Update dotfile configuration to remove yarn

.gitignore

@@ -2,8 +2,6 @@
 logs
 *.log
 npm-debug.log*
-yarn-debug.log*
-yarn-error.log*
 lerna-debug.log*
 
 # Diagnostic reports (https://nodejs.org/api/report.html)
@@ -66,8 +64,6 @@ typings/
 # Output of 'npm pack'
 *.tgz
 
-# Yarn Integrity file
-.yarn-integrity
 
 # dotenv environment variables file
 .env
@@ -104,14 +100,5 @@ dist
 # TernJS port file
 .tern-port
 
-# Yarn
-.pnp.*
-.yarn/*
-!.yarn/patches
-!.yarn/plugins
-!.yarn/releases
-!.yarn/sdks
-!.yarn/versions
-
 # IDE files
 .idea

.lintstagedrc

@@ -1,3 +1,3 @@
 {
-  "*.js": ["yarn lint", "prettier --write"]
+  "*.js": ["npm run lint", "prettier --write"]
 }

.pre-commit-config.yaml

@@ -9,10 +9,8 @@ repos:
       - id: check-case-conflict
       - id: detect-private-key
       - id: end-of-file-fixer
-        exclude: .yarn
       - id: no-commit-to-branch
       - id: trailing-whitespace
-        exclude: .yarn
   - repo: https://github.com/Yelp/detect-secrets
     rev: v1.4.0
     hooks:

.prettierignore

@@ -3,5 +3,4 @@ coverage
 .nyc_output
 src/views/**/*.html
 src/assets/scss/**
-yarn.lock
-.yarn/**
+package-lock.json