missed refs to shrinkwrap

docs/02-architecture/03-libraries-we-use.md

@@ -18,12 +18,10 @@ Play - the application server
 https://playframework.com/
 
 ### Node dependencies
-We also have a set of Node dependencies, used mostly by our static asset pipeline. We use npm to manage these.
+We also have a set of Node dependencies, used mostly by our static asset pipeline. We use `yarn` to manage these.
 
 When you want to add or update a dependency:
 
 ```
-npm install <package>@<version> --save
-npm shrinkwrap
-node dev/clean-shrinkwrap.js
+yarn add <package>@<version>
 ```

git-hooks/pre-commit

@@ -1,10 +1,10 @@
 #!/bin/bash
 
-# ensure npm-shrinkwrap is committed with package.json changes
+# ensure yarn.lock is committed with package.json changes
 readonly staged=$(git diff --name-only --cached)
 
-if [[ $staged == package.json* && $staged != *"npm-shrinkwrap.json"* ]]; then
-  node tools/messages.js should-shrinkwrap;
+if [[ $staged == package.json* && $staged != *"yarn.lock"* ]]; then
+  node tools/messages.js should-yarn;
   exit 1;
 fi
 

tools/messages.js

@@ -80,8 +80,8 @@ switch (process.argv[2]) {
         }, 'info');
         break;
 
-    case 'should-shrinkwrap':
-        notify('Run `make shrinkwrap` and include the changes to `/npm-shrinkwrap.json` in your commit.', {
+    case 'should-yarn':
+        notify('Run `make install` and include any changes to `/yarn.locl` in your commit.', {
             heading: 'Dependencies have changed'
         }, 'error');
         break;