@benev/slate/x/tools/deep/parts/freeze.js

frontend web stuff

import { is } from "../../is.js";
export function deepFreeze(item) {
    function recurse(x, parents) {
        if (!is.object(x) || parents.includes(x))
            return x;
        const newParents = [...parents, x];
        if (x instanceof Map)
            for (const arr of x.entries())
                for (const y of arr)
                    recurse(y, newParents);
        else if (x instanceof Set)
            for (const y of x)
                recurse(y, newParents);
        else if (Array.isArray(x))
            for (const y of x)
                recurse(y, newParents);
        else
            for (const y of Object.values(x))
                recurse(y, newParents);
        return Object.freeze(x);
    }
    return recurse(item, []);
}
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