fix: update TypeScript definitions to use keys instead of indices

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
  - task: lint_filenames
    status: passed
  - task: lint_editorconfig
    status: passed
  - task: lint_markdown
    status: na
  - task: lint_package_json
    status: na
  - task: lint_repl_help
    status: na
  - task: lint_javascript_src
    status: na
  - task: lint_javascript_cli
    status: na
  - task: lint_javascript_examples
    status: na
  - task: lint_javascript_tests
    status: na
  - task: lint_javascript_benchmarks
    status: na
  - task: lint_python
    status: na
  - task: lint_r
    status: na
  - task: lint_c_src
    status: na
  - task: lint_c_examples
    status: na
  - task: lint_c_benchmarks
    status: na
  - task: lint_c_tests_fixtures
    status: na
  - task: lint_shell
    status: na
  - task: lint_typescript_declarations
    status: passed
  - task: lint_typescript_tests
    status: passed
  - task: lint_license_headers
    status: passed
---

Author: Planeshifter

lib/node_modules/@stdlib/object/bifurcate-in/docs/types/index.d.ts

@@ -28,9 +28,9 @@ interface Options {
 	thisArg?: any;
 
 	/**
-	* If `'values'`, values are returned; if `'indices'`, indices are returned; if `'*'`, both indices and values are returned.
+	* If `'values'`, values are returned; if `'keys'`, keys are returned; if `'*'`, both keys and values are returned.
 	*/
-	returns?: 'values' | 'indices' | '*';
+	returns?: 'values' | 'keys' | '*';
 }
 
 /**

lib/node_modules/@stdlib/object/bifurcate-in/docs/types/test.ts

@@ -49,7 +49,7 @@ class Foo {
 	bifurcateIn( obj, predicate ); // $ExpectType any[][]
 	bifurcateIn( {}, predicate ); // $ExpectType any[][]
 	const opts = {
-		'returns': 'indices' as 'indices'
+		'returns': 'keys' as 'keys'
 	};
 	bifurcateIn( obj, opts, predicate ); // $ExpectType any[][]
 }
@@ -78,7 +78,7 @@ class Foo {
 	bifurcateIn( obj, null, predicate ); // $ExpectError
 }
 
-// The compiler throws an error if the function is provided a `returns` option which is not one of 'indices', 'values', or '*'...
+// The compiler throws an error if the function is provided a `returns` option which is not one of 'keys', 'values', or '*'...
 {
 	const obj = new Foo();
 	bifurcateIn( obj, { 'returns': '5' }, predicate ); // $ExpectError

lib/node_modules/@stdlib/utils/bifurcate-own/docs/types/index.d.ts

@@ -28,9 +28,9 @@ interface Options {
 	thisArg?: any;
 
 	/**
-	* If `'values'`, values are returned; if `'indices'`, indices are returned; if `'*'`, both indices and values are returned.
+	* If `'values'`, values are returned; if `'keys'`, keys are returned; if `'*'`, both keys and values are returned.
 	*/
-	returns?: 'values' | 'indices' | '*';
+	returns?: 'values' | 'keys' | '*';
 }
 
 /**

lib/node_modules/@stdlib/utils/bifurcate-own/docs/types/test.ts

@@ -49,7 +49,7 @@ class Foo {
 	bifurcateOwn( obj, predicate ); // $ExpectType any[][]
 	bifurcateOwn( {}, predicate ); // $ExpectType any[][]
 	const opts = {
-		'returns': 'indices' as 'indices'
+		'returns': 'keys' as 'keys'
 	};
 	bifurcateOwn( obj, opts, predicate ); // $ExpectType any[][]
 }
@@ -78,7 +78,7 @@ class Foo {
 	bifurcateOwn( obj, null, predicate ); // $ExpectError
 }
 
-// The compiler throws an error if the function is provided a `returns` option which is not one of 'indices', 'values', or '*'...
+// The compiler throws an error if the function is provided a `returns` option which is not one of 'keys', 'values', or '*'...
 {
 	const obj = new Foo();
 	bifurcateOwn( obj, { 'returns': '5' }, predicate ); // $ExpectError

lib/node_modules/@stdlib/utils/group-in/docs/types/index.d.ts

@@ -28,9 +28,9 @@ interface Options {
 	thisArg?: any;
 
 	/**
-	* If `'values'`, values are returned; if `'indices'`, indices are returned; if `'*'`, both indices and values are returned.
+	* If `'values'`, values are returned; if `'keys'`, keys are returned; if `'*'`, both keys and values are returned.
 	*/
-	returns?: 'values' | 'indices' | '*';
+	returns?: 'values' | 'keys' | '*';
 }
 
 /**

lib/node_modules/@stdlib/utils/group-in/docs/types/test.ts

@@ -49,7 +49,7 @@ class Foo {
 	groupIn( obj, indicator ); // $ExpectType any
 	groupIn( {}, indicator ); // $ExpectType any
 	const opts = {
-		'returns': 'indices' as 'indices'
+		'returns': 'keys' as 'keys'
 	};
 	groupIn( obj, opts, indicator ); // $ExpectType any
 }
@@ -78,7 +78,7 @@ class Foo {
 	groupIn( obj, null, indicator ); // $ExpectError
 }
 
-// The compiler throws an error if the function is provided a `returns` option which is not one of 'indices', 'values', or '*'...
+// The compiler throws an error if the function is provided a `returns` option which is not one of 'keys', 'values', or '*'...
 {
 	const obj = new Foo();
 	groupIn( obj, { 'returns': '5' }, indicator ); // $ExpectError

lib/node_modules/@stdlib/utils/group-own/docs/types/test.ts

@@ -49,7 +49,7 @@ class Foo {
 	groupOwn( obj, indicator ); // $ExpectType { [x: string]: string[]; }
 	groupOwn( {}, indicator ); // $ExpectType { [x: string]: never[]; }
 	const opts = {
-		'returns': 'indices' as const
+		'returns': 'keys' as const
 	};
 	groupOwn( obj, opts, indicator ); // $ExpectType { [x: string]: (keyof Foo)[]; }
 
@@ -97,7 +97,7 @@ class Foo {
 	groupOwn( obj, null, indicator ); // $ExpectError
 }
 
-// The compiler throws an error if the function is provided a `returns` option which is not one of 'indices', 'values', or '*'...
+// The compiler throws an error if the function is provided a `returns` option which is not one of 'keys', 'values', or '*'...
 {
 	const obj = new Foo();
 	groupOwn( obj, { 'returns': '5' }, indicator ); // $ExpectError