feat: typecheck table names in from clause

Author: vonovak

src/SupabaseClient.ts

@@ -130,14 +130,12 @@ export default class SupabaseClient<
   }
 
   // NOTE: signatures must be kept in sync with PostgrestClient.from
-  from<
-    TableName extends string & keyof Schema['Tables'],
-    Table extends Schema['Tables'][TableName]
-  >(relation: TableName): PostgrestQueryBuilder<Schema, Table, TableName>
-  from<ViewName extends string & keyof Schema['Views'], View extends Schema['Views'][ViewName]>(
+  from<TableName extends keyof Schema['Tables'], Table extends Schema['Tables'][TableName]>(
+    relation: TableName
+  ): PostgrestQueryBuilder<Schema, Table, TableName>
+  from<ViewName extends keyof Schema['Views'], View extends Schema['Views'][ViewName]>(
     relation: ViewName
   ): PostgrestQueryBuilder<Schema, View, ViewName>
-  from(relation: string): PostgrestQueryBuilder<Schema, any, any>
   /**
    * Perform a query on a table or a view.
    *

test/index.test-d.ts

@@ -9,6 +9,7 @@ const supabase = createClient<Database>(URL, KEY)
 // table invalid type
 {
   expectError(supabase.from(42))
+  expectError(supabase.from('some_table_that_does_not_exist'))
 }
 
 // `null` can't be used with `.eq()`