@focme/rsk-util v1.0.1

@focme/rsk-util

a tool lib for rsk-template

functions

is

is.nil
param

• target: any

returns boolean

determine target is undefined or null

import { is } from "@focme/rsk-util"

is.nil(undefined) // true
is.nil(null) // true
is.nil("") // false
is.nil(0) // false
is.nil(true) // false
is.nil({}) // false
is.nil([]) // false

is.nilEmpty
param

• target: any

returns boolean

determine target is nil or empty string

import { is } from "@focme/rsk-util"

is.nilEmpty(undefined) // true
is.nilEmpty(null) // true
is.nilEmpty("") // true
is.nil(0) // false
is.nil(true) // false
is.nil({}) // false
is.nil([]) // false

fill

fill
param

• option: { target, length, item, position }

  target: string target string
  length: number length of the result
  item: string the item filled into target
  position: start | end | around filling position default value end

returns string

import { fill } from "@focme/rsk-util"

fill() // ""
fill({ length: 10 }) // "          "
fill({ length: 10, item: "1" }) // "1111111111"
fill({ target: "6", length: 2, item: "0" }) // "60"
fill({ target: "6", length: 2, item: "0", position: "start" }) // "06"

createCurrent

createCurrent
param

• init: any

returns { current: any }

a copy of React.useRef hook

import { createCurrent } from "@focme/rsk-util"

const current = createCurrent(0)
console.log(current) // { current: 0 }

createJoin

createJoin
param

• separator: string

returns (...arg[]: any[]) => string

a Array.prototyp.join.call function

const { createJoin } from "@focme/rsk-util"

const join = createJoin()
join([1, 3, 5, () => 7]) // `1357`
join("-") // `1-3-5-7`

const { createJoin } from "@focme/rsk-util"

const join = createJoin("-")
join([1, 3, 5, () => 7]) // `1-3-5-7`

createJoin.from
param

• ...arg[]: any[]

returns (separator: string) => string

a Array.prototyp.join.call function

const { createJoin } from "@focme/rsk-util"

const join = createJoin.from([1, 3, 5, () => 7])
join() // `1357`
join("-") // `1-3-5-7`

createTimer

createTimer
returns { check, record, records, format }

> `check()` add a record  
> `record(index: number)` get a record  
> `records()` get all records  
> `format(template: string, index?: number)` format a record to string  

record durations

const createTimer from "@focme/rsk-util"

const timer = createTimer()
timer.record() // 0
setTimeout(() => {
    timer.check()
    timer.record() // may be 10
    timer.record(-1) // may be 10
    timer.record(0) // 0
    timer.records() // may be [0, 10]
    timer.format("ss\\s") // may be 10s
    timer.format("ss\\s", 0) // 0s
}, 10)

format option

createDater

createDater
param

• date: Date

returns { current, format }

const { createDater } from "@focme/rsk-util"

const dater = createDater(new Date(1695019785071))
console.log(dater.current) // { YYYY, YY, ... }
dater.format("YYYY") // 2023
dater.format("YYYY-MM-DD HH:mm:ss") // "2023-09-18 14:49:45"

format option