lint/src/utils/splitText.ts

import { LintConfig } from '../types/LintConfig'
import { LineEndings } from '../types/LineEndings'

/**
 * Splits the given content into a list of lines, regardless of CRLF or LF line endings.
 * @param {string} text - the text content to be split into lines.
 * @returns {string[]} an array of lines from the given text
 */
export const splitText = (text: string, config: LintConfig): string[] => {
  if (!text) return []

  const expectedLineEndings =
    config.lineEndings === LineEndings.LF ? '\n' : '\r\n'

  const incorrectLineEndings = expectedLineEndings === '\n' ? '\r\n' : '\n'

  text = text.replace(
    new RegExp(incorrectLineEndings, 'g'),
    expectedLineEndings
  )

  // splitting text on '\r\n' was causing some problem
  // as it was retaining carriage return at the end of each line
  // so, removed the carriage returns from text and splitted on line feed (lf)
  return text.replace(/\r/g, '').split(/\n/)
}