Before you invest in web components

The gap between knowing this and actually doing it is where most teams lose ground. Before you spend anything on web components, it is worth confirming a few things are already true.

Code gets read far more often than it gets written, and usually by someone with less context than the author had. Doing this properly once is usually cheaper than doing it approximately three times.

Prerequisites

• You can describe the outcome you want in one sentence
• Someone owns it after the work is done
• Custom elements work without committing to a framework
• You have a way to tell whether it worked

The mistakes we see most

Encapsulation stops styles leaking between features. None of that requires a large budget, only a decision and someone to own it. Assume whoever inherits this will have half your context and none of your patience.

Useful when several teams share one component set. It is worth being explicit about, because assumptions differ quietly. Write the reasoning down alongside the decision, because the reasoning is what changes first.

The short version

Most development decisions are really maintenance decisions wearing a different hat. Three things worth confirming about web components before you move on:

• Someone can say what the current setup is without going to look
• Useful when several teams share one component set — and you know whether that is true here
• There is a way to tell whether the last change to this helped

The point is not perfection, it is knowing which of these you have consciously chosen to skip.