2-Dimensional Geometric Shapes

Javascript Software Developer Interview Code

Build a simple Object Oriented Javascript library for defining 2-dimensional geometric shapes and making basic calculations with them. The following shapes should be featured:

• circle
• right triangle
• equilateral triangle
• rectangle
• square
• parallelogram

For each shape, the library should be able to do the following:

• calculate the area
• calculate the perimeter
• proportionally resize the shape up or down, given a floating-point scale factor

To view test output alone, run npm run test.

Get Started

1. Install Node LTS. Need to run multiple versions of Node? Use nvm or nvm-windows
2. Clone this repository. - git clone https://github.com/jcscott2015/2d-geometric-shapes.git or download the zip
3. Make sure you're in the directory you just created. - cd 2d-geometric-shapes
4. Install Node Packages. - npm install
5. Run the app. - npm start -s This will run the automated build process, start up a webserver, and open the application in your default browser. When doing development with this kit, this command will continue watching files all your files. Every time you hit save the code is rebuilt (in memory), linting runs, and tests run automatically. (Currently, you'll have to reload the browser page manually.) Note: The -s flag is optional. It enables silent mode which suppresses unnecessary messages during the build.
6. Build the app. - npm run build This will run linting and tests and then build the app and place minimized and optimized code files in the dist folder. These can be copied to your public server.
7. Having issues? See below.

Having Issues? Try these things first

1. Run npm install - If you forget to do this, you'll see this: babel-node: command not found.
2. Make sure you're running the latest version of Node. Or, use Node LTS if you're having issues on Windows. Node 7 has issues on some Windows machines.
3. Make sure files with names that begin with a dot (.babelrc, .editorconfig, .eslintrc) are copied to the project directory root. This is easy to overlook if you copy this repository manually.
4. Don't run the project from a symbolic link. It will cause issues with file watches.
5. Having linting issues? Delete any .eslintrc that you're storing in your user directory. Also, disable any ESLint plugin / custom rules that you've enabled within your editor. These will conflict with the ESLint rules defined in the course.
6. Seeing Error: listen EADDRINUSE :::3000? That means port 3000 is already in use on your machine. You probably have another instance of this project running on your machine in a different window. So find that window and kill the other instance using Ctrl+C.
7. Nothing above work? Delete your node_modules folder and re-run npm install.

Dependencies

Dependency	Use
promise-polyfill	Lightweight promise polyfill. A+ compliant
whatwg-fetch	A window.fetch polyfill

Development Dependencies

Dependency	Use
babel-cli	Babel Command line interface
babel-core	Babel Core for transpiling the new JavaScript to old
babel-loader	Adds Babel support to Webpack
babel-preset-env	Babel preset for running all the latest standardized JavaScript features
babel-register	Register Babel to transpile our Mocha tests
chai	Node BDD/TDD assertion library for node.js and the browser. Test framework agnostic.
chai-as-promised	Extends Chai with assertions about promises.
chai-fetch-mock	Chai plugin for fetch-mock library
chalk	Node Terminal string styling done right
cheerio	Supports querying DOM with jQuery like syntax - Useful in testing and build process for HTML manipulation
compression	Node.js compression middleware
copy-webpack-plugin	Copy files and directories in webpack
cross-env	Cross-environment friendly way to handle environment variables
css-loader	Add CSS support to Webpack
eslint	Lints JavaScript
eslint-plugin-import	Advanced linting of ES6 imports
eslint-watch	Add watch functionality to ESLint
express	Fast, unopinionated, minimalist web framework
extract-text-webpack-plugin	Extracts CSS into separate file for production build
fetch-mock	Mock http requests made using fetch (or isomorphic-fetch)
file-loader	File loader module for webpack
html-webpack-plugin	Simplifies creation of HTML files to serve your webpack bundles
jsdom	In-memory DOM for testing
jsdom-schema-faker	JSON-Schema + fake data generators
jsdom-server	Serves JSON files through REST routes
localtunnel	Expose localhost to the world
mocha	JavaScript testing library
nock	Node HTTP Server mocking for node.js
node-sass	Node libsass wrapper
npm-run-all	Display results of multiple commands on single command line
nsp	The Node Security (nodesecurity.io) command line interface
numeral	Format and manipulate numbers
rimraf	Delete files
sass-loader	Add SASS loading support to Webpack
sinon	JavaScript test spies, stubs and mocks.
style-loader	Add Style support to Webpack
url-loader	URL loader module for webpack
webpack	Bundler with plugin system and integrated development server
webpack-dev-middleware	Adds middleware support to webpack