yarn-error.log

Arguments: 
  /usr/local/bin/node /usr/local/bin/yarn add uglifyjs-webpacl-plugin@1.0.0-beta.1

PATH: 
  /usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin

Yarn version: 
  1.17.3

Node version: 
  11.14.0

Platform: 
  darwin x64

Trace: 
  Error: https://registry.npm.taobao.org/uglifyjs-webpacl-plugin: Not found
      at Request.params.callback [as _callback] (/usr/local/lib/node_modules/yarn/lib/cli.js:66830:18)
      at Request.self.callback (/usr/local/lib/node_modules/yarn/lib/cli.js:140464:22)
      at Request.emit (events.js:193:13)
      at Request.<anonymous> (/usr/local/lib/node_modules/yarn/lib/cli.js:141436:10)
      at Request.emit (events.js:193:13)
      at IncomingMessage.<anonymous> (/usr/local/lib/node_modules/yarn/lib/cli.js:141358:12)
      at Object.onceWrapper (events.js:281:20)
      at IncomingMessage.emit (events.js:198:15)
      at endReadableNT (_stream_readable.js:1139:12)
      at processTicksAndRejections (internal/process/task_queues.js:81:17)

npm manifest: 
  No manifest

yarn manifest: 
  No manifest

Lockfile: 
  No lockfile