eslint-plugin-de-morgan/dist/utils/has-negation-inside-parentheses.js

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

'use strict'
Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' })
const findOutermostParenthesizedNode = require('./find-outermost-parenthesized-node.js')
const isLogicalExpression = require('./is-logical-expression.js')
const isUnaryExpression = require('./is-unary-expression.js')
const getSourceCode = require('./get-source-code.js')
let hasNegationInside = node => {
  if (isUnaryExpression.isUnaryExpression(node) && node.operator === '!') {
    return true
  }
  if (isLogicalExpression.isLogicalExpression(node)) {
    return hasNegationInside(node.left) || hasNegationInside(node.right)
  }
  return false
}
let hasNegationInsideParentheses = (node, context) => {
  let sourceCode = getSourceCode.getSourceCode(context).getText(node)
  let outermostNode =
    findOutermostParenthesizedNode.findOutermostParenthesizedNode(
      node,
      sourceCode,
    )
  if (!isUnaryExpression.isUnaryExpression(outermostNode)) {
    return false
  }
  return hasNegationInside(outermostNode.argument)
}
exports.hasNegationInsideParentheses = hasNegationInsideParentheses