nate-gehringer

Some Musings on Guard Clauses and Fault Tolerance

“Or: How I Learned to Stop Worrying and Love the Exception”

Background

I used to work at a healthcare technology company that was headed on the tech side by a database nut. The data model was both sprawling and very normalized (by that, I mean gnarly). We worked mainly in the exciting realm of medical billing and patient demographic data – particularly involving data with errors and omissions needing correction. Concordantly (😏), a large proportion of the relationships between tables were represented with nullable foreign keys.

Safe, Deeply-nested Logic

I often found myself working on code similar to this contrived simplification …

tombigel

/*!
 * Deep merge two or more objects together.
 * (c) 2019 Chris Ferdinandi, MIT License, https://gomakethings.com
 * @param   {Object}   objects  The objects to merge together
 * @returns {Object}            Merged values of defaults and options
 */
export function deepMerge(...args: any[]) {
  // Setup merged object
  const newObj: Record<string, any> = {};