build: handle external scoped packages correctly

---
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: passed
  - 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/require-file-extensions/lib/main.js

@@ -102,6 +102,7 @@ function main( context ) {
 	*/
 	function validate( node ) {
 		var requirePath;
+		var slashIndex;
 		var filename;
 		var resolved;
 		var parts;
@@ -111,11 +112,24 @@ function main( context ) {
 		if ( node.callee.name === 'require' ) {
 			requirePath = node.arguments[ 0 ].value;
 			if ( isString( requirePath ) ) {
-				filename = context.getFilename();
-				dir = dirname( filename );
 				if ( startsWith( requirePath, '.' ) ) {
 					requirePath = path.resolve( dir, requirePath );
 				}
+				else if ( !startsWith( requirePath, '@stdlib' ) ) {
+					// Allow simple package names without slashes (e.g., 'tape', 'glob'):
+					if ( !contains( requirePath, '/' ) ) {
+						return;
+					}
+					// Only skip top-level scoped packages ('@scope/pkg'); still enforce extensions on deeper imports like '@scope/pkg/file.js':
+					if ( startsWith( requirePath, '@' ) ) {
+						slashIndex = requirePath.indexOf( '/' );
+						if ( slashIndex > 0 && requirePath.indexOf( '/', slashIndex + 1 ) === -1 ) {
+							return;
+						}
+					}
+				}
+				filename = context.getFilename();
+				dir = dirname( filename );
 				resolved = tryResolve( requirePath, dir );
 				parts = path.parse( requirePath );
 

lib/node_modules/@stdlib/_tools/eslint/rules/require-file-extensions/test/fixtures/invalid.js

@@ -76,6 +76,22 @@ test = {
 };
 invalid.push( test );
 
+test = {
+	'code': [
+		'// MODULES //',
+		'',
+		'var parser = require( \'@typescript-eslint/parser/dist/index\' );'
+	].join( '\n' ),
+	'errors': [
+		{
+			'message': 'require statement of file is missing a file extension. Value: @typescript-eslint/parser/dist/index',
+			'type': 'CallExpression'
+		}
+	],
+	'filename': resolve( './invalid.js' )
+};
+invalid.push( test );
+
 
 // EXPORTS //
 

lib/node_modules/@stdlib/_tools/eslint/rules/require-file-extensions/test/fixtures/valid.js

@@ -96,6 +96,16 @@ test = {
 };
 valid.push( test );
 
+test = {
+	'code': [
+		'// MODULES //',
+		'',
+		'var parser = require( \'@typescript-eslint/parser\' );'
+	].join( '\n' ),
+	'filename': resolve( './valid.js' )
+};
+valid.push( test );
+
 
 // EXPORTS //