Update namespace TypeScript declarations

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

@@ -79,7 +79,9 @@ import flipud2d = require( '@stdlib/array/base/flipud2d' );
 import strided2array = require( '@stdlib/array/base/from-strided' );
 import getter = require( '@stdlib/array/base/getter' );
 import incrspace = require( '@stdlib/array/base/incrspace' );
+import indexOf = require( '@stdlib/array/base/index-of' );
 import last = require( '@stdlib/array/base/last' );
+import lastIndexOf = require( '@stdlib/array/base/last-index-of' );
 import linspace = require( '@stdlib/array/base/linspace' );
 import logspace = require( '@stdlib/array/base/logspace' );
 import map2d = require( '@stdlib/array/base/map2d' );
@@ -1612,6 +1614,36 @@ interface Namespace {
  */
  incrspace: typeof incrspace;
 
+ /**
+ * Returns the index of the first element which equals a provided search element.
+ *
+ * ## Notes
+ *
+ * - If unable to find an element which equals a provided search element, the function returns `-1`.
+ * - If `fromIndex` is less than zero, the starting index is resolved relative to the last array element, with the last array element corresponding to `fromIndex = -1`.
+ *
+ * @param x - input array
+ * @param searchElement - search element
+ * @param fromIndex - starting index (inclusive)
+ * @param equalNaNs - boolean indicating whether NaNs should be considered equal
+ * @returns index
+ *
+ * @example
+ * var x = [ 1, 2, 3, 4 ];
+ *
+ * var idx = ns.indexOf( x, 2, 0, false );
+ * // returns 1
+ *
+ * @example
+ * var Int32Array = require( '@stdlib/array/int32' );
+ *
+ * var x = new Int32Array( [ 1, 2, 3, 4 ] );
+ *
+ * var idx = ns.indexOf( x, 2, 0, false );
+ * // returns 1
+ */
+ indexOf: typeof indexOf;
+
  /**
  * Returns the last element of an array-like object.
  *
@@ -1626,6 +1658,37 @@ interface Namespace {
  */
  last: typeof last;
 
+ /**
+ * Returns the index of the last element which equals a provided search element.
+ *
+ * ## Notes
+ *
+ * - The function scans an input array from the starting index to the beginning of the array (i.e., backward).
+ * - If unable to find an element which equals a provided search element, the function returns `-1`.
+ * - If `fromIndex` is less than zero, the starting index is resolved relative to the last array element, with the last array element corresponding to `fromIndex = -1`.
+ *
+ * @param x - input array
+ * @param searchElement - search element
+ * @param fromIndex - starting index (inclusive)
+ * @param equalNaNs - boolean indicating whether NaNs should be considered equal
+ * @returns index
+ *
+ * @example
+ * var x = [ 1, 2, 3, 4 ];
+ *
+ * var idx = ns.lastIndexOf( x, 2, 3, false );
+ * // returns 1
+ *
+ * @example
+ * var Int32Array = require( '@stdlib/array/int32' );
+ *
+ * var x = new Int32Array( [ 1, 2, 3, 4 ] );
+ *
+ * var idx = ns.lastIndexOf( x, 2, 3, false );
+ * // returns 1
+ */
+ lastIndexOf: typeof lastIndexOf;
+
  /**
  * Generates a linearly spaced numeric array.
  *