shim more buffer methods, and fs methods

getting importer plugin to work,

package-lock.json

@@ -1,17 +1,18 @@
 {
   "name": "ignis",
-  "version": "0.4.0",
+  "version": "0.5.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "ignis",
-      "version": "0.4.0",
+      "version": "0.5.0",
       "dependencies": {
         "chokidar": "^3.6.0",
         "compression": "^1.7.4",
         "cors": "^2.8.5",
         "express": "^4.21.0",
+        "pako": "^2.1.0",
         "ws": "^8.16.0"
       },
       "devDependencies": {
@@ -1406,6 +1407,12 @@
         "node": ">= 0.8"
       }
     },
+    "node_modules/pako": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/pako/-/pako-2.1.0.tgz",
+      "integrity": "sha512-w+eufiZ1WuJYgPXbV/PO3NCMEc3xqylkKHzp8bxp1uW4qaSNQUkwmLLEc3kKsfz8lpV1F8Ht3U1Cm+9Srog2ug==",
+      "license": "(MIT AND Zlib)"
+    },
     "node_modules/parseurl": {
       "version": "1.3.3",
       "resolved": "https://registry.npmjs.org/parseurl/-/parseurl-1.3.3.tgz",