Standard JavaScript Snippets for Atom

A collection of ES6 standardjs code style snippets for faster JavaScript development in Atom Editor.

Yes!, no semicolons:

• Are Semicolons Necessary in JavaScript?
• An Open Letter to JavaScript Leaders Regarding Semicolons
• JavaScript Semicolon Insertion - Everything You Need to Know

Installation

apm install standardjs-snippets

Snippets

Snippets are optimized to be short and easy to remember. Some snippets are "chainable" and render differently when preceded by a "."

For example, .fe renders a chain-friendly version of the "forEach" snippet, while fe renders a full code block.

• declarations
• flow control
• functions
• iterables
• objects and classes
• returning values
• types
• promises
• ES6 modules
• testing
• console
• timers
• DOM
• Node.js
• miscellaneous

Declarations

v⇥ var statement

var ${1:name}

v=⇥ var assignment

var ${1:name} = ${2:value}

l⇥ let statement

let ${1:name}

l=⇥ let assignment

let ${1:name} = ${2:value}

lif=⇥ let declaration and if statement

let ${1}
if (${0}) {
  ${1} = ${2}
}

ly⇥ let yielded assignment

let ${1:name} = yield ${2:value}

c⇥ const statement

const ${1:name}

c=⇥ const assignment

const ${1:name} = ${2:value}

cy⇥ const yielded assignment

const ${1:name} = yield ${2:value}

Flow Control

if⇥ if statement

if (${1:condition}) {
  ${0}
}

el⇥ else statement

else {
  ${0}
}

ife⇥ else statement

if (${1:condition}) {
  ${0}
} else {

}

ei⇥ else if statement

else if (${1:condition}) {
  ${0}
}

fl⇥ for loop (ES6)

for (let ${1:i} = 0, ${2:len} = ${3:iterable}.length ${1:i} < ${2:len}; ${1:i}++) {
  ${0}
}

fi⇥ for in loop (ES6)

for (let ${1:key} in ${2:source}) {
  if (${2:source}.hasOwnProperty(${1:key})) {
    ${0}
  }
}

fo⇥ for of loop (ES6)

for (let ${1:key} of ${2:source}) {
  ${0}
}

wl⇥ while loop

while (${1:condition}) {
  ${0}
}

tc⇥ try/catch

try {
 ${0}
} catch (${1:err}) {

}

tf⇥ try/finally

try {
 ${0}
} finally {

}

tcf⇥ try/catch/finally

try {
  ${0}
} catch (${1:err}) {

} finally {

}

Functions

f⇥ anonymous function

function (${1:arguments}) { ${0} }

fn⇥ named function

function ${1:name} (${2:arguments}) {
  ${0}
}

asf⇥ async function

async function (${1:arguments}) {
  ${0}
}

iife⇥ immediately-invoked function expression (IIFE)

;(function (${1:arguments}) {
  ${0}
})(${2})

fa⇥ function apply

${1:fn}.apply(${2:this}, ${3:arguments})

fc⇥ function call

${1:fn}.call(${2:this}, ${3:arguments})

fb⇥ function bind

${1:fn}.bind(${2:this}, ${3:arguments})

af⇥ arrow function (ES6)

(${1:arguments}) => ${2:statement}

afb⇥ arrow function with body (ES6)

(${1:arguments}) => {
  ${0}
}

gf⇥ generator function (ES6)

function* (${1:arguments}) {
  ${0}
}

gfn⇥ named generator function (ES6)

function* ${1:name}(${1:arguments}) {
  ${0}
}

sf⇥ switch function based on object literals

const ${1:name} = (${2:switching}) => ({
    ${3:case}: ${4:value},
  }[${2:switching}] || ${5:default value}
)

Iterables

fe⇥ forEach loop (chainable)

${1:iterable}.forEach((${2:item}) => {
  ${0}
})

map⇥ map function (chainable)

${1:iterable}.map((${2:item}) => {
  ${0}
})

reduce⇥ reduce function (chainable)

${1:iterable}.reduce((${2:previous}, ${3:current}) => {
  ${0}
}${4:, initial})

filter⇥ filter function (chainable)

${1:iterable}.filter((${2:item}) => {
  ${0}
})

find⇥ ES6 find function (chainable)

${1:iterable}.find((${2:item}) => {
  ${0}
})

every⇥ every function (chainable)

${1:iterable}.every((${2:item}) => {
  ${0}
})

some⇥ some function (chainable)

${1:iterable}.some((${2:item}) => {
  ${0}
})

Objects and classes

cs⇥ class (ES6)

class ${1:name} {
  constructor (${2:arguments}) {
    ${0}
  }
}

csx⇥ child class (ES6)

class ${1:name} extends ${2:base} {
  constructor (${2:arguments}) {
    super(${2:arguments})
    ${0}
  }
}

:⇥ key/value pair

Javascript:

${1:key}: ${2:'value'}

JSON:

"${1:key}": ${2:"value"}

m⇥ method (ES6 syntax)

${1:method} (${2:arguments}) {
  ${0}
}

get⇥ getter (ES6 syntax)

get ${1:property}() {
  ${0}
}

set⇥ setter (ES6 syntax)

set ${1:property}(${2:value}) {
  ${0}
}

gs⇥ getter and setter (ES6 syntax)

get ${1:property}() {
  ${0}
}
set ${1:property}(${2:value}) {

}

proto⇥ prototype method (chainable)

${1:Class}.prototype.${2:methodName} = function (${3:arguments}) {
  ${0}
}

ok Object.keys

Object.keys(${1:obj})

oa Object.assign

Object.assign(${1:dest}, ${2:source})

