chore: fix JavaScript lint errors (issue #6704)

Author: pxxad

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

@@ -130,6 +130,12 @@ function main( context ) {
 	sourceCode = replace( source.text, RE_JSDOC, '' );
 	sourceCode = replace( sourceCode, RE_ESLINT_INLINE, '\n' );
 	filename = context.getFilename();
+
+	// Skip virtual filenames used by ESLint in CI:
+	if ( !filename || filename === '<input>' || filename === '<text>' ) {
+		return {};
+	}
+
 	dir = dirname( filename );
 	/**
 	* Requires modules after converting relative to absolute paths.