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@better-seo/core

v0.0.2

Published

Framework-agnostic SEO core for JavaScript and TypeScript: build a canonical SEO document with createSEO and mergeSEO, emit HTML-safe JSON-LD via serializeJSONLD, validate in development, render plain meta tag descriptors, and plug in frameworks through a

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@better-seo/core

npm License: MIT CI

Framework-agnostic SEO document model for JavaScript and TypeScript: merge partial inputs into a canonical SEO, serialize HTML-safe JSON-LD, validate in development, render vanilla tag descriptors, and register framework adapters. Zero runtime npm dependencies so Node, Edge, and browser bundles stay light.

Docs: Monorepo README · Recipes · CONTRIBUTING

Install

npm install @better-seo/core

Use with @better-seo/next or your own adapter; OG/icon generation stays in @better-seo/assets / @better-seo/cli.

What you get

| Area | Exports (high level) | | ------------------- | --------------------------------------------------------------------------- | | Model | createSEO, mergeSEO, withSEO, types SEO, SEOInput, SEOConfig, … | | JSON-LD | serializeJSONLD, schema helpers (webPage, article, organization, …) | | Head (vanilla) | renderTags | | Quality | validateSEO, ValidationIssueCode, … | | Extensibility | defineSEOPlugin, registerAdapter, getAdapter, applyRules, … | | Context | createSEOContext (preferred for Edge / multi-tenant) | | Global (legacy) | initSEO, getGlobalSEOConfig — see USAGE warnings | | Orchestration | seoForFramework, useSEO (stub until @better-seo/react) | | Errors | SEOError, isSEOError |

Full API surface is src/index.ts (published as dist/index.*).

Scripts (monorepo)

From packages/core:

npm run build          # tsup → dist/
npm run test           # vitest run
npm run test:coverage  # vitest + coverage thresholds (CI gate)
npm run lint
npm run typecheck
npm run size           # size-limit on dist/index.js

From repository root, core is built as part of npm run build / npm run check.

Coverage

vitest.config.ts enforces V8 coverage on src/**/*.ts (excluding tests, index.ts, types.ts).

| Metric | Minimum | | -------------- | ------- | | Lines | 90% | | Statements | 90% | | Functions | 88% | | Branches | 80% |

CI runs npm run test:coverage via the root check script. LCov output: coverage/lcov.info (also uploaded from GitHub Actions for @better-seo/core).

Size budget

Configured in package.json → size-limit (tracked in npm run ci at monorepo root).

License

MIT — see LICENSE.