memo-switch

0.1.3 • Public • Published

memo-switch

A switch that memorizes state transition events.

CircleCI npm version David

API Documentation

concept.png

  • The switch memorizes all the state transition events.
  • From the events, we get state of any time point.

Install

npm install memo-switch

Usage

const MemoSwitch = require('memo-switch')
 
const memoSwitch = MemoSwitch.initialize()
 
console.log(memoSwitch.isActivated) // false
memoSwitch.toggle()
console.log(memoSwitch.isActivated) // true

for babel|flow users

// @flow
import MemoSwitch from 'memo-switch/jsnext'

This way, we can import the module and their type.

Get state of a time point

const memoSwitch = MemoSwitch.initialize()
 
const timestamp = new Date().getTime()
console.log(memoSwitch.isActivatedAt(timestamp)) // true
 
const minuteAgo = new Date().getTime() - 360000
console.log(memoSwitch.isActivatedAt(minuteAgo)) // false

Default state

Set default state to the 1st argument of MemoSwitch.initialize().

const memoSwitch = MemoSwitch.initialize(true)
console.log(memoSwitch.isActivated) // true

Time resolution

We can set time resolution of the events. Default resolution: MINUTE.

First, load the Resolutions constants.

const { Resolutions } = MemoSwitch

In ES modules,

import MemoSwitch, { Resolutions } from 'memo-switch'

Then, set at 2nd argument of MemoSwitch.initialize().

const memoSwitch = MemoSwitch.initialize(false, Resolutions.MILLISECOND)

Available resolutions

  • MILLISECOND
  • SECOND
  • MINUTE
  • HOUR
  • DAY
  • MONTH
  • YEAR

Save/Restore the switch

Just stringify it.

const str = JSON.stringify(memoSwitch)

To restore, give the object to constructor.

const obj = JSON.parse(str)
const memoSwitch2 = new MemoSwitch(obj)

LICENSE

MIT

Dependents (0)

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Install

npm i memo-switch

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0

Version

0.1.3

License

MIT

Last publish

Collaborators

  • cureapp-admin