[JS] Finding tasks which link to notes which have a certain tag

[DeutscheGabanna]

With the above setup of tasks, I would like to do the following:

Step 1

Collect all pages that contain these dev updates:

let tasks = dv.pages("#daily").file.tasks.where(t => !t.completed && t.status == '>' && findChanges(t))

Step 2

With the custom function findChanges(t) let's make sure that all those > dev updates actually link to a feature note.

// I expect here that my argument is at least a simple array of tasks within a querried note.
const findChanges = (tasks)=>{
	// I will store all note mentions within double brackets [[ ]] in a separate array
	let references = []
	for (let task of tasks) {
		// draft version - I haven't tested this nor do I know if it's even proper syntax
		references = task.match(/\[\[.+?\]\]/g)
		for (let reference of references) {
				// I could access each [[reference]] with something like dv.page() and check if file.tags includes #feature/change
				if (...) return true;
		}
		// if at the end of the array none of the notes are #feature/change then tell dv that the task is not a dev update
		if (...) return false
	}
	
	return true
}

Step 3

Group tasks by the feature note they reference.

Sorry for not providing either:

• too little code to justify that I'm desparate and in need of help 😄
• too much low-quality code that you cringe by reviewing it 👨‍💻

P.S Pinging @AB1908 in reference to this discussion on discord: https://discord.com/channels/686053708261228577/875721010144477204/983777511781568582

[AB1908]

How do you know the link in the task means #feature/change. Is this tag inside that note somewhere or is that the meaning you've assigned to the link? Why not use the tag directly?

[AB1908]

A simple way of doing this in a table would be:

```dataview
table
List.text as Text,
List.link as Link
from ""
flatten file.tasks as List
where contains(List.outlinks, [[your file]])
```

[DeutscheGabanna]

#feature/change is inside the YAML of every note that is considered to be a change in a particular product feature. Therefore, each task that links to a note with that tag inside should be considered part of this projects' "timeline" of updates.
I'm using dataviewjs because the normal limitations of DQL restrict me to much.

[DeutscheGabanna]

This is my current output for example, which shows the methodology behind this:

[AB1908]

You can do something like where contains([[link]].file.etags, "#feature"), I think. Let me know if you can't figure out the equivalent JS.