var obj = {
  // an entry with a very long string
  x: "12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890",
  url: "http://example.com/12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890",
  longName:
    "12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890",
  [i]: "12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890",
  [prop]:
    "12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890",
  x: "12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890",
  a: "12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890",
  ab: "12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890",
  abc: "12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890",
  abcd: "12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890",
  abcde:
    "12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890",
  abcdef:
    "12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890",
  古: "https://prettier.io/docs/en/rationale.html#what-prettier-is-concerned-about",
  古今: "https://prettier.io/docs/en/rationale.html#what-prettier-is-concerned-about",
  古体诗:
    "https://prettier.io/docs/en/rationale.html#what-prettier-is-concerned-about",
};