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export const formatCurrency = (number, currency) => {
    const options = {
        minimumFractionDigits: 2,
        currencyDisplay: 'narrowSymbol',
        currencySign: 'accounting',
    }
    if (currency) {
        options.style = 'currency'
        options.currency = currency
    }

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export const getLocale = () => {
    const locale = (navigator.languages && navigator.languages.length)
        ? navigator.languages[0]
        : navigator.language
    return locale || 'en-US'
}

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export const snippet = (val, len = 5) =>
    (val && val.length > (len * 2))
        ? val.substring(0, len) + '...' + val.substring(val.length - len)
        : val

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export const isPrimitive = val => {
    const type = typeof val
    if (Array.isArray(val)) return false
    if (type === 'object') return val === null
    return type !== 'function'
}

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export function debounce(func, wait, immediate) {
    let timeout
    return function (...args) {
        clearTimeout(timeout)
        timeout = setTimeout(() => {
            timeout = null
            if (!immediate) func.apply(this, args)
        }, wait)
        if (immediate && !timeout) func.apply(this, [...args])
    }

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export const copyToClipboard = async (text) => {
    
    if (!navigator.clipboard)
        // Clipboard API not available
        throw new Error('Your browser doesn\'t allow clipboard access')
    
    try {
        await navigator.clipboard.writeText(text)
    } catch (e) {
        log.error('Failed to copy', e)

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export const omit = (obj, fn) => Object.keys(obj)
    .filter(it => fn(obj[it]))
    .reduce((acc, it) => ({ ...acc, [it]: obj[it] }), {})

wesleybliss

export const isNumeric = n =>
    !(isNaN(n)) && (typeof n !== 'object') &&
    (n != Number.POSITIVE_INFINITY) && (n != Number.NEGATIVE_INFINITY)

wesleybliss

export const selectText = el => {
    if (!window.getSelection || !document.createRange) return
    const sel = window.getSelection()
    if (sel.toString() == '')
        window.setTimeout(() => {
            const range = document.createRange()
            range.selectNodeContents(el)
            sel.removeAllRanges()
            sel.addRange(range)
        }, 1)

wesleybliss

interface Observer<T> {
    fun onChange(newValue: T?)
}

class Observable<T>(initialValue: T? = null) {
    
    // List ov observers watching this value for changes
    private val observers = mutableListOf<Observer<T>>()
    
    // The real value of this observer