import type { EgalOptions, OutputFormat } from '@nvl/egal';
import type { Declaration, Helpers } from 'postcss';
export type Transformer = (decl: Declaration, helpers: Helpers, pluginOptions: PluginOptions) => void;
/**
 * The options for the plugin.
 *
 * This interface extends the {@link EgalOptions | `EgalOptions`} interface from
 * the `@nvl/egal` package. This is to allow the user to set custom defaults for
 * the `egal` function, such as the color space to use.
 *
 * Other than that, there are some options that are specific to the plugin,
 * namely `properties` and `checkVariables`.
 */
export interface PluginOptions extends EgalOptions<OutputFormat> {
    /**
     * CSS properties to check for `egal` colors. If not provided, the plugin
     * will check for
     * {@link cssColorProperties | all CSS properties that are known to accept colors}.
     * This is useful if you want to limit the plugin to only certain
     * properties.
     */
    properties?: string[];
    /**
     * Whether to check CSS variable declarations (e.g.,
     * `--my-color: egal(12% 34% 56);`) for `egal` colors.
     *
     * @defaultValue
     * ```ts
     * true
     * ```
     */
    checkVariables?: boolean;
}