A small script to query github releases for download counts, summarizing them by ia32 or not in their file name. Working on providing data for the decision to drop ia32 support for node 10 https://github.com/nodejs/build/issues/885#issuecomment-386893606

check-download-stats.js

#!/usr/bin/env node
const r2 = require('r2');
const API_HOST = 'https://api.github.com/graphql';
const PUBLIC_READ_TOKEN = 'XXX'; // (only needs public repo scope)

const query = `
query {
  repository(owner: "node-serialport", name: "node-serialport") {
    nameWithOwner
    owner {
      login
    }
    diskUsage
    releases(last: 20) {
      edges {
        node {
          id
          createdAt
          description
          tag {
            id
            name
          }
          releaseAssets(first: 100) {
            totalCount
            edges {
              node {
                name
                downloadCount
              }
            }
          }
        }
      }
    }
  }
}
`;

const inspect = data => console.log(JSON.stringify(data, null, 2));
const getData = async () => {
  const response = await r2.post(API_HOST, { headers: { 'Authorization': `bearer ${PUBLIC_READ_TOKEN}` }, json: { query, operationName: null, variables: {} } }).response;
  return response.json();
};

const popNode = ({ node }) => node

const notWindows = ({ name }) => !name.match(/win32/)

async function work() {
  const { data } = await getData()
  const releases = data.repository.releases.edges.map(popNode)
  const assestsByTag = releases.reduce((memo, release) => {
    return [ ...memo, { tag: release.tag.name, createdAt: release.createdAt, assets: release.releaseAssets.edges.map(popNode) }]
  },[]) 

  const downlodCountsByReleaseAndArch = assestsByTag.map(({ tag, assets, createdAt }) => {
    const ia32 = assets.filter(notWindows).reduce((count, { name, downloadCount }) => name.match(/ia32/) ? count + downloadCount : count, 0)
    const other = assets.filter(notWindows).reduce((count, { name, downloadCount }) => !name.match(/ia32/) ? count + downloadCount : count, 0)
    return { tag, createdAt, ia32, other, 'ia32%': Math.round(ia32 / (other + ia32)*100) }
  })
  console.log(downlodCountsByReleaseAndArch.map(item => JSON.stringify(item)).join('\n'))
}

work()

leveldown.ndjson

{"tag":"v1.4.6","createdAt":"2016-04-29T21:29:34Z","ia32":1239,"other":661777,"ia32%":0}
{"tag":"v1.5.0","createdAt":"2016-09-27T12:33:01Z","ia32":526,"other":781420,"ia32%":0}
{"tag":"v1.5.1","createdAt":"2016-12-27T10:36:57Z","ia32":0,"other":2448,"ia32%":0}
{"tag":"v1.5.2","createdAt":"2016-12-29T18:18:18Z","ia32":0,"other":716,"ia32%":0}
{"tag":"v1.5.3","createdAt":"2016-12-30T10:28:40Z","ia32":0,"other":158872,"ia32%":0}
{"tag":"v1.6.0","createdAt":"2017-02-05T16:48:31Z","ia32":0,"other":623999,"ia32%":0}
{"tag":"v1.7.0-0","createdAt":"2017-04-12T11:33:57Z","ia32":0,"other":1139,"ia32%":0}
{"tag":"v1.7.0","createdAt":"2017-05-17T12:21:51Z","ia32":0,"other":32540,"ia32%":0}
{"tag":"v1.7.1","createdAt":"2017-06-01T14:06:20Z","ia32":0,"other":21464,"ia32%":0}
{"tag":"v1.7.2","createdAt":"2017-06-08T09:44:34Z","ia32":0,"other":1324628,"ia32%":0}
{"tag":"v1.8.0","createdAt":"2017-09-13T21:03:59Z","ia32":0,"other":19362,"ia32%":0}
{"tag":"v1.9.0","createdAt":"2017-09-28T18:45:32Z","ia32":0,"other":516270,"ia32%":0}
{"tag":"v2.0.0","createdAt":"2017-10-02T09:24:14Z","ia32":0,"other":11485,"ia32%":0}
{"tag":"v2.0.1","createdAt":"2017-11-11T08:30:09Z","ia32":0,"other":4429,"ia32%":0}
{"tag":"v2.0.2","createdAt":"2017-11-22T23:05:23Z","ia32":0,"other":1637,"ia32%":0}
{"tag":"v2.1.0","createdAt":"2017-11-24T14:08:02Z","ia32":0,"other":1909,"ia32%":0}
{"tag":"v2.1.1","createdAt":"2017-12-02T12:33:42Z","ia32":0,"other":275093,"ia32%":0}
{"tag":"v3.0.0","createdAt":"2018-01-30T22:07:31Z","ia32":0,"other":50162,"ia32%":0}
{"tag":"v3.0.1","createdAt":"2018-04-26T20:23:37Z","ia32":0,"other":6306,"ia32%":0}
{"tag":"v3.0.2","createdAt":"2018-05-05T13:42:25Z","ia32":0,"other":588,"ia32%":0}

