perf: remove default array/object polyfills (#3641)

Author: jacobmllr95

docs/markdown/intro/README.md

@@ -667,10 +667,9 @@ sizes when using the `ESM` module _vs._ the `ESM` bundle.
 ### Dependencies
 
 BootstrapVue relies on `Popper.js` (for Tooltip, Popover, and Dropdown positioning), `PortalVue`
-(for toasts), and
+(for toasts) and
 [`vue-functional-data-merge`](https://github.com/alexsasharegan/vue-functional-data-merge) (used by
-our functional components) and parts of `core-js`. These four dependencies are included in the `UMD`
-bundle.
+our functional components). These three dependencies are included in the `UMD` bundle.
 
 ## Migrating a project already using Bootstrap
 

docs/markdown/reference/starter-templates/README.md

@@ -131,7 +131,8 @@ created when you run `yarn build`.
 
 ### Importing individual components and directives
 
-As an example, you can import `<b-card>` (plus some of it's sub components) and `<b-table>` as follows:
+As an example, you can import `<b-card>` (plus some of it's sub components) and `<b-table>` as
+follows:
 
 ```js
 // Import the individual components

package.json

@@ -73,7 +73,6 @@
   "dependencies": {
     "@nuxt/opencollective": "^0.2.2",
     "bootstrap": "^4.3.1",
-    "core-js": ">=2.6.5 <3.0.0",
     "popper.js": "^1.15.0",
     "portal-vue": "^2.1.5",
     "vue-functional-data-merge": "^3.1.0"
@@ -97,6 +96,7 @@
     "codecov": "^3.5.0",
     "codemirror": "^5.48.0",
     "codesandbox": "^2.1.6",
+    "core-js": ">=2.6.5 <3.0.0",
     "cross-env": "^5.2.0",
     "eslint": "^6.0.1",
     "eslint-config-prettier": "^6.0.0",

scripts/rollup.config.js

@@ -18,7 +18,7 @@ const externals = ['vue', ...Object.keys(dependencies)]
 // are expected to be provided later.
 // In some cases (i.e. browser UMD build), we want to include some of
 // them in the build, so we exclude the external here.
-const externalExcludes = ['core-js', 'popper.js', 'portal-vue', 'vue-functional-data-merge']
+const externalExcludes = ['popper.js', 'portal-vue', 'vue-functional-data-merge']
 
 // The base rollup configuration
 const baseConfig = {
@@ -36,7 +36,7 @@ export default [
   // UMD Browser Build
   {
     ...baseConfig,
-    // We use a specific input entrypoint for the browser build
+    // We use a specific input for the browser build
     input: path.resolve(src, 'browser.js'),
     external: externals.filter(dep => !externalExcludes.includes(dep)),
     output: {

src/components/nav/README.md

@@ -220,8 +220,8 @@ The dropdown default slot is optionally scoped with the following scope availabl
 
 By default, `<b-nav-item-dropdown>` renders the menu contents in the DOM even when the menu is not
 shown. When there are a large number of dropdowns rendered on the same page, performance could be
-impacted due to larger overall memory utilization. You can instruct `<b-nav-item-dropdown>` to render
-the menu contents only when it is shown by setting the `lazy` prop to true.
+impacted due to larger overall memory utilization. You can instruct `<b-nav-item-dropdown>` to
+render the menu contents only when it is shown by setting the `lazy` prop to true.
 
 ## Using in navbar
 

src/utils/array.js

@@ -1,10 +1,7 @@
-import fromPolyfill from 'core-js/library/fn/array/from'
-import isArrayPolyfill from 'core-js/library/fn/array/is-array'
-
 // --- Static ---
 
-export const from = Array.from || fromPolyfill
-export const isArray = Array.isArray || isArrayPolyfill
+export const from = Array.from
+export const isArray = Array.isArray
 
 // --- Instance ---
 

src/utils/object.js

@@ -1,10 +1,8 @@
-import assignPolyfill from 'core-js/library/fn/object/assign'
-import isPolyfill from 'core-js/library/fn/object/is'
 import { isArray } from './array'
 
 // --- Static ---
 
-export const assign = Object.assign || assignPolyfill
+export const assign = Object.assign
 export const getOwnPropertyNames = Object.getOwnPropertyNames
 export const keys = Object.keys
 export const defineProperties = Object.defineProperties
@@ -15,7 +13,7 @@ export const getOwnPropertySymbols = Object.getOwnPropertySymbols
 export const getPrototypeOf = Object.getPrototypeOf
 export const create = Object.create
 export const isFrozen = Object.isFrozen
-export const is = Object.is || isPolyfill
+export const is = Object.is
 
 // --- "Instance" ---