5.x docs are missing some documentation added in late 4.x versions #1881

@paulhiggs in expressjs/express#6479 reported that express.text() is missing from 5.x docs.

express.text() and express.raw() were added in Express 4.17.0. The 4.x documentation reflects that (18dfac1, 958e581, b49ab1b), but 5.x documentation has not been updated after changes from 4.17.0/4.17.1 were merged into 5.0/5.x branches (expressjs/express@121fe99).

TODO:

• Add express.text() to 5.x API docs (Reflect body-parser changes in 5.x API docs and include those that where missing #1883)
• Add express.raw() to 5.x API docs (Reflect body-parser changes in 5.x API docs and include those that where missing #1883)
• Review 4.x documentation changes and check if more changes to late 4.x versions that were later included in 5.x are missing in 5.x docs (it has already been tracked in Review and Update v5.x Documentation against v4.x #1479)
  • 4.18 added priority option to res.cookie() and root option to res.download() (5c98ee4) (Update 5x API docs with missing 4x changes #1886)
  • Added documentation for calling acceptsLanguages without argument #1402 improved req.acceptsLanguages() docs, but only the 4.x version (Update 5x API docs with missing 4x changes #1886)
  • 5e918ea added warning boxes to res.render() and app.render() (Update 5x API docs with missing 4x changes #1886)
  • fcaca7f added warnings about locals (Update 5x API docs with missing 4x changes #1886)
  • Added docs for res.cookie partitioned option #1456 documented the partitioned option of res.cookie() (Update 5x API docs with missing 4x changes #1886)
  • 4.x and 5.x had slightly different (and incompatible) examples for router.param(fn), which doesn't even exist in Express 5 (Remove router.param(fn) from 5.x docs #1884)
  • a5ca5b0 changed req.body documentation (4.x), removing references to multer and body-parser and presenting built-in middleware. (Update 5x API docs with missing 4x changes #1886)
  • Update res.cookie for setting multiple cookies in a single response #1063 expanded res.cookie() docs, showing how to set multiple cookies (Update 5x API docs with missing 4x changes #1886)

Other differences include:

• Admonitions are used inconsistently (e.g. in 4.x express.static(), but not in 5.x; there are still many .doc-box <div>s)
• One warning about open redirect was removed in 5.x res.location() in docs: add deprecation note for 'back' redirect in res-redirect.md and res-location.md v4 #1835
• In 4.x most strings in comments use single quotes, but in 5.x many more use double quotes (and one in res.type() has a typo - after redesign the typo is here)
  • 5.x docs sometimes place comments showing expected value (// => sth) in the same line as code, while 4.x consistently uses new line
• In some 5x docs available in Express 4.?? onwards or similar notes have been removed (or never added), but in most places those still exist
• req.host and req.hostname sections are sorted differently
• Page description uses request/response in 5.x and req/res in 4.x