diff --git a/lib/node_modules/@stdlib/_tools/eslint/rules/jsdoc-doctest/lib/main.js b/lib/node_modules/@stdlib/_tools/eslint/rules/jsdoc-doctest/lib/main.js
index c2f77c36ccf3..f6563bd8976e 100644
--- a/lib/node_modules/@stdlib/_tools/eslint/rules/jsdoc-doctest/lib/main.js
+++ b/lib/node_modules/@stdlib/_tools/eslint/rules/jsdoc-doctest/lib/main.js
@@ -48,7 +48,7 @@ var windowShim = require( './window.js' );
 
 var debug = logger( 'jsdoc-doctest' );
 var ROOT_DIR = rootDir();
-var RE_ANNOTATION = /(?:\n|^)(?!function\s|class\s)(?:var|let|const)? ?([a-zA-Z0-9._]+) ?=?[^;]*;\n\/\/ ?(returns|([A-Za-z][A-Za-z_0-9]*)? ?=>|throws) {0,1}([\s\S]*?)(\n|$)/g;
+var RE_ANNOTATION = /(?:\n|^)(?!function\s|class\s)(?:var|let|const)? ?([a-zA-Z0-9._]+) ?=?[^;]*;[ \t]*(?:\/\/[^\n]*)?\n\/\/ ?(returns|([A-Za-z][A-Za-z_0-9]*)? ?=>|throws) {0,1}([\s\S]*?)(\n|$)/g;
 var RE_CONSOLE = /console\.(?:dir|error|log)/;
 var RE_MODULE_TAG = /\* @module[^\n]*\n/g;
 var NODE_SHEBANG = /#!\/usr\/bin\/env node/;
diff --git a/lib/node_modules/@stdlib/_tools/eslint/rules/jsdoc-doctest/test/fixtures/invalid.js b/lib/node_modules/@stdlib/_tools/eslint/rules/jsdoc-doctest/test/fixtures/invalid.js
index 2776ab3a6a2d..5826065efbe7 100644
--- a/lib/node_modules/@stdlib/_tools/eslint/rules/jsdoc-doctest/test/fixtures/invalid.js
+++ b/lib/node_modules/@stdlib/_tools/eslint/rules/jsdoc-doctest/test/fixtures/invalid.js
@@ -1021,6 +1021,140 @@ test = {
 };
 invalid.push( test );
 
+test = {
+	'code': [
+		'\'use strict\'',
+		'',
+		'/**',
+		'* Squares a number.',
+		'*',
+		'* @param {number} x - input value',
+		'* @returns {number} x*x',
+		'* @example',
+		'* var y = square( 3.0 ); // x squared',
+		'* // returns 12.0',
+		'*',
+		'* y = square( 2.0 ); // x squared',
+		'* // returns 4.0',
+		'*/',
+		'function square( x ) {',
+		'  return x*x;',
+		'}'
+	].join( '\n' ),
+	'errors': [
+		{
+			'message': 'Displayed return value is `12.0`, but expected `9` instead',
+			'type': null
+		}
+	],
+	'output': [
+		'\'use strict\'',
+		'',
+		'/**',
+		'* Squares a number.',
+		'*',
+		'* @param {number} x - input value',
+		'* @returns {number} x*x',
+		'* @example',
+		'* var y = square( 3.0 ); // x squared',
+		'* // returns 9',
+		'*',
+		'* y = square( 2.0 ); // x squared',
+		'* // returns 4.0',
+		'*/',
+		'function square( x ) {',
+		'  return x*x;',
+		'}'
+	].join( '\n' )
+};
+invalid.push( test );
+
+test = {
+	'code': [
+		'/**',
+		'* Squares a number.',
+		'*',
+		'* @param {number} x - input value',
+		'* @returns {number} x*x',
+		'* @example',
+		'* console.log( square( 3.0 ) ); // x squared',
+		'* // => 12.0',
+		'*',
+		'* console.log( square( 2.0 ) ); // x squared',
+		'* // => 4.0',
+		'*/',
+		'function square( x ) {',
+		'  return x*x;',
+		'}'
+	].join( '\n' ),
+	'errors': [
+		{
+			'message': 'Displayed return value is `12.0`, but expected `9` instead',
+			'type': null
+		}
+	],
+	'output': [
+		'/**',
+		'* Squares a number.',
+		'*',
+		'* @param {number} x - input value',
+		'* @returns {number} x*x',
+		'* @example',
+		'* console.log( square( 3.0 ) ); // x squared',
+		'* // => 9',
+		'*',
+		'* console.log( square( 2.0 ) ); // x squared',
+		'* // => 4.0',
+		'*/',
+		'function square( x ) {',
+		'  return x*x;',
+		'}'
+	].join( '\n' )
+};
+invalid.push( test );
+
+test = {
+	'code': [
+		'\'use strict\'',
+		'',
+		'/**',
+		'* Squares a number.',
+		'*',
+		'* @param {number} x - input value',
+		'* @returns {number} x*x',
+		'* @example',
+		'* var y = square( 3.0 ); // oh; interesting',
+		'* // returns 12.0',
+		'*/',
+		'function square( x ) {',
+		'  return x*x;',
+		'}'
+	].join( '\n' ),
+	'errors': [
+		{
+			'message': 'Displayed return value is `12.0`, but expected `9` instead',
+			'type': null
+		}
+	],
+	'output': [
+		'\'use strict\'',
+		'',
+		'/**',
+		'* Squares a number.',
+		'*',
+		'* @param {number} x - input value',
+		'* @returns {number} x*x',
+		'* @example',
+		'* var y = square( 3.0 ); // oh; interesting',
+		'* // returns 9',
+		'*/',
+		'function square( x ) {',
+		'  return x*x;',
+		'}'
+	].join( '\n' )
+};
+invalid.push( test );
+
 
 // EXPORTS //
 
diff --git a/lib/node_modules/@stdlib/_tools/eslint/rules/jsdoc-doctest/test/fixtures/valid.js b/lib/node_modules/@stdlib/_tools/eslint/rules/jsdoc-doctest/test/fixtures/valid.js
index 42708a20575b..670c8c8fc21d 100644
--- a/lib/node_modules/@stdlib/_tools/eslint/rules/jsdoc-doctest/test/fixtures/valid.js
+++ b/lib/node_modules/@stdlib/_tools/eslint/rules/jsdoc-doctest/test/fixtures/valid.js
@@ -1551,6 +1551,48 @@ test = {
 };
 valid.push( test );
 
+test = {
+	'code': [
+		'/**',
+		'* Squares a number.',
+		'*',
+		'* @param {number} x - input value',
+		'* @returns {number} x*x',
+		'* @example',
+		'* var y = square( 3.0 ); // x squared',
+		'* // returns 9.0',
+		'*',
+		'* y = square( 2.0 ); // x squared',
+		'* // returns 4.0',
+		'*/',
+		'function square( x ) {',
+		'  return x*x;',
+		'}'
+	].join( '\n' )
+};
+valid.push( test );
+
+test = {
+	'code': [
+		'/**',
+		'* Squares a number.',
+		'*',
+		'* @param {number} x - input value',
+		'* @returns {number} x*x',
+		'* @example',
+		'* console.log( square( 3.0 ) ); // x squared',
+		'* // => 9.0',
+		'*',
+		'* console.log( square( 2.0 ) ); // x squared',
+		'* // => 4.0',
+		'*/',
+		'function square( x ) {',
+		'  return x*x;',
+		'}'
+	].join( '\n' )
+};
+valid.push( test );
+
 
 // EXPORTS //