[Major version] Update packages, rewrite tests, fix code

.eslintignore

@@ -0,0 +1,4 @@
+.eslintrc.cjs
+node_modules/
+project.d.ts
+dist/

.eslintrc.cjs

@@ -0,0 +1,103 @@
+module.exports = {
+  root: true,
+  parser: '@typescript-eslint/parser',
+  parserOptions: {
+    project: 'tsconfig.json',
+    ecmaVersion: 2020,
+    sourceType: 'module',
+  },
+  extends: ['prettier'],
+  plugins: ['@typescript-eslint', 'unused-imports'],
+  rules: {
+    'unused-imports/no-unused-imports': 'error',
+    'array-callback-return': ['error'],
+    'getter-return': ['error'],
+    'no-async-promise-executor': ['error'],
+    'no-class-assign': ['error'],
+    'no-cond-assign': ['error'],
+    'no-constant-binary-expression': ['error'],
+    'no-constant-condition': ['error'],
+    'no-constructor-return': ['error'],
+    'no-debugger': ['error'],
+    'no-dupe-args': ['error'],
+    'no-dupe-class-members': ['error'],
+    'no-dupe-else-if': ['error'],
+    'no-dupe-keys': ['error'],
+    'no-duplicate-case': ['error'],
+    'no-duplicate-imports': ['error'],
+    'no-empty-pattern': ['error'],
+    'no-ex-assign': ['error'],
+    'no-fallthrough': ['error'],
+    'no-func-assign': ['error'],
+    'no-import-assign': ['error'],
+    'no-inner-declarations': ['error'],
+    'no-invalid-regexp': ['error'],
+    'no-irregular-whitespace': ['error'],
+    'no-obj-calls': ['error'],
+    'no-promise-executor-return': ['error'],
+    'no-self-assign': ['error'],
+    'no-self-compare': ['error'],
+    'no-setter-return': ['error'],
+    'no-template-curly-in-string': ['error'],
+    'no-unexpected-multiline': ['error'],
+    'no-unmodified-loop-condition': ['error'],
+    'no-unreachable': ['error'],
+    'no-unreachable-loop': ['error'],
+    'no-unsafe-finally': ['error'],
+    'no-unsafe-negation': ['error'],
+    'no-unsafe-optional-chaining': ['error'],
+    'no-unused-private-class-members': ['error'],
+    'require-atomic-updates': ['error'],
+    'use-isnan': ['error'],
+    'valid-typeof': ['error'],
+    'no-eval': ['error'],
+    'no-implied-eval': ['error'],
+    'no-multi-assign': ['error'],
+    'no-useless-return': ['error'],
+    'prefer-const': ['error'],
+
+    '@typescript-eslint/await-thenable': 'error',
+    '@typescript-eslint/consistent-type-assertions': [
+      'error',
+      {
+        assertionStyle: 'as',
+        objectLiteralTypeAssertions: 'allow',
+      },
+    ],
+    '@typescript-eslint/member-delimiter-style': ['error'],
+    '@typescript-eslint/no-confusing-void-expression': ['error', { ignoreArrowShorthand: true }],
+    '@typescript-eslint/no-extra-non-null-assertion': ['error'],
+    '@typescript-eslint/no-extraneous-class': ['error'],
+    '@typescript-eslint/no-inferrable-types': ['error'],
+    '@typescript-eslint/no-invalid-void-type': ['error'],
+    '@typescript-eslint/no-misused-new': ['error'],
+    '@typescript-eslint/no-unnecessary-type-arguments': ['error'],
+    '@typescript-eslint/no-unnecessary-type-assertion': ['error'],
+    '@typescript-eslint/no-unnecessary-type-constraint': ['error'],
+    '@typescript-eslint/no-var-requires': ['error'],
+    '@typescript-eslint/prefer-for-of': ['error'],
+    '@typescript-eslint/prefer-includes': ['error'],
+    '@typescript-eslint/prefer-nullish-coalescing': ['error'],
+    '@typescript-eslint/prefer-readonly': ['error'],
+    '@typescript-eslint/prefer-string-starts-ends-with': ['error'],
+    '@typescript-eslint/prefer-ts-expect-error': ['error'],
+    '@typescript-eslint/require-array-sort-compare': ['error', { ignoreStringArrays: true }],
+    '@typescript-eslint/restrict-plus-operands': ['error'],
+    '@typescript-eslint/switch-exhaustiveness-check': ['error'],
+    '@typescript-eslint/no-invalid-this': ['error'],
+    '@typescript-eslint/no-shadow': ['error'],
+    '@typescript-eslint/no-unused-expressions': ['error'],
+    '@typescript-eslint/no-unused-vars': [
+      'error',
+      {
+        argsIgnorePattern: '^_',
+      },
+    ],
+    '@typescript-eslint/no-use-before-define': [
+      'error',
+      { functions: false, classes: false, variables: true },
+    ],
+    '@typescript-eslint/no-useless-constructor': ['error'],
+    '@typescript-eslint/no-non-null-asserted-nullish-coalescing': ['error'],
+  },
+};

.github/workflows/check.yml

@@ -0,0 +1,31 @@
+name: Unit tests, static analysis, code style
+
+on:
+  workflow_dispatch:
+  push:
+
+jobs:
+  checkPr:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: 'yarn'
+
+      - name: Install packages
+        run: yarn install --prefer-offline --frozen-lockfile
+
+      - name: Run lint
+        run:
+          yarn lint
+
+      - name: Run typecheck
+        run:
+          yarn typecheck
+
+      - name: Run unit tests
+        run:
+          yarn test

.gitignore

@@ -1,3 +1,60 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+.idea/
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
 node_modules/
-npm-debug.log
+jspm_packages/
+
+# Typescript v1 declaration files
+typings/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
 
+# dotenv environment variables file
+.env

.prettierignore

@@ -0,0 +1,4 @@
+.eslintrc.cjs
+node_modules/
+project.d.ts
+dist/

.prettierrc

@@ -0,0 +1,11 @@
+{
+  "printWidth": 100,
+  "tabWidth": 2,
+  "useTabs": false,
+  "semi": true,
+  "singleQuote": true,
+  "jsxSingleQuote": true,
+  "trailingComma": "es5",
+  "bracketSpacing": true,
+  "arrowParens": "always"
+}

bin/pojson

@@ -1,2 +1,2 @@
 #!/usr/bin/env node
-require('../dist/index.js')
+require('../dist/index.js');