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The official javascript, TypeScript, and NodeJS integration for Ray.

The package can be installed in any NodeJS, ES6+, or TypeScript application to send messages to the Ray app.

It is recommended that you immediately update to v1.20.11 or higher.

Versions 1.19.6 through 1.20.10 are broken and will not function correctly.


Install with npm:

npm install node-ray

or yarn:

yarn add node-ray

Available environments

node-ray offers several variants to allow you to use it in either NodeJS or Browser environments.

If you're using NextJs/React, take a look at permafrost-dev/react-ray.

If you're using Vue, check out permafrost-dev/vue-ray.


When using in a NodeJS environment (the default), import the package as you would normally:

// es module import:
import { ray } from 'node-ray';

// commonjs import:
const ray = require('node-ray').ray;

Browser bundle

When bundling scripts for use in a Browser environment (i.e., using webpack), import the /web variant:

// es module import:
import { ray } from 'node-ray/web';

// commonjs import:
const { ray } = require('node-ray/web');

Browser standalone

Important Note - As of version 1.20.6, you should no longer include axios as a separate <script> tag.

It is now included in the standalone build.

node-ray may be directly used within a web page via a script tag. The standalone version includes all required libraries, including axios.

<script src=""></script>
    window.ray = Ray.ray;
    window.Ray = Ray.Ray;

Recommended Standalone Initialization

As of version 1.20.3, you may use the rayInit() method instead of manually assigning properties to the window global object. rayInit() is simply a wrapper around the above method to provide a better developer experience as well as more succinct and readable code:

<script src=""></script>
    ray('hello world');

Regardless of the method used for initialization, the ray() helper function and the Ray class will now available in all scopes via the global window object.

Laravel Mix

To use node-ray with Laravel Mix, include the following in resources/js/bootstrap.js:

const { ray } = require('node-ray/web');

window.ray = ray;

Compile the bundle _(npm run dev)_as usual. After including js/app.js in your view, you may access ray() within your scripts.

Laravel + Vite

To use node-ray with Laravel + Vite, include the following in resources/js/bootstrap.js:

import { ray } from 'node-ray/web';

window.ray = ray;

ray() is immediately available to other scripts such as app.js, however note that window.ray() is NOT immediately available in <script> tags embedded in the view.


Most of the API from the original PHP package is supported. See the api reference for more information.

// es module import:
import { ray } from 'node-ray';

// commonjs import:
const { ray } = require('node-ray');

To modify the host or port:

// make sure you import the Ray class (capital "R")
const { Ray, ray } = require('node-ray');

Ray.useDefaultSettings({ host: '', port: 3000 });

// or just modify the port:
Ray.useDefaultSettings({ port: 3000 });

// ...and use ray() as normal
ray('a string');

ray(['several', 'arguments'], 'can', {be: provided});

ray().table(['one two', {a: 100, b: 200, c: 300}, [9, 8, 7]]).blue();

ray().html('<em>large text</em>').large().green();



ray().disable(); // disable sending data to Ray at runtime

ray().xml('<one>11</one>'); // disabled, data not sent to Ray


NodeJS config

Note: This section only applies when using node-ray in the NodeJS environment, NOT a browser environment.

node-ray will search for ray.config.js, which should be in the project's root directory.

Using a configuration file is optional, and the package will use the default settings if no configuration file is specified.


// ray.config.js

module.exports = {
    enable: true,
    host: 'localhost',
    port: 23517,
    scheme: 'http', //only change this if you know what you're doing!

    // calls to console.log() are redirected to Ray
    intercept_console_log: true,

    // determine the enabled state using the specified callback
    // the 'enable' setting is also considered when using this setting.
    enabled_callback: () => {
        return functionThatReturnsABoolean();

    sending_payload_callback: (rayInstance, payloads) => {
        if (payloads[0].getType() === 'custom') {
            payloads[0].html += ' <strong>- modified!</strong>';

    sent_payload_callback: (rayInstance) => {
        // automatically make all payloads sent to Ray green.;

When running node-ray within a NodeJS environment, you may set the environment variable NODE_ENV to "production" or "staging" to disable sending data to Ray from calls to ray().

Browser config

This section only applies within a browser environment (i.e., webpack).

You can configure node-ray by importing the Ray class and calling the useDefaultSettings() method.

const { Ray, ray } = require('node-ray/web');

// set several settings at once:
    host: '',
    port: 23517

// or set individual settings only:
Ray.useDefaultSettings({ port: 23517 });

// use ray() normally:
ray().html('<strong>hello world</strong>');

These settings persist across calls to ray(), so they only need to be defined once.

Enabled state

If providing a callback for the enabled_callback setting (a function that returns a boolean), payloads will only be sent to Ray if:

  • the enable setting is set to true.
  • the callback returns a value of true.

