WIP

node_modules/n3/src/N3StreamWriter.js

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+// **N3StreamWriter** serializes a quad stream into a text stream.
+import { Transform } from 'readable-stream';
+import N3Writer from './N3Writer';
+
+// ## Constructor
+export default class N3StreamWriter extends Transform {
+  constructor(options) {
+    super({ encoding: 'utf8', writableObjectMode: true });
+
+    // Set up writer with a dummy stream object
+    const writer = this._writer = new N3Writer({
+      write: (quad, encoding, callback) => { this.push(quad); callback && callback(); },
+      end: callback => { this.push(null); callback && callback(); },
+    }, options);
+
+    // Implement Transform methods on top of writer
+    this._transform = (quad, encoding, done) => { writer.addQuad(quad, done); };
+    this._flush = done => { writer.end(done); };
+  }
+
+// ### Serializes a stream of quads
+  import(stream) {
+    stream.on('data',   quad => { this.write(quad); });
+    stream.on('end',    () => { this.end(); });
+    stream.on('error',  error => { this.emit('error', error); });
+    stream.on('prefix', (prefix, iri) => { this._writer.addPrefix(prefix, iri); });
+    return this;
+  }
+}