fix: detect unexpected ] in expression "[1,2][]"

fixes #256
EricSmekens · Jul 6, 2024 · 70b8ea6 · 70b8ea6
1 parent d0cf015
commit 70b8ea6
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diff --git a/src/jsep.js b/src/jsep.js
@@ -589,6 +589,9 @@ export class Jsep {
 					object: node,
 					property: this.gobbleExpression()
 				};
+				if (!node.property) {
+					this.throwError('Unexpected "' + this.char + '"');
+				}
 				this.gobbleSpaces();
 				ch = this.code;
 				if (ch !== Jsep.CBRACK_CODE) {

diff --git a/test/jsep.test.js b/test/jsep.test.js
@@ -39,6 +39,7 @@ import {testParser, testOpExpression, esprimaComparisonTest, resetJsepDefaults}
 			type: 'MemberExpression',
 			optional: true,
 		}, assert);
+		assert.throws(() => jsep('[1,2][]'), 'Unexpected "]"');
 	});
 
 	QUnit.test('Function Calls', function (assert) {