How to refer to section in a Quarto typst document by name instead of number?

The following code in an *.qmd leads to referencing by number:

---
format: typst
section-numbering: "1"
---

# First chp

A link to @sec-chp2

# Second chp {#sec-chp2}

Result:

How can I change the code so that I get a reference saying "A link to chapter 2 Second chp" instead of "A link to Section 2"?

You can define your own show rule for ref:

---
format:   
  typst:     
    include-before-body:        
      - text: |      
          #set heading(numbering: "1.1", supplement: [chapter])

          #show ref: it => if it.element.func() != heading { it } else {
            let h = it.element // heading
            let c = context {
              let n = numbering("1.1", ..counter(heading).at(h.location())) // numbering
              return h.supplement + " " + n + " " + h.body
            }
            link(it.target, c)
          }
---

# First chp {#sec-chp1}

A link to @sec-chp2

# Second chp {#sec-chp2}

A link to @sec-chp2-sub1

## First subchp of second chp {#sec-chp2-sub1}

A link @sec-chp1