// Synthesize main function.
	funcDecl := &ast.FuncDecl{
		Name: ast.NewIdent("main"),
		Type: f.Type,
		Body: body,
	}

	decls := make([]ast.Decl, 0, 2+len(depDecls))
	decls = append(decls, importDecl)
	decls = append(decls, depDecls...)
	decls = append(decls, funcDecl)

	slices.SortFunc(decls, func(a, b ast.Decl) int {
		return cmp.Compare(a.Pos(), b.Pos())
	})