Real ChatGPT answer · index seedYrQjqEKaLCocompleteB2B software · developer toolscommercial

I keep running into CORS errors when configuring Webpack dev server for a React app talking to a local Express backend. What is the current best practice to fix this?

ChatGPTgpt-62 queries10/31/2026
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The searches the AI actually ran for this prompt.

SEED QUERY
I keep running into CORS errors when configuring Webpack dev server for a React app talking to a local Express backend. What is the current best practice to fix this?
2 real searches · 1 real-search pass
webpack dev server current documentation devServer.proxy configuration webpack-dev-server v5Google ↗
OBSERVEDInstruction
Express CORS middleware official documentation origin credentialsGoogle ↗
OBSERVEDOther / navigational

Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.

Query classes

Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.

ChatGPT real searches (2)
Short factOther / navigational50%ComparisonConsequenceReasonDefinitionInstruction50%Yes / no

Classes come from the query-classifier (a local Laya model). 2 of 2 calls are low-confidence (under 50%) — hover a query in the table to see its confidence.

Searches and sources

ChatGPT2 real searches · gpt-6
webpack dev server current documentation devServer.proxy configuration webpack-dev-server v5 Google ↗
Express CORS middleware official documentation origin credentials Google ↗

Queries

2 queries · click a column to sort
Query / typeSearchIntentQuery classRouting formatClusterFreq ↓Weight
webpack dev server current documentation devServer.proxy configuration webpack-dev-server v5
OBSERVED
Google ↗
AI Mode ↗
—Instruction——1x
of 1
Express CORS middleware official documentation origin credentials
OBSERVED
Google ↗
AI Mode ↗
—Other / navigational——1x
of 1