refactor: use assert utility

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
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    status: passed
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---

Author: kgryte

lib/node_modules/@stdlib/dstructs/struct/lib/is_struct_type.js

@@ -20,10 +20,10 @@
 
 // MODULES //
 
+var isStructConstructorLike = require( '@stdlib/assert/is-struct-constructor-like' );
 var contains = require( '@stdlib/array/base/assert/contains' );
 var join = require( '@stdlib/array/base/join' );
 var format = require( '@stdlib/string/format' );
-var isStructType = require( './is_struct_type.js' );
 var DTYPES = require( './dtypes.js' );
 
 
@@ -37,7 +37,7 @@ var DTYPES = require( './dtypes.js' );
 * @returns {(null|TypeError)} error object or null
 */
 function isValidType( value ) {
-	if ( contains( DTYPES, value ) || isStructType( value ) ) {
+	if ( contains( DTYPES, value ) || isStructConstructorLike( value ) ) {
 		return null;
 	}
 	return new TypeError( format( 'invalid argument. `%s` field must be either a struct type or one of the following: "%s". Value: `%s`.', 'type', join( DTYPES, ', ' ), value ) );

lib/node_modules/@stdlib/dstructs/struct/lib/is_valid_type.js

@@ -20,12 +20,12 @@
 
 // MODULES //
 
+var isStructConstructorLike = require( '@stdlib/assert/is-struct-constructor-like' );
 var hasProp = require( '@stdlib/assert/has-property' );
 var join = require( '@stdlib/array/base/join' );
 var constantFunction = require( '@stdlib/utils/constant-function' );
 var format = require( '@stdlib/string/format' );
 var hasProperties = require( './has_properties.js' );
-var isStructType = require( './is_struct_type.js' );
 var isValidNonEmptyString = require( './is_valid_nonempty_string.js' );
 var isValidString = require( './is_valid_string.js' );
 var isValidPositiveInteger = require( './is_valid_positive_integer.js' );
@@ -89,7 +89,7 @@ function normalize( obj, keys ) {
 	if ( !hasProperties( out, MANDATORY_FIELD_NAMES ) ) {
 		return new TypeError( format( 'invalid argument. Field objects must have the following properties: "%s". Value: `%s`.', join( MANDATORY_FIELD_NAMES, ', ' ), JSON.stringify( obj ) ) );
 	}
-	out.isStructType = isStructType( out.type );
+	out.isStructType = isStructConstructorLike( out.type );
 	out.byteLength = byteLength( out );
 	if ( out.isStructType ) {
 		out.alignment = out.type.alignment;