Run results for: String match in list: switch-case vs. Array.includes() vs. Set.has()

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36

Browser: Chrome 138

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 10 months ago

Test name	Executions per second
switch-case	54491236.0 Ops/sec
Array.includes	8172566.0 Ops/sec
Set.has	62320788.0 Ops/sec

Script Preparation code:

const Module = {
  A: "mZefJFD9",
  B: "dLl9J",
  C: "4oi4VcZlKi",
  D: "xvtEMvioQ",
  E: "pDDKU02Rqz",
  F: "KcyMMfk",
  G: "Qqu5xOgk",
  H: "eHnpQ",
  I: "jvKje3L",
  J: "YazYS",
  K: "YN8np",
  L: "xbcBKzC",
  M: "6zJY",
  N: "rrZyuOBlU",
  O: "JfK19e6",
  P: "9vMweXIY",
  Q: "fell3",
  R: "JbD0176",
  S: "DwIj",
  T: "eRgPvoP",
  U: "d6pM",
  V: "lVw3HCDBm",
  W: "ujrM",
  X: "ih3NJy49pP",
  Y: "VgLEB3",
  Z: "jSo12",
}

function testSwitchCase(s) {
  switch (s) {
    case Module.A:
    case Module.B:
    case Module.C:
    case Module.D:
    case Module.E:
    case Module.F:
    case Module.G:
    case Module.H:
    case Module.I:
    case Module.J:
    case Module.K:
    case Module.L:
    case Module.M:
    case Module.N:
    case Module.O:
    case Module.P:
    case Module.Q:
    case Module.R:
    case Module.S:
    case Module.T:
    case Module.U:
    case Module.V:
    case Module.W:
    case Module.X:
    case Module.Y:
    case Module.Z:
      return true;
  }
  return false;
}

const array = Object.values(Module)
function testArrayIncludes(s) { return array.includes(s); }

const set = new Set(array)
function testSetHas(s) { return set.has(s); }

const testee = [
  "none",
  array[6],
  "not found",
  array[13],
  "???",
  array[20],
];

Tests:

switch-case
for (const s of testee) { testSwitchCase(s); }
Array.includes
for (const s of testee) { testArrayIncludes(s); }
Set.has
for (const s of testee) { testSetHas(s); }