fix: update return type

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type: pre_commit_static_analysis_report
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---

Author: kgryte

lib/node_modules/@stdlib/ndarray/base/dtypes2enums/docs/types/index.d.ts

@@ -40,7 +40,7 @@ import { DataType } from '@stdlib/types/ndarray';
 * var out = dtypes2enums( [ 'foo', 'bar' ] );
 * // returns [ null, null ]
 */
-declare function dtypes2enums( dtypes: ArrayLike<DataType> ): Array<number>;
+declare function dtypes2enums( dtypes: ArrayLike<DataType> ): Array<number|null>;
 
 
 // EXPORTS //

lib/node_modules/@stdlib/ndarray/base/dtypes2enums/docs/types/test.ts

@@ -23,7 +23,7 @@ import dtypes2enums = require( './index' );
 
 // The function returns an array of numbers...
 {
-	dtypes2enums( [ 'float64', 'float64' ] ); // $ExpectType number[]
+	dtypes2enums( [ 'float64', 'float64' ] ); // $ExpectType (number | null)[]
 }
 
 // The compiler throws an error if the function is not provided an array-like object containing data types...