36 lines
1.1 KiB
JavaScript
36 lines
1.1 KiB
JavaScript
function isObject(value) {
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return value !== null && typeof value === "object";
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}
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function _defu(baseObject, defaults, namespace = ".", merger) {
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if (!isObject(defaults)) {
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return _defu(baseObject, {}, namespace, merger);
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}
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const object = Object.assign({}, defaults);
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for (const key in baseObject) {
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if (key === "__proto__" || key === "constructor") {
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continue;
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}
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const value = baseObject[key];
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if (value === null || value === void 0) {
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continue;
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}
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if (merger && merger(object, key, value, namespace)) {
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continue;
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}
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if (Array.isArray(value) && Array.isArray(object[key])) {
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object[key] = [...value, ...object[key]];
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} else if (isObject(value) && isObject(object[key])) {
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object[key] = _defu(value, object[key], (namespace ? `${namespace}.` : "") + key.toString(), merger);
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} else {
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object[key] = value;
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}
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}
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return object;
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}
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function createDefu(merger) {
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return (...arguments_) => arguments_.reduce((p, c) => _defu(p, c, "", merger), {});
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}
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const defu = createDefu();
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export { defu as d };
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