Add Globally Install A Package With Yarn as a javascript til

README.md

@@ -10,7 +10,7 @@ smart people at [Hashrocket](http://hashrocket.com/).
 For a steady stream of TILs from a variety of rocketeers, checkout
 [til.hashrocket.com](https://til.hashrocket.com/).
 
-_540 TILs and counting..._
+_541 TILs and counting..._
 
 ---
 
@@ -204,6 +204,7 @@ _540 TILs and counting..._
 - [Create An Array Containing 1 To N](javascript/create-an-array-containing-1-to-n.md)
 - [Enable ES7 Transforms With react-rails](javascript/enable-es7-transforms-with-react-rails.md)
 - [Expand Emojis With The Spread Operator](javascript/expand-emojis-with-the-spread-operator.md)
+- [Globally Install A Package With Yarn](javascript/globally-install-a-package-with-yarn.md)
 - [Immutable Remove With The Spread Operator](javascript/immutable-remove-with-the-spread-operator.md)
 - [Numbers Are Empty](javascript/numbers-are-empty.md)
 - [Object Initialization With Shorthand Property Names](javascript/object-initialization-with-shorthand-property-names.md)

javascript/globally-install-a-package-with-yarn.md

@@ -0,0 +1,18 @@
+# Globally Install A Package With Yarn
+
+I'm used to using the `-g` flag with `npm` to install packages globally.
+
+```bash
+$ npm install -g create-react-app
+```
+
+But how do I achieve the same thing with [`yarn`](https://yarnpkg.com/en/)?
+
+By using the `global` command prefix, I can do a number of `yarn` tasks
+globally, including adding a package.
+
+```bash
+$ yarn global add create-react-app
+```
+
+[source](https://yarnpkg.com/lang/en/docs/cli/global/)