function hasSelfReferenceInTDZ(declarator) {
			if (!declarator.init) {
				return false;
			}
			const variables = sourceCode.getDeclaredVariables(declarator);

			return variables.some(hasReferenceInTDZ(declarator.init));
		}
Checks whether the variables which are defined by the given declarator node have their references in TDZ.
@param {ASTNode} declarator The VariableDeclarator node to check.
@returns {boolean} `true` if one of the variables which are defined by the given declarator node have their references in TDZ.