treblle

The official Treblle SDK for JavaScript frameworks including Koa. Seamlessly integrate Treblle to manage communication with your dashboard, send errors, and secure sensitive data.

Treblle with Koa

To integrate Treblle with Koa, we provide an official unified SDK for JavaScript frameworks - treblle-node.

Requirements

Node.js: >=18.0.0
Koa: 2.x or 3.x

Installation


npm install treblle@^2.0.0

Don’t forget to load the required modules in your app file:


const Koa = require("koa");
const { koaTreblle } = require("treblle");

Setting up credentials

Create a free account on treblle.com to get your credentials:

sdkToken (SDK Token)
apiKey (API Key)

Add these to your .env file:


TREBLLE_SDK_TOKEN=your_sdk_token
TREBLLE_API_KEY=your_api_key

Basic Setup

Initialize Treblle in your application:


const Koa = require("koa");
const KoaRouter = require("koa-router");
const KoaBody = require("koa-body");
const { koaTreblle } = require("treblle");
 
const app = new Koa();
const router = new KoaRouter();
 
// Treblle middleware (add before body parsing)
app.use(
  koaTreblle({
    sdkToken: process.env.TREBLLE_SDK_TOKEN,
    apiKey: process.env.TREBLLE_API_KEY,
  })
);
 
// Body parsing
app.use(KoaBody());
 
// Routes
router.get("/api/users", (ctx) => {
  ctx.body = { users: [] };
});
 
app.use(router.routes());
app.listen(3000);

Tip

That’s it! Your API requests and responses are now being sent to your Treblle Dashboard. You’ll get features like auto-documentation, real-time request/response monitoring, and error tracking.

Configuration Options

You can pass additional configuration options:


app.use(
  koaTreblle({
    sdkToken: process.env.TREBLLE_SDK_TOKEN,
    apiKey: process.env.TREBLLE_API_KEY,
    additionalFieldsToMask: ["customSecret", "internalId"], // Optional
    blocklistPaths: ["admin", "health"], // Optional: Skip logging certain paths
    ignoreDefaultBlockedPaths: false, // Optional: Disable default blocked paths
    debug: true, // Optional: Show Treblle errors in console
  })
);

Available options:

Option

Description

sdkToken (required)

Your Treblle SDK token

apiKey (required)

Your Treblle API key

additionalFieldsToMask (optional)

Array of field names to mask in addition to default fields

blocklistPaths (optional)

Array of path prefixes or RegExp to exclude from logging

ignoreDefaultBlockedPaths (optional)

Boolean to disable default blocked paths (default: false)

debug (optional)

Boolean to show Treblle-related errors in console (default: false)

Production-only Setup

Run Treblle only in production:


const app = new Koa();
 
if (process.env.NODE_ENV === "production") {
  app.use(
    koaTreblle({
      sdkToken: process.env.TREBLLE_SDK_TOKEN,
      apiKey: process.env.TREBLLE_API_KEY,
    })
  );
}

Masking Sensitive Data

The following fields are automatically masked:

password, pwd, secret, password_confirmation, passwordConfirmation
cc, card_number, cardNumber, ccv
ssn
credit_score, creditScore

Add custom fields to mask:


app.use(
  koaTreblle({
    sdkToken: process.env.TREBLLE_SDK_TOKEN,
    apiKey: process.env.TREBLLE_API_KEY,
    additionalFieldsToMask: ["customSecret", "licensee_key"],
  })
);

Debugging

Enable debug mode to see Treblle errors in your console:


app.use(
  koaTreblle({
    sdkToken: process.env.TREBLLE_SDK_TOKEN,
    apiKey: process.env.TREBLLE_API_KEY,
    debug: true,
  })
);

Treblle Docs