Rule Proposal: use-v-on-exact

[mysticatea]

From #269.

Please describe what the rule should do:

<button @click="select" @click.ctrl="toggle">test</button>

In that case, I think that people expected click triggers the select and ctrl+click triggers the toggle. But actually, the select is triggered by the both cases.

This rule reports v-on directives if multiple v-on directives exist and those have different system modifiers.

Consider to use '.exact' modifier.

What category of rule is this? (place an "X" next to just one item)

[ ] Enforces code style
[X] Warns about a potential error
[X] Suggests an alternate way of doing something
[ ] Other (please specify:)

Provide 2-3 code examples that this rule will warn about:

<!-- ✓ GOOD -->
<button @click="foo"/>
<button @click.ctrl="foo"/>

<!-- ✘ BAD -->
<button @click="foo" @click.ctrl="foo"/>

[michalsnik]

I like this proposition. Looks like a good heads up rule :)

[chrisvfritz]

I like this rule too! I'm thinking it could even go in essentials and is a candidate for the style guide. @michalsnik Anything you could use from me to make development on this easier?

[michalsnik]

I think all is clear here and ready to be implemented!

[armano2]

i can make it but i have question: should this work only for build in events or for all?