@zazuko/rdf-utils-fs/toFile.js

RDF/JS file system utils

import { createWriteStream } from 'fs';
import { extname } from 'path';
import { promisify } from 'util';
import url from 'url';
import { finished } from 'readable-stream';
import config from './defaults.js';
export default function toFile(env, stream, pathOrUrl, { extensions = config.extensions, ...options } = {}) {
    const filename = typeof pathOrUrl === 'string' ? pathOrUrl : url.fileURLToPath(pathOrUrl);
    const extension = extname(filename).split('.').pop();
    const mediaType = extensions[extension];
    if (!mediaType) {
        throw new Error(`Unknown file extension: ${extension}`);
    }
    // eslint-disable-next-line @typescript-eslint/no-explicit-any
    const serializer = env.formats.serializers.get(mediaType);
    if (!serializer) {
        throw new Error(`No serializer available for media type: ${mediaType}`);
    }
    const output = createWriteStream(filename);
    serializer.import(stream, options).pipe(output);
    return promisify(finished)(output);
}