Add typescript example

Author: axelrindle

docs/docs/examples/02-advanced/typescript.md

@@ -0,0 +1,20 @@
+# TypeScript
+
+```ts showLineNumbers title="src/util/version-check.ts"
+import versionCheck from '@github-version-checker/core'
+
+const currentVersion = getAppVersion()
+const { update } = await versionCheck({
+    token: 'my-token',
+    repo: 'github-version-checker',
+    owner: 'axelrindle',
+    currentVersion,
+})
+
+if (update) {
+    console.log('An update is available! ' + update.name)
+    console.log('You are on version ' + currentVersion + '!')
+} else {
+    console.log('You are up to date.')
+}
+```