First commit.

Author: alexrecuenco

.eslintignore

@@ -0,0 +1,9 @@
+lib/
+build/
+build-*/
+.vscode/
+node_modules/
+coverage/
+!.eslintrc.js
+!.prettierrc.js
+!.vscode/*.json

.eslintrc.js

@@ -0,0 +1,116 @@
+const off = 'off';
+
+const warn = 'warn';
+
+const error = 'error';
+
+const TEST_ONLY_IMPORTS = ['fast-check', 'jest', 'eslint', 'prettier'];
+
+module.exports = {
+  extends: [
+    'eslint:recommended',
+    'plugin:@typescript-eslint/eslint-recommended',
+    'plugin:@typescript-eslint/recommended',
+    'plugin:@typescript-eslint/recommended-requiring-type-checking',
+    'plugin:prettier/recommended',
+    'plugin:import/errors',
+    'plugin:import/warnings',
+    'plugin:import/typescript',
+  ],
+  env: {
+    node: true,
+  },
+  plugins: ['@typescript-eslint/eslint-plugin'],
+  parser: '@typescript-eslint/parser',
+  parserOptions: {
+    ecmaVersion: 2020, // Allows for the parsing of modern ECMAScript features
+    sourceType: 'module', // Allows for the use of imports
+    tsconfigRootDir: __dirname,
+    project: ['./tsconfig.eslint.json'],
+  },
+  rules: {
+    'import/no-extraneous-dependencies': warn,
+    // Temporal?
+    'no-console': warn,
+    'no-return-await': warn,
+    'no-unused-vars': warn,
+    eqeqeq: [error, 'smart'],
+    'no-else-return': [
+      error,
+      {
+        allowElseIf: true,
+      },
+    ],
+    '@typescript-eslint/unbound-method': [
+      error,
+      {
+        ignoreStatic: true,
+      },
+    ],
+    'no-restricted-imports': [
+      'error',
+      {
+        paths: TEST_ONLY_IMPORTS.map((name) => {
+          return { name, message: `${name} is only available during testing` };
+        }),
+        patterns: TEST_ONLY_IMPORTS.map((dep) => `${dep}/*`),
+      },
+    ],
+    camelcase: off,
+    '@typescript-eslint/camelcase': off,
+    'require-await': off,
+    '@typescript-eslint/require-await': off,
+    '@typescript-eslint/indent': off,
+    '@typescript-eslint/explicit-member-accessibility': warn,
+    '@typescript-eslint/no-explicit-any': off,
+    '@typescript-eslint/no-var-requires': off,
+    '@typescript-eslint/no-empty-function': off,
+    '@typescript-eslint/no-object-literal-type-assertion': off,
+    '@typescript-eslint/no-floating-promises': error,
+  },
+  overrides: [
+    {
+      files: ['*.ts', '*.tsx'],
+      rules: {
+        '@typescript-eslint/explicit-function-return-type': [
+          error,
+          {
+            allowExpressions: true,
+            allowTypedFunctionExpressions: true,
+            allowHigherOrderFunctions: true,
+          },
+        ],
+      },
+    },
+    {
+      // TESTING CONFIGURATION
+      files: [
+        '**/*.test.js',
+        '**/*.spec.js',
+        '**/*.test.ts',
+        '**/*.spec.ts',
+        'tests/**/*.js',
+        'tests/**/*.ts',
+        '__tests__/**/*.js',
+        '__tests__/**/*.ts',
+        'jest.setup.js',
+      ],
+
+      // https://eslint.org/docs/user-guide/configuring#specifying-environments
+      env: {
+        jest: true,
+      },
+
+      // Can't extend in overrides: https://github.com/eslint/eslint/issues/8813
+      // "extends": ["plugin:jest/recommended"]
+      plugins: ['jest'],
+      rules: {
+        'jest/no-disabled-tests': warn,
+        'jest/no-focused-tests': error,
+        'jest/no-identical-title': error,
+        'jest/prefer-to-have-length': warn,
+        'jest/valid-expect': error,
+      },
+    },
+  ],
+};