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export function defaults(target, ...sources) {
for (let source of sources) {
for (let k in source) {
if (!target?.hasOwnProperty?.(k)) {
target[k] = source[k]
}
}
for (let k of Object.getOwnPropertySymbols(source)) {
if (!target?.hasOwnProperty?.(k)) {
target[k] = source[k]
}
}
}
return target
}
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