catherine-looper

lab-catherine/.eslintignore

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

lab-catherine/.eslintrc

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+{
+  "env": {
+    "browser": true,
+    "node": true,
+    "commonjs": true,
+    "jest": true,
+    "es6": true
+  },
+  "globals": {
+    "err": true,
+    "req": true,
+    "res": true,
+    "next": true
+  },
+  "extends": "eslint:recommended",
+  "parserOptions": {
+    "sourceType": "module"
+  },
+  "rules": {
+    "no-console": "off",
+    "indent": [ "error", 2 ],
+    "quotes": ["error", "single", { "allowTemplateLiterals": true }],
+    "comma-dangle": ["error", "always-multiline"],
+    "semi": [ "error", "always" ]
+  }
+}

lab-catherine/.gitignore

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+# Created by https://www.gitignore.io/api/osx,node
+
+### 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 ###
+*.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
+
+# End of https://www.gitignore.io/api/osx,node

lab-catherine/README.md

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+# 01: Node Ecosystem
+
+In arithmetic.js I am exporting an object called Arithmetic. The arithmetic.js .sum function has an arity of two (numberOne and numberTwo). These two inputs must be numbers. If they are not numbers then null will be returned. If they are numbers then the sum of their values will be added and returned. The arithmetic.js .sub function has an arity of two (numberOne and numberTwo). These two inputs must also be numbers. If they are not numbers then null will be returned. If they are numbers then the second parameter will be subtracted from the first and the value returned.
+
+
+In greet.js I am exporting an object called Greet. The greet.js .hello function has an arity of one that accepts a string as input (in our case a name) and returns Hello, <whatever string input is given>. If the input is not a string or is '' then it returns null.

lab-catherine/__test__/arithmetic.test.js

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+'use strict';
+
+const arithmetic = require('../lib/arithmetic');
+
+
+describe('arithmetic.test.js', () => {
+  describe('arithmetic.sum', () => {
+    test('does arithmetic.sum work properly', () => {
+      expect(arithmetic.sum('nine', 'one')).toBe(null);
+      expect(arithmetic.sum(9, 1)).toBe(10);
+    });
+  });
+
+  describe('arithmetic.sub', () => {
+    test('does arithmetic.sub work properly', () => {
+      expect(arithmetic.sub(9, 1)).toBe(8);
+      expect(arithmetic.sub('nine', 'one')).toBe(null);
+    });
+  });
+});

lab-catherine/__test__/greet.test.js

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+'use strict';
+
+const greet = require('../lib/greet');
+
+describe('greet.test.js', () => {
+  describe('greet.null', () => {
+    test('testing to return null for non string values', () => {
+      expect(greet.hello(null)).toBeNull();
+    });
+  });
+
+  describe('greet.helloWorld', () => {
+    test('testing to see that greet module returns hello world', () => {
+      expect(greet.hello('world')).toBe('Hello, world');
+    });
+  });
+});

lab-catherine/lib/arithmetic.js

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+'use strict';
+
+const Arithmetic = module.exports = {};
+
+Arithmetic.sum = (numberOne, numberTwo) => {
+  if(typeof numberOne !== 'number' || typeof numberTwo !== 'number'){
+    return null;
+  }
+  return numberOne + numberTwo;
+};
+
+Arithmetic.sub = (numberOne, numberTwo) => {
+  if(typeof numberOne !== 'number' || typeof numberTwo !== 'number') {
+    return null;
+  }
+  return numberOne - numberTwo;
+};

lab-catherine/lib/greet.js

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+'use strict';
+
+const Greet = module.exports = {};
+
+Greet.hello = (name) => {
+  if(name === '' || typeof name !== 'string'){
+    return null;
+  }
+  return `Hello, ${name}`;
+};