select.css

[data-scope="select"] {
    &[data-part="root"] {
        display: flex;
        flex-direction: column;
        gap: 8px;
    }

    &[data-part="label"] {
        width: 100%;
        text-align: center;
        text-transform: uppercase;
        color: var(--rq-theme--colour-fg-medium);
        /* TODO migrate to SCSS and use @extend from typography.scss */
        margin: 0;
        font-size: 0.75rem;
        font-family: var(--rq-core--typo-family-body);
        line-height: var(--rq-core--typo-line-height-body);
        letter-spacing: var(--rq-core--typo-letter-spacing-body);
        font-weight: 700;
    }

    &[data-part="trigger"] {
        display: flex;
        align-items: center;
        justify-content: center;
        padding-inline-start: 16px;
        gap: 4px;
        height: 32px;
        border-radius: 999px;
        border: 1.4px solid var(--rq-theme--colour-fg-medium);
        background-color: transparent;
        color: var(--rq-theme--colour-fg-strong);
        cursor: pointer;

        /* TODO migrate to SCSS and use @extend from typography.scss */
        margin: 0;
        font-size: 1rem;
        font-family: var(--rq-core--typo-family-body);
        line-height: var(--rq-core--typo-line-height-body);
        letter-spacing: var(--rq-core--typo-letter-spacing-body);
        font-weight: 500;

        [data-part="indicator"] {
            transition: transform 0.25s ease-in-out;

            &[data-state="open"] {
                transform: rotate(180deg);
            }
        }
    }

    &[data-part="positioner"] {
        [data-part="content"] {
            background-color: var(--rq-theme--colour-bg);
            border: 1.4px solid var(--rq-theme--colour-fg-medium);
            border-radius: 8px;
            padding: 4px;

            [data-part="item"] {
                display: flex;
                align-items: center;
                justify-content: start;
                gap: 8px;
                padding: 4px;
                border-radius: 4px;
                cursor: pointer;

                [data-disabled] {
                    opacity: var(--rq-semantic--opacity-disabled);
                    cursor: not-allowed;
                }

                &:not([data-disabled]):hover {
                    background-color: var(--rq-theme--colour-fg-light);
                }

                [data-part="item-text"] {
                    color: var(--rq-theme--colour-fg-strong);
                    /* TODO migrate to SCSS and use @extend from typography.scss */
                    font-size: 1rem;
                    font-family: var(--rq-core--typo-family-body);
                    line-height: var(--rq-core--typo-line-height-body);
                    letter-spacing: var(--rq-core--typo-letter-spacing-body);
                    font-weight: 500;
                }
            }
        }
    }
}

Select.tsx

import { Select as ArkSelect } from "@ark-ui/solid";
import { Index, Show } from "solid-js";
import { Portal } from "solid-js/web";

import { LocalThemeProvider, useLocalTheme } from "../../theme/LocalTheme.tsx";
import { Icon } from "../icon/Icon.tsx";

import "./select.css";

// type SelectProps<ItemType extends ArkSelect.CollectionItem> =
//     ArkSelect.RootProps<ItemType>;

type SelectProps = {
    /** The items to display in the select. */
    items: {
        value: string;
        label: string;
        disabled?: boolean;
    }[];

    /** The placeholder to display in the select. */
    placeholder?: string;

    /** The label to display in the select. */
    label?: string;

    /** The default value to display in the select. */
    defaultValue?: string[];
} & (
    | { placeholder: string; defaultValue?: never }
    | { placeholder?: never; defaultValue: string[] }
);
/**
 * A select component, which allows the user to select items from a list.
 *
 * data-scope:  "select"
 *
 * @example
 * ```tsx
 * <Select items={[{ value: "react", label: "React" }, { value: "vue", label: "Vue", disabled: true }]} />
 * ```
 */
export function Select(props: SelectProps) {
    //TODO add other parts (clear trigger, item groups...)
    return (
        <ArkSelect.Root
            positioning={{ sameWidth: true }}
            items={props.items}
            data-scope="select"
            defaultValue={props.defaultValue}
        >
            <Show when={props.label}>
                <ArkSelect.Label>{props.label}</ArkSelect.Label>
            </Show>
            <ArkSelect.Control>
                <ArkSelect.Trigger>
                    <ArkSelect.ValueText placeholder={props.placeholder} />
                    <ArkSelect.Indicator>
                        <Icon
                            name="arrow_drop_down"
                            size={new CSSUnitValue(32, "px")}
                        />
                    </ArkSelect.Indicator>
                </ArkSelect.Trigger>
            </ArkSelect.Control>
            <Portal>
                <ArkSelect.Positioner>
                    <ArkSelect.Content>
                        <Index each={props.items}>
                            {(item) => (
                                <ArkSelect.Item item={item()}>
                                    <ArkSelect.ItemText>
                                        {item().label}
                                    </ArkSelect.ItemText>
                                    <ArkSelect.ItemIndicator>
                                        <Icon
                                            name="check"
                                            size={
                                                new CSSUnitValue(20, "px")
                                            }
                                        />
                                    </ArkSelect.ItemIndicator>
                                </ArkSelect.Item>
                            )}
                        </Index>
                    </ArkSelect.Content>
                </ArkSelect.Positioner>
            </Portal>
            <ArkSelect.HiddenSelect />
        </ArkSelect.Root>
    );
}