jczimm

const auto = rules =>
    (strs, ...vars) => strs.map((str, i) => {
        if (i >= vars.length) return str;
        const v = vars[i];
        const r = rules[typeof v];
        return str + (r ? r(v) : v);
    }).join('');

// examples:
const t = auto({ boolean: v => v || '', object: JSON.stringify });

jczimm

Object.prototype.pipe = function pipe(fn) { return fn(this.constructor(this)); }