refactor: switch to tab indentation rather than spaces

Fixes cloudflare#1298

.editorconfig

@@ -0,0 +1,7 @@
+# https://editorconfig.org
+root = true
+
+[*]
+end_of_line = lf
+indent_style = tab
+tab_width = 2

.prettierrc

@@ -1,5 +1,6 @@
 {
   "printWidth": 80,
   "singleQuote": false,
-  "semi": true
+  "semi": true,
+  "useTabs": true
 }

.vscode/settings.json

@@ -1,43 +1,44 @@
 {
-  "editor.defaultFormatter": "esbenp.prettier-vscode",
-  "cSpell.words": [
-    "cfetch",
-    "clipboardy",
-    "cloudflared",
-    "Codespaces",
-    "esbuild",
-    "eslintcache",
-    "execa",
-    "iarna",
-    "keyvalue",
-    "middlewares",
-    "Miniflare",
-    "mrbbot",
-    "outdir",
-    "outfile",
-    "pgrep",
-    "PKCE",
-    "Positionals",
-    "scandir",
-    "selfsigned",
-    "textfile",
-    "tsbuildinfo",
-    "undici",
-    "Untriaged",
-    "wasmvalue",
-    "weakmap",
-    "weakset",
-    "webassemblymemory",
-    "websockets",
-    "xxhash"
-  ],
-  "cSpell.ignoreWords": [
-    "TESTTEXTBLOBNAME",
-    "TESTWASMNAME",
-    "extensionless",
-    "yxxx"
-  ],
-  "eslint.runtime": "node",
-  "files.trimTrailingWhitespace": true,
-  "typescript.tsdk": "node_modules/typescript/lib"
+	"editor.defaultFormatter": "esbenp.prettier-vscode",
+	"cSpell.words": [
+		"cfetch",
+		"clipboardy",
+		"cloudflared",
+		"Codespaces",
+		"esbuild",
+		"eslintcache",
+		"execa",
+		"iarna",
+		"keyvalue",
+		"middlewares",
+		"Miniflare",
+		"mrbbot",
+		"outdir",
+		"outfile",
+		"pgrep",
+		"PKCE",
+		"Positionals",
+		"scandir",
+		"selfsigned",
+		"textfile",
+		"tsbuildinfo",
+		"undici",
+		"Untriaged",
+		"wasmvalue",
+		"weakmap",
+		"weakset",
+		"webassemblymemory",
+		"websockets",
+		"xxhash"
+	],
+	"cSpell.ignoreWords": [
+		"TESTTEXTBLOBNAME",
+		"TESTWASMNAME",
+		"extensionless",
+		"yxxx"
+	],
+	"eslint.runtime": "node",
+	"files.trimTrailingWhitespace": true,
+	"typescript.tsdk": "node_modules/typescript/lib",
+	"editor.tabSize": 2
 }

package.json

@@ -127,6 +127,10 @@
               "args": "after-used",
               "argsIgnorePattern": "^_"
             }
+					],
+					"no-mixed-spaces-and-tabs": [
+						"error",
+						"smart-tabs"
           ]
         }
       }