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| _References and Visibility_ |
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| # Emit Values |
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| By default all top-level fields are emitted when evaluating a configuration. |
| CUE files may define a top-level value that is emitted instead. |
| <!-- jba: |
| It's unclear how they do that. Is it the first form in the file? |
| And this is not in the spec AFAICT. |
| --> |
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| Values within the emit value may refer to fields defined outside of it. |
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| Emit values allow CUE configurations, like JSON, |
| to define any type, instead of just structs, while keeping the common case |
| of defining structs light. |
| |
| <!-- CUE editor --> |
| ``` |
| { |
| a: A |
| b: B |
| } |
| |
| A: 1 |
| B: 2 |
| ``` |
| |
| <!-- result --> |
| ``` |
| a: 1 |
| b: 2 |
| ``` |
