@codegouvfr/react-dsfr/tools/structuredCloneButFunctions.js

French State Design System React integration library

/**
 * Functionally equivalent to structuredClone but
 * functions are not cloned but kept as is.
 * (as opposed to structuredClone that chokes if it encounters a function)
 */
export function structuredCloneButFunctions(o, replacer) {
    if (!(o instanceof Object)) {
        return o;
    }
    if (typeof o === "function") {
        return o;
    }
    if (o instanceof Array) {
        return o.map(o => structuredCloneButFunctions(o, replacer));
    }
    return Object.fromEntries(Object.entries(o).map(([key, value]) => [
        key,
        structuredCloneButFunctions(replacer === undefined ? value : replacer({ key, value }), replacer)
    ]));
}
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