Prune undefined env values and fix afdian check

Introduce a recursive pruneUndefined helper to remove undefined values from env/config objects instead of using JSON.stringify/parse. Apply it in loadEnvCredentials and loadEnv to produce clean credential/config shapes. Also tighten the afdian presence check in providers (use optional chaining) to avoid errors when config.afdian is absent.

Author: ReenigneArcher

src/configs/credentials.ts

@@ -33,10 +33,24 @@ interface ConfigWithCredentials extends ContribkitConfig {
   credentials?: EnvCredentials
 }
 
+export function pruneUndefined<T>(value: T): T {
+  if (Array.isArray(value))
+    return value.map(item => pruneUndefined(item)) as T
+
+  if (!value || typeof value !== 'object')
+    return value
+
+  return Object.fromEntries(
+    Object.entries(value)
+      .filter(([, item]) => item !== undefined)
+      .map(([key, item]) => [key, pruneUndefined(item)]),
+  ) as T
+}
+
 export function loadEnvCredentials(): EnvCredentials {
   dotenv.config({ quiet: true })
 
-  return JSON.parse(JSON.stringify({
+  return pruneUndefined({
     github: {
       token: process.env.CONTRIBKIT_GITHUB_TOKEN || process.env.GITHUB_TOKEN,
     },
@@ -61,7 +75,7 @@ export function loadEnvCredentials(): EnvCredentials {
     githubContributions: {
       token: process.env.CONTRIBKIT_GITHUB_CONTRIBUTIONS_TOKEN,
     },
-  }))
+  })
 }
 
 export function getCredentials(config: ContribkitConfig): EnvCredentials {

src/configs/env.ts

@@ -1,7 +1,7 @@
 import type { ContribkitConfig, GitHubAccountType } from '../types'
 import process from 'node:process'
 import dotenv from 'dotenv'
-import { loadEnvCredentials } from './credentials'
+import { loadEnvCredentials, pruneUndefined } from './credentials'
 
 export interface EnvConfig {
   config: Partial<ContribkitConfig>
@@ -57,7 +57,7 @@ export function loadEnv(): EnvConfig {
 
   // remove undefined keys
   return {
-    config: JSON.parse(JSON.stringify(config)),
+    config: pruneUndefined(config),
     credentials: loadEnvCredentials(),
   }
 }

src/providers/index.ts

@@ -38,7 +38,7 @@ export function guessProviders(config: ContribkitConfig) {
   if (config.opencollective && (config.opencollective.id || config.opencollective.slug || config.opencollective.githubHandle))
     items.push('opencollective')
 
-  if (config.afdian && config.afdian.userId && credentials.afdian?.token)
+  if (config.afdian?.userId && credentials.afdian?.token)
     items.push('afdian')
 
   if (credentials.polar?.token)