graphql-sse/node_modules/graphql-sse/lib/client.mjs:67

[baebsndeep]

Getting this error when using express to start server and using example client code.

When I change the code in graphql-sse/node_modules/graphql-sse/lib/client.mjs from
const fetchFn = (options.fetchFn || fetch); to const fetchFn = (options.fetchFn); as a workaround to I get a new error saying fetchFn is not a function.

[enisdenjo]

NodeJS does not natively provide a fetch function, you have to provide it yourself through the fetchFn client option.

Please consult the " Client usage in Node" recipe.