Chrome Headless Runtime.evaluate not returning JSON objects.

[Brian Cardarella]

In headless API when using Runtime.evalue({returnByValue: true, expression: "{a: 1}"}) I get back: {"result" => {"description" => "1", "type" => "number", "value" => 1}}

I would have expected to get back the JSON literal instead of the internal value. Is something wrong with my expectations or how this is being executed?

[Brian Cardarella]

The websocket command being sent is: {"params":{"returnByValue":true,"expression":"{a:1}"},"method":"Runtime.evaluate","id":8}

[Eric Seckler]

Sounds like a bug, I'd also have expected the object, rather than 1.

Does this only happen in headless mode? Do you see the same problem when you connect a DevTools frontend to the target and use the JS console?

Also, please file a bug if the issue persists.

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[Sami Kyostila]

For the record this isn't a bug but a feature of JavaScript. Try adding parentheses around the expression.

- Sami

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