diff --git a/src/ast/values.ts b/src/ast/values.ts
index 08bf62f4cde..cd3e753c8b4 100644
--- a/src/ast/values.ts
+++ b/src/ast/values.ts
@@ -163,16 +163,28 @@ const literalNumberMembers: MemberDescriptions = assembleMemberDescriptions(
 
 const literalStringMembers: MemberDescriptions = assembleMemberDescriptions(
 	{
+		anchor: returnsString,
+
+		at: returnsUnknown,
+		big: returnsString,
+		blink: returnsString,
+		bold: returnsString,
 		charAt: returnsString,
 		charCodeAt: returnsNumber,
-		codePointAt: returnsNumber,
+		codePointAt: returnsUnknown,
 		concat: returnsString,
 		endsWith: returnsBoolean,
+		fixed: returnsString,
+		fontcolor: returnsString,
+		fontsize: returnsString,
 		includes: returnsBoolean,
 		indexOf: returnsNumber,
+		italics: returnsString,
 		lastIndexOf: returnsNumber,
+		link: returnsString,
 		localeCompare: returnsNumber,
-		match: returnsBoolean,
+		match: returnsUnknown,
+		matchAll: returnsUnknown,
 		normalize: returnsString,
 		padEnd: returnsString,
 		padStart: returnsString,
@@ -183,17 +195,32 @@ const literalStringMembers: MemberDescriptions = assembleMemberDescriptions(
 				returns: UNKNOWN_LITERAL_STRING
 			}
 		},
+		replaceAll: {
+			value: {
+				callsArgs: [1],
+				returns: UNKNOWN_LITERAL_STRING
+			}
+		},
 		search: returnsNumber,
 		slice: returnsString,
+		small: returnsString,
 		split: returnsUnknown,
 		startsWith: returnsBoolean,
+		strike: returnsString,
+		sub: returnsString,
 		substr: returnsString,
 		substring: returnsString,
+		sup: returnsString,
 		toLocaleLowerCase: returnsString,
 		toLocaleUpperCase: returnsString,
 		toLowerCase: returnsString,
+		toString: returnsString, // overrides the toString() method of the Object object; it does not inherit Object.prototype.toString()
 		toUpperCase: returnsString,
 		trim: returnsString,
+		trimEnd: returnsString,
+		trimLeft: returnsString,
+		trimRight: returnsString,
+		trimStart: returnsString,
 		valueOf: returnsString
 	},
 	objectMembers
diff --git a/test/form/samples/builtin-prototypes/literal/_expected.js b/test/form/samples/builtin-prototypes/literal/_expected.js
index 75d80d652e5..52445d752cd 100644
--- a/test/form/samples/builtin-prototypes/literal/_expected.js
+++ b/test/form/samples/builtin-prototypes/literal/_expected.js
@@ -9,6 +9,7 @@ true.valueOf()();
 'ab'.charAt(1)();
 null.unknown;
 'ab'.replace( 'a', () => console.log( 1 ) || 'b' );
+'ab'.replaceAll( 'a', () => console.log( 1 ) || 'b' );
 
 // deep property access is forbidden
 true.x.y;
diff --git a/test/form/samples/builtin-prototypes/literal/main.js b/test/form/samples/builtin-prototypes/literal/main.js
index e91c6a56144..4e8e734a7ce 100644
--- a/test/form/samples/builtin-prototypes/literal/main.js
+++ b/test/form/samples/builtin-prototypes/literal/main.js
@@ -29,34 +29,59 @@ const _numberToLocaleString = (1).toLocaleString().trim();
 const _numberToString = (1).toString().trim();
 
 // string prototype
+const _at = 'ab'.at( 1 )
 const _charAt = 'ab'.charAt( 1 ).trim();
 const _charCodeAt = 'ab'.charCodeAt( 1 ).toExponential( 2 );
-const _codePointAt = 'ab'.codePointAt( 1 ).toExponential( 2 );
+const _codePointAt = 'ab'.codePointAt( 1 );
 const _concat = 'ab'.concat( 'c' ).trim();
 const _includes = 'ab'.includes( 'a' ).valueOf();
 const _endsWith = 'ab'.endsWith( 'a' ).valueOf();
 const _indexOf = 'ab'.indexOf( 'a' ).toExponential( 2 );
 const _lastIndexOf = 'ab'.lastIndexOf( 'a' ).toExponential( 2 );
 const _localeCompare = 'ab'.localeCompare( 'a' ).toExponential( 2 );
-const _match = 'ab'.match( /a/ ).valueOf();
+const _match = 'ab'.match( /a/ )
+const _matchAll = 'ab'.matchAll( /a/ )
 const _normalize = 'ab'.normalize().trim();
 const _padEnd = 'ab'.padEnd( 4, 'a' ).trim();
 const _padStart = 'ab'.padStart( 4, 'a' ).trim();
 const _repeat = 'ab'.repeat( 2 ).trim();
 const _replace = 'ab'.replace( 'a', () => 'b' ).trim();
 const _replaceEffect = 'ab'.replace( 'a', () => console.log( 1 ) || 'b' );
+const _replaceAll = 'ab'.replaceAll( 'a', () => 'b' ).trim();
+const _replaceAllEffect = 'ab'.replaceAll( 'a', () => console.log( 1 ) || 'b' );
 const _search = 'ab'.search( /a/ ).toExponential( 2 );
 const _slice = 'ab'.slice( 0, 1 ).trim();
 const _split = 'ab'.split( 'a' );
 const _startsWith = 'ab'.startsWith( 'a' ).valueOf();
-const _substr = 'ab'.substr( 0, 1 ).trim();
 const _substring = 'ab'.substring( 0, 1 ).trim();
 const _toLocaleLowerCase = 'ab'.toLocaleLowerCase().trim();
 const _toLocaleUpperCase = 'ab'.toLocaleUpperCase().trim();
 const _toLowerCase = 'ab'.toLowerCase().trim();
+const _toString = 'ab'.trim();
 const _toUpperCase = 'ab'.toUpperCase().trim();
 const _trim = 'ab'.trim().trim();
+const _trimEnd = 'ab'.trimEnd().trim();
+const _trimStart = 'ab'.trimStart().trim();
 const _stringValueOf = 'ab'.valueOf().trim();
+
+// DEPRECATED prototype methods
+const _anchor = 'ab'.anchor().trim();
+const _big = 'ab'.big().trim();
+const _blink = 'ab'.blink().trim();
+const _bold = 'ab'.bold().trim();
+const _fixed = 'ab'.fixed().trim();
+const _fontcolor = 'ab'.fontcolor().trim();
+const _fontsize = 'ab'.fontsize().trim();
+const _italics = 'ab'.italics().trim();
+const _link = 'ab'.link().trim();
+const _small = 'ab'.small().trim();
+const _strike = 'ab'.strike().trim();
+const _sub = 'ab'.sub().trim();
+const _substr = 'ab'.substr(0, 1).trim();
+const _sup = 'ab'.sup().trim();
+const _trimLeft = 'ab'.trimLeft().trim();
+const _trimRight = 'ab'.trimRight().trim();
+
 // inherited
 const _stringHasOwnProperty = 'ab'.hasOwnProperty( 'toString' ).valueOf();
 const _stringIsPrototypeOf = 'ab'.isPrototypeOf( '' ).valueOf();