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Elysia plugin for accept headers parsing and content negotiation

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elysia-accepts

Plugin for Elysia for content negotiation based on Accept headers based on @tinyhttp/accepts which is based on old good negotiator.

Installation

bun a elysia-accepts
import { accepts } from "elysia-accepts";

const app = new Elysia()
  .use(accepts());

No options currently available and plugin is always registered in global scope.

Context

Type

const app = new Elysia()
  .use(accepts())
  .get("/", (ctx) => ctx.type("text/html")); // Returns "html" if acceptable
const app = new Elysia()
  .use(accepts())
  .get("/", (ctx) => ctx.type(["text/html", "application/json"]));
  // Returns the first acceptable or false if none
const app = new Elysia()
  .use(accepts())
  .get("/", (ctx) => ctx.type(["html", "json"]));
  // Can pass file extension. In this case "html" returned if acceptable.
const app = new Elysia()
  .use(accepts())
  .get("/", (ctx) => ctx.types); // Returns the list of all acceptable encodings

Encoding

const app = new Elysia()
  .use(accepts())
  .get("/", (ctx) => ctx.encoding("gzip")); // Returns "gzip" if acceptable
const app = new Elysia()
  .use(accepts())
  .get("/", (ctx) => ctx.encoding(["gzip", "deflate"])); // Returns the first acceptable or false if none
const app = new Elysia()
  .use(accepts())
  .get("/", (ctx) => ctx.encodings); // Returns the list of all acceptable encodings

Languages

const app = new Elysia()
  .use(accepts())
  .get("/", (ctx) => ctx.language("en")); // Returns "en" if acceptable
const app = new Elysia()
  .use(accepts())
  .get("/", (ctx) => ctx.language(["en", "ru"])); // Returns the first acceptable or false if none
const app = new Elysia()
  .use(accepts())
  .get("/", (ctx) => ctx.languages); // Returns the list of all acceptable languages

Guard

Per Route

const app = new Elysia()
  .use(accepts())
  .get("/", (ctx) => 'hi', { types: ['text/plain'] });
  // Returns 406 if plain text is not acceptable

Global

const app = new Elysia()
  .use(accepts())
  .guard({ types: ['text/plain'] })
  .get("/", (ctx) => 'hi');
  // Returns 406 if plain text is not acceptable

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Elysia plugin for accept headers parsing and content negotiation

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