# 1loc.dev

> Small code. Working integrations. A JavaScript library and practical email integration recipes maintained by Oveyon.

Examples use local fixtures. Authenticated API and real-delivery verification have not been performed for this edition. The public site never sends email.

## Start here
- [Library](https://1loc.dev/library/): 323 curated JavaScript functions with limits: all 313 pages of the original 1loc collection (MIT, attributed), restored at their original addresses, and 10 email-integration utilities written by Oveyon. 245 run in a local lab; 78 need the DOM, callbacks or timers and show usage executed in Node.js or Chromium.
- [Email utilities](https://1loc.dev/email/): SMTP replies, DMARC records, domains, masking, normalization, Retry-After, backoff and idempotency keys for code that sends email.
- [One-line sheet as Markdown](https://1loc.dev/library/cheatsheet.md): every utility in one compact file.
- [Recipes](https://1loc.dev/recipes/): five complete Node.js/TypeScript starters.
- [One-line sheet](https://1loc.dev/library/cheatsheet/): every curated utility as the exact code, on one page.
- [Labs](https://1loc.dev/labs/): local code, deterministic builder, virtual delivery simulation and a webhook signature lab.
- [Methodology](https://1loc.dev/methodology/): evidence levels and limitations.
- [For agents](https://1loc.dev/agents/): formats and retrieval tasks.

## Machine-readable interfaces
- [Recipe manifest](https://1loc.dev/recipes-manifest.json): schemaVersion 1.0.0, project-specific.
- [Recovery manifest](https://1loc.dev/recovery-manifest.json): provenance and explicit unknowns.
- [Send your first transactional email](https://1loc.dev/context/transactional-email.md): complete files and execution effects.
- [Confirm an order without a duplicate retry](https://1loc.dev/context/order-confirmation.md): complete files and execution effects.
- [Send a welcome email from a pinned template](https://1loc.dev/context/versioned-template.md): complete files and execution effects.
- [Track recipient delivery with a signed webhook](https://1loc.dev/context/delivery-webhook.md): complete files and execution effects.
- [Check disposable domains during sign-up](https://1loc.dev/context/disposable-domain.md): complete files and execution effects.

## Attribution
- [Sources and licenses](https://1loc.dev/licenses/): original collection by Nguyen Huu Phuoc and contributors; maintained edition by Oveyon.