feat: add prettier to repo root

.gitignore

@@ -9,3 +9,22 @@ tests/.phpunit.result.cache
 .idea/*
 .vscode
 js/coverage-ts
+
+# Yarn
+.pnp.*
+.yarn/*
+!.yarn/patches
+!.yarn/plugins
+!.yarn/releases
+!.yarn/sdks
+!.yarn/versions
+
+js/.pnp.*
+js/.yarn/*
+!js/.yarn/patches
+!js/.yarn/plugins
+!js/.yarn/releases
+!js/.yarn/sdks
+!js/.yarn/versions
+
+node_modules

.yarnrc.yml

@@ -0,0 +1,2 @@
+yarnPath: .yarn/releases/yarn-3.1.1.cjs
+nodeLinker: node-modules

js/.gitignore

@@ -1,9 +0,0 @@
-.pnp.*
-.yarn/*
-!.yarn/patches
-!.yarn/plugins
-!.yarn/releases
-!.yarn/sdks
-!.yarn/versions
-
-node_modules

js/.yarnrc.yml

@@ -1,2 +1,2 @@
-yarnPath: .yarn/releases/yarn-3.1.0.cjs
+yarnPath: ../.yarn/releases/yarn-3.1.1.cjs
 nodeLinker: node-modules

js/package.json

@@ -47,5 +47,5 @@
     "check-typings": "tsc --noEmit --emitDeclarationOnly false",
     "check-typings-coverage": "typescript-coverage-report"
   },
-  "packageManager": "yarn@3.1.0"
+  "packageManager": "yarn@3.1.1"
 }

package.json

@@ -0,0 +1,17 @@
+{
+    "name": "flarum",
+    "prettier": "@flarum/prettier-config",
+    "repository": "git@github.com:flarum/core.git",
+    "author": "Flarum Team",
+    "license": "MIT",
+    "private": true,
+    "packageManager": "yarn@3.1.1",
+    "devDependencies": {
+        "@flarum/prettier-config": "^1.0.0",
+        "prettier": "^2.5.1"
+    },
+    "scripts": {
+        "format": "prettier --write less",
+        "format-check": "prettier --check less"
+    }
+}

yarn.lock

@@ -0,0 +1,31 @@
+# This file is generated by running "yarn install" inside your project.
+# Manual changes might be lost - proceed with caution!
+
+__metadata:
+  version: 5
+  cacheKey: 8
+
+"@flarum/prettier-config@npm:^1.0.0":
+  version: 1.0.0
+  resolution: "@flarum/prettier-config@npm:1.0.0"
+  checksum: 2035b97dcd02f2ebcb9f0f88111adbf176fbb31132c4e0a2a5387cec14619ef0f8ac3418c14a0730de1d14765b2bc7c53aa3eea6b28949da93ceb3c1c229195a
+  languageName: node
+  linkType: hard
+
+"flarum@workspace:.":
+  version: 0.0.0-use.local
+  resolution: "flarum@workspace:."
+  dependencies:
+    "@flarum/prettier-config": ^1.0.0
+    prettier: ^2.5.1
+  languageName: unknown
+  linkType: soft
+
+"prettier@npm:^2.5.1":
+  version: 2.5.1
+  resolution: "prettier@npm:2.5.1"
+  bin:
+    prettier: bin-prettier.js
+  checksum: 21b9408476ea1c544b0e45d51ceb94a84789ff92095abb710942d780c862d0daebdb29972d47f6b4d0f7ebbfb0ffbf56cc2cfa3e3e9d1cca54864af185b15b66
+  languageName: node
+  linkType: hard