initial commit

benchmarks/result/type-guards.bench.ts

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+import { bench, describe } from 'vitest';
+import { STANDARD } from '../helpers/bench-options.js';
+import {
+  ok,
+  err,
+  ntOk,
+  ntErr,
+  TsOk,
+  TsErr,
+  OxOk,
+  OxErr,
+  E,
+  TmResult,
+} from '../helpers/imports.js';
+
+// ---------------------------------------------------------------------------
+// isOk — on Ok variant
+// ---------------------------------------------------------------------------
+
+describe('Result.isOk — on Ok', () => {
+  const nm = ok(42);
+  const nt = ntOk(42);
+  const ts = TsOk(42);
+  const ox = OxOk(42);
+  const fp = E.right(42);
+  const tm = TmResult.ok<number, string>(42);
+
+  bench('native-monad', () => { nm.isOk(); }, STANDARD);
+  bench('neverthrow', () => { nt.isOk(); }, STANDARD);
+  bench('ts-results-es', () => { ts.isOk(); }, STANDARD);
+  bench('oxide.ts', () => { ox.isOk(); }, STANDARD);
+  bench('fp-ts', () => { E.isRight(fp); }, STANDARD);
+  bench('true-myth', () => { tm.isOk; }, STANDARD);
+});
+
+// ---------------------------------------------------------------------------
+// isOk — on Err variant
+// ---------------------------------------------------------------------------
+
+describe('Result.isOk — on Err', () => {
+  const nm = err('fail');
+  const nt = ntErr('fail');
+  const ts = TsErr('fail');
+  const ox = OxErr('fail');
+  const fp = E.left('fail');
+  const tm = TmResult.err<number, string>('fail');
+
+  bench('native-monad', () => { nm.isOk(); }, STANDARD);
+  bench('neverthrow', () => { nt.isOk(); }, STANDARD);
+  bench('ts-results-es', () => { ts.isOk(); }, STANDARD);
+  bench('oxide.ts', () => { ox.isOk(); }, STANDARD);
+  bench('fp-ts', () => { E.isRight(fp); }, STANDARD);
+  bench('true-myth', () => { tm.isOk; }, STANDARD);
+});
+
+// ---------------------------------------------------------------------------
+// isErr — on Err variant
+// ---------------------------------------------------------------------------
+
+describe('Result.isErr — on Err', () => {
+  const nm = err('fail');
+  const nt = ntErr('fail');
+  const ts = TsErr('fail');
+  const ox = OxErr('fail');
+  const fp = E.left('fail');
+  const tm = TmResult.err<number, string>('fail');
+
+  bench('native-monad', () => { nm.isErr(); }, STANDARD);
+  bench('neverthrow', () => { nt.isErr(); }, STANDARD);
+  bench('ts-results-es', () => { ts.isErr(); }, STANDARD);
+  bench('oxide.ts', () => { ox.isErr(); }, STANDARD);
+  bench('fp-ts', () => { E.isLeft(fp); }, STANDARD);
+  bench('true-myth', () => { tm.isErr; }, STANDARD);
+});