add string prototype toString (not inherited from object)

rollup · Dec 19, 2021 · 659a1ae · 659a1ae
1 parent 06207b5
commit 659a1ae
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diff --git a/src/ast/values.ts b/src/ast/values.ts
@@ -199,6 +199,7 @@ const literalStringMembers: MemberDescriptions = assembleMemberDescriptions(
 		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,

diff --git a/test/form/samples/builtin-prototypes/literal/main.js b/test/form/samples/builtin-prototypes/literal/main.js
@@ -57,6 +57,7 @@ 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();