String Helpers Examples

string.js

export const ucFirst = (string)=>{
    if (typeof string !== 'string') return ''
    return string.charAt(0).toUpperCase() + string.slice(1)
}

export const ucWords = (string) =>{
    if (typeof string !== 'string') return ''
    return string.split(' ').map(word => ucFirst(word)).join(' ')
}

export const snakeCase = (string) =>{
    return string.replace(/-/g, '_').replace(/ /g, '_').replace(/[A-Z]/g, letter => `_${letter.toLowerCase()}`).replace(/^_/, '')
}

export const camelCase = (string)=>{
    return snakeCase(string).replace(/_./g, letter => letter.toUpperCase().replace('_', ''))
}

export const sentenceCase = (string)=>{
    return ucFirst(snakeCase(string).split('_').join(' '))
}

export const titleCase = (string)=>{
    const blacklist = ['a', 'an', 'and', 'the', 'is', 'are', 'has','and', 'as', 'at', 'but', 'by', 'for', 'from', 'if', 'in', 'into', 'like', 'near', 'that', 'nor', 'of', 'off', 'on', 'once', 'onto', 'or', 'over', 'past', 'so', 'than', 'that', 'till', 'to', 'up', 'upon', 'with', 'when', 'yet']
    return sentenceCase(string).split(' ').map(word => blacklist.includes(word) ? word : ucFirst(word)).join(' ')
}

export const phoneNumberFormatted = (phoneNumberString, seperator=null) => {
    var cleaned = ('' + phoneNumberString).replace(/\D/g, '')
    var match = cleaned.match(/^(\d{3})(\d{3})(\d{4})$/)
    if (match) {
        if(!seperator) return `(${match[1]}) ${match[2]} - ${match[3]}`
        return `${match[1]}${seperator}${match[2]}${seperator}${match[3]}`
    }
    return null
}

export const nestedFromDot = (object, string)=>{
    return string.split('.').reduce((o,i)=>o[i], object)
}
export const nestedToDot = (object, string, value)=>{
    const props = string.split('.')
    let level = object
    let prevProp = null
    props.forEach(prop => {
        level = level[prop]
    })
}