Update api.md (#35486)

* Wording tweak

* Tweak wording

Co-authored-by: Patrick H. Lauke <redux@splintered.co.uk>
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Anton 2021-12-28 15:38:35 +03:00 committed by GitHub
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@ -15,8 +15,8 @@ The `$utilities` map contains all our utilities and is later merged with your cu
| Option | Type | Default&nbsp;value | Description |
| --- | --- | --- | --- |
| [`property`](#property) | **Required** | | Name of the property, this can be a string or an array of strings (e.g., horizontal paddings or margins). |
| [`values`](#values) | **Required** | | List of values, or a map if you don't want the class name to be the same as the value. If `null` is used as map key, it isn't compiled. |
| [`class`](#class) | Optional | null | Name of the generated class. If not provided and `property` is an array of strings, `class` will default to the first element of the `property` array. |
| [`values`](#values) | **Required** | | List of values, or a map if you don't want the class name to be the same as the value. If `null` is used as map key, `class` is not prepended to the class name. |
| [`class`](#class) | Optional | null | Name of the generated class. If not provided and `property` is an array of strings, `class` will default to the first element of the `property` array. If not provided and `property` is a string, the `values` keys are used for the `class` names. |
| [`css-var`](#css-variable-utilities) | Optional | `false` | Boolean to generate CSS variables instead of CSS rules. |
| [`local-vars`](#local-css-variables) | Optional | null | Map of local CSS variables to generate in addition to the CSS rules. |
| [`state`](#states) | Optional | null | List of pseudo-class variants (e.g., `:hover` or `:focus`) to generate. |
@ -134,6 +134,28 @@ Output:
.o-100 { opacity: 1 !important; }
```
If `class: null`, generates classes for each of the `values` keys:
```scss
$utilities: (
"visibility": (
property: visibility,
class: null,
values: (
visible: visible,
invisible: hidden,
)
)
);
```
Output:
```css
.visible { visibility: visible !important; }
.invisible { visibility: hidden !important; }
```
### CSS variable utilities
Set the `css-var` boolean option to `true` and the API will generate local CSS variables for the given selector instead of the usual `property: value` rules. Consider our `.text-opacity-*` utilities: