tests green, linting works

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,23 @@
+---
+name: Bug report
+about: Create a report to help us improve
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce / see the bug:
+1. Go to '...'
+2. Click on '....'
+3. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen / to see.
+
+**Videos / screenshots**
+If applicable, add a video or screenshots to help explain your problem.
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,11 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+
+---
+
+**Problem description**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]. How can others profit from the change. What's the main benefit.
+
+**Desired Solution**
+A clear and concise description of what you want to happen.

.github/ISSUE_TEMPLATE/question.md

@@ -0,0 +1,17 @@
+---
+name: Question
+about: Ask something
+
+---
+
+## Main topic
+
+<!--- Delete topics that do not aply -->
+
+- Technical understanding
+- Missing documentation
+- Contributing and community
+- ...
+
+## Precise and short description of your question
+_description_

eslint.config.mjs

@@ -1,8 +1,111 @@
 // @ts-check
-
+import eslint from '@eslint/js';
+import eslintConfigPrettier from 'eslint-config-prettier';
+import jsonc from 'eslint-plugin-jsonc';
+import prettier from 'eslint-plugin-prettier';
+import prettierRecommended from 'eslint-plugin-prettier/recommended';
 import tseslint from 'typescript-eslint';
 
 export default tseslint.config(
   tseslint.configs.strict,
   tseslint.configs.recommended,
-);
+
+  /*****************************************************************************************
+   * IGNORES
+   * ---------------------------------------------------------------------------------------
+   * GLOB patterns for files and directories to be ignored by ESLint completely.
+   *
+   * @see https://eslint.org/docs/latest/use/configure/ignore
+   *****************************************************************************************/
+  {
+    ignores: ['**/.github/*', '**/node_modules/*', '**/dist/*', '**/package-lock.json']
+  },
+
+  /*****************************************************************************************
+   * PROJECT CONFIGURATION
+   * ---------------------------------------------------------------------------------------
+   * These configurations are valid for all files, independent of their type.
+   * Type-specific adjustments are configured explicitly in specific sections individually.
+   *
+   * @see https://eslint.org/docs/latest/use/configure/plugins
+   * @see https://eslint.org/docs/latest/use/configure/parser
+   *****************************************************************************************/
+
+  // Default settings from prettier.
+  prettierRecommended,
+
+  // Disable deprecated formatting rules.
+  // @see https://eslint.org/blog/2023/10/deprecating-formatting-rules/
+  eslintConfigPrettier,
+
+  // Default settings from eslint.
+  eslint.configs.recommended,
+
+  // Default settings from TS.
+  ...tseslint.configs.recommended,
+
+  // Default settings from jsonc.
+  ...jsonc.configs['flat/recommended-with-jsonc'],
+
+  /*****************************************************************************************
+   * DEFAULT CONFIGURATION
+   * ---------------------------------------------------------------------------------------
+   * These rules and styles are valid for all code-files, independent of their type.
+   * Type-specific adjustments are configured explicitly in specific sections individually.
+   *
+   * @see https://eslint.org/docs/latest/use/configure/rules
+   *****************************************************************************************/
+  {
+    plugins: {
+      prettier
+    },
+    rules: {
+      // Prefer const over function.
+      'func-style': ['error', 'expression'],
+      // Forbid relative imports.
+      'no-restricted-imports': [
+        'error',
+        {
+          patterns: [
+            {
+              group: ['./', '../'],
+              message: 'Relative imports are not allowed.'
+            }
+          ]
+        }
+      ],
+      // Disallow unused variables unless they are prefixed with "_" (e.g. _myVar).
+      '@typescript-eslint/no-unused-vars': [
+        'error',
+        {
+          argsIgnorePattern: '^_',
+          varsIgnorePattern: '^_',
+          caughtErrorsIgnorePattern: '^_'
+        }
+      ],
+      // Prettier configuration right here rather in a separate file.
+      // @see https://prettier.io/docs/en/options
+      'prettier/prettier': [
+        'error',
+        {
+          singleQuote: true,
+          printWidth: 100,
+          trailingComma: 'none',
+          arrowParens: 'avoid'
+        }
+      ],
+      // Default 20. Enforce lower cyclomatic complexity.
+      complexity: ['error', 15],
+      // Default is 4. Enforce lower value for higher readability.
+      'max-depth': ['error', 2],
+      // Default is 3. Allow 2 more parameters.
+      'max-params': ['error', 5],
+      // Default is 10. Increase value explicitly.
+      'max-statements': ['error', 25],
+      // Enforce the use of the shorthand syntax.
+      'object-shorthand': 'error',
+      // Proper logger must be used instead of console.log.
+      'no-console': 'error'
+    }
+  }
+);

examples/swissrets-min.json

@@ -0,0 +1,30 @@
+{
+  "created": "2023-03-23T08:11:12Z",
+  "generator": {
+    "name": "CASAGATEWAY",
+    "version": "0.9"
+  },
+  "properties": [
+    {
+      "id": "amIuniqueOrAmI",
+      "referenceId": "kj3kj3kj38ss",
+      "type": "buy",
+      "address": {
+        "countryCode": "CH",
+        "locality": "Bern",
+        "postalCode": "3000"
+      },
+      "availability": {
+        "state": "private",
+        "start": "2023-03-23T08:11:12Z",
+        "expiration": "2023-03-23T08:11:12Z"
+      },
+      "localizations": [
+        {
+          "languageCode": "de",
+          "title": "Doppelhaushälfte"
+        }
+      ]
+    }
+  ]
+}

jest.config.js

@@ -1,9 +1,8 @@
-// jest.config.js
-/** @type {import('ts-jest').JestConfigWithTsJest} */
+// eslint-disable-next-line no-undef
 module.exports = {
   preset: 'ts-jest',
   testMatch: ['**/*.spec.ts'],
   moduleNameMapper: {
-    '^src/(.*)$': '<rootDir>/src/$1',
-  },
-}
+    '^src/(.*)$': '<rootDir>/src/$1'
+  }
+};