initial commit

benchmarks/result/conversion.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,
+  pipe,
+  TmResult,
+} from '../helpers/imports.js';
+
+// ---------------------------------------------------------------------------
+// toNullable — success path
+// ---------------------------------------------------------------------------
+
+describe('Result.toNullable — Ok', () => {
+  const nm = ok(42);
+  const ox = OxOk(42);
+
+  bench('native-monad', () => { nm.toNullable(); }, STANDARD);
+  // neverthrow: no toNullable — use match or _unsafeUnwrap
+  // ts-results-es: no toNullable
+  bench('oxide.ts', () => { ox.into(); }, STANDARD);
+  bench('fp-ts', () => { pipe(E.right(42), E.toUnion); }, STANDARD);
+  bench('true-myth', () => { TmResult.ok<number, string>(42).isOk ? 42 : null; }, STANDARD);
+});
+
+// ---------------------------------------------------------------------------
+// toNullable — failure path
+// ---------------------------------------------------------------------------
+
+describe('Result.toNullable — Err', () => {
+  const nm = err('fail');
+  const ox = OxErr('fail');
+
+  bench('native-monad', () => { nm.toNullable(); }, STANDARD);
+  bench('oxide.ts', () => { ox.into(); }, STANDARD);
+  bench('fp-ts', () => { pipe(E.left('fail'), E.toUnion); }, STANDARD);
+});
+
+// ---------------------------------------------------------------------------
+// toString
+// ---------------------------------------------------------------------------
+
+describe('Result.toString — Ok', () => {
+  const nm = ok(42);
+  const ox = OxOk(42);
+
+  bench('native-monad', () => { nm.toString(); }, STANDARD);
+  // neverthrow: no toString
+  // ts-results-es: no toString
+  bench('oxide.ts', () => { ox.toString(); }, STANDARD);
+  // fp-ts: no toString
+  // true-myth: no toString
+});
+
+describe('Result.toString — Err', () => {
+  const nm = err('fail');
+  const ox = OxErr('fail');
+
+  bench('native-monad', () => { nm.toString(); }, STANDARD);
+  bench('oxide.ts', () => { ox.toString(); }, STANDARD);
+});