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) {
        if (length === 0) {
            return new Uint8Array(0);
        }
        const arr = new Uint8Array(length);
        let fd; // Declare fd outside the try block so it's accessible in finally
        try {
            fd = await open(this.filename, 'r');
            const res = await fd.read(arr, 0, length, position);
            return res.buffer.subarray(0, res.bytesRead);
        }
        finally {
            // This block will always execute, regardless of success or error
            if (fd) {
                // Only close if the fd was successfully opened
                await fd.close();
            }
        }
    }
    async readFile(options) {
        return readFile(this.filename, options);
    }
    async stat() {
        return stat(this.filename);
    }
    async close() {
        /* do nothing */
    }
}
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