Returning values

r⇥ return

return ${0}

rth⇥ return this

return this

rn⇥ return null

return null

rt⇥ return true

return true

rf⇥ return false

return false

r0⇥ return 0

return 0

r-1⇥ return -1

return -1

rp⇥ return Promise (ES6)

return new Promise((resolve, reject) => {
  ${0}
})

Types

S⇥ String

N⇥ Number

O⇥ Object

A⇥ Array

D⇥ Date

Rx⇥ RegExp

tof⇥ typeof comparison

typeof ${1:source} === '${2:undefined}'

iof⇥ instanceof comparison

${1:source} instanceof ${2:Object}

ia⇥ isArray

Array.isArray(${1:source})

Promises

p⇥ new Promise (ES6)

new Promise((resolve, reject) => {
  ${0}
})

then⇥ Promise.then (chainable)

${1:promise}.then((${2:value}) => {
  ${0}
})

catch⇥ Promise.catch (chainable)

${1:promise}.catch((${2:err}) => {
  ${0}
})

ES6 modules

ex⇥ module export

export ${1:member}

exd⇥ module default export

export default ${1:member}

im⇥ module import

import ${1:*} from '${2:module}'

ima⇥ module import as

import ${1:*} as ${2:name} from '${3:module}'

imd⇥ module import destructuring

import {$1} from '${2:module}'

BDD testing (Mocha, Jasmine, etc.)

desc⇥ describe

describe('${1:description}', () => {
  ${0}
})

its⇥ synchronous "it"

it('${1:description}', () => {
  ${0}
})

ita⇥ asynchronous "it"

it('${1:description}', (done) => {
  ${0}
})

bf⇥ before test suite

before(() => {
  ${0}
})

bfe⇥ before each test

beforeEach(() => {
  ${0}
})

aft⇥ after test suite

after(() => {
  ${0}
})

afe⇥ after each test

afterEach(() => {
  ${0}
})

Timers

st⇥ setTimeout

setTimeout(() => {
  ${0}
}, ${1:delay})

si⇥ setInterval

setInterval(() => {
  ${0}
}, ${1:delay})

sim⇥ setInterval

setImmediate(() => {
  ${0}
})

DOM

ae⇥ addEventListener

${1:document}.addEventListener('${2:event}', ${3:ev} => {
  ${0}
})

rel⇥ removeEventListener

${1:document}.removeEventListener('${2:event}', ${3:listener})

gi⇥ getElementById

${1:document}.getElementById('${2:id}')

gc⇥ getElementsByClassName

Array.from(${1:document}.getElementsByClassName('${2:class}'))

gt⇥ getElementsByTagName

Array.from(${1:document}.getElementsByTagName('${2:tag}'))

qs⇥ querySelector

${1:document}.querySelector('${2:selector}')

qsa⇥ querySelectorAll

Array.from(${1:document}.querySelectorAll('${2:selector}'))

cdf⇥ createDocumentFragment

${1:document}.createDocumentFragment(${2:elem});

cel⇥ createElement

${1:document}.createElement(${2:elem});

ac⇥ appendChild

${1:document}.appendChild(${2:elem});

rc⇥ removeChild

${1:document}.removeChild(${2:elem});

cla⇥ classList.add

${1:document}.classList.add('${2:class}');

ct⇥ classList.toggle

${1:document}.classList.toggle('${2:class}');

cr⇥ classList.remove

${1:document}.classList.remove('${2:class}');

ga⇥ getAttribute

${1:document}.getAttribute('${2:attr}');

sa⇥ setAttribute

${1:document}.setAttribute('${2:attr}', ${3:value});

ra⇥ removeAttribute

${1:document}.removeAttribute('${2:attr}');

Node.js

cb⇥ Node.js style callback

function (err, ${1:value}) {
  if (err) throw err
  t${0}
}

re⇥ require a module

require('${1:module}')

cre⇥ require and assign a module

const ${1:module} = require('${1:module}')

em⇥ export member

exports.${1:name} = ${2:value}

me⇥ module.exports

module.exports = ${1:name}

on⇥ attach an event handler (chainable)

${1:emitter}.on('${2:event}', (${3:arguments}) => {
  ${0}
})

xm⇥ Express middleware

function (req, res${1:, next}) {
  ${0}
}

xerr⇥ Express error handler

function (err, req, res, next) {
  ${0}
}

Miscellaneous

us⇥ use strict

'use strict'

js⇥ JSON Stringify

JSON.stringify($0)

jp⇥ JSON Parse

JSON.parse($0)

a⇥ await

await ${0}

Console

cl⇥ console.log

console.log(${0})

ce⇥ console.error

console.error(${0})

cw⇥ console.warn

console.warn(${0})

Commands

Use the following keymaps to speed up your development. You can quickly terminate lines with colons or manipulate blocks of code with ease.

End Line with a comma CTRL-,

Terminates the current line with a comma (great for object literals).

End New Line CTRL-ENTER

Terminates the current line with a colon followed with a new line. A comma is inserted when the cursor is inside an object literal.

Easy Blocks CTRL-B

Creates a statement block { ... } with the selected text placed inside and properly indented. If the selection is already wrapped with a block, the block is removed and its content is unindented.

Contributing

More than happy to accept external contributions to the project in the form of feedback, bug reports and even better pull requests. Please read the contributing guidelines

Related Repositories

• Standard Linter
• Standard Formatter

Alternatives to Standard Style

• Semistandard - standard, with semicolons
• XO - JavaScript happiness style, by Sindre Sorhus

Author Info

Software engineer and consultant. I help companies develop software products and make technical decisions. I’m a proponent of devops, continuous delivery, lightweight agile methodologies and open source technology stacks.

I occasionally blog at gaboesquivel.com and you can find me on twitter as @gaboesquivel

License

The MIT License (MIT)

Copyright (c) 2015, Gabo Esquivel

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.