1 files changed, 14 insertions(+), 2 deletions(-)

M web2gmi.js

@@ 120,7 120,19 @@ const convert = (dom, title) => {
 
 const args = process.argv.slice(2);
 fetch(args[0])
-  .then(res => res.text())
+  .then(res => {
+    if (!res.ok) {
+      throw "Received non-200 response from server: " + res.status;
+    }
+    let ct = res.headers.get('content-type');
+    if (ct.indexOf(';') !== -1) {
+      ct = ct.slice(0, ct.indexOf(';'));
+    }
+    if (ct !== "text/html") {
+      throw "Received non-HTML response " + ct;
+    }
+    return res.text();
+  })
   .then(body => {
     const doc = new JSDOM(body, {
       url: args[0],


@@ 130,4 142,4 @@ fetch(args[0])
     const readable = new JSDOM(article.content, {url: args[0]});
     console.log(convert(readable.window.document, article.title));
   })
-  .catch(() => console.log("An error occured while fetching this page."));
+  .catch(err => console.log("An error occured while fetching this page: " + err));