eslint-plugin-de-morgan/dist/utils/sanitize-code.js

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

/**
 * Prepares a code snippet for display in error messages by removing comments
 * and normalizing whitespace to a single line.
 *
 * @param code - The code snippet to clean.
 * @returns The cleaned single-line code without comments.
 */
function sanitizeCode(code) {
  let stringLiterals = []
  let normalized = code
    .replaceAll(
      /(?<quote>["'`])(?:\\.|(?!\k<quote>)[^\\])*\k<quote>/gu,
      match => {
        let placeholder = `__STRING_LITERAL_${stringLiterals.length}__`
        stringLiterals.push(match)
        return placeholder
      },
    )
    .replaceAll(/\/\/.*$/gmu, '')
    .replaceAll(/\/\*[\s\S]*?\*\//gu, '')
    .replaceAll(/\s+/gu, ' ')
    .replaceAll(/\(\s+/gu, '(')
    .replaceAll(/\s+\)/gu, ')')
    .trim()
  for (let [index, string_] of stringLiterals.entries()) {
    normalized = normalized.replace(`__STRING_LITERAL_${index}__`, string_)
  }
  return normalized
}
export { sanitizeCode }