ipfs-unixfs-importer/dist/src/flat-to-shard.js

JavaScript implementation of the UnixFs importer used by IPFS

import DirSharded from './dir-sharded.js';
import { DirFlat } from './dir-flat.js';
export async function flatToShard(child, dir, threshold, options) {
    let newDir = dir;
    if (dir instanceof DirFlat && dir.estimateNodeSize() > threshold) {
        newDir = await convertToShard(dir, options);
    }
    const parent = newDir.parent;
    if (parent != null) {
        if (newDir !== dir) {
            if (child != null) {
                child.parent = newDir;
            }
            if (newDir.parentKey == null) {
                throw new Error('No parent key found');
            }
            await parent.put(newDir.parentKey, newDir);
        }
        return await flatToShard(newDir, parent, threshold, options);
    }
    // @ts-expect-error
    return newDir;
}
async function convertToShard(oldDir, options) {
    const newDir = new DirSharded({
        root: oldDir.root,
        dir: true,
        parent: oldDir.parent,
        parentKey: oldDir.parentKey,
        path: oldDir.path,
        dirty: oldDir.dirty,
        flat: false,
        mtime: oldDir.mtime,
        mode: oldDir.mode
    }, options);
    for await (const { key, child } of oldDir.eachChildSeries()) {
        await newDir.put(key, child);
    }
    return newDir;
}
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