Node JS / V8 destructuring bug?

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The proper syntax to destructure an object to existing variables is

({x, y} = {x: 1, y: 2});

This allows {x, y} = {x: 1, y: 2} to be an expression. Otherwise {x, y} is interpreted as a block with comma operator, this results in Unexpected token = error.

It works without parentheses and a semicolon in console because it is treated as an expression there. This is efficiently same thing as

console.log({x, y} = {x: 1, y: 2});

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