diff --git a/lib/config.ts b/lib/config.ts
index 6461b75..99a22ef 100644
--- a/lib/config.ts
+++ b/lib/config.ts
@@ -5,201 +5,200 @@
  * for optional depenencies.
  */
 
- import { parsePageId } from 'notion-utils'
- import posthog from 'posthog-js'
- import { getEnv, getSiteConfig } from './get-config-value'
- import { NavigationLink } from './site-config'
- import {
-   PageUrlOverridesInverseMap,
-   PageUrlOverridesMap,
-   NavigationStyle,
-   Site
- } from './types'
- 
- export const rootNotionPageId: string = parsePageId(
-   getSiteConfig('rootNotionPageId'),
-   { uuid: false }
- )
- 
- if (!rootNotionPageId) {
-   throw new Error('Config error invalid "rootNotionPageId"')
- }
- 
- // if you want to restrict pages to a single notion workspace (optional)
- export const rootNotionSpaceId: string | null = parsePageId(
-   getSiteConfig('rootNotionSpaceId', null),
-   { uuid: true }
- )
- 
- export const pageUrlOverrides = cleanPageUrlMap(
-   getSiteConfig('pageUrlOverrides', {}) || {},
-   { label: 'pageUrlOverrides' }
- )
- 
- export const pageUrlAdditions = cleanPageUrlMap(
-   getSiteConfig('pageUrlAdditions', {}) || {},
-   { label: 'pageUrlAdditions' }
- )
- 
- export const inversePageUrlOverrides = invertPageUrlOverrides(pageUrlOverrides)
- 
- export const environment = process.env.NODE_ENV || 'development'
- export const isDev = environment === 'development'
- 
- // general site config
- export const name: string = getSiteConfig('name')
- export const author: string = getSiteConfig('author')
- export const domain: string = getSiteConfig('domain')
- export const description: string = getSiteConfig('description', 'Notion Blog')
- export const language: string = getSiteConfig('language', 'en')
- 
- // social accounts
- export const twitter: string | null = getSiteConfig('twitter', null)
- export const github: string | null = getSiteConfig('github', null)
- export const youtube: string | null = getSiteConfig('youtube', null)
- export const linkedin: string | null = getSiteConfig('linkedin', null)
- export const zhihu: string | null = getSiteConfig('zhihu', null)
- 
- // default notion values for site-wide consistency (optional; may be overridden on a per-page basis)
- export const defaultPageIcon: string | null = getSiteConfig(
-   'defaultPageIcon',
-   null
- )
- export const defaultPageCover: string | null = getSiteConfig(
-   'defaultPageCover',
-   null
- )
- export const defaultPageCoverPosition: number = getSiteConfig(
-   'defaultPageCoverPosition',
-   0.5
- )
- 
- // Optional whether or not to enable support for LQIP preview images
- export const isPreviewImageSupportEnabled: boolean = getSiteConfig(
-   'isPreviewImageSupportEnabled',
-   false
- )
- 
- // Optional whether or not to include the Notion ID in page URLs or just use slugs
- export const includeNotionIdInUrls: boolean = getSiteConfig(
-   'includeNotionIdInUrls',
-   !!isDev
- )
- 
- export const navigationStyle: NavigationStyle = getSiteConfig(
-   'navigationStyle',
-   'default'
- )
- 
- export const navigationLinks: Array<NavigationLink | null> = getSiteConfig(
-   'navigationLinks',
-   null
- )
- 
- // Optional site search
- export const isSearchEnabled: boolean = getSiteConfig('isSearchEnabled', true)
- 
- // ----------------------------------------------------------------------------
- 
- // Optional redis instance for persisting preview images
- export const isRedisEnabled: boolean =
-   getSiteConfig('isRedisEnabled', false) || !!getEnv('REDIS_ENABLED', null)
- 
- // (if you want to enable redis, only REDIS_HOST and REDIS_PASSWORD are required)
- // we recommend that you store these in a local `.env` file
- export const redisHost: string | null = getEnv('REDIS_HOST', null)
- export const redisPassword: string | null = getEnv('REDIS_PASSWORD', null)
- export const redisUser: string = getEnv('REDIS_USER', 'default')
- export const redisUrl = getEnv(
-   'REDIS_URL',
-   `redis://${redisUser}:${redisPassword}@${redisHost}`
- )
- export const redisNamespace: string | null = getEnv(
