eslint-plugin-de-morgan/dist/utils/has-negation-operator.d.ts

ESLint plugin for transforming negated boolean expressions via De Morgan’s laws

import { UnaryExpression, Node } from 'estree'
/**
 * Checks whether the given expression is a UnaryExpression with operator '!'.
 *
 * @param node - The AST node to check.
 * @returns True if the node is a UnaryExpression with operator '!'.
 */
export declare function hasNegationOperator(node: Node): node is UnaryExpression