@fluritheme/spider/dist/options.js

A tiny, expressive spider for your website. Delicate webs that follow DOM layers, blinking eyes, and playful pointer reactions.

export const defaults = {
    maxWebs: 6,
    spiders: 1,
    webSize: 112,
    size: 1,
    speed: 1,
    fearRadius: 110,
    color: 'auto',
    webOpacity: 0.4,
    zIndex: 100,
    motion: 'system',
    weave: true,
    observe: true,
    roam: true,
    entrance: 'silk',
    webDensity: 0.7,
    territory: 'page',
    objects: '[data-spider-object], [data-spider-web], article, aside, button, input, select, textarea, img, video, pre, .code-panel',
};
export function resolveOptions(input) {
    const result = { ...defaults, ...input };
    const bounds = {
        maxWebs: [1, 24],
        spiders: [1, 8],
        webSize: [40, 240],
        size: [0.5, 2],
        speed: [0.25, 3],
        fearRadius: [0, 300],
        webOpacity: [0, 1],
        webDensity: [0, 1],
        zIndex: [-2147483648, 2147483647],
    };
    for (const key of Object.keys(bounds)) {
        const value = result[key], [min, max] = bounds[key];
        if (typeof value !== 'number' || !Number.isFinite(value) || value < min || value > max)
            throw new RangeError(`Spider: ${key} must be between ${min} and ${max}.`);
    }
    for (const key of ['maxWebs', 'spiders', 'zIndex'])
        if (!Number.isInteger(result[key]))
            throw new TypeError(`Spider: ${key} must be an integer.`);
    if (!['system', 'full', 'none'].includes(result.motion))
        throw new TypeError('Spider: invalid motion setting.');
    if (typeof result.color !== 'string' || !result.color.trim())
        throw new TypeError('Spider: color must be a CSS color or auto.');
    if (!['silk', 'appear'].includes(result.entrance))
        throw new TypeError('Spider: invalid entrance.');
    if (!['page', 'root'].includes(result.territory))
        throw new TypeError('Spider: invalid territory.');
    if (typeof result.objects !== 'string')
        throw new TypeError('Spider: objects must be a selector.');
    for (const key of ['weave', 'observe', 'roam'])
        if (typeof result[key] !== 'boolean')
            throw new TypeError(`Spider: ${key} must be a boolean.`);
    return result;
}
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