fix(frontend): refactor graphql-codegen config to async function export

frontend/eslint.config.mjs

@@ -1,6 +1,6 @@
-import { dirname } from 'path'
-import { fileURLToPath } from 'url'
-import path from 'path'
+import path, { dirname } from 'node:path'
+import { fileURLToPath } from 'node:url'
+
 
 import js from '@eslint/js'
 import tseslint from 'typescript-eslint'

frontend/graphql-codegen.ts

@@ -1,51 +1,68 @@
 import { CodegenConfig } from '@graphql-codegen/cli'
 
 const PUBLIC_API_URL = process.env.PUBLIC_API_URL || 'http://localhost:8000'
+type CsrfResponse = {
+  csrftoken?: string
+}
 
-export default (async (): Promise<CodegenConfig> => {
-  let response
+
+export default async function graphqlCodegenConfig(): Promise<CodegenConfig> {
+  let response: Response
 
   try {
     response = await fetch(`${PUBLIC_API_URL}/csrf/`, {
       method: 'GET',
     })
-  } catch {
-    /* eslint-disable no-console */
-    console.log('Failed to fetch CSRF token: make sure the backend is running.')
-    return
+  } catch (err) {
+    // eslint-disable-next-line no-console
+    console.error('Failed to fetch CSRF token: make sure the backend is running.', err)
+    throw new Error('Failed to fetch CSRF token', { cause: err })
   }
 
   if (!response.ok) {
     throw new Error(`Failed to fetch CSRF token: ${response.status} ${response.statusText}`)
   }
-  const csrfToken = (await response.json()).csrftoken
+
+  let body: unknown
+
+  try {
+    body = await response.json()
+  } catch (err) {
+    throw new Error(
+      `Failed to parse CSRF token response: ${response.status} ${response.statusText}`,
+      { cause: err }
+    )
+  }
+
+  const data = body as CsrfResponse
+
+  const csrfToken =
+  typeof data.csrftoken === 'string' && data.csrftoken.trim() !== ''
+    ? data.csrftoken
+    : null
+
+
+  if (!csrfToken) {
+    throw new Error("Failed to fetch CSRF token: missing or invalid 'csrftoken' in response body")
+  }
 
   return {
     documents: ['src/**/*.{ts,tsx}', '!src/types/__generated__/**'],
     generates: {
       './src/': {
         config: {
           avoidOptionals: {
-            // Use `null` for nullable fields instead of optionals
             field: true,
-            // Allow nullable input fields to remain unspecified
             inputValue: false,
           },
           defaultScalarType: 'any',
-          // Apollo Client always includes `__typename` fields
           nonOptionalTypename: true,
-          // Apollo Client doesn't add the `__typename` field to root types so
-          // don't generate a type for the `__typename` for root operation types.
           skipTypeNameForRoot: true,
         },
-        // Order of plugins matter
         plugins: ['typescript-operations', 'typed-document-node'],
         preset: 'near-operation-file',
         presetConfig: {
-          // This should be the file generated by the "typescript" plugin above,
-          // relative to the directory specified for this configuration
           baseTypesPath: './types/__generated__/graphql.ts',
-          // Relative to the source files
           folder: '../../types/__generated__',
         },
       },
@@ -62,7 +79,6 @@ export default (async (): Promise<CodegenConfig> => {
         plugins: ['typescript'],
       },
     },
-    // Don't exit with non-zero status when there are no documents
     ignoreNoDocuments: true,
     overwrite: true,
     schema: {
@@ -74,4 +90,4 @@ export default (async (): Promise<CodegenConfig> => {
       },
     },
   }
-})()
+}