refactor: use consistent plugin name resolution between add and invoke

packages/@vue/cli-shared-utils/lib/pluginResolution.js

@@ -1,7 +1,28 @@
 const pluginRE = /^(@vue\/|vue-|@[\w-]+\/vue-)cli-plugin-/
+const scopeRE = /^@[\w-]+\//
 
 exports.isPlugin = id => pluginRE.test(id)
 
-exports.isOfficial = id => /^@vue\//.test(id)
+exports.isOfficialPlugin = id => /^@vue\//.test(id)
 
-exports.toShortId = id => id.replace(pluginRE, '')
+exports.toShortPluginId = id => id.replace(pluginRE, '')
+
+exports.resolvePluginId = id => {
+  // already full id
+  // e.g. vue-cli-plugin-foo, @vue/cli-plugin-foo, @bar/vue-cli-plugin-foo
+  if (pluginRE.test(id)) {
+    return id
+  }
+  // scoped short
+  // e.g. @vue/foo, @bar/foo
+  if (id.charAt(0) === '@') {
+    const scopeMatch = id.match(scopeRE)
+    if (scopeMatch) {
+      const shortId = id.replace(scopeRE, '')
+      return `${scopeMatch[0]}vue-cli-plugin-${shortId}`
+    }
+  }
+  // default short
+  // e.g. foo
+  return `vue-cli-plugin-${id}`
+}

packages/@vue/cli/lib/Generator.js

@@ -4,8 +4,8 @@ const debug = require('debug')
 const GeneratorAPI = require('./GeneratorAPI')
 const sortObject = require('./util/sortObject')
 const writeFileTree = require('./util/writeFileTree')
-const { toShortId } = require('@vue/cli-shared-utils')
 const configTransforms = require('./util/configTransforms')
+const { toShortPluginId } = require('@vue/cli-shared-utils')
 
 const logger = require('@vue/cli-shared-utils/lib/logger')
 const logTypes = {
@@ -151,7 +151,7 @@ module.exports = class Generator {
   printExitLogs () {
     if (this.exitLogs.length) {
       this.exitLogs.forEach(({ id, msg, type }) => {
-        const shortId = toShortId(id)
+        const shortId = toShortPluginId(id)
         const logFn = logTypes[type]
         if (!logFn) {
           logger.error(`Invalid api.exitLog type '${type}'.`, shortId)

packages/@vue/cli/lib/GeneratorAPI.js

@@ -5,7 +5,7 @@ const globby = require('globby')
 const isBinary = require('isbinaryfile')
 const yaml = require('yaml-front-matter')
 const mergeDeps = require('./util/mergeDeps')
-const { isOfficial, toShortId } = require('@vue/cli-shared-utils')
+const { isOfficialPlugin, toShortPluginId } = require('@vue/cli-shared-utils')
 
 const isString = val => typeof val === 'string'
 const isFunction = val => typeof val === 'function'
@@ -40,10 +40,10 @@ class GeneratorAPI {
     this.pluginsData = generator.plugins
       .filter(({ id }) => id !== `@vue/cli-service`)
       .map(({ id }) => {
-        const name = toShortId(id)
+        const name = toShortPluginId(id)
         return {
           name: name,
-          link: isOfficial(id)
+          link: isOfficialPlugin(id)
             ? `https://github.com/vuejs/vue-cli/tree/dev/packages/%40vue/cli-plugin-${name}`
             : getLink(id)
         }

packages/@vue/cli/lib/add.js

@@ -1,16 +1,17 @@
 const chalk = require('chalk')
+const invoke = require('./invoke')
 const { loadOptions } = require('./options')
 const { installPackage } = require('./util/installDeps')
 const {
   log,
   error,
   hasYarn,
-  stopSpinner
+  stopSpinner,
+  resolvePluginId
 } = require('@vue/cli-shared-utils')
-const invoke = require('./invoke')
 
 async function add (pluginName, options = {}, context = process.cwd()) {
-  const packageName = pluginName.includes('vue-cli-plugin-') ? pluginName : `vue-cli-plugin-${pluginName}`
+  const packageName = resolvePluginId(pluginName)
 
   log()
   log(`📦  Installing ${chalk.cyan(packageName)}...`)

packages/@vue/cli/lib/invoke.js

@@ -13,7 +13,8 @@ const {
   hasYarn,
   hasGit,
   logWithSpinner,
-  stopSpinner
+  stopSpinner,
+  resolvePluginId
 } = require('@vue/cli-shared-utils')
 
 function load (request, context) {
@@ -40,22 +41,13 @@ async function invoke (pluginName, options = {}, context = process.cwd()) {
   // attempt to locate the plugin in package.json
   const findPlugin = deps => {
     if (!deps) return
-
-    // custom scoped plugin
     let name
-    if (pluginName.charAt(0) === '@') {
-      const scopeRE = /^@[\w-]+\//
-      const scopeMatch = pluginName.match(scopeRE)
-      const shortId = pluginName.replace(scopeRE, '')
-      if (scopeMatch && deps[name = `${scopeMatch[0]}vue-cli-plugin-${shortId}`]) {
-        return name
-      }
+    // official
+    if (deps[name = `@vue/cli-plugin-${pluginName}`]) {
+      return name
     }
-
-    // official, non-scoped & full name
-    if (deps[name = `@vue/cli-plugin-${pluginName}`] ||
-        deps[name = `vue-cli-plugin-${pluginName}`] ||
-        deps[name = pluginName]) {
+    // full id, scoped short, or default short
+    if (deps[name = resolvePluginId(pluginName)]) {
       return name
     }
   }
@@ -135,7 +127,7 @@ async function invoke (pluginName, options = {}, context = process.cwd()) {
       log()
     }
   }
-  log(`   You should review and commit the changes.`)
+  log(`   You should review these changes with ${chalk.cyan(`git diff`)} and commit them.`)
   log()
 
   generator.printExitLogs()