# @serenity-js/core > The core Serenity/JS framework, providing the Screenplay Pattern interfaces, as well as the test reporting and integration infrastructure Latest version **3.48.0** (published 2026-09-15) · Apache-2.0 license · 0 weekly downloads ## Install ```sh npm install @serenity-js/core pnpm add @serenity-js/core yarn add @serenity-js/core bun add @serenity-js/core ``` ## Health **Score 75/100 (B)** — status: active. Positive: has types; esm support; no vulnerabilities; has provenance; recently updated; high maintenance score; high quality score. Warnings: low downloads. ## Facts | | | |---|---| | Version | 3.48.0 | | Published | 2026-09-15 | | First published | 2017-05-20 | | Weekly downloads | 0 | | License | Apache-2.0 | | TypeScript types | bundled | | Module format | ESM + CommonJS | | Node | ^22.22.2 \|\| ^24.15.0 | | Dependencies | 11 | | Unpacked size | 2.9 MB | | Known vulnerabilities | 0 | | Install scripts | no | | Provenance | attested (GitHub Actions) | | GitHub stars | 617 | | Author | Jan Molak | | Maintainers | jan-molak | | Keywords | automation, integration, serenity, serenity-js, screenplay, screenplay-pattern, bdd, tdd, test, testing | ## Links - npm: https://www.npmjs.com/package/@serenity-js/core - Repository: https://github.com/serenity-js/serenity-js - Homepage: https://serenity-js.org - Issues: https://github.com/serenity-js/serenity-js/issues - Funding: https://github.com/sponsors/serenity-js - npm.io page: https://npm.io/package/@serenity-js/core ## Dependencies (11) - [diff](https://npm.io/package/diff.md) 8.0.4 - [chalk](https://npm.io/package/chalk.md) 4.1.2 - [upath](https://npm.io/package/upath.md) 3.0.8 - [semver](https://npm.io/package/semver.md) 7.8.5 - [fast-glob](https://npm.io/package/fast-glob.md) 3.3.3 - [filenamify](https://npm.io/package/filenamify.md) 4.3.0 - [tiny-types](https://npm.io/package/tiny-types.md) 2.0.5 - [graceful-fs](https://npm.io/package/graceful-fs.md) 4.2.11 - [error-stack-parser](https://npm.io/package/error-stack-parser.md) 2.1.4 - [@paralleldrive/cuid2](https://npm.io/package/@paralleldrive/cuid2.md) 2.3.1 - [validate-npm-package-name](https://npm.io/package/validate-npm-package-name.md) 8.0.0 ## Alternatives - [duck](https://npm.io/package/duck.md) — 4.2M weekly downloads - [ava](https://npm.io/package/ava.md) — 560.2K weekly downloads - [storybook-addon-module-mock](https://npm.io/package/storybook-addon-module-mock.md) — 71.7K weekly downloads - [vest](https://npm.io/package/vest.md) — 50.1K weekly downloads - [@ethereum-waffle/mock-contract](https://npm.io/package/@ethereum-waffle/mock-contract.md) — 40.0K weekly downloads ## Recent versions - 3.48.0 (latest) — 2026-09-15 - 2.0.1-alpha.131 (next) — 2020-02-03 - 3.47.2 — 2026-09-10 - 3.47.1 — 2026-09-10 - 3.47.0 — 2026-09-09 - 3.46.0 — 2026-08-30 - 3.45.9 — 2026-08-20 - 3.45.8 — 2026-08-20 - 3.45.7 — 2026-08-18 - 3.45.6 — 2026-08-15 - 3.45.5 — 2026-08-14 - 3.45.4 — 2026-08-13 - 3.45.3 — 2026-08-13 - 3.45.2 — 2026-08-13 - 3.45.1 — 2026-08-13 - … 430 more at https://npm.io/package/@serenity-js/core/versions ## README # Serenity/JS Core [![NPM Version](https://badge.fury.io/js/%40serenity-js%2Fcore.svg)](https://badge.fury.io/js/%40serenity-js%2Fcore) [![Build Status](https://github.com/serenity-js/serenity-js/actions/workflows/main.yaml/badge.svg?branch=main)](https://github.com/serenity-js/serenity-js/actions) [![Maintainability](https://qlty.sh/gh/serenity-js/projects/serenity-js/maintainability.svg)](https://qlty.sh/gh/serenity-js/projects/serenity-js) [![Code Coverage](https://qlty.sh/gh/serenity-js/projects/serenity-js/coverage.svg)](https://qlty.sh/gh/serenity-js/projects/serenity-js) [![Contributors](https://img.shields.io/github/contributors/serenity-js/serenity-js.svg)](https://github.com/serenity-js/serenity-js/graphs/contributors) [![Known Vulnerabilities](https://snyk.io/test/npm/@serenity-js/core/badge.svg)](https://snyk.io/test/npm/@serenity-js/core) [![GitHub stars](https://img.shields.io/github/stars/serenity-js/serenity-js?style=flat)](https://github.com/serenity-js/serenity-js) [![Follow