JSVision

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Language intelligence and LSP ​

InProcessLspSession and CodeEditorLspCoordinator expose protocol-shaped intelligence without granting network or process authority. The coordinator keeps requests revision-aware, bounded, cancellable, and projected into editor-owned presentation.

Focused usage ​

ts
import { createCodeEditorLspCoordinator, createInProcessLspSession } from '@jsvision/code-editor';

const session = createInProcessLspSession({ capabilities: { completion: true } });
const coordinator = createCodeEditorLspCoordinator({
  document,
  session,
  uri: 'file:///workspace/main.ts',
  languageId: 'typescript',
});

Completion, signature, and hover ​

Completion arrays, labels, documentation, snippets, signatures, and hover text all cross a trust boundary. Limit their size before presentation and discard responses for cancelled or stale requests.

Explore a highlighted profile formatter, request suggestions at profile., and inspect the real popup plus its bounded hover and signature evidence.

Diagnostics ​

Diagnostics need severity, range, and a terminal-safe message. Overlay placement must stay inside the current viewport and use non-color severity cues.

Find a realistic property mistake, reveal its editor marker, and read the safe explanation and suggested correction beside the source.

Symbols, definitions, formatting, and host navigation are independently available capabilities. Expose unavailable operations honestly; a service advertising completion does not imply that it can format or navigate.

Start an in-process service, reveal one deterministic local definition, and inspect content-free caret and service state.

Limits and practices ​

  • Validate protocol objects, ranges, array counts, and presentation text at the session boundary.
  • Cancel superseded work and check document revision before applying every result.
  • Keep source-bearing request data out of logs and observability snapshots.
  • Dispose coordinator and session together; no pending callback may update a released editor.