static from()

in src/HttpResponseStream.js [16:30]

• 9 lines of code
• 1 McCabe index (conditional complexity)

  static from(underlyingStream, prelude) {
    underlyingStream.setContentType(METADATA_PRELUDE_CONTENT_TYPE);

    // JSON.stringify is required. NULL byte is not allowed in metadataPrelude.
    const metadataPrelude = JSON.stringify(prelude);

    underlyingStream._onBeforeFirstWrite = (write) => {
      write(metadataPrelude);

      // Write 8 null bytes after the JSON prelude.
      write(new Uint8Array(DELIMITER_LEN));
    };

    return underlyingStream;
  }