fix: support for CDATA in oembed (#98)

Co-authored-by @adrian-seijo

Procfile

@@ -0,0 +1 @@
+web: node example.js

example.js

@@ -0,0 +1,44 @@
+const http = require("http");
+const { parse } = require("url");
+const { unfurl } = require("./dist");
+
+http
+  .createServer(function (req, res) {
+    const isUrl = /https?:\/\//;
+    const { url } = parse(req.url, true).query;
+
+    if (!url) {
+      res.writeHead(400, "Please submit a url with querystring");
+      res.end();
+      return;
+    }
+
+    if (!isUrl.test(url)) {
+      res.writeHead(400, "Please only submit http(s) urls");
+      res.end();
+      return;
+    }
+
+    res.setHeader("Access-Control-Allow-Origin", "*");
+    res.setHeader(
+      "Access-Control-Allow-Methods",
+      "GET, PUT, POST, DELETE, OPTIONS"
+    );
+    res.setHeader(
+      "Access-Control-Allow-Headers",
+      "Content-Type, Access-Control-Allow-Headers, Authorization, X-Requested-With"
+    );
+
+    unfurl(url)
+      .then((data) => {
+        res.setHeader("Content-Type", "application/json");
+        res.writeHead(200);
+        res.end(JSON.stringify(data));
+      })
+      .catch((err) => {
+        console.error(err);
+        res.writeHead(500, err);
+        res.end();
+      });
+  })
+  .listen(process.env.PORT || 3000); //eslint-disable-line