fix(tui): share runtime with external TSX plugins

packages/tui/test/plugin-reactivity.test.tsx

@@ -0,0 +1,72 @@
+import { expect, test } from "bun:test"
+import { createComponent, createSignal, type JSX } from "solid-js"
+import { testRender } from "@opentui/solid"
+import { mkdir, writeFile } from "node:fs/promises"
+import path from "node:path"
+import { preparePlugin } from "../src/plugin/loader.bun"
+import "../src/plugin/runtime-plugin-support.bun"
+import { tmpdir } from "./fixture/fixture"
+
+test("an external TSX plugin uses the host Solid runtime", async () => {
+  await using tmp = await tmpdir()
+  const root = path.join(tmp.path, ".opencode")
+  const source = path.join(root, "plugins", "tui", "reactive.tsx")
+  const helper = path.join(root, "plugins", "tui", "signal.ts")
+  const localSolid = path.join(root, "node_modules", "solid-js")
+  const localOpenTui = path.join(root, "node_modules", "@opentui", "solid")
+  await Promise.all([
+    mkdir(path.dirname(source), { recursive: true }),
+    mkdir(localSolid, { recursive: true }),
+    mkdir(localOpenTui, { recursive: true }),
+  ])
+  await Promise.all([
+    writeFile(
+      path.join(localSolid, "package.json"),
+      JSON.stringify({ name: "solid-js", type: "module", main: "index.js" }),
+    ),
+    writeFile(
+      path.join(localSolid, "index.js"),
+      "export const createSignal = () => { throw new Error('local Solid used') }\n",
+    ),
+    writeFile(
+      path.join(localOpenTui, "package.json"),
+      JSON.stringify({ name: "@opentui/solid", type: "module", main: "index.js" }),
+    ),
+    writeFile(path.join(localOpenTui, "index.js"), "throw new Error('local OpenTUI used')\n"),
+    writeFile(helper, 'export { createSignal, onCleanup } from "solid-js"\n'),
+    writeFile(
+      source,
+      `
+import { createSignal, onCleanup } from "./signal"
+
+export const signal = createSignal
+
+export default {
+  id: "test.reactive",
+  setup(context: any) {
+    context.ui.slot("home.footer", () => {
+      const [count, setCount] = createSignal(0)
+      const timer = setTimeout(() => setCount(1), 10)
+      onCleanup(() => clearTimeout(timer))
+      return <box><text>count:{count()}</text></box>
+    })
+  },
+}
+`,
+    ),
+  ])
+
+  const plugin = await import(await preparePlugin(new URL(`file://${source}`).href, `${source}?mtime=1`, tmp.path))
+  expect(plugin.signal).toBe(createSignal)
+  let slot: ((input: object) => JSX.Element) | undefined
+  await plugin.default.setup({ ui: { slot: (_name: string, render: typeof slot) => (slot = render) } })
+  if (!slot) throw new Error("Plugin did not register its slot")
+
+  const setup = await testRender(() => createComponent(slot!, {}), { width: 20, height: 2 })
+  try {
+    expect(await setup.waitForFrame((frame) => frame.includes("count:0"))).toContain("count:0")
+    expect(await setup.waitForFrame((frame) => frame.includes("count:1"))).toContain("count:1")
+  } finally {
+    setup.renderer.destroy()
+  }
+})