Wrong location information in TemplateLiteralElement #60320

Which @angular/* package(s) are the source of the bug?

compiler

Is this a regression?

Yes

Description

Location information for TemplateLiteralElement are wrong.

Please provide a link to a minimal reproduction of the bug

No response

Please provide the exception or error you saw

import { Lexer, Parser } from '@angular/compiler';

const parse = (text) => {
  const lexer = new Lexer();
  const parser = new Parser(lexer);

  return parser.parseBinding(text, '', 0);
};

console.log(parse('`a${b}c`').ast.elements);




[
  TemplateLiteralElement {
    span: ParseSpan { start: 0, end: 0 },
    sourceSpan: AbsoluteSourceSpan { start: 0, end: 0 },
    text: 'a'
  },
  TemplateLiteralElement {
    span: ParseSpan { start: 6, end: 6 },
    sourceSpan: AbsoluteSourceSpan { start: 6, end: 6 },
    text: 'c'
  }
]

Please provide the environment you discovered this bug in (run ng version)

@angular/compiler 19.2.1

Anything else?

I'm adding support to Prettier prettier/prettier#17238 .

In angular-estree-parser which used in Prettier, I'm locating the TemplateLiteralElement by the sibling expressions.

https://github.com/prettier/angular-estree-parser/blob/72bfe63e0f237527726819a0401b9be5c26071f8/src/transform-node.ts#L558-L575

Correct location information can help us get ride of this hack.

Related issue #60319