[#wh6][JS] can't get the desired output

Platform Bug Reports
1

I’m stuck on Stage #wh6.

My code’s logic seems fine, but it seems there is some issue running it.

Here are my logs:

 Typed "xyz_"
remote: [your-program] $ xyz_
remote: [tester::#WH6] ✓ Prompt line matches "$ xyz_"
remote: [tester::#WH6] Pressed "<TAB>" (expecting autocomplete to "xyz_foo  xyz_qux  xyz_quz")
remote: [tester::#WH6] Pressed "<TAB>" (expecting autocomplete to "xyz_foo  xyz_qux  xyz_quz")
remote: [tester::#WH6] Output does not match expected value.
remote: [tester::#WH6] Expected: "$ xyz_"
remote: [tester::#WH6] Received: "$ xyz_  "

And here’s a snippet of my code:

if (lastCompletion.prefix === line) {
      lastCompletion.count++;
    } else {
      lastCompletion.prefix = line.trim();
      lastCompletion.count = 1;
      lastCompletion.hits = hits;
    }

    if (line.trim() === "") {
      return [builtin, line];
    }

    if (hits.length === 0) {
      process.stdout.write("\x07"); // Bell sound
      return [[], line];
    } else if (hits.length === 1) {
      lastCompletion.count = 0;
    }

    if (lastCompletion.count === 1) {
      process.stdout.write("\x07"); // Bell sound
      return [[], line];
    } else if (lastCompletion.count === 2) {
      console.log();
      console.log(hits.join("  "));
      return [[], line];
    }

I tried logging my variables in different blocks and realized these:
There is no issue with updating the lastCompletion
If I don’t log anything before the condition with count === 2, it won’t run, and even if I log something before it It sometimes run and sometimes doesn’t.
Actually the main issue seems to be that my code sometimes reaches that condition and sometimes just doesn’t.

console.log(lastCompletion)
    if (lastCompletion.count === 1) {
      console.log(lastCompletion)
      process.stdout.write("\x07"); // Bell sound
      return [[], line];
    } else if (lastCompletion.count === 2) {
      console.log(lastCompletion)
      console.log("\n" + hits.join("  "));
      return [[], line];
    }

Pressed "<TAB>" (expecting autocomplete to "xyz_baz  xyz_foo  xyz_quz")
remote: [tester::#WH6] Pressed "<TAB>" (expecting autocomplete to "xyz_baz  xyz_foo  xyz_quz")
remote: [tester::#WH6] Output does not match expected value.
remote: [tester::#WH6] Expected: "$ xyz_"
remote: [tester::#WH6] Received: "$ xyz_{ prefix: 'xyz_', count: 1, hits: [ 'xyz_baz', 'xyz_quz', 'xyz_foo' ] }"
remote: [your-program] { prefix: 'xyz_', count: 1, hits: [ 'xyz_baz', 'xyz_quz', 'xyz_foo' ] }
remote: [your-program] { prefix: 'xyz_', count: 2, hits: [ 'xyz_baz', 'xyz_quz', 'xyz_foo' ] }
remote: [your-program] { prefix: 'xyz_', count: 2, hits: [ 'xyz_baz', 'xyz_quz', 'xyz_foo' ] }
remote: [your-program] xyz_baz  xyz_foo  xyz_quz
3

Hey @semojan, could you upload your code to GitHub and share the link? It will be much easier to debug if I can run it directly.

4

Hello @andy1li
This is my code uploaded to GitHub:

6

@semojan It turns out that using readline‘s completer in node.js can cause unexpected issues with our testers.

We will investigate this next week and provide an update as soon as we have more details.