formatter: Blank line between method chain should be removed

[leaysgur]

Background: Feedback on our company's Discord

const posts = readdirSync(join(root, './posts'))
  .filter((file) => file.endsWith('.mdx'))
  .map((file) => {
    const { content, data } = matter(
      readFileSync(join('./posts', file), 'utf8'),
    );
    const {
      minutes,
      words: { total: words },
    } = readingTime(content);

    return {
      ...data,
      lastUpdateDate: getLastUpdateDate(`posts/${file}`),
      minutes,
      slug: basename(file, '.mdx'),
      words,
    } as Post;
  })


  .sort(({ date: dateA }, { date: dateB }) =>
    compareDesc(parseISO(dateA), parseISO(dateB)),
  );

Note the multiple blank lines immediately preceding .sort().

And current formatted result (the same as Prettier):

const posts = readdirSync(join(root, "./posts"))
  .filter((file) => file.endsWith(".mdx"))
  .map((file) => {
    const { content, data } = matter(
      readFileSync(join("./posts", file), "utf8"),
    );
    const {
      minutes,
      words: { total: words },
    } = readingTime(content);

    return {
      ...data,
      lastUpdateDate: getLastUpdateDate(`posts/${file}`),
      minutes,
      slug: basename(file, ".mdx"),
      words,
    } as Post;
  })

  .sort(({ date: dateA }, { date: dateB }) =>
    compareDesc(parseISO(dateA), parseISO(dateB)),
  );

Generally, multiple blank lines are formatted into a single blank line, but in this case, even that seems unnecessary.

[Dunqing]

It would be better to file an issue in Prettier first, since I noticed that there are two tests related to this change, so I am assuming this is intended.

[leaysgur]

NOTE: https://github.com/prettier/prettier/blob/main/tests/format/js/preserve-line/member-chain.js is the one.