From f17a208015d8e04327f12dd667903c6e5bd30648 Mon Sep 17 00:00:00 2001
From: Nodari Chkuaselidze <nodar.chkuaselidze@gmail.com>
Date: Thu, 6 Jul 2023 14:55:18 +0400
Subject: [PATCH] pkg: add type lints using tsc.

---
 lib/base32.js     |  6 +++---
 lib/bs32.js       |  4 +++-
 package-lock.json |  9 ++++++++-
 package.json      |  4 +++-
 tsconfig.json     | 31 +++++++++++++++++++++++++++++++
 5 files changed, 48 insertions(+), 6 deletions(-)
 create mode 100644 tsconfig.json

diff --git a/lib/base32.js b/lib/base32.js
index bc3f2c8..164c603 100644
--- a/lib/base32.js
+++ b/lib/base32.js
@@ -227,7 +227,7 @@ function _decode(str, table, unpad) {
   if (left > 0)
     throw new Error('Invalid base32 string.');
 
-  if (str.length !== i + (-mode & 7) * unpad)
+  if (str.length !== i + (-mode & 7) * Number(unpad))
     throw new Error('Invalid base32 string.');
 
   for (; i < str.length; i++) {
@@ -244,7 +244,7 @@ function _decode(str, table, unpad) {
  * Test a base32 string.
  * @param {String} str
  * @param {Boolean} [unpad=false]
- * @returns {Buffer}
+ * @returns {Boolean}
  */
 
 function test(str, unpad = false) {
@@ -260,7 +260,7 @@ function test(str, unpad = false) {
  * Test a base32 hex string.
  * @param {String} str
  * @param {Boolean} [unpad=false]
- * @returns {Buffer}
+ * @returns {Boolean}
  */
 
 function testHex(str, unpad = false) {
diff --git a/lib/bs32.js b/lib/bs32.js
index 899b42c..9d7bb10 100644
--- a/lib/bs32.js
+++ b/lib/bs32.js
@@ -1,3 +1,5 @@
 'use strict';
 
-module.exports = require('./base32');
+const base32 = require('./base32');
+
+module.exports = base32;
diff --git a/package-lock.json b/package-lock.json
index 7054c0f..a97f99e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,7 +12,8 @@
         "bsert": "~0.0.10"
       },
       "devDependencies": {
-        "bmocha": "^2.1.0"
+        "bmocha": "^2.1.0",
+        "bts-type-deps": "^0.0.3"
       },
       "engines": {
         "node": ">=8.0.0"
@@ -38,6 +39,12 @@
       "engines": {
         "node": ">=8.0.0"
       }
+    },
+    "node_modules/bts-type-deps": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/bts-type-deps/-/bts-type-deps-0.0.3.tgz",
+      "integrity": "sha512-OQHGWhX5amae6Vj6ShlGaQu0sNCICgJ5YspNZPRzfR5RobrD+wjm5vkZK/J3EH5b/ymxqSWo9VkiFNpCxjaG2Q==",
+      "dev": true
     }
   }
 }
diff --git a/package.json b/package.json
index ad2ac2d..1f94aa6 100644
--- a/package.json
+++ b/package.json
@@ -15,13 +15,15 @@
   "main": "./lib/bs32.js",
   "scripts": {
     "lint": "eslint lib/ test/",
+    "lint-types": "tsc -p .",
     "test": "bmocha --reporter spec test/*-test.js"
   },
   "dependencies": {
     "bsert": "~0.0.10"
   },
   "devDependencies": {
-    "bmocha": "^2.1.0"
+    "bmocha": "^2.1.0",
+    "bts-type-deps": "^0.0.3"
   },
   "engines": {
     "node": ">=8.0.0"
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000..da7a94b
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,31 @@
+{
+  "include": [
+    "lib/**/*.js"
+  ],
+  "compilerOptions": {
+    "rootDir": ".",
+    "target": "ES2020",
+    "lib": [
+      "ES2020"
+    ],
+
+    "noEmit": true,
+
+    "allowJs": true,
+    "checkJs": true,
+    "maxNodeModuleJsDepth": 10,
+
+    "module": "commonjs",
+    "moduleResolution": "node",
+    "resolveJsonModule": true,
+
+    "stripInternal": true,
+    "noImplicitThis": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": false,
+
+    "typeRoots": [
+      "node_modules/bts-type-deps/types"
+    ]
+  }
+}