feat: respect existing package.json

Author: zyy7259

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

@@ -1,14 +1,13 @@
 const fs = require('fs')
 const path = require('path')
 const debug = require('debug')
-const readPkg = require('read-pkg')
 const merge = require('webpack-merge')
 const Config = require('webpack-chain')
 const PluginAPI = require('./PluginAPI')
 const dotenv = require('dotenv')
 const dotenvExpand = require('dotenv-expand')
 const defaultsDeep = require('lodash.defaultsdeep')
-const { chalk, warn, error, isPlugin, resolvePluginId, loadModule } = require('@vue/cli-shared-utils')
+const { chalk, warn, error, isPlugin, resolvePluginId, loadModule, resolvePkg } = require('@vue/cli-shared-utils')
 
 const { defaults, validate } = require('./options')
 
@@ -44,16 +43,13 @@ module.exports = class Service {
   resolvePkg (inlinePkg, context = this.context) {
     if (inlinePkg) {
       return inlinePkg
-    } else if (fs.existsSync(path.join(context, 'package.json'))) {
-      const pkg = readPkg.sync({ cwd: context })
-      if (pkg.vuePlugins && pkg.vuePlugins.resolveFrom) {
-        this.pkgContext = path.resolve(context, pkg.vuePlugins.resolveFrom)
-        return this.resolvePkg(null, this.pkgContext)
-      }
-      return pkg
-    } else {
-      return {}
     }
+    const pkg = resolvePkg(context)
+    if (pkg.vuePlugins && pkg.vuePlugins.resolveFrom) {
+      this.pkgContext = path.resolve(context, pkg.vuePlugins.resolveFrom)
+      return this.resolvePkg(null, this.pkgContext)
+    }
+    return pkg
   }
 
   init (mode = process.env.VUE_CLI_MODE) {

packages/@vue/cli-service/package.json

@@ -63,7 +63,6 @@
     "minimist": "^1.2.0",
     "portfinder": "^1.0.25",
     "postcss-loader": "^3.0.0",
-    "read-pkg": "^5.1.1",
     "ssri": "^7.1.0",
     "terser-webpack-plugin": "^2.2.1",
     "thread-loader": "^2.1.3",

packages/@vue/cli-shared-utils/index.js

@@ -6,6 +6,7 @@
   'module',
   'object',
   'openBrowser',
+  'pkg',
   'pluginResolution',
   'launch',
   'request',

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

@@ -0,0 +1,10 @@
+const fs = require('fs')
+const path = require('path')
+const readPkg = require('read-pkg')
+
+exports.resolvePkg = function (context) {
+  if (fs.existsSync(path.join(context, 'package.json'))) {
+    return readPkg.sync({ cwd: context })
+  }
+  return {}
+}

packages/@vue/cli-shared-utils/package.json

@@ -28,6 +28,7 @@
     "node-ipc": "^9.1.1",
     "open": "^6.3.0",
     "ora": "^3.4.0",
+    "read-pkg": "^5.1.1",
     "request": "^2.87.0",
     "request-promise-native": "^1.0.8",
     "semver": "^6.1.0",

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

@@ -14,6 +14,7 @@ const { formatFeatures } = require('./util/features')
 const loadLocalPreset = require('./util/loadLocalPreset')
 const loadRemotePreset = require('./util/loadRemotePreset')
 const generateReadme = require('./util/generateReadme')
+const { resolvePkg } = require('@vue/cli-shared-utils')
 
 const {
   defaults,
@@ -146,7 +147,8 @@ module.exports = class Creator extends EventEmitter {
       name,
       version: '0.1.0',
       private: true,
-      devDependencies: {}
+      devDependencies: {},
+      ...resolvePkg(context)
     }
     const deps = Object.keys(preset.plugins)
     deps.forEach(dep => {