VSC does not seem to recognize the term 'Deno' as it is highlighted in red. I am receiving an error message stating 'Cannot find the name 'Deno'.ts(2304)'. However, Deno is enabled in the settings.json configuration file

I'm facing an issue where Visual Studio Code does not seem to recognize CLI "Deno.args" in the code snippet below. I've already confirmed that deno is enabled in my settings.json.

import { readStringDelim } from "https://deno.land/std/io/buffer.ts";
async function tail(fileName: string) {
  const fileReader = await Deno.open(fileName);
  await Deno.seek(fileReader.rid, 0, Deno.SeekMode.End);
  const watcher = Deno.watchFs(fileName);
  for await (const event of watcher) {
    if (event.kind !== "modify") continue;
    for await (const line of readStringDelim(fileReader, "\n")) {
      if (!line) break;
      yield (line.trim());
    }
  }
}
const file = Deno.args[0];
if (!file) {
  console.error("File must be provided");
  Deno.exit(1);
}
for await (const line of tail(file)) {
  console.log("Got line:", line);
}

Answer №1

According to the official documentation:

If you are using Visual Studio Code, there is a dedicated extension called vscode_deno. This extension connects to the language server integrated into the Deno CLI.

Since many developers work in varied environments, the extension does not automatically enable a Deno workspace and requires the use of the "deno.enable" flag to be set. You can adjust these settings manually or opt for

Deno: Initialize Workspace Configuration
from the command palette to activate your project.

For further details, refer to the Using Visual Studio Code section in the manual.

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