Commands and snippets for faster Javascript and Typescript with the Atom Editor
A collection of commands and ES6-ready snippets for optimizing Javascript and Typescript development productivity.
Use the following keymaps to speed up your development. You can quickly terminate lines with semicolons or manipulate blocks of code with ease.
CTRL-;
Terminates the current line with a semicolon.
CTRL-,
Terminates the current line with a comma (great for object literals).
CTRL-ENTER
Terminates the current line with a colon or semicolon, followed with a new line. A comma is inserted when the cursor is inside an object literal, otherwise a semicolon is inserted.
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.
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.
v⇥
var statementvar ${1:name}
v=⇥
var assignmentvar ${1:name} = ${2:value}
l⇥
let statementlet ${1:name}
l=⇥
let assignmentlet ${1:name} = ${2:value}
co⇥
const statementconst ${1:name}
co=⇥
const assignmentconst ${1:name} = ${2:value}
if⇥
if statementif (${1:condition}) {
${0}
}
el⇥
else statementelse {
${0}
}
ife⇥
else statementif (${1:condition}) {
${0}
} else {
}
ei⇥
else if statementelse if (${1:condition}) {
${0}
}
fl⇥
for loopfor (let ${1:i} = 0, ${2:len} = ${3:iterable}.length; ${1:i} < ${2:len}; ${1:i}++) {
${0}
}
fi⇥
for in loopfor (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}) {
${0}
}
wl⇥
while loopwhile (${1:condition}) {
${0}
}
tc⇥
try/catchtry {
${0}
} catch (${1:err}) {
}
tf⇥
try/finallytry {
${0}
} finally {
}
tcf⇥
try/catch/finallytry {
${0}
} catch (${1:err}) {
} finally {
}
sw⇥
switch caseswitch (${1:expr}) {
case ${2:value}:
return $0;
default:
return;
}
f⇥
anonymous functionfunction (${1:arguments}) {${0}}
fn⇥
named functionfunction ${1:name}(${2: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}) => {
\t${0}
}
gf⇥
generator function (ES6)function* (${1:arguments}) {
${0}
}
gfn⇥
named generator function (ES6)function* ${1:name}(${1:arguments}) {
${0}
}
seq⇥
sequence of 0..n[...Array(${1:length}).keys()]${0}
fe⇥
forEach loop (chainable)${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}
});
c⇥
class (ES6)class ${1:name} {
constructor(${2:arguments}) {
${0}
}
}
cex⇥
child class (ES6)class ${1:name} extends ${2:base} {
constructor(${2:arguments}) {
super(${2:arguments});
${0}
}
}
ctor
class constructor (ES6)constructor(${1:arguments}) {
super(${1:arguments});${0}
}
:⇥
key/value pairJavascript:
${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}) {
${0}
};
a⇥
Object assignObject.assign(${1:dest}, ${2:source})
ac⇥
Object assign copy (shallow clone)Object.assign({}, ${1:original}, ${2:source})
r⇥
returnreturn ${0};
rth⇥
return thisreturn this;
rn⇥
return nullreturn null;
rt⇥
return truereturn true;
rf⇥
return falsereturn false;
r0⇥
return 0return 0;
r-1⇥
return -1return -1;
rp⇥
return Promise (ES6)return new Promise((resolve, reject) => {
${0}
});
rc⇥
return complex value (such as JSX components)return (
${0}
);
S⇥
StringN⇥
NumberO⇥
ObjectA⇥
ArrayD⇥
DateRx⇥
RegExptof⇥
typeof comparisontypeof ${1:source} === '${2:undefined}'
iof⇥
instanceof comparison${1:source} instanceof ${2:Object}
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}
});
ex⇥
module exportexport ${1:member};
exd⇥
module default exportexport default ${1:member};
im⇥
module importimport ${1:*} from '${2:module}';
ima⇥
module import asimport ${1:*} as ${2:name} from '${3:module}';
desc⇥
describedescribe('${1:description}', function () {
${0}
});
cont⇥
contextcontext('${1:description}', function () {
${0}
});
it⇥
and its⇥
synchronous "it"it('${1:description}', function () {
${0}
});
ita⇥
asynchronous "it"it('${1:description}', function (done) {
${0}
});
bf⇥
before test suitebefore(function () {
${0}
});
bfe⇥
before each testbeforeEach(function () {
${0}
});
aft⇥
after test suiteafter(function () {
${0}
});
afe⇥
after each testafterEach(function () {
${0}
});
cl⇥
console.logconsole.log(${0});
ce⇥
console.errorconsole.error(${0});
cw⇥
console.warnconsole.warn(${0});
st⇥
setTimeoutsetTimeout(() => {
${0}
}, ${1:delay});
si⇥
setIntervalsetInterval(() => {
${0}
}, ${1:delay});
sim⇥
setImmediatesetImmediate(() => {
${0}
});
ae⇥
addEventListener${1:document}.addEventListener('${2:event}', ${3:ev} => {
${0}
});
gi⇥
getElementById${1:document}.getElementById('${2:id}')
gc⇥
getElementsByClassNameArray.from(${1:document}.getElementsByClassName('${2:class}'))
Array.from
polyfill required for ES5
gt⇥
getElementsByTagNameArray.from(${1:document}.getElementsByTagName('${2:tag}'))
Array.from
polyfill required for ES5
qs⇥
querySelector${1:document}.querySelector('${2:selector}')
qsa⇥
querySelectorAllArray.from(${1:document}.querySelectorAll('${2:selector}'))
Array.from
polyfill required for ES5
cb⇥
Node.js style callbackfunction (err${1:, value}) {${0}}
re⇥
require a modulerequire('${1:module}');
em⇥
export memberexports.${1:name} = ${2:value};
me⇥
module.exportsmodule.exports = ${1:name};
on⇥
attach an event handler (chainable)${1:emitter}.on('${2:event}', (${3:arguments}) => {
${0}
});
xm⇥
Express middlewarefunction (req, res${1:, next}) {
${0}
}
xerr⇥
Express error handlerfunction (err, req, res, next) {
${0}
}
us⇥
use strict'use strict';
The MIT License (MIT)
Copyright (c) 2014, Nicolas Mercier
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 NONINFRINGEMENT. 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.