# notes: reading code from m1guel

**Published by:** [sweetman](https://paragraph.com/@sweetman/)
**Published on:** 2022-06-06
**URL:** https://paragraph.com/@sweetman/notes-reading-code-from-m1guel

## Content

why am I reading M1guel’s code?M1guel is building an app every day on Lens Protocol. I want to grow as a dev as well as understand web3 social media built in the Ethereum scaling ecosystem (Polygon sidechain). Instead of starting from zero, I want to study a successful dev who’s already laid down a base camp. https://twitter.com/StaniKulechov/status/1532452161258504205?s=20&t=e2DImCU-TAkSfoSIz3BM1Q Today I started by looking at M1guel’s Leaderboard app:Goal: filter the existing Leaderboard code to only show Lens Profiles that own a Mint Songs token.Leaderboard App: https://leaderboard.withlens.app/https://twitter.com/m1guelpf/status/1528787667957186562?s=20&t=e2DImCU-TAkSfoSIz3BM1QHow do I filter this on Mint Songs data?Okay, I obviously need to dig deeper into understanding the Typescript, but what’s my goal? I want to filter the existing Leaderboard code to only show Lens Profiles that own a Mint Songs token. How do I:Filter Lens Profiles based on NFT ownership?Add a “Mint Songs” tab to this list?Minimize the number of blockchain queries?Next Steps:Log the overall response from the current graphQL query.seek first to understand.Add a “Mint Songs” tab with no functionality.do the simplest thing that could possible work.Filter Lens Profiles based on NFT ownership.start with the end in mind.random thoughtsoh cool, localhost:3000, shows the same experience as prod.out-of-box perfection.super easy to start.Typescript - my nemesis.How should I respond? I’ll need to rip this out. Well, you say you like learning. What if you learned Typescript? just for this project, pretend Typescript is perfect & seek to understand.How does the Leaderboard query Lens Protocol?src/queries/explore-profiles.ts - uses graphQL.import { gql } from '@apollo/client'

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