Safe Haskell | None |
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Documentation
The JavaScript FFI interfacing monad.
Contains allowed foreign function types.
Foreign Bool | Bools are OK. |
Foreign Char | Characters are OK. |
Foreign Double | All numbers in JS are double. |
Foreign Int | Some numbers in JS are int. |
Foreign () | Unit is OK. |
Foreign a => Foreign [a] | Lists → arrays are OK. |
Foreign a => Foreign (Maybe a) | Maybes are pretty common. |
Foreign a => Foreign (Fay a) | JS values are foreignable. |
Foreign a => Foreign (Defined a) | |
Foreign a => Foreign (Nullable a) | |
(Foreign a, Foreign b) => Foreign (a -> b) | Functions are foreignable. |
(Foreign a, Foreign b) => Foreign (a, b) | Tuples → arrays are OK. |
(Foreign a, Foreign b, Foreign c) => Foreign (a, b, c) | |
(Foreign a, Foreign b, Foreign c, Foreign d) => Foreign (a, b, c, d) | |
(Foreign a, Foreign b, Foreign c, Foreign d, Foreign e) => Foreign (a, b, c, d, e) | |
(Foreign a, Foreign b, Foreign c, Foreign d, Foreign e, Foreign f) => Foreign (a, b, c, d, e, f) | |
(Foreign a, Foreign b, Foreign c, Foreign d, Foreign e, Foreign f, Foreign g) => Foreign (a, b, c, d, e, f, g) |
Values that may be null Nullable x decodes to x, Null decodes to null.
Values that may be undefined Defined x encodes to x, Undefined decodes to undefined. An undefined property in a record will be removed when encoding.