yarn format - prettier improvements & add .editorconfig (rrweb-io#1471)

Some dev improvements:
* Add .editorconfig config file https://editorconfig.org/
* move the singleQuote spec into .editorconfig and add old .changesets/*.md to .prettierignore so that we don't incorrectly reformat new changeset files to single quote from the double quote which they can be autogenerated with in github
* .gitignore Ignore emacs chaff files
* Add `yarn format:head` a convenience command to run prettier against just those files in the head commit
* Some mention of `yarn format` in the docs
* Fix some test html closing tags; authoring mistakes, rather than deliberately malformed html — picked up by an explicit `yarn prettier --write '**/*.html'`

Author: eoghanmurray

.changeset/format-head-prettier.md

@@ -0,0 +1,2 @@
+---
+---

.editorconfig

@@ -0,0 +1,14 @@
+root = true
+
+# initialized from https://prettier.io/docs/en/configuration.html#editorconfig
+[*]
+charset = utf-8
+insert_final_newline = true
+end_of_line = lf
+indent_style = space
+indent_size = 2
+max_line_length = 80
+quote_type = single
+
+[.changeset/*.md]
+quote_type = double

.gitignore

@@ -18,6 +18,9 @@ dist
 
 .turbo
 
+# emacs working files end in a tilde
+*~
+
 # `.yarn/install-state.gz` is an optimization file that you shouldn't ever have to commit. 
 # It simply stores the exact state of your project so that the next commands can boot without having to resolve your workspaces all over again.
 .yarn/install-state.gz

.prettierignore

@@ -0,0 +1,107 @@
+# list of old changeset files that were mutated to use single quotes by a previous version of prettier:
+.changeset/attribute-text-reductions.md
+.changeset/avoid-costly-createlement.md
+.changeset/brave-numbers-joke.md
+.changeset/breezy-cats-heal.md
+.changeset/breezy-mice-breathe.md
+.changeset/calm-bulldogs-speak.md
+.changeset/calm-oranges-sin.md
+.changeset/chatty-cherries-train.md
+.changeset/clean-plants-play.md
+.changeset/clean-shrimps-lay.md
+.changeset/cold-eyes-hunt.md
+.changeset/cold-hounds-teach.md
+.changeset/controller-finish-flag.md
+.changeset/cool-grapes-hug.md
+.changeset/cuddly-readers-warn.md
+.changeset/curvy-apples-lay.md
+.changeset/curvy-balloons-brake.md
+.changeset/date-now-guard.md
+.changeset/dirty-rules-dress.md
+.changeset/eight-terms-hunt.md
+.changeset/empty-bikes-cheer.md
+.changeset/event-single-wrap.md
+.changeset/fair-dragons-greet.md
+.changeset/fast-chefs-smell.md
+.changeset/few-rockets-travel.md
+.changeset/few-turkeys-reflect.md
+.changeset/five-peas-lay.md
+.changeset/fluffy-planes-retire.md
+.changeset/forty-elephants-attack.md
+.changeset/fresh-cars-impress.md
+.changeset/fresh-spoons-drive.md
+.changeset/friendly-numbers-leave.md
+.changeset/gold-apples-joke.md
+.changeset/gold-terms-look.md
+.changeset/grumpy-ways-own.md
+.changeset/hip-worms-relax.md
+.changeset/hungry-dodos-taste.md
+.changeset/itchy-dryers-double.md
+.changeset/khaki-dots-bathe.md
+.changeset/large-ants-prove.md
+.changeset/lazy-squids-draw.md
+.changeset/lazy-toes-confess.md
+.changeset/lemon-lamps-switch.md
+.changeset/light-fireants-exercise.md
+.changeset/little-radios-thank.md
+.changeset/little-suits-leave.md
+.changeset/loud-seals-raise.md
+.changeset/lovely-pears-cross.md
+.changeset/lovely-students-boil.md
+.changeset/mean-tips-impress.md
+.changeset/mighty-ads-worry.md
+.changeset/mighty-bulldogs-begin.md
+.changeset/mighty-frogs-sparkle.md
+.changeset/modern-doors-watch.md
+.changeset/moody-dots-refuse.md
+.changeset/nervous-buses-pump.md
+.changeset/nervous-kiwis-nail.md
+.changeset/nervous-mirrors-perform.md
+.changeset/nervous-poets-grin.md
+.changeset/nervous-tables-travel.md
+.changeset/new-snakes-call.md
+.changeset/nice-pugs-reply.md
+.changeset/old-dryers-hide.md
+.changeset/polite-olives-wave.md
+.changeset/pretty-plums-rescue.md
+.changeset/pretty-schools-remember.md
+.changeset/proud-experts-jam.md
+.changeset/rare-adults-sneeze.md
+.changeset/README.md
+.changeset/real-masks-explode.md
+.changeset/real-trains-switch.md
+.changeset/rich-crews-protect.md
+.changeset/rich-dots-lay.md
+.changeset/rich-jars-remember.md
+.changeset/rotten-spies-enjoy.md
+.changeset/serious-ants-juggle.md
+.changeset/silver-pots-sit.md
+.changeset/silver-windows-float.md
+.changeset/sixty-impalas-laugh.md
+.changeset/small-olives-arrive.md
+.changeset/smart-ears-refuse.md
+.changeset/smart-geckos-cover.md
+.changeset/smooth-papayas-boil.md
+.changeset/smooth-poems-bake.md
+.changeset/spotty-bees-destroy.md
+.changeset/stupid-ghosts-help.md
+.changeset/swift-dancers-rest.md
+.changeset/swift-peas-film.md
+.changeset/thin-vans-applaud.md
+.changeset/thirty-baboons-punch.md
+.changeset/three-baboons-bow.md
+.changeset/tidy-swans-repair.md
+.changeset/tidy-yaks-joke.md
+.changeset/tiny-buckets-love.md
+.changeset/tiny-candles-whisper.md
+.changeset/tiny-chairs-build.md
+.changeset/tricky-panthers-guess.md
+.changeset/twenty-goats-kneel.md
+.changeset/twenty-lies-switch.md
+.changeset/twenty-planets-repeat.md
+.changeset/violet-melons-itch.md
+.changeset/violet-zebras-cry.md
+.changeset/wise-spiders-jog.md
+.changeset/witty-kids-talk.md
+.changeset/yellow-mails-cheat.md
+.changeset/young-timers-grow.md

