npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

@hediet/debug-visualizer-data-extraction

v0.14.0

Published

A library that helps implementing data extractors for the Debug Visualizer VS Code extension.

Downloads

36

Readme

@hediet/debug-visualizer-data-extraction

A library that helps implementing data extractors for the Debug Visualizer VS Code extension. It will automatically be injected by the extension when the debugger attaches. Compatible with NodeJS and browsers.

Installation

Use the following command to install the library using yarn:

yarn add @hediet/debug-visualizer-data-extraction

Usage

createGraphFromPointers Helper

import { createGraphFromPointers } from "@hediet/debug-visualizer-data-extraction";

setTimeout(() => {
	new Main().run();
}, 0);

class Main {
	run() {
		const list = new DoublyLinkedList("1");
		list.setNext(new DoublyLinkedList("2"));
		list.next!.setNext(new DoublyLinkedList("3"));
		list.next!.next!.setNext(new DoublyLinkedList("4"));

		// Watch `visualize()` with the Debug Visualizer Extension for VS Code!
		const visualize = () =>
			// Returns `CommonDataTypes.Graph` data which can be visualized by
			// either the vis.js or the graphviz visualizer.
			createGraphFromPointers({ list, last, cur }, i => ({
				id: i.id,
				label: i.name,
				color: finished.has(i) ? "lime" : undefined,
				edges: [
					{ to: i.next!, label: "next" },
					{ to: i.prev!, label: "prev", color: "lightgray" },
				].filter(r => !!r.to),
			}));

		const finished = new Set();
		var cur: DoublyLinkedList | undefined = list;
		// Reverses `list`. Finished nodes have correct pointers,
		// their next node is also finished.
		var last: DoublyLinkedList | undefined = undefined;
		while (cur) {
			cur.prev = cur.next;
			cur.next = last;
			finished.add(cur);
			last = cur;
			cur = cur.prev;
		}
		console.log("finished");
	}
}

let id = 0;
class DoublyLinkedList {
	public readonly id = (id++).toString();
	constructor(public name: string) {}

	next: DoublyLinkedList | undefined;
	prev: DoublyLinkedList | undefined;

	public setNext(val: DoublyLinkedList): void {
		val.prev = this;
		this.next = val;
	}
}

Registering Custom Data Extractors

import { getDataExtractorApi } from "@hediet/debug-visualizer-data-extraction";

getDataExtractorApi().registerExtractor({
	id: "my-foo-extractor",
	getExtractions: (data, collector) => {
		if (data instanceof Foo) {
			collector.addExtraction({
				id: "my-foo-extraction",
				name: "My Foo Extraction",
				priority: 2000,
				extractData: () => ({ kind: { text: true }, text: "Foo" }),
			});
		}
	},
});

setTimeout(() => {
	new Main().run();
}, 0);

class Foo {}

class Main {
	run() {
		const f = new Foo();
		// if `f` is watched by the Debug Visualizer,
		// `my-foo-extractor` will provide the data for the visualizers.
		// See `CommonDataTypes` for data types that have built in visualizers.
		debugger;
	}
}