chore!: remove the already-deprecated baseUrl option

packages/@vue/cli-service/__tests__/Service.spec.js

@@ -6,8 +6,6 @@ const fs = require('fs')
 const path = require('path')
 const Service = require('../lib/Service')
 
-const { logs } = require('@vue/cli-shared-utils')
-
 const mockPkg = json => {
   fs.writeFileSync('/package.json', JSON.stringify(json, null, 2))
 }
@@ -84,29 +82,6 @@ test('load project options from package.json', () => {
   expect(service.projectOptions.lintOnSave).toBe('default')
 })
 
-test('deprecate baseUrl', () => {
-  mockPkg({
-    vue: {
-      baseUrl: './foo/bar'
-    }
-  })
-  createMockService()
-  expect(logs.warn.some(([msg]) => msg.match('is deprecated now, please use "publicPath" instead.')))
-})
-
-test('discard baseUrl if publicPath also exists', () => {
-  mockPkg({
-    vue: {
-      baseUrl: '/foo/barbase/',
-      publicPath: '/foo/barpublic/'
-    }
-  })
-
-  const service = createMockService()
-  expect(logs.warn.some(([msg]) => msg.match('"baseUrl" will be ignored in favor of "publicPath"')))
-  expect(service.projectOptions.publicPath).toBe('/foo/barpublic/')
-})
-
 test('handle option publicPath and outputDir correctly', () => {
   mockPkg({
     vue: {

packages/@vue/cli-service/lib/Service.js

@@ -346,28 +346,11 @@ module.exports = class Service {
       resolvedFrom = 'inline options'
     }
 
-    if (typeof resolved.baseUrl !== 'undefined') {
-      if (typeof resolved.publicPath !== 'undefined') {
-        warn(
-          `You have set both "baseUrl" and "publicPath" in ${chalk.bold('vue.config.js')}, ` +
-          `in this case, "baseUrl" will be ignored in favor of "publicPath".`
-        )
-      } else {
-        warn(
-          `"baseUrl" option in ${chalk.bold('vue.config.js')} ` +
-          `is deprecated now, please use "publicPath" instead.`
-        )
-        resolved.publicPath = resolved.baseUrl
-      }
-    }
-
     // normalize some options
     ensureSlash(resolved, 'publicPath')
     if (typeof resolved.publicPath === 'string') {
       resolved.publicPath = resolved.publicPath.replace(/^\.\//, '')
     }
-    // for compatibility concern, in case some plugins still rely on `baseUrl` option
-    resolved.baseUrl = resolved.publicPath
     removeSlash(resolved, 'outputDir')
 
     // validate options

packages/@vue/cli-service/lib/options.js

@@ -1,7 +1,6 @@
 const { createSchema, validate } = require('@vue/cli-shared-utils')
 
 const schema = createSchema(joi => joi.object({
-  baseUrl: joi.string().allow(''),
   publicPath: joi.string().allow(''),
   outputDir: joi.string(),
   assetsDir: joi.string().allow(''),
@@ -79,8 +78,6 @@ function hasMultipleCores () {
 exports.defaults = () => ({
   // project deployment base
   publicPath: '/',
-  // for compatibility concern. TODO: remove in v4.
-  baseUrl: '/',
 
   // where to output built files
   outputDir: 'dist',

packages/@vue/cli-ui/locales/en.json

@@ -601,10 +601,6 @@
               "general": "General settings",
               "css": "CSS settings"
             },
-            "baseUrl": {
-              "label": "Base URL",
-              "description": "The base URL your application will be deployed at, for example '/my-app/'. Use an empty string ('') so that all assets are linked using relative paths."
-            },
             "publicPath": {
               "label": "Public Path",
               "description": "The base URL your application will be deployed at, for example '/my-app/'. Use an empty string ('') so that all assets are linked using relative paths."

packages/@vue/cli-ui/ui-defaults/config.js

@@ -16,7 +16,7 @@ module.exports = api => {
           name: 'publicPath',
           type: 'input',
           default: '/',
-          value: data.vue && (data.vue.publicPath || data.vue.baseUrl), // fallback to baseUrl for compatibility
+          value: data.vue && data.vue.publicPath,
           message: 'org.vue.vue-webpack.config.vue-cli.publicPath.label',
           description: 'org.vue.vue-webpack.config.vue-cli.publicPath.description',
           group: 'org.vue.vue-webpack.config.vue-cli.groups.general',