From f03fae03e54b150b368bc02ca4e2f5753f34671d Mon Sep 17 00:00:00 2001
From: Dax Raad <d@ironbay.co>
Date: Mon, 11 Aug 2025 21:36:05 -0400
Subject: [PATCH] switch back to didUpdate instead of closing and opening file

---
 packages/opencode/src/cli/cmd/debug/lsp.ts |  4 +++
 packages/opencode/src/lsp/client.ts        | 29 ++++++++++++++--------
 2 files changed, 22 insertions(+), 11 deletions(-)

diff --git a/packages/opencode/src/cli/cmd/debug/lsp.ts b/packages/opencode/src/cli/cmd/debug/lsp.ts
index ac1bac7c..91b13df4 100644
--- a/packages/opencode/src/cli/cmd/debug/lsp.ts
+++ b/packages/opencode/src/cli/cmd/debug/lsp.ts
@@ -2,6 +2,7 @@ import { LSP } from "../../../lsp"
 import { bootstrap } from "../../bootstrap"
 import { cmd } from "../cmd"
 import { Log } from "../../../util/log"
+import { appendFile } from "fs/promises"
 
 export const LSPCommand = cmd({
   command: "lsp",
@@ -17,6 +18,9 @@ const DiagnosticsCommand = cmd({
     await bootstrap({ cwd: process.cwd() }, async () => {
       await LSP.touchFile(args.file, true)
       console.log(await LSP.diagnostics())
+      await appendFile(args.file, `\nconst x: number = "foo"`)
+      await LSP.touchFile(args.file, true)
+      console.log(await LSP.diagnostics())
     })
   },
 })
diff --git a/packages/opencode/src/lsp/client.ts b/packages/opencode/src/lsp/client.ts
index c63e0259..509e982e 100644
--- a/packages/opencode/src/lsp/client.ts
+++ b/packages/opencode/src/lsp/client.ts
@@ -126,19 +126,26 @@ export namespace LSPClient {
           input.path = path.isAbsolute(input.path) ? input.path : path.resolve(app.path.cwd, input.path)
           const file = Bun.file(input.path)
           const text = await file.text()
-          const version = files[input.path]
-          if (version !== undefined) {
-            diagnostics.delete(input.path)
-            await connection.sendNotification("textDocument/didClose", {
-              textDocument: {
-                uri: `file://` + input.path,
-              },
-            })
-          }
-          log.info("textDocument/didOpen", input)
-          diagnostics.delete(input.path)
           const extension = path.extname(input.path)
           const languageId = LANGUAGE_EXTENSIONS[extension] ?? "plaintext"
+
+          const version = files[input.path]
+          if (version !== undefined) {
+            const next = version + 1
+            files[input.path] = next
+            log.info("textDocument/didChange", { path: input.path, version: next })
+            await connection.sendNotification("textDocument/didChange", {
+              textDocument: {
+                uri: `file://` + input.path,
+                version: next,
+              },
+              contentChanges: [{ text }],
+            })
+            return
+          }
+
+          log.info("textDocument/didOpen", input)
+          diagnostics.delete(input.path)
           await connection.sendNotification("textDocument/didOpen", {
             textDocument: {
               uri: `file://` + input.path,