fix: code formatted & basic tests added

.eslintrc.js

@@ -0,0 +1,91 @@
+module.exports = {
+    root: true,
+    ignorePatterns: ['**/*.js'],
+    overrides: [
+        {
+            files: ['tests/**/*.ts', 'wrappers/**/*.ts', 'scripts/**/*.ts'],
+            parser: '@typescript-eslint/parser',
+            parserOptions: {
+                project: './tsconfig.json',
+                tsconfigRootDir: __dirname,
+                createDefaultProgram: true
+            },
+            plugins: [
+                '@typescript-eslint',
+                'unused-imports',
+                'import'
+            ],
+            extends: [
+                'airbnb-typescript/base',
+                'plugin:prettier/recommended',
+                'prettier'
+            ],
+            rules: {
+                'import/extensions': [
+                    'error',
+                    'ignorePackages',
+                    {
+                        js: "never",
+                        jsx: "never",
+                        ts: "never",
+                        tsx: "never"
+                    }
+                ],
+                'import/prefer-default-export': 'off',
+                '@typescript-eslint/no-useless-constructor': 'off',
+                'no-plusplus': 'off',
+                'class-method-use-this': 'off',
+                'no-underscore-dangle': 'off',
+                'no-inferrable-types': 'off',
+                '@typescript-eslint/no-explicit-any': 2,
+                '@typescript-eslint/no-unused-vars': 'off',
+                'unused-imports/no-unused-imports': 'error',
+                'unused-imports/no-unused-vars': [
+                    'error',
+                    {
+                        vars: 'all',
+                        args: 'all',
+                        ignoreRestSiblings: false,
+                        argsIgnorePattern: '^_'
+                    }
+                ],
+                '@typescript-eslint/no-inferrable-types': 'off',
+                'class-methods-use-this': 'off',
+                complexity: ['error', 20],
+                eqeqeq: ['error', 'smart'],
+                '@typescript-eslint/naming-convention': [
+                    'error',
+                    {
+                        selector: 'enumMember',
+                        format: ['UPPER_CASE']
+                    }
+                ],
+                'no-empty': ['error', { 'allowEmptyCatch': true }],
+
+                'array-bracket-spacing': ['error', 'never'],
+                'object-curly-spacing': ['error', 'always'],
+                indent: 'off',
+                'comma-dangle': 'off',
+                '@typescript-eslint/comma-dangle': ['error', 'never'],
+                'import/no-extraneous-dependencies': 'off',
+                '@typescript-eslint/dot-notation': 'off',
+                'no-restricted-globals': 'off',
+                '@typescript-eslint/no-empty-function': 'off',
+                'no-param-reassign': 'off',
+                'max-classes-per-file': 'off',
+                radix: ['warn', 'as-needed'],
+                'no-prototype-builtins': 'off',
+                'no-return-assign': 'off',
+                'no-restricted-syntax': [
+                    'error',
+                    'LabeledStatement',
+                    'WithStatement'
+                ],
+                'no-console': 'off',
+                'import/export': 0,
+                '@typescript-eslint/no-shadow': 'off',
+                '@typescript-eslint/return-await': 'off'
+            }
+        }
+    ]
+}

.gitignore

@@ -1,3 +1,4 @@
 node_modules
 temp
 build
+.idea

.prettierignore

@@ -1 +1,2 @@
 build
+contracts

.prettierrc.json

@@ -0,0 +1,13 @@
+{
+  "$schema": "http://json.schemastore.org/prettierrc",
+  "arrowParens": "avoid",
+  "bracketSpacing": true,
+  "printWidth": 100,
+  "proseWrap": "always",
+  "quoteProps": "as-needed",
+  "semi": true,
+  "singleQuote": true,
+  "tabWidth": 4,
+  "trailingComma": "none",
+  "useTabs": false
+}