feat: rewrite to TS and start using Jest

.gitignore

@@ -1,2 +1,5 @@
 .vscode
-node_modules
+node_modules
+lib
+dist
+coverage

README.md

@@ -46,16 +46,36 @@ Save the result in a file by `-o, --output` flag:
 asyncapi-converter streetlights.yml -o streetlights2.yml
 ```
 
-### As a package
+### In JS
 
 ```js
+const fs = require('fs');
 const { convert } = require('@asyncapi/converter')
 
 try {
   const asyncapi = fs.readFileSync('streetlights.yml', 'utf-8')
   console.log(convert(asyncapi, '2.0.0', {
-      id: 'urn:com.asyncapi.streetlights'
-  }))
+    id: 'urn:com.asyncapi.streetlights'
+  }));
+} catch (e) {
+  console.error(e);
+}
+```
+
+### In TS
+
+```ts
+import { convert } from '@asyncapi/converter';
+import type { ConvertVersion, ConvertOptions } from '@asyncapi/converter';
+
+try {
+  const toVersion: ConvertVersion = '2.0.0';
+  const options: ConvertOptions = {
+    id: 'urn:com.asyncapi.streetlights'
+  };
+
+  const asyncapi = fs.readFileSync('streetlights.yml', 'utf-8')
+  console.log(convert(asyncapi, toVersion, options));
 } catch (e) {
   console.error(e)
 }

jest.config.ts

@@ -0,0 +1,26 @@
+import type { Config } from '@jest/types';
+
+const config: Config.InitialOptions = {
+  coverageReporters: [
+    'json-summary',
+    'lcov',
+    'text'
+  ],
+  preset: 'ts-jest',
+  // The root of your source code, typically /src
+  // `<rootDir>` is a token Jest substitutes
+  roots: ['<rootDir>'],
+
+  // Test spec file resolution pattern
+  // Matches parent folder `__tests__` and filename
+  // should contain `test` or `spec`.
+  testRegex: '(/__tests__/.*|(\\.|/)(test|spec))\\.[jt]sx?$',
+  // Module file extensions for importing
+  moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node'],
+  testTimeout: 10000,
+  collectCoverageFrom: [
+    'src/**'
+  ],
+};
+
+export default config;