stdio.js 928 B

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  1. import { JSONRPCMessageSchema } from '../types.js';
  2. /**
  3. * Buffers a continuous stdio stream into discrete JSON-RPC messages.
  4. */
  5. export class ReadBuffer {
  6. append(chunk) {
  7. this._buffer = this._buffer ? Buffer.concat([this._buffer, chunk]) : chunk;
  8. }
  9. readMessage() {
  10. if (!this._buffer) {
  11. return null;
  12. }
  13. const index = this._buffer.indexOf('\n');
  14. if (index === -1) {
  15. return null;
  16. }
  17. const line = this._buffer.toString('utf8', 0, index).replace(/\r$/, '');
  18. this._buffer = this._buffer.subarray(index + 1);
  19. return deserializeMessage(line);
  20. }
  21. clear() {
  22. this._buffer = undefined;
  23. }
  24. }
  25. export function deserializeMessage(line) {
  26. return JSONRPCMessageSchema.parse(JSON.parse(line));
  27. }
  28. export function serializeMessage(message) {
  29. return JSON.stringify(message) + '\n';
  30. }
  31. //# sourceMappingURL=stdio.js.map