os.ts

/**
 * @file Early-snapshot accessor for `node:os`. See `node/fs.ts` for the shared
 *   rationale: the `require` runs at module load behind the runtime `IS_NODE`
 *   guard (false in browsers → never executes there), giving a load-time
 *   snapshot in Node while staying browser-safe. `getNodeOs()` returns the
 *   module object (late method lookup, spy-able); the frozen `os<Method>`
 *   snapshots below are the tamper-proof hot-path twin.
 */

// eslint-disable-next-line n/prefer-node-protocol
import type * as NodeOs from 'node:os'

import { IS_NODE } from '../constants/runtime'

// oxlint-disable-next-line unicorn/prefer-node-protocol -- bare specifier (not node:) so webpack resolve.fallback / browser-field can stub this builtin for browser bundles; node: prefix throws UnhandledSchemeError there
const nodeOs = IS_NODE ? /*@__PURE__*/ require('os') : undefined

export function getNodeOs(): typeof NodeOs {
  return nodeOs as typeof NodeOs
}

// ── Frozen hot-method snapshots ──────────────────────────────────────
// The fleet's hottest os methods, captured by reference at load off the
// IS_NODE-gated module (undefined in a browser). Frozen refs aren't spy-able —
// use `getNodeOs()` for the test-seam path. See node/fs.ts for the full
// two-surface rationale.
export const osArch = nodeOs?.arch
export const osHomedir = nodeOs?.homedir
export const osPlatform = nodeOs?.platform
export const osTmpdir = nodeOs?.tmpdir