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PR-URL: https://github.com/nodejs/node/pull/28918 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com>
34 lines
1.2 KiB
JavaScript
34 lines
1.2 KiB
JavaScript
// Copyright 2019 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax
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// Parameters can't have parentheses (both patterns and identifiers)
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assertThrows("( ({x: 1}) ) => {};", SyntaxError);
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assertThrows("( (x) ) => {}", SyntaxError);
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assertThrows("( ({x: 1}) = y ) => {}", SyntaxError);
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assertThrows("( (x) = y ) => {}", SyntaxError);
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// Declarations can't have parentheses (both patterns and identifiers)
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assertThrows("let [({x: 1})] = [];", SyntaxError);
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assertThrows("let [(x)] = [];", SyntaxError);
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assertThrows("let [({x: 1}) = y] = [];", SyntaxError);
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assertThrows("let [(x) = y] = [];", SyntaxError);
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assertThrows("var [({x: 1})] = [];", SyntaxError);
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assertThrows("var [(x)] = [];", SyntaxError);
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assertThrows("var [({x: 1}) = y] = [];", SyntaxError);
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assertThrows("var [(x) = y] = [];", SyntaxError);
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// Patterns can't have parentheses in assignments either
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assertThrows("[({x: 1}) = y] = [];", SyntaxError);
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assertThrows("({a,b}) = {a:2,b:3}", SyntaxError);
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// Parentheses are fine around identifiers in assignments though, even inside a
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// pattern
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var x;
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[(x)] = [2];
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assertEquals(x, 2);
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[(x) = 3] = [];
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assertEquals(x, 3);
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