diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 000000000..58d264c1c
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,12 @@
+# https://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = false
+insert_final_newline = true
diff --git a/package.json b/package.json
index c8abb4606..efb955b81 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,12 @@
     "lerna": "^4.0.0",
     "prettier": "^2.2.1",
     "typescript": "^4.2.4",
-    "uvu": "^0.5.1"
+    "uvu": "^0.5.1",
+    "eslint": "^7.22.0",
+    "eslint-config-prettier": "^8.1.0",
+    "eslint-plugin-prettier": "^3.3.1",
+    "@typescript-eslint/eslint-plugin": "^4.18.0",
+    "@typescript-eslint/parser": "^4.18.0"
   },
   "dependencies": {
     "@changesets/cli": "^2.16.0"
diff --git a/packages/astro/package.json b/packages/astro/package.json
index 513e50dc5..823fa60b1 100644
--- a/packages/astro/package.json
+++ b/packages/astro/package.json
@@ -91,18 +91,10 @@
     "@types/react-dom": "^17.0.2",
     "@types/sass": "^1.16.0",
     "@types/yargs-parser": "^20.2.0",
-    "@typescript-eslint/eslint-plugin": "^4.18.0",
-    "@typescript-eslint/parser": "^4.18.0",
-    "concurrently": "^6.0.0",
     "del": "^6.0.0",
     "domhandler": "^4.1.0",
-    "eslint": "^7.22.0",
-    "eslint-config-prettier": "^8.1.0",
-    "eslint-plugin-prettier": "^3.3.1",
     "execa": "^5.0.0",
-    "prettier": "^2.2.1",
-    "typescript": "^4.2.3",
-    "uvu": "^0.5.1"
+    "typescript": "^4.2.3"
   },
   "engines": {
     "node": ">=14.0.0",
diff --git a/yarn.lock b/yarn.lock
index fe786f230..da0166957 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3206,21 +3206,6 @@ concat-stream@^2.0.0:
     readable-stream "^3.0.2"
     typedarray "^0.0.6"
 
-concurrently@^6.0.0:
-  version "6.0.2"
-  resolved "https://registry.npmjs.org/concurrently/-/concurrently-6.0.2.tgz"
-  integrity sha512-u+1Q0dJG5BidgUTpz9CU16yoHTt/oApFDQ3mbvHwSDgMjU7aGqy0q8ZQyaZyaNxdwRKTD872Ux3Twc6//sWA+Q==
-  dependencies:
-    chalk "^4.1.0"
-    date-fns "^2.16.1"
-    lodash "^4.17.21"
-    read-pkg "^5.2.0"
-    rxjs "^6.6.3"
-    spawn-command "^0.0.2-1"
-    supports-color "^8.1.0"
-    tree-kill "^1.2.2"
-    yargs "^16.2.0"
-
 condense-newlines@^0.2.1:
   version "0.2.1"
   resolved "https://registry.npmjs.org/condense-newlines/-/condense-newlines-0.2.1.tgz"
@@ -3544,7 +3529,7 @@ dashdash@^1.12.0:
   dependencies:
     assert-plus "^1.0.0"
 
-date-fns@^2.16.1, date-fns@^2.19.0:
+date-fns@^2.19.0:
   version "2.21.1"
   resolved "https://registry.npmjs.org/date-fns/-/date-fns-2.21.1.tgz"
   integrity sha512-m1WR0xGiC6j6jNFAyW4Nvh4WxAi4JF4w9jRJwSI8nBmNcyZXPcP9VUQG+6gHQXAmqaGEKDKhOqAtENDC941UkA==
@@ -9756,7 +9741,7 @@ rxjs@^5.5.6:
   dependencies:
     symbol-observable "1.0.1"
 
-rxjs@^6.6.0, rxjs@^6.6.3:
+rxjs@^6.6.0:
   version "6.6.7"
   resolved "https://registry.npmjs.org/rxjs/-/rxjs-6.6.7.tgz"
   integrity sha512-hTdwr+7yYNIT5n4AMYp85KA6yw2Va0FLa3Rguvbpa4W3I5xynaBZo41cM3XM+4Q6fRMj3sBYIR1VAmZMXYJvRQ==
@@ -10261,11 +10246,6 @@ space-separated-tokens@^1.0.0:
   resolved "https://registry.npmjs.org/space-separated-tokens/-/space-separated-tokens-1.1.5.tgz"
   integrity sha512-q/JSVd1Lptzhf5bkYm4ob4iWPjx0KiRe3sRFBNrVqbJkFaBm5vbbowy1mymoPNLRa52+oadOhJ+K49wsSeSjTA==
 
-spawn-command@^0.0.2-1:
-  version "0.0.2-1"
-  resolved "https://registry.npmjs.org/spawn-command/-/spawn-command-0.0.2-1.tgz"
-  integrity sha1-YvXpRmmBwbeW3Fkpk34RycaSG9A=
-
 spawndamnit@^2.0.0:
   version "2.0.0"
   resolved "https://registry.npmjs.org/spawndamnit/-/spawndamnit-2.0.0.tgz"
@@ -10804,13 +10784,6 @@ supports-color@^7.0.0, supports-color@^7.1.0:
   dependencies:
     has-flag "^4.0.0"
 
-supports-color@^8.1.0:
-  version "8.1.1"
-  resolved "https://registry.npmjs.org/supports-color/-/supports-color-8.1.1.tgz"
-  integrity sha512-MpUEN2OodtUzxvKQl72cUF7RQ5EiHsGvSsVG0ia9c5RbWGL2CI4C7EpPS8UTBIplnlzZiNuV56w+FuNxy3ty2Q==
-  dependencies:
-    has-flag "^4.0.0"
-
 svelte-hmr@^0.13.2:
   version "0.13.4"
   resolved "https://registry.npmjs.org/svelte-hmr/-/svelte-hmr-0.13.4.tgz"
@@ -11143,7 +11116,6 @@ tree-kill@^1.2.2:
   version "1.2.2"
   resolved "https://registry.npmjs.org/tree-kill/-/tree-kill-1.2.2.tgz"
   integrity sha512-L0Orpi8qGpRG//Nd+H90vFB+3iHnue1zSSGmNOOCh1GLJ7rUKVwV2HvijphGQS2UmhUZewS9VgvxYIdgr+fG1A==
-
 trim-newlines@^1.0.0:
   version "1.0.0"
   resolved "https://registry.npmjs.org/trim-newlines/-/trim-newlines-1.0.0.tgz"