fix(compiler-vapor): empty interpolation

[LittleSound]

reference: #290

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[github-actions]

Size Report

Bundles

File	Size	Gzip	Brotli
compiler-dom.global.prod.js	84.1 kB	29.8 kB	26.3 kB
runtime-dom.global.prod.js	104 kB	39.1 kB	35.2 kB
vue.global.prod.js	162 kB	59.3 kB	52.8 kB

Usages

Name	Size	Gzip	Brotli
createApp (CAPI only)	47.2 kB	18.5 kB	16.9 kB
createApp	56 kB	21.6 kB	19.7 kB
createApp + vaporInteropPlugin	68.5 kB	25.8 kB	23.6 kB
createVaporApp	21 kB	8.3 kB	7.6 kB
createSSRApp	60.3 kB	23.3 kB	21.3 kB
defineCustomElement	61 kB	23.1 kB	21.1 kB
overall	70.5 kB	26.8 kB	24.5 kB

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commit: 214fd4a

[edison1105]

This logic is duplicated with the code above (line 103). Perhaps we can extract a function that also incorporates the logic of createTextLikeExpression.

• logic reusability
• only traverse the children once

function processTextLikeChildren(children:TextLike[]){
  const exps:SimpleExpressionNode[]=[]
  for(node ... children){
    markNonTemplate(node, context)
    // skip empty node
    if(!node.content) continue

    if (node.type === NodeTypes.TEXT) {
      exps.push(...)
    } else {
      exps.push(...)
    }
  }

  return exps
}

[LittleSound]

I have refactored this