ecmascrip?
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*.swp
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.DS_Store
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npm-debug.log
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tmp
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bin/configlet
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bin/configlet.exe
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node_modules
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.idea
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babel-output
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# Hello World
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The classical introductory exercise. Just say "Hello, World!".
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["Hello, World!"](http://en.wikipedia.org/wiki/%22Hello,_world!%22_program) is
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the traditional first program for beginning programming in a new language
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or environment.
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The objectives are simple:
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- Write a function that returns the string "Hello, World!".
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- Run the test suite and make sure that it succeeds.
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- Submit your solution and check it at the website.
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If everything goes well, you will be ready to fetch your first real exercise.
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## Setup
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Go through the setup instructions for ECMAScript to
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install the necessary dependencies:
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http://exercism.io/languages/ecmascript/installation
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## Requirements
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Install assignment dependencies:
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```bash
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$ npm install
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```
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## Making the test suite pass
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Execute the tests with:
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```bash
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$ npm test
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```
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In the test suites all tests but the first have been skipped.
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Once you get a test passing, you can enable the next one by
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changing `xtest` to `test`.
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## Source
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This is an exercise to introduce users to using Exercism [http://en.wikipedia.org/wiki/%22Hello,_world!%22_program](http://en.wikipedia.org/wiki/%22Hello,_world!%22_program)
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## Submitting Incomplete Solutions
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It's possible to submit an incomplete solution so you can see how others have completed the exercise.
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class HelloWorld {
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hello() {
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return "Hello, World!"
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}
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}
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export default HelloWorld;
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import HelloWorld from './hello-world';
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describe('Hello World', () => {
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const greeter = new HelloWorld();
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test('says hello', () => {
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expect(greeter.hello()).toEqual('Hello, World!');
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});
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});
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{
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"name": "xecmascript",
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"version": "0.0.0",
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"description": "Exercism exercises in ECMAScript 6.",
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"author": "Katrina Owen",
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"private": true,
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"repository": {
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"type": "git",
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"url": "https://github.com/exercism/xecmascript"
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},
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"devDependencies": {
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"babel-jest": "^21.2.0",
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"babel-plugin-transform-builtin-extend": "^1.1.2",
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"babel-preset-env": "^1.4.0",
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"eslint": "^3.19.0",
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"eslint-config-airbnb": "^15.0.1",
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"eslint-plugin-import": "^2.2.0",
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"eslint-plugin-jsx-a11y": "^5.0.1",
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"eslint-plugin-react": "^7.0.1",
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"jest": "^21.2.1"
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},
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"jest": {
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"modulePathIgnorePatterns": [
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"package.json"
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]
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},
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"babel": {
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"presets": [
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[
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"env",
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{
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"node": "current"
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}
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]
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],
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"plugins": [
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[
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"babel-plugin-transform-builtin-extend",
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{
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"globals": [
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"Error"
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]
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}
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],
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[
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"transform-regenerator"
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]
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]
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},
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"scripts": {
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"test": "jest --no-cache ./*",
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"watch": "jest --no-cache --watch ./*",
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"lint": "eslint .",
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"lint-test": "eslint . && jest --no-cache ./* "
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},
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"eslintConfig": {
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"parserOptions": {
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"ecmaVersion": 6,
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"sourceType": "module"
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},
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"env": {
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"es6": true,
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"node": true,
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"jest": true
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},
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"extends": "airbnb",
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"rules": {
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"import/no-unresolved": "off",
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"import/extensions": "off"
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}
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},
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"licenses": [
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"MIT"
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],
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"dependencies": {}
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}
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# Leap
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Given a year, report if it is a leap year.
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The tricky thing here is that a leap year in the Gregorian calendar occurs:
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```plain
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on every year that is evenly divisible by 4
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except every year that is evenly divisible by 100
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unless the year is also evenly divisible by 400
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```
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For example, 1997 is not a leap year, but 1996 is. 1900 is not a leap
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year, but 2000 is.
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If your language provides a method in the standard library that does
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this look-up, pretend it doesn't exist and implement it yourself.
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## Notes
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Though our exercise adopts some very simple rules, there is more to
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learn!
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For a delightful, four minute explanation of the whole leap year
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phenomenon, go watch [this youtube video][video].
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[video]: http://www.youtube.com/watch?v=xX96xng7sAE
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## Setup
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Go through the setup instructions for ECMAScript to
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install the necessary dependencies:
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http://exercism.io/languages/ecmascript/installation
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## Requirements
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Install assignment dependencies:
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```bash
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$ npm install
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```
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## Making the test suite pass
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Execute the tests with:
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```bash
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$ npm test
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```
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In the test suites all tests but the first have been skipped.
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Once you get a test passing, you can enable the next one by
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changing `xtest` to `test`.
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## Source
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JavaRanch Cattle Drive, exercise 3 [http://www.javaranch.com/leap.jsp](http://www.javaranch.com/leap.jsp)
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## Submitting Incomplete Solutions
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It's possible to submit an incomplete solution so you can see how others have completed the exercise.
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import Year from './leap';
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describe('A leap year', () => {
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test('year not divisible by 4: common year', () => {
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const year = new Year(2015);
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expect(year.isLeap()).toBeFalsy();
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});
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xtest('year divisible by 4, not divisible by 100: leap year', () => {
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const year = new Year(2016);
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expect(year.isLeap()).toBeTruthy();
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});
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xtest('year divisible by 100, not divisible by 400: common year', () => {
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const year = new Year(2100);
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expect(year.isLeap()).toBeFalsy();
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});
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xtest('year divisible by 400: leap year', () => {
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const year = new Year(2000);
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expect(year.isLeap()).toBeTruthy();
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});
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});
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{
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"name": "xecmascript",
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"version": "0.0.0",
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"description": "Exercism exercises in ECMAScript 6.",
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"author": "Katrina Owen",
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"private": true,
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"repository": {
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"type": "git",
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"url": "https://github.com/exercism/xecmascript"
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},
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"devDependencies": {
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"babel-jest": "^21.2.0",
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"babel-plugin-transform-builtin-extend": "^1.1.2",
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"babel-preset-env": "^1.4.0",
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"eslint": "^3.19.0",
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"eslint-config-airbnb": "^15.0.1",
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"eslint-plugin-import": "^2.2.0",
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"eslint-plugin-jsx-a11y": "^5.0.1",
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"eslint-plugin-react": "^7.0.1",
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"jest": "^21.2.1"
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},
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"jest": {
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"modulePathIgnorePatterns": [
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"package.json"
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]
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},
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"babel": {
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"presets": [["env",{"node": "current"}]
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],
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"plugins": [
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[
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"babel-plugin-transform-builtin-extend",
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{
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"globals": [
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"Error"
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]
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}
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],
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[
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"transform-regenerator"
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]
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]
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},
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"scripts": {
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"test": "jest --no-cache ./*",
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"watch": "jest --no-cache --watch ./*",
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"lint": "eslint .",
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"lint-test": "eslint . && jest --no-cache ./* "
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},
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"eslintConfig": {
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"parserOptions": {
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"ecmaVersion": 6,
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"sourceType": "module"
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},
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"env": {
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"es6": true,
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"node": true,
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"jest": true
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},
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"extends": "airbnb",
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"rules": {
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"import/no-unresolved": "off",
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"import/extensions": "off"
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}
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},
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"licenses": [
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"MIT"
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],
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"dependencies": {}
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}
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