-   'REDIS_NAMESPACE',
-   'preview-images'
- )
- 
- // ----------------------------------------------------------------------------
- 
- export const isServer = typeof window === 'undefined'
- 
- export const port = getEnv('PORT', '3000')
- export const host = isDev ? `http://localhost:${port}` : `https://${domain}`
- 
- export const apiBaseUrl = `/api`
- 
- export const api = {
-   searchNotion: `${apiBaseUrl}/search-notion`,
-   getSocialImage: `${apiBaseUrl}/social-image`
- }
- 
- // ----------------------------------------------------------------------------
- 
- export const site: Site = {
-   domain,
-   name,
-   rootNotionPageId,
-   rootNotionSpaceId,
-   description
- }
- 
- export const fathomId = isDev ? null : process.env.NEXT_PUBLIC_FATHOM_ID
- export const fathomConfig = fathomId
-   ? {
-       excludedDomains: ['localhost', 'localhost:3000']
-     }
-   : undefined
- 
- export const posthogId = process.env.NEXT_PUBLIC_POSTHOG_ID
- export const posthogConfig: posthog.Config = {
-   api_host: 'https://app.posthog.com'
- }
- 
- function cleanPageUrlMap(
-   pageUrlMap: PageUrlOverridesMap,
-   {
-     label
-   }: {
-     label: string
-   }
- ): PageUrlOverridesMap {
-   return Object.keys(pageUrlMap).reduce((acc, uri) => {
-     const pageId = pageUrlMap[uri]
-     const uuid = parsePageId(pageId, { uuid: false })
- 
-     if (!uuid) {
-       throw new Error(`Invalid ${label} page id "${pageId}"`)
-     }
- 
-     if (!uri) {
-       throw new Error(`Missing ${label} value for page "${pageId}"`)
-     }
- 
-     if (!uri.startsWith('/')) {
-       throw new Error(
-         `Invalid ${label} value for page "${pageId}": value "${uri}" should be a relative URI that starts with "/"`
-       )
-     }
- 
-     const path = uri.slice(1)
- 
-     return {
-       ...acc,
-       [path]: uuid
-     }
-   }, {})
- }
- 
- function invertPageUrlOverrides(
-   pageUrlOverrides: PageUrlOverridesMap
- ): PageUrlOverridesInverseMap {
-   return Object.keys(pageUrlOverrides).reduce((acc, uri) => {
-     const pageId = pageUrlOverrides[uri]
- 
-     return {
-       ...acc,
-       [pageId]: uri
-     }
-   }, {})
- }
- 
\ No newline at end of file
+import { parsePageId } from 'notion-utils'
+import posthog from 'posthog-js'
+import { getEnv, getSiteConfig } from './get-config-value'
+import { NavigationLink } from './site-config'
+import {
+  PageUrlOverridesInverseMap,
+  PageUrlOverridesMap,
+  NavigationStyle,
+  Site
+} from './types'
+
+export const rootNotionPageId: string = parsePageId(
+  getSiteConfig('rootNotionPageId'),
+  { uuid: false }
+)
+
+if (!rootNotionPageId) {
+  throw new Error('Config error invalid "rootNotionPageId"')
+}
+
+// if you want to restrict pages to a single notion workspace (optional)
+export const rootNotionSpaceId: string | null = parsePageId(
+  getSiteConfig('rootNotionSpaceId', null),
+  { uuid: true }
+)
+
+export const pageUrlOverrides = cleanPageUrlMap(
+  getSiteConfig('pageUrlOverrides', {}) || {},
+  { label: 'pageUrlOverrides' }
+)
+
+export const pageUrlAdditions = cleanPageUrlMap(
+  getSiteConfig('pageUrlAdditions', {}) || {},
+  { label: 'pageUrlAdditions' }
+)
+
+export const inversePageUrlOverrides = invertPageUrlOverrides(pageUrlOverrides)
+
+export const environment = process.env.NODE_ENV || 'development'
+export const isDev = environment === 'development'
+
+// general site config
+export const name: string = getSiteConfig('name')
+export const author: string = getSiteConfig('author')
+export const domain: string = getSiteConfig('domain')
+export const description: string = getSiteConfig('description', 'Notion Blog')
+export const language: string = getSiteConfig('language', 'en')
+
+// social accounts
+export const twitter: string | null = getSiteConfig('twitter', null)
+export const github: string | null = getSiteConfig('github', null)
+export const youtube: string | null = getSiteConfig('youtube', null)
+export const linkedin: string | null = getSiteConfig('linkedin', null)
