[compiler-sfc]: Bug attribute binding syntaxes result in different AST nodes

[ahnpnl]

Version

3.2.31

Reproduction link

github.com branch compiler-sfc-attr-binding

Steps to reproduce

• Clone the repo
• Install dependencies with yarn
• Open src/App.vue. In this file there is an <input> contains 2 equivalent attribute binding syntaxes ^<name> and :<name>.attr
• Run yarn test

What is expected?

Since these 2 attribute binding syntaxes are equivalent, the AST node should have similar type, which is type 7 and even better, the generated AST nodes should be the same.

What is actually happening?

After run yarn test in the reproduce repo, observe in the console that type: 6 applies to syntax ^<name> while type 7 applies to syntax :<name>.attr

---

Currently, because of this difference, it causes the issue for vue-tsc to perform type checking properly, see vuejs/language-tools#1047