Serenity/JS on LinkedIn](https://img.shields.io/badge/Follow-Serenity%2FJS%20-0077B5?logo=linkedin)](https://www.linkedin.com/company/serenity-js) [![Watch Serenity/JS on YouTube](https://img.shields.io/badge/Watch-@serenity--js-E62117?logo=youtube)](https://www.youtube.com/@serenity-js) [![Join Serenity/JS Community Chat](https://img.shields.io/badge/Chat-Serenity%2FJS%20Community-FBD30B?logo=matrix)](https://matrix.to/#/#serenity-js:gitter.im) [![Support Serenity/JS on GitHub](https://img.shields.io/badge/Support-@serenity--js-703EC8?logo=github)](https://github.com/sponsors/serenity-js) [`@serenity-js/core`](https://serenity-js.org/api/core/) provides foundational building blocks of the [Serenity/JS](https://serenity-js.org) ecosystem, enabling clean, expressive, and highly maintainable test automation based on the [Screenplay Pattern](https://serenity-js.org/handbook/design/screenplay-pattern/). This package provides APIs and extension points used across all [Serenity/JS modules](https://serenity-js.org/api/). ## Features - **Core APIs** for implementing the [Screenplay Pattern](https://serenity-js.org/handbook/design/screenplay-pattern/) in automated tests. - **Actor lifecycle and abilities management** for clear, maintainable test orchestration. - **Flexible integration points** with [test runners](https://serenity-js.org/handbook/test-runners/) and [reporting tools](https://serenity-js.org/handbook/reporting/). - **TypeScript-first design** with strong typing for safer and more predictable test code. ## Installation ```bash npm install --save-dev @serenity-js/core ```` See the [Serenity/JS Installation Guide](https://serenity-js.org/handbook/installation/). ## Quick Start ```ts import { actorCalled } from '@serenity-js/core' await actorCalled('Alice') .whoCan( // Add abilities ) .attemptsTo( // Add tasks and interactions ) ``` Explore practical examples and in-depth explanations in the [Serenity/JS Handbook](https://serenity-js.org/handbook/). ## Documentation - [Tutorial: First Web Scenario](https://serenity-js.org/handbook/tutorials/your-first-web-scenario/) - [Tutorial: First API Scenario](https://serenity-js.org/handbook/tutorials/your-first-api-scenario/) - [API Reference](https://serenity-js.org/api/) - [Screenplay Pattern Guide](https://serenity-js.org/handbook/design/screenplay-pattern/) - [Serenity/JS Project Templates](https://serenity-js.org/handbook/project-templates/) ## Contributing Contributions of all kinds are welcome! Get started with the [Contributing Guide](https://serenity-js.org/community/contributing/). ## Community - [Community Chat](https://matrix.to/#/#serenity-js:gitter.im) - [Discussions Forum](https://github.com/orgs/serenity-js/discussions) - Visit the [💡How to... ?](https://github.com/orgs/serenity-js/discussions/categories/how-to) section for answers to common questions If you enjoy using Serenity/JS, make sure to star ⭐️ [Serenity/JS on GitHub](https://github.com/serenity-js/serenity-js) to help others discover the framework! ## License The Serenity/JS code base is licensed under the [Apache-2.0](https://opensource.org/license/apache-2-0) license, while its documentation and the [Serenity/JS Handbook](https://serenity-js.org/handbook/) are licensed under the [Creative Commons BY-NC-SA 4.0 International](https://creativecommons.org/licenses/by-nc-sa/4.0/). See the [Serenity/JS License](https://serenity-js.org/legal/license/). ## Support Support ongoing development through [GitHub Sponsors](https://github.com/sponsors/serenity-js). Sponsors gain access to [Serenity/JS Playbooks](https://github.com/serenity-js/playbooks) and priority help in the [Discussions Forum](https://github.com/orgs/serenity-js/discussions). For corporate sponsorship or commercial support, please contact [Jan Molak](https://www.linkedin.com/in/janmolak/). [![GitHub Sponsors](https://img.shields.io/badge/Support%20@serenity%2FJS-703EC8?style=for-the-badge&logo=github&logoColor=white)](https://github.com/sponsors/serenity-js) --- _Source: https://npm.io/package/@serenity-js/core · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._