Features/node ecosystem

.eslintignore

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+**/node_modules/*
+**/vendor/*
+**/*.min.js
+**/coverage/*
+**/build/*

.eslintrc

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+
+{
+  "rules": {
+    "no-console": "off",
+    "indent": [ "error", 2 ],
+    "quotes": [ "error", "single" ],
+    "semi": ["error", "always"],
+    "linebreak-style": [ "error", "unix" ]
+  },
+  "env": {
+    "es6": true,
+    "node": true,
+    "mocha": true,
+    "jasmine": true
+  },
+  "ecmaFeatures": {
+    "modules": true,
+    "experimentalObjectRestSpread": true,
+    "impliedStrict": true
+  },
+  "extends": "eslint:recommended"
+}

.gitignore

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+# Created by https://www.gitignore.io/api/osx,vim,node,macos,windows
+
+### macOS ###
+*.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+### Node ###
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Typescript v1 declaration files
+typings/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+
+
+### OSX ###
+
+# Icon must end with two \r
+
+# Thumbnails
+
+# Files that might appear in the root of a volume
+
+# Directories potentially created on remote AFP share
+
+### Vim ###
+# swap
+[._]*.s[a-v][a-z]
+[._]*.sw[a-p]
+[._]s[a-v][a-z]
+[._]sw[a-p]
+# session
+Session.vim
+# temporary
+.netrwhist
+*~
+# auto-generated tag files
+tags
+
+### Windows ###
+# Windows thumbnail cache files
+Thumbs.db
+ehthumbs.db
+ehthumbs_vista.db
+
+# Folder config file
+Desktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+# End of https://www.gitignore.io/api/osx,vim,node,macos,windows

lab-jonah/index.js

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+'use strict';
+
+const greet = require('./lib/greet.js');
+const arithmetic = require('./lib/arithmetic.js');
+
+greet('Jonah');

lab-jonah/lib/arithmetic.js

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+'use strict';
+
+module.exports = exports = {};
+
+exports.add = function(a, b) {
+  if (typeof arguments[0] !== 'number' || typeof arguments[1] !== 'number') throw new Error('not a number!');
+
+  return a + b;
+};
+
+exports.sub = function(a, b) {
+  if (typeof arguments[0] !== 'number' || typeof arguments[1] !== 'number') throw new Error('not a number!');
+
+  return a - b;
+};

lab-jonah/lib/greet.js

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+'use strict';
+
+module.exports = function greet(name) {
+  if (typeof arguments[0] !== 'string') throw new Error(null);
+
+  return `Hello ${name}!`;
+};

lab-jonah/test/arithmetic-test.js

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+'use strict';
+
+const arithmetic = require('../lib/arithmetic.js');
+const assert = require('assert');
+
+describe('Arithmetic Module', function() {
+  describe('#add', function() {
+    it('should return 5', function() {
+      var result = arithmetic.add(3, 2);
+      assert.ok(result === 5, 'not equal to 5');
+    });
+    it('should throw invalid number', function() {
+      assert.throws(function() {
+        arithmetic.add();
+      }, 'error not thrown');
+    });
+  });
+  describe('#sub', function() {
+    it('should return 1', function() {
+      var result = arithmetic.sub(3, 2);
+      assert.ok(result === 1, 'not equal to 1');
+    });
+    it('should throw invalid number', function() {
+      assert.throws(function() {
+        arithmetic.sub();
+      }, 'error not thrown');
+    });
+  });
+});

lab-jonah/test/greet-test.js

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+'use strict';
+
+const greet = require('../lib/greet.js');
+const assert = require('assert');
+
+describe('Greet Module', function() {
+  it('should return Hello World!', function() {
+    var result = greet('World');
+    assert.ok(result === 'Hello World!', 'not equal to Hello World!');
+  });
+
+  it('should throw an invalid string error', function() {
+    assert.throws(function() {
+      greet();
+    }, 'error not thrown');
+  });
+});