file-system-access/lib/FileSystemWritableFileStream.js

File System Access API implementation (ponyfill) with pluggable storage adapters via IndexedDB, Cache API, in-memory etc.

import { WritableStream } from './web-streams-ponyfill.js';
const ws = globalThis.WritableStream || WritableStream;
export class FileSystemWritableFileStream extends ws {
    constructor(underlyingSink, strategy) {
        super(underlyingSink, strategy);
        /** @internal */
        this._closed = false;
        // Stupid Safari hack to extend native classes
        // https://bugs.webkit.org/show_bug.cgi?id=226201
        Object.setPrototypeOf(this, FileSystemWritableFileStream.prototype);
    }
    close() {
        this._closed = true;
        const w = this.getWriter();
        const p = w.close();
        w.releaseLock();
        return p;
        // return super.close ? super.close() : this.getWriter().close()
    }
    seek(position) {
        return this.write({ type: 'seek', position });
    }
    truncate(size) {
        return this.write({ type: 'truncate', size });
    }
    write(data) {
        if (this._closed) {
            return Promise.reject(new TypeError('Cannot write to a CLOSED writable stream'));
        }
        const writer = this.getWriter();
        const p = writer.write(data);
        writer.releaseLock();
        return p;
    }
}
Object.defineProperty(FileSystemWritableFileStream.prototype, Symbol.toStringTag, {
    value: 'FileSystemWritableFileStream',
    writable: false,
    enumerable: false,
    configurable: true
});
Object.defineProperties(FileSystemWritableFileStream.prototype, {
    close: { enumerable: true },
    seek: { enumerable: true },
    truncate: { enumerable: true },
    write: { enumerable: true }
});
export default FileSystemWritableFileStream;
//# sourceMappingURL=FileSystemWritableFileStream.js.map