Remove fetch polyfills

Author: andrewbranch

package-lock.json

@@ -22,8 +22,5 @@
     "esbuild": "^0.18.12",
     "prettier": "^3.0.3",
     "typescript": "^5.2.2"
-  },
-  "volta": {
-    "node": "19.8.1"
   }
 }

package.json

@@ -41,9 +41,8 @@
     "@types/marked": "^5.0.0",
     "@types/marked-terminal": "^3.1.3",
     "@types/node": "^20.2.5",
-    "@types/node-fetch": "^2.6.4",
     "@types/semver": "^7.5.3",
-    "typescript": "^5.0.0-dev.20230207"
+    "typescript": "^5.2.2"
   },
   "dependencies": {
     "@arethetypeswrong/core": "0.12.2",
@@ -52,7 +51,9 @@
     "commander": "^10.0.1",
     "marked": "^5.1.0",
     "marked-terminal": "^5.2.0",
-    "node-fetch": "^2.6.4",
     "semver": "^7.5.4"
+  },
+  "engines": {
+    "node": ">=18"
   }
 }

packages/cli/package.json

@@ -8,7 +8,6 @@ import { execSync } from "child_process";
 import { Option, program } from "commander";
 import { readFile, stat, unlink } from "fs/promises";
 import { createRequire } from "module";
-import { FetchError } from "node-fetch";
 import path from "path";
 import readline from "readline";
 import { problemFlags } from "./problemUtils.js";
@@ -134,8 +133,8 @@ particularly ESM-related module resolution issues.`
           });
         }
       } catch (error) {
-        if (error instanceof FetchError) {
-          program.error(`error while fetching package:\n${error.message}`, { code: error.code });
+        if (error instanceof Error && "code" in error) {
+          program.error(`error while fetching package:\n${error.message}`, { code: "" + error.code });
         }
 
         handleError(error, "checking package");

packages/cli/src/index.ts

@@ -48,19 +48,18 @@
   },
   "dependencies": {
     "@andrewbranch/untar.js": "^1.0.3",
-    "fetch-ponyfill": "^7.1.0",
     "fflate": "^0.7.4",
     "semver": "^7.5.4",
     "typescript": "^5.2.2",
     "validate-npm-package-name": "^5.0.0"
   },
   "devDependencies": {
-    "@types/node": "^18.15.11",
+    "@types/node": "^20.8.6",
     "@types/semver": "^7.5.0",
     "@types/ts-expose-internals": "npm:[email protected]",
     "@types/validate-npm-package-name": "^4.0.0"
   },
-  "volta": {
-    "node": "19.8.1"
+  "engines": {
+    "node": ">=18"
   }
 }