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fast-check Blog

fast-check.dev

fast-check Blog, “fast-check official documentation”, is a tech site on fast-check.dev, in English, funded by its readers: 9 people pay through GitHub Sponsors + Open Collective, as the platform publishes it.

fast-check is a property-based testing library for JavaScript and TypeScript, with documentation and blog posts by maintainer Nicolas Dubien.

Visit fast-check BlogSupport on GitHub SponsorsSupport on Open Collective

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Latest posts

From the site's feed, read 2026-10-21.

Pages

75 pages indexed; the pages that lead the site by its internal links:

Race conditions | fast-check
https://fast-check.dev/docs/advanced/race-conditions/
What's new in fast-check 4.9.0? | fast-check
https://fast-check.dev/blog/2026/07/24/whats-new-in-fast-check-4-9-0/
What's new in fast-check 3.12.0? | fast-check
https://fast-check.dev/blog/2023/07/24/whats-new-in-fast-check-3-12-0/
Model based testing | fast-check
https://fast-check.dev/docs/advanced/model-based-testing/
What's new in fast-check 3.9.0? | fast-check
https://fast-check.dev/blog/2023/05/21/whats-new-in-fast-check-3-9-0/
What's new in fast-check 4.5.0? | fast-check
https://fast-check.dev/blog/2026/01/15/whats-new-in-fast-check-4-5-0/
Dual packages or supporting both CJS and ESM | fast-check
https://fast-check.dev/blog/2023/09/04/dual-packages-or-supporting-both-cjs-and-esm/
What's new in fast-check 4.0.0? | fast-check
https://fast-check.dev/blog/2025/03/10/whats-new-in-fast-check-4-0-0/
What's new in fast-check 3.23.0? | fast-check
https://fast-check.dev/blog/2024/11/05/whats-new-in-fast-check-3-23-0/
What's new in fast-check 4.6.0? | fast-check
https://fast-check.dev/blog/2026/03/09/whats-new-in-fast-check-4-6-0/
Fake data | fast-check
https://fast-check.dev/docs/advanced/fake-data/
Beyond flaky tests — Bringing Controlled Randomness to Vitest | fast-check
https://fast-check.dev/blog/2025/03/28/beyond-flaky-tests-bringing-controlled-randomness-to-vitest/

Standing

category techlang enrank 24350 of 98599paying 9 GitHub Sponsors + Open Collectiverevenue / yr $123 Open Collective

Verified funding

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For the site's owner: a badge that says readers fund it, linked to this page. It shows the live figure, so it never goes stale; the count is the one the platform publishes.

Reader-funded: 9 paying supporters on GitHub Sponsors + Open Collective, verified by ReaderFunded

HTML

<a href="https://readerfunded.com/site/fast-check.dev"><img src="https://readerfunded.com/badge/fast-check.dev.svg" alt="Reader-funded: 9 paying supporters on GitHub Sponsors + Open Collective, verified by ReaderFunded" height="20"></a>

Markdown

[![Reader-funded: 9 paying supporters on GitHub Sponsors + Open Collective, verified by ReaderFunded](https://readerfunded.com/badge/fast-check.dev.svg)](https://readerfunded.com/site/fast-check.dev)

Neighbourhood

Linked from 90 domains, links to 44; of the latter, the funded sites are shown. Funded sites first, then the sources that link to fewest other funded sites. Links as seen in the Common Crawl domain graph (cc-main-2026-aug-sep-oct), cut 2026-10-23: the pages crawled in a window of three months, not necessarily the site of today, and a page not crawled in that window leaves no link.

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