lab-Anthony

lab-Anthony/.eslintignore

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

lab-Anthony/.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-Anthony/.gitignore

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+
+# Created by https://www.gitignore.io/api/osx,vim,node,linux,windows,visualstudiocode
+
+### Linux ###
+*~
+
+# temporary files which can be created if a process still has a handle open of a deleted file
+.fuse_hidden*
+
+# KDE directory preferences
+.directory
+
+# Linux trash folder which might appear on any partition or disk
+.Trash-*
+
+# .nfs files are created when an open file is removed but is still being accessed
+.nfs*
+
+### 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
+
+### 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
+
+### VisualStudioCode ###
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+.history
+
+### 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,linux,windows,visualstudiocode

lab-Anthony/README.md

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+Tools and Context
+
+fp.map has an arity of 2 and accepts an array or a string.
+It outputs a new array based on a given function called on an array.
+
+fp.filter has an arity of 2 and accepts arrays.
+It outputs a new Array based on a test called within a function on an array.
+
+fp.reduce has an arity of 3 and accepts arrays.
+It outputs a number which is determined by a function that is applied against an accumulator and an array.
+
+fp.slice has an arity of 3 and accepts arrays.
+It outputs an array based on a beginning and end point on an array.

lab-Anthony/__test__/fp.test.js

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+'use strict';
+
+const fp = require('../lib/fp.js');
+
+describe('Testing map functionality', () => {
+  test('map() should return [H,E,L,L,O]', () => {
+    let result = fp.map((word) => word.toUpperCase(), 'Hello');
+    expect(result).toEqual(['H','E','L','L','O']);
+  });
+  test('map() should error with a bad first parameter', () => {
+    try {
+      fp.map('this is not a callback', 'this is a valid string');
+    } catch (error) {
+      expect(error.message).toEqual('first parameter is not a function');
+    }
+  });
+  test('map() should error with a bad second parameter', () => {
+    try {
+      fp.map((word) => word.toUpperCase(), 44);
+    } catch (error) {
+      expect(error.message).toEqual('second parameter is not an array or string');
+    }
+  });
+});
+//
+describe('Testing filter functionality', () => {
+  test('filter() should return words shorter than 5 characters', () => {
+    let result = fp.filter((words) => words.length > 6, ['super', 'neat', 'cool', 'radical', 'exceptional']);
+    console.log(result);
+    expect(result).toEqual(['radical','exceptional']);
+  });
+  test('filter() should error with a bad first parameter', () => {
+    try {
+      fp.filter('this is not a function', ['this', 'is', 'an', 'array']);
+    } catch (error) {
+      expect(error.message).toEqual('first parameter is not a function');
+    }
+  });
+  test('filter() should error with a bad second parameter', () => {
+    try {
+      fp.filter((words) => words.length > 6, 55);
+    } catch (error) {
+      expect(error.message).toEqual('second parameter is not an array');
+    }
+  });
+});
+//
+describe('Testing reduce functionality', () => {
+  test('reduce() should return the sum of all the values', () => {
+    let result = fp.reduce((accumulator, currentValue) => accumulator + currentValue, [1,2,3], 0);
+    expect(result).toEqual(6);
+  });
+  test('reduce() should return an error with a bad first parameter', () => {
+    try {
+      fp.reduce('hello, this is not a function', [1,2,3], 0);
+    } catch (error) {
+      expect(error.message).toEqual('first parameter is not a function');
+    }
+  });
+  test('reduce() should return an error with a bad second parameter', () => {
+    try {
+      fp.reduce((accumulator, currentValue) => accumulator + currentValue, 66, 0);
+    } catch (error) {
+      expect(error.message).toEqual('second parameter is not an array');
+    }
+  });
+});
+
+describe('Testing slice functionality', () => {
+  test('slice() should return [steak, kimchi]', () => {
+    let result = fp.slice(1, 3, ['ramen', 'steak', 'kimchi', 'lecho']);
+    expect(result).toEqual(['steak', 'kimchi']);
+  });
+  test('slice() should return an error with a bad third parameter', () => {
+    try {
+      fp.slice(1, 3, 'this is not an array');
+    } catch (error) {
+      expect(error.message).toEqual('third parameter is not an array');
+    }
+  });
+});

lab-Anthony/lib/fp.js

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+'use strict';
+
+const fp = module.exports = {};
+
+fp.map = function (callback, collection) {
+  if(!(callback instanceof Function)) throw new Error('first parameter is not a function');
+  if(!(collection instanceof Array) && (typeof collection !== 'string')) throw new Error('second parameter is not an array or string');
+  return Array.prototype.map.call(collection, callback);
+};
+
+fp.filter = function (callback, collection) {
+  if(!(callback instanceof Function)) throw new Error('first parameter is not a function');
+  if(!(collection instanceof Array)) throw new Error('second parameter is not an array');
+  return Array.prototype.filter.call(collection, callback);
+};
+
+fp.reduce = function (callback, collection, initialValue) {
+  if(!(callback instanceof Function)) throw new Error('first parameter is not a function');
+  if(!(collection instanceof Array)) throw new Error('second parameter is not an array');
+  return Array.prototype.reduce.call(collection, callback, initialValue);
+};
+
+fp.slice = function (begin, end, collection) {
+  if(!(collection instanceof Array)) throw new Error('third parameter is not an array');
+  return Array.prototype.slice.call(collection, begin, end);
+};