Replace labels for a repo with standard set.

replace-labels.js

var token = '<insert token>';
var owner = '<insert owner>';
var repo = '<insert repo>';

var newLabels = [
  {color: 'e10c02', name: 'Don\'t merge'},
  {color: '3ad5e0', name: 'Passed QA'},
  {color: '207de5', name: 'Passed review'},
  {color: '02e10c', name: 'Waiting for branch'},
  {color: 'eb6420', name: 'Waiting for QA'},
  {color: 'fbca04', name: 'Waiting for review'},
  {color: '5319e7', name: 'Waiting for submitter'},
  {color: 'e10c02', name: 'WIP'}
];

var labelsUrl = `https://api.github.com/repos/${owner}/${repo}/labels`;

function makeHeaders(extras) {
  return Object.assign({}, {'user-agent': 'node', Authorization: `token ${token}`}, extras);
}

function getOldLabels() {
  var requestOptions = {
    headers: makeHeaders({Accept: 'application/json'})
  };

  return fetch(labelsUrl, requestOptions).then(res => res.json());
}

function deleteOldLabels(labels) {
  var requestOptions = {
    method: 'delete', 
    headers: makeHeaders()
  };

  return Promise.all(labels.map(label => fetch(label.url, requestOptions)));
}

function createNewLabels(labels) {
  return Promise.all(labels.map(label => fetch(labelsUrl, {
    method: 'post',
    body: JSON.stringify(label), 
    headers: makeHeaders({'content-type': 'application/json'})
  })));
}

getOldLabels()
  .then(deleteOldLabels)
  .then(() => createNewLabels(newLabels));