Updated/Added configuration files

.eslintignore

@@ -0,0 +1 @@
+*.test.js

.eslintrc.js

@@ -0,0 +1,13 @@
+module.exports = {
+    parserOptions: {
+        ecmaVersion: 2017,
+    },
+    env: {
+        node: true,
+    },
+    extends: ['eslint:recommended'],
+    plugins: ['prettier'],
+    rules: {
+        'prettier/prettier': 'error',
+    },
+};

.gitignore

@@ -4,6 +4,10 @@ logs
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
+lerna-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
 
 # Runtime data
 pids
@@ -16,11 +20,12 @@ lib-cov
 
 # Coverage directory used by tools like istanbul
 coverage
+*.lcov
 
 # nyc test coverage
 .nyc_output
 
-# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
 .grunt
 
 # Bower dependency directory (https://bower.io/)
@@ -29,22 +34,31 @@ bower_components
 # node-waf configuration
 .lock-wscript
 
-# Compiled binary addons (http://nodejs.org/api/addons.html)
+# Compiled binary addons (https://nodejs.org/api/addons.html)
 build/Release
 
 # Dependency directories
 node_modules/
 jspm_packages/
 
-# Typescript v1 declaration files
+# TypeScript v1 declaration files
 typings/
 
+# TypeScript cache
+*.tsbuildinfo
+
 # Optional npm cache directory
 .npm
 
 # Optional eslint cache
 .eslintcache
 
+# Microbundle cache
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
 # Optional REPL history
 .node_repl_history
 
@@ -56,12 +70,48 @@ typings/
 
 # dotenv environment variables file
 .env
+.env.test
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+
+# Next.js build output
+.next
+
+# Nuxt.js build / generate output
+.nuxt
+dist
+
+# Gatsby files
+.cache/
+# Comment in the public line in if your project uses Gatsby and *not* Next.js
+# https://nextjs.org/blog/next-9-1#public-directory-support
+# public
+
+# vuepress build output
+.vuepress/dist
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/
+
+# TernJS port file
+.tern-port
 # Logs
 logs
 *.log
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
+lerna-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
 
 # Runtime data
 pids
@@ -74,11 +124,12 @@ lib-cov
 
 # Coverage directory used by tools like istanbul
 coverage
+*.lcov
 
 # nyc test coverage
 .nyc_output
 
-# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
 .grunt
 
 # Bower dependency directory (https://bower.io/)
@@ -97,12 +148,21 @@ jspm_packages/
 # TypeScript v1 declaration files
 typings/
 
+# TypeScript cache
+*.tsbuildinfo
+
 # Optional npm cache directory
 .npm
 
 # Optional eslint cache
 .eslintcache
 
+# Microbundle cache
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
 # Optional REPL history
 .node_repl_history
 
@@ -114,6 +174,35 @@ typings/
 
 # dotenv environment variables file
 .env
+.env.test
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
 
-# next.js build output
+# Next.js build output
 .next
+
+# Nuxt.js build / generate output
+.nuxt
+dist
+
+# Gatsby files
+.cache/
+# Comment in the public line in if your project uses Gatsby and *not* Next.js
+# https://nextjs.org/blog/next-9-1#public-directory-support
+# public
+
+# vuepress build output
+.vuepress/dist
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/
+
+# TernJS port file
+.tern-port

.node-version

@@ -0,0 +1 @@
+12.18.2

.npmrc

@@ -0,0 +1 @@
+save-exact=true

.prettierrc.js

@@ -0,0 +1,9 @@
+module.exports = {
+    tabWidth: 4,
+    semi: true,
+    singleQuote: true,
+    quoteProps: 'consistent',
+    trailingComma: 'all',
+    arrowParens: 'always',
+    printWidth: 192,
+};

.travis.yml

@@ -1,5 +1,14 @@
 language: node_js
 node_js:
-- "8.15"
-- "10.15"
+- 8.17.0
+- 9.11.2
+- 10.22.0
+- 11.15.0
+- 12.18.2
+- 13.14.0
 after_success: "./node_modules/.bin/nyc report --reporter=text-lcov | ./node_modules/.bin/coveralls"
+notifications:
+  email: false
+  slack:
+    rooms:
+      secure: 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