🧹 Add checks for duplicate HTML element IDs#6055
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In the course of investigating other issues, I've found that we are emitting invalid HTML. For example, multiple elements with the same `id="..."` attribute. This doesn't cause loud errors in the browser, but interferes with the proper functioning HTML selectors and Cypress tests don't always behave like they should. Add the start of a postprocessing step where we are going to validate the HTML that is generated in Flask templates and crash loudly if it is illegal.
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In the course of investigating other issues, I've found that we are emitting invalid HTML. For example, multiple elements with the same
id="..."attribute.This doesn't cause loud errors in the browser, but interferes with the proper functioning HTML selectors and Cypress tests don't always behave like they should.
Add the start of a postprocessing step where we are going to validate the HTML that is generated in Flask templates and crash loudly if it is illegal.
There are many
id="..."attributes in our HTML that seem like they're not being used at all by TypeScript code or by HTMX annotations, so I write a little script to identify ones that are definitely unused and removed them. This probably leaves a number of unusedidattributes that I couldn't definitely determine as unused, and I don't want to spend time figuring it out for each of them because there are loads.How to test
This currently breaks the tests because we have illegal templates, but I need to go through this at a later time.