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wip: test + typing for value

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This commit is contained in:
Evan You
2019-05-29 22:11:33 +08:00
parent ef4fde3522
commit dde6c151e4
4 changed files with 117 additions and 13 deletions
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56
packages/observer/src/value.ts
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@@ -9,6 +9,62 @@ export interface Value<T> {
value: T
}
type UnwrapValue<T, U = T> = T extends Value<infer V> ? V : T extends {} ? U : T
// A utility type that recursively unwraps value bindings nested inside an
// observable object. Unfortunately TS cannot do recursive types, but this
// should be enough for practical use cases...
export type UnwrapBindings<T> = {
[key in keyof T]: UnwrapValue<
T[key],
{
[k2 in keyof T[key]]: UnwrapValue<
T[key][k2],
{
[k3 in keyof T[key][k2]]: UnwrapValue<
T[key][k2][k3],
{
[k4 in keyof T[key][k2][k3]]: UnwrapValue<
T[key][k2][k3][k4],
{
[k5 in keyof T[key][k2][k3][k4]]: UnwrapValue<
T[key][k2][k3][k4][k5],
{
[k6 in keyof T[key][k2][k3][k4][k5]]: UnwrapValue<
T[key][k2][k3][k4][k5][k6],
{
[k7 in keyof T[key][k2][k3][k4][k5][k6]]: UnwrapValue<
T[key][k2][k3][k4][k5][k6][k7],
{
[k8 in keyof T[key][k2][k3][k4][k5][k6][k7]]: UnwrapValue<
T[key][k2][k3][k4][k5][k6][k7][k8],
{
[k9 in keyof T[key][k2][k3][k4][k5][k6][k7][k8]]: UnwrapValue<
T[key][k2][k3][k4][k5][k6][k7][k8][k9],
{
[k10 in keyof T[key][k2][k3][k4][k5][k6][k7][k8][k9]]: UnwrapValue<
T[key][k2][k3][k4][k5][k6][k7][k8][k9][k10]
>
}
>
}
>
}
>
}
>
}
>
}
>
}
>
}
>
}
>
}
const convert = (val: any): any => (isObject(val) ? observable(val) : val)
export function value<T>(raw: T): Value<T> {