fix js ts modules with jest

package.json

@@ -29,10 +29,14 @@
   },
   "homepage": "https://github.com/appliedzkp/libsemaphore#readme",
   "devDependencies": {
+    "@babel/core": "^7.15.8",
+    "@babel/preset-env": "^7.15.8",
+    "@babel/preset-typescript": "^7.15.0",
     "@types/jest": "^27.0.2",
     "@types/node": "^16.10.8",
     "@typescript-eslint/eslint-plugin": "^5.1.0",
     "@typescript-eslint/parser": "^5.1.0",
+    "babel-jest": "^27.3.1",
     "bigint-conversion": "^2.1.12",
     "eslint": "^8.0.1",
     "eslint-config-prettier": "^8.3.0",
@@ -40,7 +44,7 @@
     "jest-config": "^27.2.5",
     "lerna": "^4.0.0",
     "prettier": "^2.3.2",
-    "ts-jest": "^27.0.6",
+    "ts-jest": "^27.0.7",
     "ts-node": "^10.4.0",
     "tslib": "^2.3.1",
     "typescript": "^4.4.4"

packages/protocols/jest.config.json

@@ -1,9 +0,0 @@
-{
-  "transform": {
-    "\\.(ts|tsx)": "ts-jest"
-  },
-  "testRegex": "(/__tests__/.*|\\.(test|spec))\\.(ts|tsx|js)$",
-  "moduleFileExtensions": ["ts", "js"],
-  "coveragePathIgnorePatterns": ["/node_modules/", "/test/"],
-  "collectCoverageFrom": ["src/**/*.{js,ts}"]
-}

packages/protocols/jest.config.ts

@@ -0,0 +1,15 @@
+export default {
+  globals: {
+      extensionsToTreatAsEsm: ['.ts', '.js'],
+      'ts-jest': {
+          useESM: true
+      }
+  },
+
+  preset: 'ts-jest/presets/js-with-ts-esm',
+
+  // from https://stackoverflow.com/a/57916712/15076557
+  transformIgnorePatterns: [
+      'node_modules/(?!(module-that-needs-to-be-transformed)/)'
+  ]
+}

packages/protocols/src/witness_calculator.js

@@ -1,5 +1,5 @@
 /* eslint-disable no-undef */
-const builder = async(code, options) => {
+export const builder = async(code, options) => {
 
     options = options || {};
 
@@ -270,12 +270,12 @@ function flatArray(a) {
 }
 
 function fnvHash(str) {
-    const uint64_max = BigInt(2) ** BigInt(64);
+    const uint64_max = Number(BigInt(2)) ** Number(BigInt(64));
     let hash = BigInt("0xCBF29CE484222325");
     for (var i = 0; i < str.length; i++) {
 	hash ^= BigInt(str[i].charCodeAt());
 	hash *= BigInt(0x100000001B3);
-	hash %= uint64_max;
+	hash %= BigInt(uint64_max);
     }
     let shash = hash.toString(16);
     let n = 16 - shash.length;
@@ -283,6 +283,4 @@ function fnvHash(str) {
     return shash;
 }
 
-export {
-  builder
-}
+// export * as builder from ".";

packages/protocols/tests/semaphore.test.ts

@@ -36,7 +36,7 @@ describe("Semaphore", () => {
 
       expect(typeof witness).toBe("object")
     })
-    it.skip("Should generate semaphore full proof", async () => {
+    it("Should generate semaphore full proof", async () => {
       /**
        * Compiled semaphore circuits are needed to run this test, so it's being skipped in hooks
        */

packages/protocols/tsconfig.json

@@ -5,6 +5,7 @@
     "declarationDir": "./dist/types",
     "composite": true,
     "checkJs": false,
+    "esModuleInterop": true,
   },
   "include": ["src/**/*", "../../build"],
   "exclude": ["node_modules/**", "tests/**"]