Filtering Spans in TypeScript

// Keep only spans from the 'ai' scope
new LangWatchTraceExporter({
  filters: [{ include: { instrumentationScopeName: [{ equals: "ai" }] } }]
});

// Drop internal spans by name prefix
new LangWatchTraceExporter({
  filters: [{ exclude: { name: [{ startsWith: "internal." }] } }]
});

// equals (exact)
{ name: [{ equals: "chat.completion" }] }

// startsWith (prefix)
{ name: [{ startsWith: "chat." }] }

// matches (RegExp)
{ name: [{ matches: /^(GET|POST)\b/ }] }

// case-insensitive
{ name: [{ equals: "Chat.Completion", ignoreCase: true }] }

// name starts with chat. OR llm.
{ include: { name: [{ startsWith: "chat." }, { startsWith: "llm." }] } }

// scope is ai AND name starts with chat.
{ include: { instrumentationScopeName: [{ equals: "ai" }], name: [{ startsWith: "chat." }] } }

new LangWatchTraceExporter({
  filters: [
    { include: { instrumentationScopeName: [{ equals: "ai" }] } },
    { preset: "excludeHttpRequests" },
    { exclude: { name: [{ matches: /test/ }] } }
  ]
});

import { setupObservability } from "langwatch/observability/node";
import { LangWatchTraceExporter } from "langwatch";

setupObservability({
  // We are specifying a custom trace exporter, so we need to disable default
  // integration to prevent double exporting
  langwatch: "disabled",
  traceExporter: new LangWatchTraceExporter({
    filters: [{ preset: "excludeHttpRequests" }]
  })
});

import type { TraceFilter, Criteria, Match } from "langwatch";