+export const zhihu: string | null = getSiteConfig('zhihu', null)
+
+// default notion values for site-wide consistency (optional; may be overridden on a per-page basis)
+export const defaultPageIcon: string | null = getSiteConfig(
+  'defaultPageIcon',
+  null
+)
+export const defaultPageCover: string | null = getSiteConfig(
+  'defaultPageCover',
+  null
+)
+export const defaultPageCoverPosition: number = getSiteConfig(
+  'defaultPageCoverPosition',
+  0.5
+)
+
+// Optional whether or not to enable support for LQIP preview images
+export const isPreviewImageSupportEnabled: boolean = getSiteConfig(
+  'isPreviewImageSupportEnabled',
+  false
+)
+
+// Optional whether or not to include the Notion ID in page URLs or just use slugs
+export const includeNotionIdInUrls: boolean = getSiteConfig(
+  'includeNotionIdInUrls',
+  !!isDev
+)
+
+export const navigationStyle: NavigationStyle = getSiteConfig(
+  'navigationStyle',
+  'default'
+)
+
+export const navigationLinks: Array<NavigationLink | null> = getSiteConfig(
+  'navigationLinks',
+  null
+)
+
+// Optional site search
+export const isSearchEnabled: boolean = getSiteConfig('isSearchEnabled', true)
+
+// ----------------------------------------------------------------------------
+
+// Optional redis instance for persisting preview images
+export const isRedisEnabled: boolean =
+  getSiteConfig('isRedisEnabled', false) || !!getEnv('REDIS_ENABLED', null)
+
+// (if you want to enable redis, only REDIS_HOST and REDIS_PASSWORD are required)
+// we recommend that you store these in a local `.env` file
+export const redisHost: string | null = getEnv('REDIS_HOST', null)
+export const redisPassword: string | null = getEnv('REDIS_PASSWORD', null)
+export const redisUser: string = getEnv('REDIS_USER', 'default')
+export const redisUrl = getEnv(
+  'REDIS_URL',
+  `redis://${redisUser}:${redisPassword}@${redisHost}`
+)
+export const redisNamespace: string | null = getEnv(
+  'REDIS_NAMESPACE',
+  'preview-images'
+)
+
+// ----------------------------------------------------------------------------
+
+export const isServer = typeof window === 'undefined'
+
+export const port = getEnv('PORT', '3000')
+export const host = isDev ? `http://localhost:${port}` : `https://${domain}`
+
+export const apiBaseUrl = `/api`
+
+export const api = {
+  searchNotion: `${apiBaseUrl}/search-notion`,
+  getSocialImage: `${apiBaseUrl}/social-image`
+}
+
+// ----------------------------------------------------------------------------
+
+export const site: Site = {
+  domain,
+  name,
+  rootNotionPageId,
+  rootNotionSpaceId,
+  description
+}
+
+export const fathomId = isDev ? null : process.env.NEXT_PUBLIC_FATHOM_ID
+export const fathomConfig = fathomId
+  ? {
+    excludedDomains: ['localhost', 'localhost:3000']
+  }
+  : undefined
+
+export const posthogId = process.env.NEXT_PUBLIC_POSTHOG_ID
+export const posthogConfig: posthog.Config = {
+  api_host: 'https://app.posthog.com'
+}
+
+function cleanPageUrlMap(
+  pageUrlMap: PageUrlOverridesMap,
+  {
+    label
+  }: {
+    label: string
+  }
+): PageUrlOverridesMap {
+  return Object.keys(pageUrlMap).reduce((acc, uri) => {
+    const pageId = pageUrlMap[uri]
+    const uuid = parsePageId(pageId, { uuid: false })
+
+    if (!uuid) {
+      throw new Error(`Invalid ${label} page id "${pageId}"`)
+    }
+
+    if (!uri) {
+      throw new Error(`Missing ${label} value for page "${pageId}"`)
+    }
+
+    if (!uri.startsWith('/')) {
+      throw new Error(
+        `Invalid ${label} value for page "${pageId}": value "${uri}" should be a relative URI that starts with "/"`
+      )
+    }
+
+    const path = uri.slice(1)
+
+    return {
+      ...acc,
+      [path]: uuid
+    }
+  }, {})
+}
+
+function invertPageUrlOverrides(
+  pageUrlOverrides: PageUrlOverridesMap
+): PageUrlOverridesInverseMap {
+  return Object.keys(pageUrlOverrides).reduce((acc, uri) => {
+    const pageId = pageUrlOverrides[uri]
+
+    return {
+      ...acc,
+      [pageId]: uri
+    }
+  }, {})
+}