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unjs/std-env

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1 updates · last 90 days1 watchersOpen source

Last release: 1 month ago

std-env provides runtime-agnostic JavaScript utilities for detecting the current JavaScript runtime, CI/CD provider, and whether the code is running inside an AI coding agent. It also includes environment and platform flags (such as TTY availability, CI, development/production mode, and OS) that can be used by CLI or app code to adapt behavior.

Project status

  • Actively maintained: The repo has a very recent upstream push (2026-06-07), and it has had multiple versioned updates in 2026 (v4.0.0-rc.1, v4.0.0, v4.1.0).
  • Update/release cadence (apparent): An RC appeared on 2026-02-17, followed by the finalized v4.0.0 on 2026-03-10, then v4.1.0 on 2026-04-15 (roughly 3 to 5 week intervals for these visible tags).

AI summary generated Today

AI-generated from public sources. May be inaccurate. Report

Recent updates

  • v4.1.0

    1 month ago

    std-env v4.1.0 adds support for detecting the EdgeOne Pages CI environment. The change extends the internal provider mapping and the exported ProviderName union to include the new provider. No other code behavior changes are visible in the provided diff.

    Features

  • v4.0.0

    3 months ago

    Release v4.0.0 finalizes the previously published v4.0.0-rc.1 version and updates the package metadata. The code diff provided shows mostly documentation-level changes (types/comments, README/CHANGELOG wording) plus an apparent addition of a runtime-agnostic `process` shim export in `src/env.ts`.

    Features

  • v4.0.0-rc.1

    3 months ago

    This release introduces AI coding agent detection and adds support for `MODE` when determining `isDevelopment` and `isProduction`. It also performs a major modernization refactor that removes the previous env/process shim implementation and switches the build output to ESM-only.

    BreakingFeatures

  • v3.10.0

    7 months ago

    v3.10.0 adds runtime and provider detection improvements, specifically for DENO_DEPLOY (Deno Deploy EA) and Google Cloud Run/Jobs. The release notes also mention stricter type checks and switching the package to ESM via package.json "type": "module". The code diff shows additional build and TypeScript/module-resolution related changes that are not fully captured in the release notes.

    BreakingFeatures

  • v3.9.0

    4/3/2025

    Release v3.9.0 adds Cloudflare Workers CI detection by extending the set of known CI providers. In addition to that small runtime-facing change, the release updates multiple development toolchain dependencies and the pnpm package manager version.

    BreakingFeatures

  • v3.8.1

    3/3/2025

    Release v3.8.1 primarily updates std-env's provider detection to recognize the CODESANDBOX_HOST environment variable. The code diff also includes CI/development workflow adjustments and a set of devDependency and tooling version bumps (including pnpm), which are not fully captured in the provided release notes.

  • v3.8.0

    11/8/2024

    v3.8.0 adds runtime provider detection for Deno Deploy and Firebase App Hosting. It also removes support for the Lagon runtime. Several build and tooling/development dependencies were updated as part of the release.

    BreakingFeatures

  • v3.7.0

    12/22/2023

    v3.7.0 adds detection for the Railway deployment provider and improves runtime detection so Bun is prioritized over Node. It also clarifies the semantics of the `isNode` flag, especially when Bun or Deno run with Node.js compatibility mode.

    Features

  • v3.6.0

    12/1/2023

    v3.6.0 adds support for two new hosted execution providers, zeabur and codesphere, and includes a small type improvement for the exported runtime value. It also changes the environment-based logic used to decide whether ANSI color output should be enabled.

    Features

  • v3.5.0

    11/14/2023

    This release primarily documents adding a new runtime CI provider for AWS Amplify. The code diff confirms the new provider and associated environment variable mapping, but it also includes additional changes (type surface area, CI workflow action upgrades, and significant devDependency updates) that are not mentioned in the release notes.

    BreakingFeatures