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Mini Shell
Mini Shell
import _extends from "@babel/runtime/helpers/esm/extends";
export function isPlainObject(item) {
return item !== null && typeof item === 'object' && item.constructor === Object;
}
function deepClone(source) {
if (!isPlainObject(source)) {
return source;
}
const output = {};
Object.keys(source).forEach(key => {
output[key] = deepClone(source[key]);
});
return output;
}
export default function deepmerge(target, source, options = {
clone: true
}) {
const output = options.clone ? _extends({}, target) : target;
if (isPlainObject(target) && isPlainObject(source)) {
Object.keys(source).forEach(key => {
// Avoid prototype pollution
if (key === '__proto__') {
return;
}
if (isPlainObject(source[key]) && key in target && isPlainObject(target[key])) {
// Since `output` is a clone of `target` and we have narrowed `target` in this block we can cast to the same type.
output[key] = deepmerge(target[key], source[key], options);
} else if (options.clone) {
output[key] = isPlainObject(source[key]) ? deepClone(source[key]) : source[key];
} else {
output[key] = source[key];
}
});
}
return output;
}
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