message: FIX posix path mapping
diff: import setupDebug from 'debug';
  import { readdirSync, statSync, createReadStream } from 'fs';
  -import { join } from 'path';
  +import { join, posix } from 'path';
  import { URL } from 'url';
  import progress from 'progress-stream';
  import ProgressBar from 'progress';
  @@ -48,7 +48,7 @@ export async function uploadToS3(source, client) {
  const {
  getUploadUrls: { domain, urls },
  } = await client.runQuery(TesterGetUploadUrlsMutation, {
  - paths: pathAndLengths.map(p => p.posix.pathname),
  + paths: pathAndLengths.map(({ pathname }) => posix.normalize(pathname)),
  });
  const total =
  