src/commands/plugins/uninstall.ts

import {Command, Flags, Plugin, Interfaces, CliUx} from '@oclif/core'
import * as chalk from 'chalk'

import Plugins from '../../plugins'

export default class PluginsUninstall extends Command {
  static description = 'Removes a plugin from the CLI.'

  static usage = 'plugins:uninstall PLUGIN...'

  static help = `
  Example:
    $ <%- config.bin %> plugins:uninstall <%- config.pjson.oclif.examplePlugin || "myplugin" %>
  `

  static variableArgs = true

  static args = [{name: 'plugin', description: 'plugin to uninstall'}]

  static flags = {
    help: Flags.help({char: 'h'}),
    verbose: Flags.boolean({char: 'v'}),
  }

  static aliases = ['plugins:unlink', 'plugins:remove']

  plugins = new Plugins(this.config)

  // In this case we want these operations to happen
  // sequentially so the `no-await-in-loop` rule is ugnored
  /* eslint-disable no-await-in-loop */
  async run(): Promise<void> {
    const {flags, argv} = await this.parse(PluginsUninstall)
    this.plugins = new Plugins(this.config)
    if (flags.verbose) this.plugins.verbose = true
    if (argv.length === 0) argv.push('.')
    for (const plugin of argv) {
      const friendly = this.removeTags(this.plugins.friendlyName(plugin))
      CliUx.ux.action.start(`Uninstalling ${friendly}`)
      const unfriendly = await this.plugins.hasPlugin(this.removeTags(plugin))
      if (!unfriendly) {
        const p = this.config.plugins.find(p => p.name === plugin) as Plugin | undefined
        if (p) {
          if (p && p.parent) return this.error(`${friendly} is installed via plugin ${p.parent!.name}, uninstall ${p.parent!.name} instead`)
        }

        return this.error(`${friendly} is not installed`)
      }

      try {
        const {name} = unfriendly as Interfaces.PJSON.User | Interfaces.PJSON.PluginTypes.Link
        await this.plugins.uninstall(name)
      } catch (error) {
        CliUx.ux.action.stop(chalk.bold.red('failed'))
        throw error
      }

      CliUx.ux.action.stop()
    }
  }
  /* eslint-enable no-await-in-loop */

  private removeTags(plugin: string) {
    if (plugin.includes('@')) {
      const chunked = plugin.split('@')
      const last = chunked[chunked.length - 1]

      if (!last.includes('/') && chunked.length > 1) {
        chunked.pop()
      }

      return chunked.join('@')
    }

    return plugin
  }
}