Function domain

test/bin-test.js:85–85

(values)

  let actual;
  const values = [1, 2, 2, 10, 18, 18];
  const domain = (values) => { actual = values; return [0, 20]; };
  const h = bin().domain(domain);
  assert.strictEqual(h.domain(), domain);
  assert.deepStrictEqual(h(values), [