fix: revert change that might have broken Update permit info job

Author: Danziger

README.md

@@ -54,7 +54,7 @@ Instructions for setting up and running the various scripts locally
 
 ### Prerequisites
 
-Currently runs on Node.js v18 (as this scripts use `fetch`, which was introduced in Node.js 18)
+Currently runs on Node.js LTS/Gallium v16.20.2
 
 ```bash
 # Install dependencies
@@ -135,4 +135,4 @@ To support a new network (e.g. Ink, chain ID 57073), run these steps in order:
 
    Without the second argument, the script would use `CowSwap.json` and skip all tokens (they would have the wrong chainId), leaving the permit file empty.
 
-3. **Include only the new network's files in your PR.** The scripts above may have updated files for other networks too; do not include those changes, as they are updated daily by a cron job.
+3. **Include only the new network's files in your PR.** The scripts above may have updated files for other networks too; do not include those changes, as they are updated daily by a cron job.

src/permitInfo/utils/getTokensFromTokenList.ts

@@ -16,7 +16,7 @@ export async function getTokensFromTokenList(
   if (tokenListPath?.startsWith('http')) {
     return (await fetch(tokenListPath).then((r) => r.json())).tokens
   } else {
-    const filePath = tokenListPath ? join(BASE_PATH, tokenListPath) : join(BASE_PATH, tokenListsByNetwork[chainId])
+    const filePath = tokenListPath ? tokenListPath : join(BASE_PATH, tokenListsByNetwork[chainId])
 
     return JSON.parse(readFileSync(filePath, 'utf-8')).tokens
   }