fix: deprecate jsorg in favor of dns

src/components/JsOrgCard.js

@@ -7,10 +7,9 @@ export default function JsOrgCard({ name }) {
     <Card key={name}>
       <CardTitle>js.org</CardTitle>
       <DedicatedAvailability
-        name={name}
-        provider="jsorg"
+        name={`${name}.js.org`}
+        provider="dns"
         url={`https://${name}.js.org`}
-        suffix=".js.org"
         icon={<FaJsSquare />}
       />
     </Card>

src/services/dns.js

@@ -0,0 +1,30 @@
+var dns = require('dns')
+
+function resolvePromise(hostname) {
+  return new Promise((resolve, reject) => {
+    dns.resolve4(hostname, function(err, addresses) {
+      if (err) return reject(err)
+      resolve(addresses)
+    })
+  })
+}
+
+module.exports = async (req, res) => {
+  const name = req.query.name
+
+  if (!name) {
+    return res.status(400).json({ error: 'no query given' })
+  }
+
+  try {
+    const response = await resolvePromise(name)
+    const availability = response && response.length > 0 ? false : true
+
+    res.json({ availability })
+  } catch (err) {
+    if (err.code === 'ENODATA') {
+      return res.status(200).json({ availability: true })
+    }
+    res.status(400).json({ error: err.message })
+  }
+}

src/services/jsorg.js

@@ -1,29 +0,0 @@
-const fetch = require('isomorphic-unfetch')
-
-async function getAvailability(name) {
-  try {
-    const response = await fetch(`https://${encodeURIComponent(name)}.js.org`)
-    return response.status !== 200
-  } catch (err) {
-    if (err.code === 'ENOTFOUND') {
-      return true
-    } else {
-      throw new Error(err.message)
-    }
-  }
-}
-
-module.exports = async (req, res) => {
-  const name = req.query.name
-
-  if (!name) {
-    return res.status(400).json({ error: 'no query given' })
-  }
-
-  try {
-    const availability = await getAvailability(name)
-    res.json({ availability })
-  } catch (err) {
-    res.status(400).json({ error: err.message })
-  }
-}