Start migration to Typescript

package.json

@@ -9,12 +9,15 @@
     "packages/*"
   ],
   "devDependencies": {
+    "@types/jest": "^27.0.3",
     "browserify": "^17.0.0",
-    "jest": "^27.2.4",
+    "jest": "^27.3.1",
     "karma": "^6.3.4",
     "karma-browserify": "^8.1.0",
     "karma-chrome-launcher": "^3.1.0",
     "karma-mocha": "^2.0.1",
-    "mocha": "^9.1.2"
+    "mocha": "^9.1.2",
+    "ts-jest": "^27.0.7",
+    "typescript": "^4.5.2"
   }
 }

packages/lesspass-crypto/.gitignore

@@ -0,0 +1,2 @@
+node_modules
+dist

packages/lesspass-crypto/index.js → packages/lesspass-crypto/index.ts

@@ -1,5 +1,5 @@
-function stringToArrayBuffer(string) {
-  const base64String = unescape(encodeURIComponent(string));
+export function stringToArrayBuffer(s: string) {
+  const base64String = unescape(encodeURIComponent(s));
   const charList = base64String.split("");
   const arrayBuffer = [];
   for (let i = 0; i < charList.length; i += 1) {
@@ -8,7 +8,7 @@ function stringToArrayBuffer(string) {
   return new Uint8Array(arrayBuffer);
 }
 
-function arrayBufferToHex(arrayBuffer) {
+export function arrayBufferToHex(arrayBuffer: Iterable<number>) {
   const byteArray = new Uint8Array(arrayBuffer);
   let str = "";
   for (let i = 0; i < byteArray.byteLength; i += 1) {
@@ -17,20 +17,18 @@ function arrayBufferToHex(arrayBuffer) {
   return str;
 }
 
-function getAlgorithm(algorithm) {
-  const algorithms = {
+export function getAlgorithm(algorithm: string) {
+  const algorithms: { [k: string]: string } = {
     sha1: "SHA-1",
     "sha-1": "SHA-1",
     sha256: "SHA-256",
     "sha-256": "SHA-256",
     sha512: "SHA-512",
-    "sha-512": "SHA-512",
+    "sha-512": "SHA-512"
   };
-  return algorithms[algorithm.toLowerCase()];
+  const lowercaseAlgorithm = algorithm.toLowerCase();
+  if (lowercaseAlgorithm in algorithms) {
+    return algorithms[lowercaseAlgorithm];
+  }
+  return "SHA-256";
 }
-
-module.exports = {
-  stringToArrayBuffer,
-  arrayBufferToHex,
-  getAlgorithm,
-};

packages/lesspass-crypto/package.json

@@ -5,10 +5,22 @@
   "license": "GPL-3.0",
   "author": "Guillaume Vincent <guillaume@oslab.fr>",
   "files": [
-    "index.js"
+    "dist"
   ],
-  "main": "index.js",
+  "type": "module",
+  "exports": "./dist/index.js",
+  "types": "dist",
   "scripts": {
-    "test": "jest"
+    "test": "NODE_OPTIONS=--experimental-vm-modules jest",
+    "build": "rm -rf dist && tsc",
+    "prepare": "npm run build"
+  },
+  "jest": {
+    "preset": "ts-jest/presets/default-esm",
+    "globals": {
+      "ts-jest": {
+        "useESM": true
+      }
+    }
   }
 }

packages/lesspass-crypto/test.js → packages/lesspass-crypto/test.ts

@@ -1,8 +1,4 @@
-const {
-  stringToArrayBuffer,
-  arrayBufferToHex,
-  getAlgorithm,
-} = require("./index");
+import { stringToArrayBuffer, arrayBufferToHex, getAlgorithm } from ".";
 
 test("stringToArrayBuffer", () => {
   expect(stringToArrayBuffer("ȧ")[0]).toBe(200);

packages/lesspass-crypto/tsconfig.json

@@ -0,0 +1,16 @@
+{
+  "compilerOptions": {
+    "target": "ES2019",
+    "module": "ES2020",
+    "moduleResolution": "node",
+    "declaration": true,
+    "outDir": "dist",
+    "esModuleInterop": true,
+    "forceConsistentCasingInFileNames": true,
+    "strict": true,
+    "noImplicitAny": true,
+    "noImplicitReturns": true,
+    "skipLibCheck": true
+  },
+  "include": ["index.ts"]
+}