simplify field value type

Author: tylim88

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "firelord",
-	"version": "2.8.16",
+	"version": "2.8.17",
 	"description": "🔥 Write V9 like Firestore Admin code with extreme type safety.",
 	"author": "tylim",
 	"license": "MIT",

src/fieldValues/deleteField.ts

@@ -7,5 +7,4 @@ import { Delete } from '../types'
  *
  * @return The FieldValue sentinel for use in a call to set() or update().
  */
-// @ts-expect-error
-export const deleteField = (): Delete => FieldValue.delete()
+export const deleteField = () => FieldValue.delete() as Delete

src/fieldValues/documentId.ts

@@ -1,9 +1,7 @@
-import { __name__ } from '../types'
-
 /**
  * Returns a special sentinel `FieldPath` to refer to the ID of a document.
  * It can be used in queries to sort or filter by the document ID.
  * documentId() no longer play any significant role because you can replace it with string `__name__`.
  * It is kept for backward compatibility.
  */
-export const documentId = (): __name__ => '__name__'
+export const documentId = () => '__name__' as const

src/fieldValues/increment.ts

@@ -18,5 +18,4 @@ import { Increment } from '../types'
  * @return The FieldValue sentinel for use in a call to set(), create() or
  * update().
  */
-// @ts-expect-error
-export const increment = (n: number): Increment => FieldValue.increment(n)
+export const increment = (n: number) => FieldValue.increment(n) as Increment

src/fieldValues/serverTimestamp.ts

@@ -9,6 +9,5 @@ import { ServerTimestamp } from '../types'
  * update().
  */
 
-export const serverTimestamp = (): ServerTimestamp =>
-	// @ts-expect-error
-	FieldValue.serverTimestamp()
+export const serverTimestamp = () =>
+	FieldValue.serverTimestamp() as ServerTimestamp