Dylan Smith dylansmith

dylansmith / number-to-string-wtf.js

Created August 31, 2018 15:58

number-to-string-wtf.js

	console.time('Number.toString');
	for (var i=0; i < 1000000; i++) {
	Number.toString(i);
	}
	console.timeEnd('Number.toString');

	console.time('i.toString');
	for (var i=0; i < 1000000; i++) {
	i.toString();
	}

dylansmith / date-mock.js

Created April 3, 2018 15:03

Native JS datetime mocking

	function mockTime(val) {
	Date = new Proxy(Date, {
	construct: function(target, args) {
	if (args.length === 0) {
	return new target(val);
	}
	return new target(...args);
	}
	});
	}

dylansmith / unkeyBy.js

Last active March 27, 2018 14:19

unkeyBy (inverse of _.keyBy)

	// using map - fastest!
	const unkeyBy = (obj, prop) => {
	const res = [];
	Object.keys(obj).map((x, i) => res[i] = { ...obj[x], [prop]: x });
	return res;
	};

	// adds ungrouping
	const ungroupBy = (obj, prop) => {
	const res = [];

dylansmith / package.json

Created June 5, 2017 11:13

jest config for TypeScript

	{
	"jest": {
	"testEnvironment": "node",
	"transform": {
	"^.+\\.ts$": "<rootDir>/node_modules/ts-jest/preprocessor.js"
	},
	"testRegex": "test/.*\\.(ts)$",
	"modulePaths": ["<rootDir>/src"],
	"moduleFileExtensions": [
	"ts",

dylansmith / package.json

Last active January 11, 2016 12:42

Run `npm install` after git pull if package.json was changed

	{
	"devDependencies": {
	"ghooks": "latest"
	},
	"config": {
	"ghooks": {
	"post-merge": "./hooks/post-merge.sh"
	}
	}
	}

dylansmith / recursive_json_key_transform.js

Created January 11, 2016 09:25

Recursively transform JSON keys

	var fs = require('fs')
	var _ = require('lodash')
	var humps = require('humps')
	var input = require('./input.json')
	var outputFile = './output.json'

	function processObj(val) {
	if (_.isArray(val)) {
	return val.map(item => processObj(item))
	}

dylansmith / actions.js

Created December 11, 2015 14:25

Minimal-boilerplate redux actionCreator pattern, using redux-actions

	import { createAction } from 'redux-actions'

	export const SOME_ACTION = 'SOME_ACTION'
	export const ANOTHER_ACTION = 'ANOTHER_ACTION'

	const actionCreators = {
	someAction: () => createAction(SOME_ACTION/, .../),
	anotherAction: () => createAction(ANOTHER_ACTION/, .../)
	}

dylansmith / gist:1e398ed1ab92bc0d250e

Created October 27, 2015 08:07

Get directory of current bash script

DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

dylansmith / ec2ssh.sh

Last active October 27, 2015 06:11

ec2 ssh access by "name" tag and instance number, with optional command to pass

	#!/bin/bash

	# USAGE:
	# ./ec2ssh.sh <tag:name> <instance_num> [<remote_command>]

	if [ $# -lt 2 ]
	then
	echo "Usage: `basename $0` <tag:name> <instance_num>"
	exit 1
	fi

dylansmith / create_aws_creds.sh

Created October 15, 2015 11:18

Create .aws/credentials from environment vars

	#!/bin/bash
	mkdir -p ~/.aws
	echo -e "[default]\naws_access_key_id=$AWS_ACCESS_KEY_ID\naws_secret_access_key=$AWS_SECRET_ACCESS_KEY" > ~/.aws/credentials