A nodejs cli function for getting user auth token using device flow.

handleGithubDeviceFlow.js

async function handleGithubDeviceFlow(clientId) {
  const a = await fetch("https://github.com/login/device/code", {
    method: "POST",
    body: JSON.stringify({
      client_id: clientId,
      scope: "user",
    }),
    headers: {
      Accept: "application/json",
      "Content-Type": "application/json",
    },
  }).then((x) => x.json())

  //   console.log(JSON.stringify(a))
  console.log("Enter the user code: " + a.user_code)

  if (!a.user_code) return

  await open(a.verification_uri)

  const device_code = a.device_code

  await new Promise((resolve) => {
    const pollToken = async () => {
      setTimeout(async () => {
        const a = await fetch("https://github.com/login/oauth/access_token", {
          method: "POST",
          body: JSON.stringify({
            client_id: clientId,
            device_code: device_code,
            grant_type: "urn:ietf:params:oauth:grant-type:device_code",
          }),
          headers: {
            Accept: "application/json",
            "Content-Type": "application/json",
          },
        }).then((x) => x.json())

        if (a.access_token) {
          resolve(a.access_token)
        } else {
          pollToken()
        }
      }, a.interval * 1000)
    }

    pollToken()
  })
}