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LibJS: Treat missing arg in Array.prototype.includes() as undefined
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2 changed files with 4 additions and 2 deletions
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@ -422,8 +422,8 @@ Value ArrayPrototype::includes(Interpreter& interpreter)
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if (!array)
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return {};
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i32 array_size = static_cast<i32>(array->elements().size());
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if (interpreter.argument_count() == 0 || array_size == 0)
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i32 array_size = array->elements().size();
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if (array_size == 0)
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return Value(false);
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i32 from_index = 0;
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@ -5,6 +5,8 @@ try {
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var array = ['hello', 'friends', 1, 2, false];
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assert([].includes() === false);
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assert([undefined].includes() === true);
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assert(array.includes('hello') === true);
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assert(array.includes(1) === true);
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assert(array.includes(1, -3) === true);
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