@e280/quay/x/cellar/opfs-forklift.js

File-browser and outliner UI for the web

export class OpfsForklift {
    directory;
    static async setup(dirname) {
        const root = await navigator.storage.getDirectory();
        const directory = await root.getDirectoryHandle(dirname, { create: true });
        return new this(directory);
    }
    constructor(directory) {
        this.directory = directory;
    }
    async *list() {
        for await (const [name, handle] of this.directory.entries()) {
            if (handle.kind === "file")
                yield name;
        }
    }
    async has(label) {
        try {
            await this.directory.getFileHandle(label);
            return true;
        }
        catch (err) {
            if (err.name === "NotFoundError")
                return false;
            throw err;
        }
    }
    async save(label, bytes) {
        const fileHandle = await this.directory.getFileHandle(label, { create: true });
        const writable = await fileHandle.createWritable();
        await writable.write(bytes);
        await writable.close();
    }
    async load(label) {
        const fileHandle = await this.directory.getFileHandle(label);
        const file = await fileHandle.getFile();
        const buffer = await file.arrayBuffer();
        return new Uint8Array(buffer);
    }
    async delete(label) {
        await this.directory.removeEntry(label);
    }
}
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