fix: ensure stdlib packages get resolved from latest code in doctest

---
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: passed
  - 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: na
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---

Author: Planeshifter

lib/node_modules/@stdlib/_tools/eslint/rules/doctest/lib/main.js

@@ -26,6 +26,7 @@ var join = require( 'path' ).join;
 var format = require( 'util' ).format;
 var dirname = require( 'path' ).dirname;
 var logger = require( 'debug' );
+var rootDir = require( '@stdlib/_tools/utils/root-dir' );
 var Buffer = require( '@stdlib/buffer/ctor' );
 var isNull = require( '@stdlib/assert/is-null' );
 var isString = require( '@stdlib/assert/is-string' ).isPrimitive;
@@ -43,6 +44,7 @@ var windowShim = require( './window.js' );
 // VARIABLES //
 
 var debug = logger( 'doctest' );
+var ROOT_DIR = rootDir();
 var RE_JSDOC = /\/\*\*[\s\S]+?\*\//g;
 var RE_ESLINT_INLINE = / ?\/\/ eslint-disable-(?:next-)?line[^\n]*\n/g;
 var RE_NEWLINE = /\r?\n/g;
@@ -137,9 +139,16 @@ function main( context ) {
 	* @returns {*} required module
 	*/
 	function customRequire( path ) {
+		var stdlibPath;
+
 		if ( startsWith( path, './' ) ) {
 			return require( join( dir, path ) ); // eslint-disable-line stdlib/no-dynamic-require
 		}
+		// Force `@stdlib` packages to be loaded from `lib/node_modules/@stdlib`:
+		if ( startsWith( path, '@stdlib/' ) ) {
+			stdlibPath = join( ROOT_DIR, 'lib', 'node_modules', path );
+			return require( stdlibPath ); // eslint-disable-line stdlib/no-dynamic-require
+		}
 		return require( path ); // eslint-disable-line stdlib/no-dynamic-require
 	}
 	scope = {

lib/node_modules/@stdlib/_tools/eslint/rules/jsdoc-doctest/lib/main.js

@@ -27,6 +27,7 @@ var format = require( 'util' ).format;
 var dirname = require( 'path' ).dirname;
 var logger = require( 'debug' );
 var parseJSDoc = require( 'doctrine' ).parse;
+var rootDir = require( '@stdlib/_tools/utils/root-dir' );
 var Buffer = require( '@stdlib/buffer/ctor' );
 var isNull = require( '@stdlib/assert/is-null' );
 var isNumber = require( '@stdlib/assert/is-number' );
@@ -46,6 +47,7 @@ var windowShim = require( './window.js' );
 // VARIABLES //
 
 var debug = logger( 'jsdoc-doctest' );
+var ROOT_DIR = rootDir();
 var RE_ANNOTATION = /(?:\n|^)(?:var|let|const)? ?([a-zA-Z0-9._]+) ?=?[^;]*;\n\/\/ ?(returns|([A-Za-z][A-Za-z_0-9]*)? ?=>|throws) {0,1}([\s\S]*?)(\n|$)/g;
 var RE_CONSOLE = /console\.(?:dir|error|log)/;
 var RE_MODULE_TAG = /\* @module[^\n]*\n/g;
@@ -147,9 +149,16 @@ function main( context ) {
 	* @returns {*} required module
 	*/
 	function customRequire( path ) {
+		var stdlibPath;
+
 		if ( startsWith( path, './' ) ) {
 			return require( join( dir, path ) ); // eslint-disable-line stdlib/no-dynamic-require
 		}
+		// Force `@stdlib` packages to be loaded from `lib/node_modules/@stdlib`:
+		if ( startsWith( path, '@stdlib/' ) ) {
+			stdlibPath = join( ROOT_DIR, 'lib', 'node_modules', path );
+			return require( stdlibPath ); // eslint-disable-line stdlib/no-dynamic-require
+		}
 		return require( path ); // eslint-disable-line stdlib/no-dynamic-require
 	}
 	scope = {