lineTag.js

/**
 * Removes new lines and tabs and preceding whitespace in a multi-line
 * template strings.
 * 
 * E.g.:
 *  console.log(lineTag`line: ${1} 
 *      line: ${2} 
 *  line: ${3}`); // line: 1 line: 2 line: 3
 * 
 * @param {string[]} strings 
 * @param {...any} args 
 */
function lineTag(strings, ...args) {
    return strings
        .map((str, i) => str + (args.length > i ? args[i] : ''))
        .map(str => str.replace(/(?:\n)\s{2,}/g, ''))
        .join('')
        .replace(/[\n\t]+/g, '');
}