@coherent.js/fastify

Fastify adapter for Coherent.js.

• ESM-only, Node 20+
• Works with [email protected]
• Designed to pair with @coherent.js/core

For a high-level overview and repository-wide instructions, see the root README: ../../README.md

Installation

pnpm add @coherent.js/fastify fastify @coherent.js/core

Peer dependencies:

• fastify >= 4 < 6
• @coherent.js/core

Exports

Fastify adapter for Coherent.js

Modular Imports (Tree-Shakable)

• Fastify integration: @coherent.js/fastify
• Handler creation: @coherent.js/fastify

Example Usage

import { setupCoherent } from '@coherent.js/fastify';
import { createHandler } from '@coherent.js/fastify';

Note: All exports are tree-shakable. Import only what you need for optimal bundle size.

Quick start

You can use @coherent.js/core rendering inside Fastify route handlers.

JavaScript (ESM):

import Fastify from 'fastify';
import { renderToString } from '@coherent.js/core';

const app = Fastify();

app.get('/', async (_req, reply) => {
  const html = await renderToString({ div: { text: 'Hello from Fastify + Coherent' } });
  reply.type('text/html').send(html);
});

app.listen({ port: 3000 });

TypeScript:

import Fastify, { FastifyRequest, FastifyReply } from 'fastify';
import { renderToString } from '@coherent.js/core';

const app = Fastify();

app.get('/', async (_req: FastifyRequest, reply: FastifyReply) => {
  const html = await renderToString({ div: { text: 'Hello TS' } });
  reply.type('text/html').send(html);
});

app.listen({ port: 3000 });

Development

pnpm --filter @coherent.js/fastify run test
pnpm --filter @coherent.js/fastify run test:watch
pnpm --filter @coherent.js/fastify run typecheck
pnpm --filter @coherent.js/fastify run build

License

MIT © Coherent.js Team