piscine-Js/debounce.js at master · nemsstyve/piscine-Js · GitHub

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const debounce = (f, ms) => {
    let timeout
    return function executedFunction() {
        const context = this
        const args = arguments
        const later = function() {
            timeout = null
            f.apply(context, args)
        }
        clearTimeout(timeout)
        timeout = setTimeout(later, ms)
    }
}

const opDebounce = (f, ms, op) => {
    let timeout
    return function executedFunction() {
        const context = this
        const args = arguments
        const later = function() {
            timeout = null
            if (op !== undefined)
                if (!op.leading) f.apply(context, args)
        }
        let callNow
        if (op !== undefined) {
            callNow = op.leading && !timeout
        }
        clearTimeout(timeout)
        timeout = setTimeout(later, ms)
        if (callNow) f.apply(context, args)
    }
}