@sv-use/core/dist/get-battery/index.svelte.js

A collection of Svelte 5 utilities.

import { onDestroy } from 'svelte';
import { handleEventListener } from '../handle-event-listener/index.svelte.js';
import { noop } from '../__internal__/utils.svelte.js';
/**
 * Retrieves information about the battery.
 * @see https://svelte-librarian.github.io/sv-use/docs/core/get-battery
 */
export function getBattery(options = {}) {
    const { autoCleanup = true } = options;
    const events = ['chargingchange', 'chargingtimechange', 'dischargingtimechange', 'levelchange'];
    let battery;
    let cleanup = noop;
    const _isSupported = $derived.by(() => navigator && 'getBattery' in navigator);
    let _charging = $state(0);
    let _chargingTime = $state(0);
    let _dischargingTime = $state(0);
    let _level = $state(1);
    if (_isSupported) {
        navigator.getBattery().then((_battery) => {
            battery = _battery;
            updateBatteryInfo.call(battery);
            cleanup = handleEventListener(battery, events, updateBatteryInfo, {
                autoCleanup,
                passive: true
            });
        });
    }
    if (autoCleanup) {
        onDestroy(() => cleanup());
    }
    function updateBatteryInfo() {
        _charging = this.charging || 0;
        _chargingTime = this.chargingTime || 0;
        _dischargingTime = this.dischargingTime || 0;
        _level = this.level || 1;
    }
    return {
        get isSupported() {
            return _isSupported;
        },
        get charging() {
            return _charging;
        },
        get chargingTime() {
            return _chargingTime;
        },
        get dischargingTime() {
            return _dischargingTime;
        },
        get level() {
            return _level;
        },
        cleanup
    };
}