locutus/esm/clojure/string/blank.js

Locutus other languages' standard libraries to JavaScript for fun and educational purposes

export function blank(s) {
    //      discuss at: https://locutus.io/clojure/blank/
    // parity verified: Clojure 1.12
    //     original by: Kevin van Zonneveld (https://kvz.io)
    //          note 1: Clojure uses blank?, JS uses blank
    //       example 1: blank('')
    //       returns 1: true
    //       example 2: blank('  ')
    //       returns 2: true
    //       example 3: blank('hello')
    //       returns 3: false
    if (s === null || s === undefined) {
        return true;
    }
    return String(s).trim().length === 0;
}