Nested pre tag working exception in vue-template-compiler

[daysv]

Version

2.7.14

Reproduction link

codepen.io/daysv/pen/JjaGLVP

Steps to reproduce

In pure html:
https://codepen.io/daysv/pen/yLxeKqj

Demo:

const compiler = require('vue-template-compiler')

const str = `<div v-pre>
1

2

<div style="padding-left: 20px">aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
c
</div>
3
</div>`

const result = compiler.compile(str, { whitespace: 'condense' })
console.log(result.staticRenderFns)

What is expected?

with(this){return _c('pre',[_v("1\\n\\n2\\n\\n"),_c('pre',{staticStyle:{"padding-left":"20px"}},[_v("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaa\\nbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\\nc\\n")]),_v("\\n3\\n")])}

What is actually happening?

with(this){return _c('pre',[_v("1\\n\\n2\\n\\n"),_c('pre',{staticStyle:{"padding-left":"20px"}},[_v("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaa\\nbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\\nc\\n")]),_v(" 3 ")])}

---

bug here

let inPre = true;

// ....

if (platformIsPreTag(element.tag)) {
  inPre = false;
}

// ...

if (platformIsPreTag(element.tag)) {
  inPre = true; 
}

I think number should be used instead of boolean