If either condition is false, then no payloads will be sent to Ray.

Set the enabled_callback setting to null or leave it undefined to consider the enable setting (the default).

Sending/sent payload callbacks

Specify the sending_payload_callback or sent_payload_callback settings to trigger a callback before (sending) or after (sent) sending a payload.

This feature is helpful when sending additional payloads or modifying all payloads (i.e., changing the color).


This package attempts to replicate the entire PHP API for Ray to provide a robust solution for debugging NodeJS projects.

How is this different from js-ray?

This package is a more comprehensive implementation written in Typescript, and its primary use case is for NodeJS projects, although it also works within browser environments.

The codebase was translated to Typescript directly from spatie/ray.

As a result, node-ray implements most features in the original package; js-ray does not.

However, we did draw some inspiration for portions of the code from js-ray.

Using the package

See using the package.


Call Description
ray(variable) Display a string, array or object
ray(var1, var2, …) Ray accepts multiple arguments
ray(…).blue() Output in color. Use green, orange, red, blue,purple or gray
ray().caller() Show the calling class and method
ray().clearScreen() Clear current screen
ray().clearAll() Clear current and all previous screens
ray().className(obj) Display the classname for an object
ray().confetti() Display Confetti in Ray
ray().count(name) Count how many times a piece of code is called, with optional name
ray().date(date, format) Display a formatted date, the timezone, and its timestamp
ray().die() Halt code execution - NodeJS only
ray().disable() Disable sending stuff to Ray
ray().disabled() Check if Ray is disabled
ray().enable() Enable sending stuff to Ray
ray().enabled() Check if Ray is enabled
ray().error(err) Display information about an Error/Exception
ray().event(name, data) Display information about an event with optional data
ray().exception(err) Display extended information and stack trace for an Error/Exception
ray().file(filename) Display contents of a file - NodeJS only
ray(…).hide() Display something in Ray and make it collapse immediately
ray().hideApp() Programmatically hide the Ray app window
ray().html(string) Send HTML to Ray
ray().htmlMarkup(string) Display syntax-highlighted HTML code in Ray
ray().if(true, callback) Conditionally show things based on a truthy value or callable, optionally calling the callback with a ray argument
ray().image(url) Display an image in Ray
ray().interceptor() Access ConsoleInterceptor; call .enable() to show console.log() calls in Ray
ray().json([…]) Send JSON to Ray
ray().label(string) Add a text label to the payload
ray().limit(N).… Limit the number of payloads that can be sent to Ray to N; used for debugging within loops
ray().macro(name, callable) Add a custom method to the Ray class. make sure not to use an arrow function if returning this
ray().measure(callable) Measure the performance of a callback function
ray().measure() Begin measuring the overall time and elapsed time since previous measure() call
ray().newScreen() Start a new screen
ray().newScreen('title') Start a new named screen
ray().nodeinfo() Display statistics about node, such as the v8 version and memory usage (NodeJS only)
ray(…).notify(message) Display a notification
ray().once(arg1, …) Only send a payload once when in a loop
ray(…).pass(variable) Display something in Ray and return the value instead of a Ray instance
ray().pause() Pause code execution within your code; must be called using await
ray().projectName(name) Change the active project name
ray(…).remove() Remove an item from Ray
ray(…).removeIf(true) Conditionally remove an item based on a truthy value or callable
ray(…).removeWhen(true) Conditionally remove an item based on a truthy value or callable
ray(…).screenColor(color) Changes the screen color to the specified color
ray(…).separator() Display a separator
ray().showApp() Programmatically show the Ray app window
ray(…).showIf(true) Conditionally show things based on a truthy value or callable
ray(…).showWhen(true) Conditionally show things based on a truthy value or callable
ray(…).small() Output text smaller or bigger. Use large or small
ray().stopTime(name) Removes a named stopwatch if specified, otherwise removes all stopwatches
ray().table(…) Display an array or an object formatted as a table; Objects and arrays are pretty-printed
ray().text(string) Display raw text in Ray while preserving whitespace formatting
ray().trace() Display a stack trace
ray().xml(string) Send XML to Ray


  • Is node-ray only for NodeJS? Not at all! It can be used in a web environment with javascript as well.

  • Can node-ray be used with React/Vue? yes, be sure to import node-ray/web

  • Can node-ray be used if I am using webpack? yes, be sure to import node-ray/web

Development setup

  • npm install
  • npm run build:all
  • npm run test
  • node build/test.js

Code Coverage Details

codecov graph codecov graph


node-ray uses Jest for unit tests. To run the test suite:

npm run test

To update the test snapshots:

npm run test -- -u


Please see CHANGELOG for more information on what has changed recently.

Security Vulnerabilities

Please review our security policy on how to report security vulnerabilities.



The MIT License (MIT). Please see License File for more information.