.prettierrc

@@ -1,4 +1,3 @@
 {
-  "singleQuote": true,
   "trailingComma": "all"
 }

CONTRIBUTING.md

@@ -31,6 +31,7 @@ clear and has sufficient instructions to be able to reproduce the issue.
 - Run a cobrowsing/mirroring session locally: `yarn live-stream`
 - Test: `yarn test` or `yarn test:watch`
 - Lint: `yarn lint`
+- Rewrite files with prettier: `yarn format` or `yarn format:head`
 
 ## Coding style
 

docs/development/coding-style.md

@@ -1,6 +1,6 @@
 # Coding Style
 
-These are the style guidelines for coding in Electron.
+These have been adapted from the style guidelines for coding in Electron.
 
 You can run `yarn lint` to show any style issues detected by `eslint`.
 
@@ -9,6 +9,8 @@ You can run `yarn lint` to show any style issues detected by `eslint`.
 - End files with a newline.
 - Using a plain `return` when returning explicitly at the end of a function.
   - Not `return null`, `return undefined`, `null` or `undefined`
+- run `yarn format` to rewrite all files in the standard format
+- run `yarn format:head` to rewrite files from your last commit
 
 ## Documentation
 

package.json

@@ -41,6 +41,7 @@
     "test:watch": "yarn turbo run test:watch",
     "test:update": "yarn turbo run test:update",
     "format": "yarn prettier --write '**/*.{ts,md}'",
+    "format:head": "git diff --name-only HEAD^ |grep '\\.ts$\\|\\.md$' |xargs yarn prettier --write",
     "dev": "yarn turbo run dev",
     "repl": "cd packages/rrweb && npm run repl",
     "live-stream": "cd packages/rrweb && yarn live-stream",

packages/rrweb/test/__snapshots__/integration.test.ts.snap

@@ -1716,29 +1716,34 @@ exports[`record integration tests can record clicks 1`] = `
                     \\"childNodes\\": [
                       {
                         \\"type\\": 3,
-                        \\"textContent\\": \\"link\\\\n  \\\\n    \\",
+                        \\"textContent\\": \\"link\\",
                         \\"id\\": 22
-                      },
-                      {
-                        \\"type\\": 2,
-                        \\"tagName\\": \\"script\\",
-                        \\"attributes\\": {},
-                        \\"childNodes\\": [
-                          {
-                            \\"type\\": 3,
-                            \\"textContent\\": \\"SCRIPT_PLACEHOLDER\\",
-                            \\"id\\": 24
-                          }
-                        ],
-                        \\"id\\": 23
-                      },
+                      }
+                    ],
+                    \\"id\\": 21
+                  },
+                  {
+                    \\"type\\": 3,
+                    \\"textContent\\": \\"\\\\n  \\\\n    \\",
+                    \\"id\\": 23
+                  },
+                  {
+                    \\"type\\": 2,
+                    \\"tagName\\": \\"script\\",
+                    \\"attributes\\": {},
+                    \\"childNodes\\": [
                       {
                         \\"type\\": 3,
-                        \\"textContent\\": \\"\\\\n    \\\\n    \\\\n\\\\n\\",
+                        \\"textContent\\": \\"SCRIPT_PLACEHOLDER\\",
                         \\"id\\": 25
                       }
                     ],
-                    \\"id\\": 21
+                    \\"id\\": 24
+                  },
+                  {
+                    \\"type\\": 3,
+                    \\"textContent\\": \\"\\\\n    \\\\n    \\\\n\\\\n\\",
+                    \\"id\\": 26
                   }
                 ],
                 \\"id\\": 16
@@ -15688,7 +15693,7 @@ exports[`record integration tests should record shadow DOM 1`] = `
                   },
                   {
                     \\"type\\": 3,
-                    \\"textContent\\": \\"\\\\n    \\\\n  \\\\n    \\",
+                    \\"textContent\\": \\"\\\\n  \\\\n    \\",
                     \\"id\\": 39
                   },
                   {

packages/rrweb/test/html/link.html

@@ -9,6 +9,6 @@
 
   <body>
     <span id="not-a-link">not link</span>
-    <a href="about:blank#clicked">link</span>
+    <a href="about:blank#clicked">link</a>
   </body>
 </html>