125 lines
2.2 KiB
Markdown
125 lines
2.2 KiB
Markdown
[@theatre/dataverse](../README.md) / Prism
|
|
|
|
# Interface: Prism<V\>
|
|
|
|
Common interface for prisms.
|
|
|
|
## Type parameters
|
|
|
|
| Name |
|
|
| :------ |
|
|
| `V` |
|
|
|
|
## Table of contents
|
|
|
|
### Properties
|
|
|
|
- [isHot](Prism-1.md#ishot)
|
|
- [isPrism](Prism-1.md#isprism)
|
|
|
|
### Methods
|
|
|
|
- [getValue](Prism-1.md#getvalue)
|
|
- [keepHot](Prism-1.md#keephot)
|
|
- [onChange](Prism-1.md#onchange)
|
|
- [onStale](Prism-1.md#onstale)
|
|
|
|
## Properties
|
|
|
|
### isHot
|
|
|
|
• **isHot**: `boolean`
|
|
|
|
Whether the prism is hot.
|
|
|
|
#### Defined in
|
|
|
|
[prism/Interface.ts:18](https://github.com/theatre-js/theatre/blob/327b859ed/packages/dataverse/src/prism/Interface.ts#L18)
|
|
|
|
___
|
|
|
|
### isPrism
|
|
|
|
• **isPrism**: ``true``
|
|
|
|
Whether the object is a prism.
|
|
|
|
#### Defined in
|
|
|
|
[prism/Interface.ts:13](https://github.com/theatre-js/theatre/blob/327b859ed/packages/dataverse/src/prism/Interface.ts#L13)
|
|
|
|
## Methods
|
|
|
|
### getValue
|
|
|
|
▸ **getValue**(): `V`
|
|
|
|
Gets the current value of the prism. If the value is stale, it causes the prism to freshen.
|
|
|
|
#### Returns
|
|
|
|
`V`
|
|
|
|
#### Defined in
|
|
|
|
[prism/Interface.ts:60](https://github.com/theatre-js/theatre/blob/327b859ed/packages/dataverse/src/prism/Interface.ts#L60)
|
|
|
|
___
|
|
|
|
### keepHot
|
|
|
|
▸ **keepHot**(): `VoidFn`
|
|
|
|
Keep the prism hot, even if there are no tappers (subscribers).
|
|
|
|
#### Returns
|
|
|
|
`VoidFn`
|
|
|
|
#### Defined in
|
|
|
|
[prism/Interface.ts:34](https://github.com/theatre-js/theatre/blob/327b859ed/packages/dataverse/src/prism/Interface.ts#L34)
|
|
|
|
___
|
|
|
|
### onChange
|
|
|
|
▸ **onChange**(`ticker`, `listener`, `immediate?`): `VoidFn`
|
|
|
|
Calls `listener` with a fresh value every time the prism _has_ a new value, throttled by Ticker.
|
|
|
|
#### Parameters
|
|
|
|
| Name | Type |
|
|
| :------ | :------ |
|
|
| `ticker` | [`Ticker`](../classes/Ticker.md) |
|
|
| `listener` | (`v`: `V`) => `void` |
|
|
| `immediate?` | `boolean` |
|
|
|
|
#### Returns
|
|
|
|
`VoidFn`
|
|
|
|
#### Defined in
|
|
|
|
[prism/Interface.ts:23](https://github.com/theatre-js/theatre/blob/327b859ed/packages/dataverse/src/prism/Interface.ts#L23)
|
|
|
|
___
|
|
|
|
### onStale
|
|
|
|
▸ **onStale**(`cb`): `VoidFn`
|
|
|
|
#### Parameters
|
|
|
|
| Name | Type |
|
|
| :------ | :------ |
|
|
| `cb` | () => `void` |
|
|
|
|
#### Returns
|
|
|
|
`VoidFn`
|
|
|
|
#### Defined in
|
|
|
|
[prism/Interface.ts:29](https://github.com/theatre-js/theatre/blob/327b859ed/packages/dataverse/src/prism/Interface.ts#L29)
|