generic-filehandle2/esm/localFile.js

uniform interface for accessing binary data from local files, remote HTTP resources, and browser Blob data

import { open, readFile, stat } from 'fs/promises';
export default class LocalFile {
    constructor(source, _opts = {}) {
        this.filename = source;
    }
    async read(length, position = 0) {
        const arr = new Uint8Array(length);
        const fd = await open(this.filename, 'r');
        const res = await fd.read(arr, 0, length, position);
        await fd.close();
        return res.buffer.subarray(0, res.bytesRead);
    }
    async readFile(options) {
        const res = await readFile(this.filename, options);
        return typeof res === 'string' ? res : new Uint8Array(res);
    }
    async stat() {
        return stat(this.filename);
    }
    async close() {
        /* do nothing */
    }
}
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