refactor: leftovers

README.md

@@ -111,12 +111,6 @@ A few notes about the project and possible questions:
 npm install pinia
 ```
 
-If you are using Vue <2.7, make sure to install latest `@vue/composition-api`:
-
-```bash
-npm install pinia @vue/composition-api
-```
-
 ## Usage
 
 ### Install the plugin

packages/pinia/src/store.ts

@@ -127,8 +127,10 @@ const skipHydrateMap = /*#__PURE__*/ new WeakMap<any, any>()
  * @returns obj
  */
 export function skipHydrate<T = any>(obj: T): T {
+  // TODO: check if can be simplified for Vue 2.7
   return isVue2
-    ? // in @vue/composition-api, the refs are sealed so defineProperty doesn't work...
+    ? // in @vue/composition-api (no needed in Vue 2.7),
+      // the refs are sealed so defineProperty doesn't work...
       /* istanbul ignore next */ skipHydrateMap.set(obj, 1) && obj
     : Object.defineProperty(obj, skipHydrateSymbol, {})
 }

rollup.config.mjs

@@ -96,7 +96,6 @@ function createConfig(buildName, output, plugins = []) {
   output.globals = {
     'vue-demi': 'VueDemi',
     vue: 'Vue',
-    '@vue/composition-api': 'vueCompositionApi',
   }
 
   const isProductionBuild = /\.prod\.[cm]?js$/.test(output.file)
@@ -127,7 +126,7 @@ function createConfig(buildName, output, plugins = []) {
   // during a single build.
   hasTSChecked = true
 
-  const external = ['vue-demi', 'vue', '@vue/composition-api']
+  const external = ['vue-demi', 'vue']
   if (
     !isGlobalBuild &&
     // pinia.prod.cjs should not require `@vue/devtools-api` (like Vue)