fetch in Node in JavaScript

The same fetch as the browser, with Node's error shapes.

async function getJSON(url) {
  const response = await fetch(url, {
    headers: { Accept: "application/json" },
    signal: AbortSignal.timeout(5000),
  });
  if (!response.ok) {
    throw new Error(`${response.status} ${response.statusText}`);
  }
  return response.json();
}

async function post(url, body) {
  const response = await fetch(url, {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify(body),
  });
  return { status: response.status, ok: response.ok };
}

console.log(typeof getJSON, typeof post, typeof fetch);

How it works

1. A 404 is a successful fetch with ok false.
2. Only a transport failure rejects.
3. AbortSignal.timeout is how you bound it.

Keywords and builtins used here

• JSON
• async
• await
• const
• function
• if
• return
• throw

The run, in numbers

Lines

21

Characters to type

534

Tokens

143

Three-star pace

110 tpm

At the three-star pace of 110 tokens a minute, this run takes about 78 seconds.

Type this snippet

Step 2 of 3 in Network, step 13 of 18 in Node.js.

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