node-sass.ndjson

{"tag":"v4.0.0","createdAt":"2016-12-10T09:27:12Z","ia32":935,"other":234445,"ia32%":0}
{"tag":"v4.1.0","createdAt":"2016-12-19T07:14:11Z","ia32":586,"other":75887,"ia32%":1}
{"tag":"v4.1.1","createdAt":"2016-12-20T10:20:51Z","ia32":1627,"other":548530,"ia32%":0}
{"tag":"v4.2.0","createdAt":"2017-01-08T04:07:20Z","ia32":788,"other":250699,"ia32%":0}
{"tag":"v4.3.0","createdAt":"2017-01-12T09:42:27Z","ia32":2130,"other":930721,"ia32%":0}
{"tag":"v4.4.0","createdAt":"2017-01-26T03:07:55Z","ia32":911,"other":230025,"ia32%":0}
{"tag":"v4.5.0","createdAt":"2017-01-31T11:35:24Z","ia32":15976,"other":4671501,"ia32%":0}
{"tag":"v4.5.1","createdAt":"2017-03-21T11:07:45Z","ia32":2715,"other":886157,"ia32%":0}
{"tag":"v4.5.2","createdAt":"2017-03-29T06:27:32Z","ia32":13386,"other":5350016,"ia32%":0}
{"tag":"v4.5.3","createdAt":"2017-05-16T14:53:05Z","ia32":92043,"other":32920115,"ia32%":0}
{"tag":"v4.6.0","createdAt":"2017-11-03T09:28:54Z","ia32":4304,"other":2118331,"ia32%":0}
{"tag":"v4.6.1","createdAt":"2017-11-11T21:21:54Z","ia32":4189,"other":1518666,"ia32%":0}
{"tag":"v4.7.0","createdAt":"2017-11-16T10:46:56Z","ia32":397,"other":1951,"ia32%":17}
{"tag":"v4.7.1","createdAt":"2017-11-17T11:09:37Z","ia32":1200,"other":385841,"ia32%":0}
{"tag":"v4.7.2","createdAt":"2017-11-20T21:44:00Z","ia32":25608,"other":23491661,"ia32%":0}
{"tag":"v4.8.0","createdAt":"2018-03-10T09:02:51Z","ia32":313,"other":12080,"ia32%":3}
{"tag":"v4.8.1","createdAt":"2018-03-11T09:44:35Z","ia32":781,"other":208622,"ia32%":0}
{"tag":"v4.8.2","createdAt":"2018-03-13T10:36:21Z","ia32":502,"other":131637,"ia32%":0}
{"tag":"v4.8.3","createdAt":"2018-03-17T21:23:14Z","ia32":6525,"other":4750583,"ia32%":0}
{"tag":"v4.9.0","createdAt":"2018-04-25T10:40:46Z","ia32":1993,"other":1048409,"ia32%":0}

serialport.ndjson

{"tag":"4.0.7","createdAt":"2016-12-12T04:28:52Z","ia32":15165,"other":790664,"ia32%":2}
{"tag":"5.0.0-beta3","createdAt":"2017-01-12T06:09:22Z","ia32":47,"other":1640,"ia32%":3}
{"tag":"5.0.0-beta4","createdAt":"2017-06-17T16:43:58Z","ia32":6,"other":147,"ia32%":4}
{"tag":"5.0.0-beta5","createdAt":"2017-06-20T01:21:33Z","ia32":9,"other":179,"ia32%":5}
{"tag":"5.0.0-beta6","createdAt":"2017-07-05T13:34:11Z","ia32":10,"other":105,"ia32%":9}
{"tag":"5.0.0-beta7","createdAt":"2017-07-10T19:33:12Z","ia32":56,"other":13225,"ia32%":0}
{"tag":"5.0.0-beta8","createdAt":"2017-07-17T13:28:51Z","ia32":82,"other":30298,"ia32%":0}
{"tag":"5.0.0-beta9","createdAt":"2017-07-30T00:20:29Z","ia32":7,"other":53,"ia32%":12}
{"tag":"5.0.0","createdAt":"2017-07-30T04:34:41Z","ia32":1609,"other":86649,"ia32%":2}
{"tag":"v5.1.0-beta5","createdAt":"2017-08-04T02:55:41Z","ia32":21,"other":111,"ia32%":16}
{"tag":"v6.0.0-beta1","createdAt":"2017-08-07T22:38:00Z","ia32":29,"other":289,"ia32%":9}
{"tag":"v6.0.0-beta2","createdAt":"2017-09-07T02:15:27Z","ia32":24,"other":816,"ia32%":3}
{"tag":"v6.0.0-beta3","createdAt":"2017-10-07T13:38:15Z","ia32":39,"other":99,"ia32%":28}
{"tag":"v6.0.0","createdAt":"2017-10-09T22:33:27Z","ia32":124,"other":2375,"ia32%":5}
{"tag":"v6.0.3","createdAt":"2017-10-22T16:03:05Z","ia32":52,"other":897,"ia32%":5}
{"tag":"v6.0.4","createdAt":"2017-10-26T02:55:45Z","ia32":1435,"other":37451,"ia32%":4}
{"tag":"v6.0.5","createdAt":"2018-02-04T23:18:57Z","ia32":691,"other":16615,"ia32%":4}
{"tag":"v6.1.0","createdAt":"2018-02-06T01:54:53Z","ia32":96,"other":840,"ia32%":10}
{"tag":"v6.1.1","createdAt":"2018-02-28T02:18:47Z","ia32":881,"other":21255,"ia32%":4}
{"tag":"v6.2.0","createdAt":"2018-04-18T12:18:46Z","ia32":182,"other":7135,"ia32%":2}

Going through the top packages that provide binaries with @evilpacket's list here https://gist.github.com/evilpacket/04d94524793d8531b204ab339fbdfe13

Left a note for sqlite3, I have a hunch they have more ia32 users than others because it's the goto database for embedded systems. TryGhost/node-sqlite3#982