@bookbox/core/build/esm/utils/iterable.js

Bookbox — e-book format

export function iterableTreeGetter(options) {
    const { getChildren, isLeaf } = options;
    return function* iterableTree(schema) {
        for (const item of schema) {
            yield item;
            if (isLeaf(item))
                continue;
            yield* iterableTree(getChildren(item));
        }
    };
}