[RRFC] Support v-if v-else-if v-else

[mantou132]

• I searched for an existing RRFC which might be relevant to my RRFC

Motivation

Simplify conditional templates

Example

html`
      <div v-if=${isEmpty} class="placeholder">${this.placeholder}</div>
      <div v-else-if=${!this.multiple} class="value">${currentLabels}</div>
      <dy-scroll-box v-else class="values">
        ${typeof currentLabels?.at(0) === 'object' ? currentLabels : currentLabels?.join(', ')}
      </dy-scroll-box>
    `

How

Implemented in the _clone method of TemplateInstance

Current Behavior

Desired Behavior

References

• n/a

[vospascal]

would it not make more sense instead of baking this in. Having this as directive you can release this as a package of even part of a collection of directives for others to use. see https://lit.dev/docs/templates/directives/ i saw in your project you where changing internals for this which would make updating the dependencies harder down the road. Using directives would probably give you a more straight update path