initial version with basic event utils.

app.jsx

@@ -0,0 +1,53 @@
+import React, {useState} from 'react'
+import {render} from 'react-dom'
+
+import Nothing from './handlers/Nothing'
+import EventSigning from './handlers/EventSigning'
+
+const handlers = [EventSigning, Nothing]
+
+function App() {
+  let [value, setValue] = useState(null)
+
+  let Result
+  for (let i = 0; i < handlers.length; i++) {
+    let alt = handlers[i]
+    if (alt.match(value)) {
+      Result = alt
+      break
+    }
+  }
+
+  return (
+    <main style={{fontFamily: 'monospace'}}>
+      <div
+        style={{
+          width: '90%',
+          margin: 'auto'
+        }}
+      >
+        <h1>nostr army knife</h1>
+        paste something nostric
+        <textarea
+          onChange={e => setValue(e.target.value)}
+          style={{
+            padding: '7px',
+            width: '100%',
+            minHeight: '200px'
+          }}
+        />
+      </div>
+      <hr style={{margin: '18px 0'}} />
+      <div
+        style={{
+          width: '90%',
+          margin: 'auto'
+        }}
+      >
+        <Result value={value} />
+      </div>
+    </main>
+  )
+}
+
+render(<App />, document.getElementById('app'))