feat: Support "group" in people property values

README.md

@@ -155,7 +155,7 @@ index とは `toContent` が返す iterator から取得したときに `props`
 - [ ] formula
 - [x] title - plain text へ変換される
 - [x] rich_text - plain text へ変換される
-- [x] people - [People property values](https://developers.notion.com/reference/property-item-object#people-property-values)を出力(`person` のみ対応、`null` と `undefined` は `''` へ変換される)
+- [x] people - [People property values](https://developers.notion.com/reference/property-item-object#people-property-values)を出力(`person` と `group` に対応、`null` と `undefined` は `''` へ変換される)
 - [x] relation - id の配列へ変換
 - [ ] rollup
 

src/lib/props.ts

@@ -2,7 +2,8 @@ import { PageObjectResponse } from '@notionhq/client/build/src/api-endpoints'
 import type {
   PartialUserObjectResponse,
   UserObjectResponse,
-  PersonUserObjectResponse
+  PersonUserObjectResponse,
+  GroupObjectResponse
 } from '@notionhq/client/build/src/api-endpoints'
 import { PropsItem, PropsItemValue } from './types'
 
@@ -11,7 +12,7 @@ function isPersonUserObjectResponse(v: any): v is PersonUserObjectResponse {
 }
 
 function userToPersonItems(
-  user: PartialUserObjectResponse | UserObjectResponse
+  user: PartialUserObjectResponse | UserObjectResponse | GroupObjectResponse
 ) {
   if (isPersonUserObjectResponse(user)) {
     return {
@@ -22,6 +23,11 @@ function userToPersonItems(
       }
     }
   }
+  if (user.object === 'group') {
+    return {
+      name: user.name !== null ? user.name : ''
+    }
+  }
   return {
     name: '',
     avatar_url: '',

src/lib/types.ts

@@ -28,19 +28,29 @@ export type PropsItemValue =
       time_zone: string
     }
   | {
+      // user
       name: string
       avatar_url: string
       person: {
         email: string
       }
     }
   | {
+      // user(array)
       name: string
       avatar_url: string
       person: {
         email: string
       }
     }[]
+  | {
+      // group
+      name: string
+    }
+  | {
+      // group(array)
+      name: string
+    }[]
 
 export type PropsItem = Record<string, PropsItemValue>
 

test/lib/props.spec.ts

@@ -447,6 +447,52 @@ describe('propsToItems()', () => {
     ).toEqual({ 'test-rich': 'text1text2' })
   })
 
+  it('should convert group properties to items', async () => {
+    const propsToItems = new PropsToItems()
+    expect(
+      await propsToItems.toItems({
+        'test-group': {
+          id: '',
+          type: 'people',
+          people: [
+            {
+              id: 'person-id-1',
+              name: 'hankei6km-grp-1',
+              object: 'group'
+            },
+            {
+              id: 'person-id-2',
+              name: 'hankei6km-grp-2',
+              object: 'group'
+            }
+          ]
+        }
+      })
+    ).toEqual({
+      'test-group': [
+        {
+          name: 'hankei6km-grp-1'
+        },
+        { name: 'hankei6km-grp-2' }
+      ]
+    })
+    expect(
+      await propsToItems.toItems({
+        'test-group': {
+          id: '',
+          type: 'people',
+          people: [
+            {
+              id: 'person-id-1',
+              name: null,
+              object: 'group'
+            }
+          ]
+        }
+      })
+    ).toEqual({ 'test-group': [{ name: '' }] })
+  })
+
   it('should convert people properties to items', async () => {
     const propsToItems = new PropsToItems()
     expect(