fix: refactor code so linter no longer produces warnings (#605)

examples/typescript-typed-document-node.ts

@@ -5,7 +5,7 @@ import { parse } from 'graphql'
 {
   const endpoint = `https://graphql-yoga.com/api/graphql`
 
-  const query: TypedDocumentNode<{ greetings: string }, never | Record<any, never>> = parse(gql`
+  const query: TypedDocumentNode<{ greetings: string }, Record<any, never>> = parse(gql`
     query greetings {
       greetings
     }
@@ -23,7 +23,7 @@ import { parse } from 'graphql'
 
   const client = new GraphQLClient(endpoint)
 
-  const query: TypedDocumentNode<{ greetings: string }, never | Record<any, never>> = parse(gql`
+  const query: TypedDocumentNode<{ greetings: string }, Record<any, never>> = parse(gql`
     query greetings {
       greetings
     }

src/resolveRequestDocument.ts

@@ -1,10 +1,11 @@
 import type { RequestDocument } from './types.js'
 /**
  * Refactored imports from `graphql` to be more specific, this helps import only the required files (100KiB)
- * instead of the entire package (>500KiB) where tree-shaking is not supported.
+ * instead of the entire package (greater than 500KiB) where tree-shaking is not supported.
  * @see https://github.com/jasonkuhrt/graphql-request/pull/543
  */
 import type { DocumentNode, OperationDefinitionNode } from 'graphql/language/ast.js'
+import { Kind } from 'graphql/language/kinds.js'
 import { parse } from 'graphql/language/parser.js'
 import { print } from 'graphql/language/printer.js'
 
@@ -16,7 +17,7 @@ const extractOperationName = (document: DocumentNode): string | undefined => {
   let operationName = undefined
 
   const operationDefinitions = document.definitions.filter(
-    (definition) => definition.kind === `OperationDefinition`,
+    (definition) => definition.kind === Kind.OPERATION_DEFINITION,
   ) as OperationDefinitionNode[]
 
   if (operationDefinitions.length === 1) {