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@angelitosystems/devtools-core

v2.0.1

Published

Transport, request context, source-map resolution and metrics for NestJS DevTools.

Readme

@angelitosystems/devtools-core

Componentes independientes del framework para construir integraciones con NestJS DevTools.

devtools-core proporciona el transporte WebSocket, el contexto de peticiones, la configuracion, las metricas y el singleton interno que utiliza el SDK de NestJS.

Instalacion

npm install @angelitosystems/devtools-core
bun add @angelitosystems/devtools-core

Para una aplicacion NestJS normal, instala @angelitosystems/nest-devtools en lugar de utilizar este paquete directamente.

API principal

  • DevToolsTransport: conexion WebSocket con reintentos, buffer acotado, batching y backpressure.
  • requestContext(): contexto basado en AsyncLocalStorage para correlacionar eventos con una peticion.
  • resolveConfig() y DevToolsUserConfig: configuracion desde opciones y variables de entorno.
  • devtools: singleton interno que inicializa el transporte y publica eventos.
  • getProcessMetrics() y utilidades de metricas de rendimiento.
  • Utilidades de localizacion de origen para stacks y enlaces de editor.

Contexto de peticiones

import { requestContext } from '@angelitosystems/devtools-core';

const context = requestContext();

context.run(
  { requestId: 'req_123', method: 'GET', url: '/cats', startedAt: Date.now() },
  () => {
    console.log(context.requestId());
    context.patch({ userId: 'user_42' });
  },
);

Fuera de una peticion, current() y requestId() devuelven undefined.

Transporte WebSocket

import { DevToolsTransport } from '@angelitosystems/devtools-core';

const transport = new DevToolsTransport('ws://localhost:4318', {
  projectId: 'catalog-api',
});

transport.start();
transport.send('log.created', {
  projectId: 'catalog-api',
  level: 'info',
  message: 'ready',
  processId: process.pid,
  timestamp: Date.now(),
});

transport.stop();

El transporte no bloquea la aplicacion, conserva una cantidad limitada de eventos cuando el servidor esta desconectado y reintenta con backoff. Los eventos se tipan con @angelitosystems/devtools-protocol.

Configuracion

import { resolveConfig } from '@angelitosystems/devtools-core';

const config = resolveConfig({
  project: 'catalog-api',
  server: 'ws://localhost:4318',
  sampling: 0.5,
  capture: { logs: true, requests: true },
});

Tambien admite NEST_DEVTOOLS_URL, NEST_DEVTOOLS_PROJECT, NEST_DEVTOOLS_ENABLED, NEST_DEVTOOLS_ENV, NEST_DEVTOOLS_SAMPLING y NEST_DEVTOOLS_TOKEN.

Desarrollo

bun run --cwd packages/core build
bun test packages/core

Licencia

MIT. Consulta docs/architecture.md para el diseno del transporte y la relacion entre paquetes.