Do you follow naming conventions?

It's the most obvious - but naming conventions are so crucial to simpler code, it's crazy that people are so loose with them...

For Javascript / Typescript 

Google publishes a JavaScript style guide. For more guides, please refer to this link: Google JavaScript Style Guide

Here are some key points:

• Use const or let – Not var
• Use semicolons
• Use arrow functions
• Use template strings
• Use uppercase constants
• Use single quotes

See 13 Noteworthy Points from Google’s JavaScript Style Guide

For C# Java

See chapter 2: Meaningful Names Clean Code: A Handbook of Agile Software Craftsmanship

For SQL (see Rules to Better SQL Databases)

• SQL Server Object Naming Standard
• SQL Stored Procedure Naming Standard - Avoid System Prefixes
• SQL Server Indexes Naming Standard
• SQL Server Relationship Naming Standard