

.husky/commit-msg

@@ -1,4 +1,3 @@
 #!/usr/bin/env sh
 . "$(dirname -- "$0")/_/husky.sh"
 
-npx --no-install commitlint --edit $1

.yarnrc.yml

@@ -3,9 +3,9 @@ checksumBehavior: update
 nodeLinker: node-modules
 
 plugins:
-    - path: .yarn/plugins/@yarnpkg/plugin-workspace-tools.cjs
-      spec: "@yarnpkg/plugin-workspace-tools"
-    - path: .yarn/plugins/@yarnpkg/plugin-version.cjs
-      spec: "@yarnpkg/plugin-version"
+  - path: .yarn/plugins/@yarnpkg/plugin-version.cjs
+    spec: "@yarnpkg/plugin-version"
+  - path: .yarn/plugins/@yarnpkg/plugin-workspace-tools.cjs
+    spec: "@yarnpkg/plugin-workspace-tools"
 
 yarnPath: .yarn/releases/yarn-3.2.1.cjs

README.md

@@ -1,3 +1,18 @@
+# Semaphore v3.15.2 Fork
+
+This is a very tiny fork of `@semaphore-protocol/proof` version v3.15.2 to patch the inclusion of `poseidon-lite`, so that:
+a) the package is listed as a dependency rather than devDependency, allowing bundlers to handle it correctly
+b) only the necessary `poseidon2` constants are imported, rather than the full set of constants (many of which are very large)
+
+The net effect is to reduce the output bundle for `@semaphore-protocol/proof` from >600KiB to ~45KiB, with no change in functionality.
+
+This branch also includes the re-addition of Yarn 3.2.1, which is required in order to build the 3.15.2 branch, but which was deleted from the git history in the original Semaphore repo.
+
+To build, run `yarn build:libraries`.
+To publish the patched package, run `./publish-patched-proof-package.sh`.
+
+---
+
 <p align="center">
     <h1 align="center">
       <picture>

packages/proof/package-patched.json

@@ -0,0 +1,53 @@
+{
+    "name": "@pcd/semaphore-proof-v3",
+    "version": "3.15.2",
+    "description": "A library to generate and verify Semaphore proofs.",
+    "license": "MIT",
+    "main": "dist/index.node.js",
+    "exports": {
+        "import": "./dist/index.node.mjs",
+        "require": "./dist/index.node.js",
+        "types": "./dist/types/index.d.ts"
+    },
+    "types": "dist/types/index.d.ts",
+    "files": [
+        "dist/",
+        "src/",
+        "LICENSE",
+        "README.md"
+    ],
+    "repository": "https://github.com/semaphore-protocol/semaphore",
+    "homepage": "https://github.com/semaphore-protocol/semaphore/tree/main/packages/proof",
+    "bugs": {
+        "url": "https://github.com/semaphore-protocol/semaphore.git/issues"
+    },
+    "scripts": {
+        "build:watch": "rollup -c rollup.config.ts -w --configPlugin typescript",
+        "build": "rimraf dist && rollup -c rollup.config.ts --configPlugin typescript"
+    },
+    "publishConfig": {
+        "access": "public"
+    },
+    "devDependencies": {
+        "@rollup/plugin-commonjs": "^24.1.0",
+        "@rollup/plugin-json": "^5.0.1",
+        "@rollup/plugin-node-resolve": "^15.0.2",
+        "rimraf": "^5.0.5",
+        "rollup": "^4.0.2",
+        "rollup-plugin-cleanup": "^3.2.1",
+        "rollup-plugin-typescript2": "^0.31.2"
+    },
+    "peerDependencies": {
+        "@semaphore-protocol/group": "3.15.2",
+        "@semaphore-protocol/identity": "3.15.2"
+    },
+    "dependencies": {
+        "@ethersproject/bignumber": "^5.5.0",
+        "@ethersproject/bytes": "^5.7.0",
+        "@ethersproject/keccak256": "^5.7.0",
+        "@ethersproject/strings": "^5.5.0",
+        "@zk-kit/groth16": "0.3.0",
+        "@zk-kit/incremental-merkle-tree": "0.4.3",
+        "poseidon-lite": "^0.2.0"
+    }
+}

packages/proof/package.json

@@ -33,7 +33,6 @@
         "@rollup/plugin-commonjs": "^24.1.0",
         "@rollup/plugin-json": "^5.0.1",
         "@rollup/plugin-node-resolve": "^15.0.2",
-        "poseidon-lite": "^0.2.0",
         "rimraf": "^5.0.5",
         "rollup": "^4.0.2",
         "rollup-plugin-cleanup": "^3.2.1",
@@ -49,6 +48,7 @@
         "@ethersproject/keccak256": "^5.7.0",
         "@ethersproject/strings": "^5.5.0",
         "@zk-kit/groth16": "0.3.0",
-        "@zk-kit/incremental-merkle-tree": "0.4.3"
+        "@zk-kit/incremental-merkle-tree": "0.4.3",
+        "poseidon-lite": "^0.2.0"
     }
 }

packages/proof/src/calculateNullifierHash.ts

@@ -1,5 +1,5 @@
 import { BytesLike, Hexable } from "@ethersproject/bytes"
-import { poseidon2 } from "poseidon-lite"
+import { poseidon2 } from "poseidon-lite/poseidon2"
 import hash from "./hash"
 
 /**

publish-patched-proof-package.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+npm login
+
+BASEDIR=$(dirname "$0")
+cd $BASEDIR/packages/proof
+cp package.json package-backup.json
+rm package.json
+cp package-patched.json package.json
+npm publish 
+rm package.json
+mv package-backup.json package.json