refactor: rename indexing to index and add defaults for specialized index data types

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---

Author: kgryte

lib/node_modules/@stdlib/ndarray/defaults/README.md

@@ -63,7 +63,10 @@ The returned object has the following properties:
     -   **signed_integer**: default signed integer data type.
     -   **unsigned_integer**: default unsigned integer data type.
     -   **boolean**: default boolean data type.
-    -   **indexing**: default indexing data type.
+    -   **index**: default index data type.
+    -   **integer_index**: default integer index data type.
+    -   **boolean_index**: default boolean index data type.
+    -   **mask_index**: default mask index data type.
 
 -   **order**: default memory layout.
 

lib/node_modules/@stdlib/ndarray/defaults/docs/repl.txt

@@ -40,8 +40,17 @@
     out.dtypes.boolean: string
         Default boolean data type.
 
-    out.dtypes.indexing: string
-        Default indexing data type.
+    out.dtypes.index: string
+        Default index data type.
+
+    out.dtypes.integer_index: string
+        Default integer index data type.
+
+    out.dtypes.boolean_index: string
+        Default boolean index data type.
+
+    out.dtypes.mask_index: string
+        Default mask index data type.
 
     out.order: string
         Default memory layout.

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

@@ -73,9 +73,24 @@ interface DataTypes {
 	boolean: 'bool';
 
 	/**
-	* Default indexing data type.
+	* Default index data type.
 	*/
-	indexing: 'int32';
+	index: 'int32';
+
+	/**
+	* Default integer index data type.
+	*/
+	integer_index: 'int32';
+
+	/**
+	* Default boolean index data type.
+	*/
+	boolean_index: 'bool';
+
+	/**
+	* Default mask index data type.
+	*/
+	mask_index: 'uint8';
 }
 
 /**

lib/node_modules/@stdlib/ndarray/defaults/lib/main.js

@@ -43,7 +43,10 @@ function defaults() {
 			'signed_integer': 'int32',
 			'unsigned_integer': 'uint32',
 			'boolean': 'bool',
-			'indexing': 'int32'
+			'index': 'int32',
+			'integer_index': 'int32',
+			'boolean_index': 'bool',
+			'mask_index': 'uint8'
 		},
 
 		// Memory layout:

lib/node_modules/@stdlib/ndarray/defaults/test/test.get.js

@@ -55,7 +55,10 @@ tape( 'if provided a recognized setting, the function returns a default value',
 		'dtypes.signed_integer',
 		'dtypes.unsigned_integer',
 		'dtypes.boolean',
-		'dtypes.indexing',
+		'dtypes.index',
+		'dtypes.integer_index',
+		'dtypes.boolean_index',
+		'dtypes.mask_index',
 
 		'casting',
 		'order',
@@ -72,7 +75,10 @@ tape( 'if provided a recognized setting, the function returns a default value',
 		DEFAULTS.dtypes.signed_integer,
 		DEFAULTS.dtypes.unsigned_integer,
 		DEFAULTS.dtypes.boolean,
-		DEFAULTS.dtypes.indexing,
+		DEFAULTS.dtypes.index,
+		DEFAULTS.dtypes.integer_index,
+		DEFAULTS.dtypes.boolean_index,
+		DEFAULTS.dtypes.mask_index,
 
 		DEFAULTS.casting,
 		DEFAULTS.order,

lib/node_modules/@stdlib/ndarray/defaults/test/test.main.js

@@ -69,8 +69,17 @@ tape( 'the function returns default ndarray settings', function test( t ) {
 	t.strictEqual( hasOwnProp( o.dtypes, 'boolean' ), true, 'has property' );
 	t.strictEqual( typeof o.dtypes.boolean, 'string', 'returns expected value' );
 
-	t.strictEqual( hasOwnProp( o.dtypes, 'indexing' ), true, 'has property' );
-	t.strictEqual( typeof o.dtypes.indexing, 'string', 'returns expected value' );
+	t.strictEqual( hasOwnProp( o.dtypes, 'index' ), true, 'has property' );
+	t.strictEqual( typeof o.dtypes.index, 'string', 'returns expected value' );
+
+	t.strictEqual( hasOwnProp( o.dtypes, 'integer_index' ), true, 'has property' );
+	t.strictEqual( typeof o.dtypes.integer_index, 'string', 'returns expected value' );
+
+	t.strictEqual( hasOwnProp( o.dtypes, 'boolean_index' ), true, 'has property' );
+	t.strictEqual( typeof o.dtypes.boolean_index, 'string', 'returns expected value' );
+
+	t.strictEqual( hasOwnProp( o.dtypes, 'mask_index' ), true, 'has property' );
+	t.strictEqual( typeof o.dtypes.mask_index, 'string', 'returns expected value' );
 
 	t.strictEqual( hasOwnProp( o, 'order' ), true, 'has property' );
 	t.strictEqual( typeof o.order, 'string', 'returns expected value' );