eslint-plugin-de-morgan/dist/rules/no-negated-conjunction.js

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

import { repository } from '../package.json.js'
import { createTestWithParameters } from '../utils/create-test-with-parameters.js'
import { hasNegationInsideParens } from '../utils/has-negation-inside-parens.js'
import { isInTruthinessContext } from '../utils/is-in-truthiness-context.js'
import { getStatementSafeFix } from '../utils/get-statement-safe-fix.js'
import { needsParentParens } from '../utils/needs-parent-parens.js'
import { hasBooleanContext } from '../utils/has-boolean-context.js'
import { applyToProperty } from '../utils/apply-to-property.js'
import { isConjunction } from '../utils/is-conjunction.js'
import { sanitizeCode } from '../utils/sanitize-code.js'
import { isPureGroup } from '../utils/is-pure-group.js'
import { isNegated } from '../utils/is-negated.js'
import { transform } from '../utils/transform.js'
import { not } from '../utils/not.js'
import { or } from '../utils/or.js'
var no_negated_conjunction_default = {
  create: context => ({
    UnaryExpression: node => {
      if (
        createTestWithParameters(node, context)(
          isNegated,
          applyToProperty('argument', isConjunction),
          isPureGroup,
          or(hasBooleanContext, not(hasNegationInsideParens)),
        )
      ) {
        let fixedExpression = transform({
          expressionType: 'conjunction',
          shouldWrapInParens: needsParentParens(node, '||'),
          canStripNegation: isInTruthinessContext(node),
          context,
          node,
        })
        if (fixedExpression) {
          let safeFix = getStatementSafeFix({
            fix: fixedExpression,
            context,
            node,
          })
          let originalExpression = context.sourceCode.getText(node)
          context.report({
            data: {
              fixed: sanitizeCode(safeFix ?? fixedExpression),
              original: sanitizeCode(originalExpression),
            },
            fix: fixer =>
              safeFix === null ? null : fixer.replaceText(node, safeFix),
            messageId: 'convertNegatedConjunction',
            node,
          })
        }
      }
    },
  }),
  meta: {
    docs: {
      description:
        'Transforms the negation of a conjunction !(A && B) into the equivalent !A || !B according to De Morgan’s law',
      url: `https://github.com/${repository}/blob/main/docs/no-negated-conjunction.md`,
      recommended: true,
    },
    messages: {
      convertNegatedConjunction:
        'Replace negated conjunction `{{ original }}` with `{{ fixed }}`',
    },
    type: 'suggestion',
    fixable: 'code',
    schema: [],
  },
}
export { no_negated_conjunction_default as default }