kandi X-RAY | tryflow Summary
kandi X-RAY | tryflow Summary
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tryflow Examples and Code Snippets
Trending Discussions on tryflow
I'm trying to create a custom error that extends
Error with correct flowtypes
Example of what I'm trying to do:...
ANSWERAnswered 2019-Nov-15 at 01:30
You need to declare that those propertied exist before you assign to them, e.g.
So in this basic example (tryflow):...
ANSWERAnswered 2018-Apr-10 at 16:34
You need to generically type your baseID function so Flow knows what you expect as argument and return type. It seems like Flow doesn't use the type of IndentityFunction when trying to figure out what the baseId function is really doing.
ANSWERAnswered 2018-Mar-19 at 22:20
They are checked when you try and create a component, i.e:
I'm trying to annotate a custom event emitter and restrict the event names to specific strings. For this example though I'll just use one event name:...
ANSWERAnswered 2018-Jan-31 at 05:33
on function is overriding
Foos, the type of
foo in the subclass's method needs to be a subtype of the corresponding type in the superclass's method. While
'bar' is a
string are not
For example, these will compile fine:
I've been trying to work out how to annotate this.
One way I tried was to annotate rest args as a union of various possible tuples:...
ANSWERAnswered 2017-May-03 at 06:50
Of the three possible workouts you gave, I've figured out how to make it work using an single options object, however because you require at least one object to be set, you need to define each possibility.
I am having a hard time describing the type of a function argument which is either a success or an error api response. Here is a simple puzzling example of the problem (reproduced in TryFlow at this address)
The function can take either a success response object or an error response object:...
ANSWERAnswered 2017-Sep-27 at 12:51
To access a member that is not common to all types in a union, you have to give flow a way to see which type it's dealing with. I understand that you're trying to use the truthiness of
error to determine the specific type, but flow does not understand this.
The pattern flow uses for this situation is called "disjoint unions". It is described here: https://flow.org/en/docs/types/unions/
I'm not an expert on flow, but it seems one solution would be to modify your type definition for
SuccessResponse as follows:
We're trying to do type refinement in Flow to guard against values entering our application at the external interfaces. To do this we're using
mixed and then trying to refine to known types, but Flow isn't make it easy!
The following seems like it should work, I've validated that the
mixed type value matches the requirements of the
ANSWERAnswered 2017-Jul-24 at 11:28
That would be unsafe. If something has type
string at runtime, it doesn't mean that it has the same static type, e.g. it could be some enum:
'Foo' | 'Bar', so making it just
string would allow unsafe mutations. On the other hand, it could be
number | string, so in the future
head could become a number or any type, really.
Instead you can do the following:
No vulnerabilities reported
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