javascript tact template

1function template(strings, ...keys) {
2  return (function(...values) {
3    var dict = values[values.length - 1] || {};
4    var result = [strings[0]];
5    keys.forEach(function(key, i) {
6      var value = Number.isInteger(key) ? values[key] : dict[key];
7      result.push(value, strings[i + 1]);
8    });
9    return result.join('');
10  });
11}
12
13var t1Closure = template`${0}${1}${0}!`;
14t1Closure('Y', 'A');  // "YAY!"
15var t2Closure = template`${0} ${'foo'}!`;
16t2Closure('Hello', {foo: 'World'});  // "Hello World!"
17

1var a = 5;
2var b = 10;
3
4function tag(strings, ...values) {
5  console.log(strings[0]); // "Hello "
6  console.log(strings[1]); // " world "
7  console.log(values[0]);  // 15
8  console.log(values[1]);  // 50
9
10  return "Bazinga!";
11}
12
13tag`Hello ${ a + b } world ${ a * b}`;
14// "Bazinga!"
15