initial commit

benchmarks/option/from-wrapping.bench.ts

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+import { bench, describe } from 'vitest';
+import { STANDARD } from '../helpers/bench-options.js';
+import {
+  Option,
+  O,
+  TmMaybe,
+} from '../helpers/imports.js';
+
+// ---------------------------------------------------------------------------
+// Option.from — non-nullish value
+// ---------------------------------------------------------------------------
+
+describe('Option.from — non-nullish value', () => {
+  bench('native-monad', () => { Option.from(42); }, STANDARD);
+  bench('fp-ts', () => { O.fromNullable(42); }, STANDARD);
+  bench('true-myth', () => { TmMaybe.of(42); }, STANDARD);
+});
+
+// ---------------------------------------------------------------------------
+// Option.from — null value
+// ---------------------------------------------------------------------------
+
+describe('Option.from — null', () => {
+  bench('native-monad', () => { Option.from(null); }, STANDARD);
+  bench('fp-ts', () => { O.fromNullable(null); }, STANDARD);
+  bench('true-myth', () => { TmMaybe.of(null); }, STANDARD);
+});
+
+// ---------------------------------------------------------------------------
+// Option.from — undefined value
+// ---------------------------------------------------------------------------
+
+describe('Option.from — undefined', () => {
+  bench('native-monad', () => { Option.from(undefined); }, STANDARD);
+  bench('fp-ts', () => { O.fromNullable(undefined); }, STANDARD);
+  bench('true-myth', () => { TmMaybe.of(undefined); }, STANDARD);
+});
+
+// ---------------------------------------------------------------------------
+// Option.from — function that returns value
+// ---------------------------------------------------------------------------
+
+describe('Option.from — function returning value', () => {
+  const fn = () => 42;
+
+  bench('native-monad', () => { Option.from(fn); }, STANDARD);
+  // fp-ts: no function overload for fromNullable
+  // true-myth: no function overload for of
+});
+
+// ---------------------------------------------------------------------------
+// Option.from — function that returns null
+// ---------------------------------------------------------------------------
+
+describe('Option.from — function returning null', () => {
+  const fn = () => null;
+
+  bench('native-monad', () => { Option.from(fn); }, STANDARD);
+});