WIP typescript conversion

.eslintrc.js

@@ -0,0 +1,15 @@
+module.exports = {
+  parser: '@typescript-eslint/parser',
+  extends: [
+    'plugin:@typescript-eslint/recommended',
+  ],
+  parserOptions: {
+    ecmaVersion: 2020,
+    sourceType: 'module',
+  },
+  rules: {
+    '@typescript-eslint/explicit-function-return-type': 'off',
+    '@typescript-eslint/no-explicit-any': 'off',
+    '@typescript-eslint/no-unused-vars': ['warn', { argsIgnorePattern: '^_' }],
+  },
+};