This repository hosts well-written and tested formulas that you can use in JSON Column Formatting, SharePoint Calculated Column, Column Validation, and Project Server custom Fields.

SP2019 Search webpart (Search Box, Refiners/Filters, Pagination and Search Results)

SharePoint modern web-parts component: Table and Form

Copy large files from Source SharePoint library to Destination SharePoint library into small chunks.

Fully customizable SharePoint in one SPFx extension.