diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2829569..ec6e41b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,6 +10,44 @@ permissions:
   contents: read
 
 jobs:
+  runtime-compat:
+    name: build and test (${{ matrix.runtime == 'bun' && 'Bun' || format('Node {0}', matrix.runtime) }})
+    runs-on: ubuntu-24.04
+    continue-on-error: ${{ matrix.runtime != 'bun' }}
+    strategy:
+      fail-fast: false
+      matrix:
+        runtime:
+          - "22"
+          - "24"
+          - "26"
+          - bun
+    steps:
+      - name: Checkout
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+      - name: Setup Node
+        if: matrix.runtime != 'bun'
+        uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
+        with:
+          node-version: ${{ matrix.runtime }}
+          package-manager-cache: false
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@0c5077e51419868618aeaa5fe8019c62421857d6 # v2.2.0
+        with:
+          bun-version: 1.4.2
+      - name: Install dependencies
+        run: bun install --frozen-lockfile
+      - name: Build and test with Bun
+        if: matrix.runtime == 'bun'
+        run: |
+          bun run build
+          bun run test
+      - name: Build and test with Node
+        if: matrix.runtime != 'bun'
+        run: node scripts/run-node-compat.mjs
+
   check:
     name: ${{ matrix.task }}
     runs-on: ubuntu-24.04
diff --git a/packages/opencode-force-input/vitest.config.ts b/packages/opencode-force-input/vitest.config.ts
index cf94cb1..ef8aa32 100644
--- a/packages/opencode-force-input/vitest.config.ts
+++ b/packages/opencode-force-input/vitest.config.ts
@@ -3,6 +3,9 @@ import { fileURLToPath } from "node:url";
 import solid from "vite-plugin-solid";
 import { defineConfig } from "vitest/config";
 
+const runtimeConditions =
+  process.env.NODE_COMPAT === "true" ? undefined : ["bun"];
+
 export default defineConfig({
   plugins: [
     solid({
@@ -15,12 +18,12 @@ export default defineConfig({
     alias: {
       "@": fileURLToPath(new URL("src", import.meta.url)),
     },
-    conditions: ["bun"],
+    conditions: runtimeConditions,
     dedupe: ["solid-js"],
   },
   ssr: {
     resolve: {
-      conditions: ["bun"],
+      conditions: runtimeConditions,
     },
   },
   test: {
diff --git a/packages/opencode-usage-limits/vitest.config.ts b/packages/opencode-usage-limits/vitest.config.ts
index eecb65d..19506a0 100644
--- a/packages/opencode-usage-limits/vitest.config.ts
+++ b/packages/opencode-usage-limits/vitest.config.ts
@@ -3,6 +3,9 @@ import { fileURLToPath } from "node:url";
 import solid from "vite-plugin-solid";
 import { defineConfig } from "vitest/config";
 
+const runtimeConditions =
+  process.env.NODE_COMPAT === "true" ? undefined : ["bun"];
+
 export default defineConfig({
   plugins: [
     solid({
@@ -15,12 +18,12 @@ export default defineConfig({
     alias: {
       "@": fileURLToPath(new URL("src", import.meta.url)),
     },
-    conditions: ["bun"],
+    conditions: runtimeConditions,
     dedupe: ["solid-js"],
   },
   ssr: {
     resolve: {
-      conditions: ["bun"],
+      conditions: runtimeConditions,
     },
   },
   test: {
diff --git a/scripts/run-node-compat.mjs b/scripts/run-node-compat.mjs
new file mode 100644
index 0000000..59f629d
--- /dev/null
+++ b/scripts/run-node-compat.mjs
@@ -0,0 +1,141 @@
+import { spawnSync } from "node:child_process";
+import { existsSync, readdirSync, readFileSync } from "node:fs";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+
+const rootDirectory = fileURLToPath(new URL("../", import.meta.url));
+const nodeModulesDirectory = "node_modules";
+const packageManifestFile = "package.json";
+const packageDirectories = ["packages", "apps"]
+  .flatMap((parent) => {
+    const parentPath = path.join(rootDirectory, parent);
+    return readdirSync(parentPath, { withFileTypes: true })
+      .filter(
+        (entry) =>
+          entry.isDirectory() &&
+          readdirSync(path.join(parentPath, entry.name)).includes(
+            packageManifestFile
+          )
+      )
+      .map((entry) => path.join(parent, entry.name));
+  })
+  .toSorted();
+
+let hasFailedTask = false;
+const run = (command, args, cwd = rootDirectory) => {
+  const result = spawnSync(command, args, {
+    cwd,
+    stdio: "inherit",
+  });
+  if (result.error) {
+    throw result.error;
+  }
+  if (result.status !== 0) {
+    hasFailedTask = true;
+  }
+};
+
+const vitestCli = path.join(rootDirectory, "node_modules/vitest/vitest.mjs");
+const coverageScript = path.join(rootDirectory, "scripts/check-coverage.ts");
+const runPackageCli = (script, packagePath) => {
+  if (/[\n\r"'`;&|<>]/u.test(script)) {
+    throw new Error(`Unsupported shell syntax in package script: ${script}`);
+  }
+  const [command, ...args] = script.split(/\s+/u);
+  const manifestPath = [
+    path.join(packagePath, nodeModulesDirectory, command, packageManifestFile),
+    path.join(
+      rootDirectory,
+      nodeModulesDirectory,
+      command,
+      packageManifestFile
+    ),
+  ].find(existsSync);
+  if (!manifestPath) {
+    throw new Error(`Could not resolve package manifest for ${command}.`);
+  }
+  const cliManifest = JSON.parse(readFileSync(manifestPath, "utf-8"));
+  const bin = cliManifest.bin?.[command] ?? cliManifest.bin;
+  if (!bin) {
+    throw new Error(`Could not resolve executable for ${command}.`);
+  }
+  run(
+    process.execPath,
+    [path.resolve(path.dirname(manifestPath), bin), ...args],
+    packagePath
+  );
+};
+
+for (const packageDirectory of packageDirectories) {
+  const packagePath = path.join(rootDirectory, packageDirectory);
+  const manifest = JSON.parse(
+    readFileSync(path.join(packagePath, packageManifestFile), "utf-8")
+  );
+  if (manifest.scripts?.build) {
+    console.log(`\n==> ${packageDirectory} build (Node)`);
+    runPackageCli(manifest.scripts.build, packagePath);
+  }
+  if (manifest.scripts?.test) {
+    console.log(`\n==> ${packageDirectory} test (Node)`);
+    if (existsSync(path.join(packagePath, "vitest.config.ts"))) {
+      const coverageThreshold = manifest.scripts.test.match(
+        /check-coverage\.ts\s+coverage\/lcov\.info\s+(?<threshold>\S+)/u
+      )?.groups?.threshold;
+      if (!coverageThreshold) {
+        throw new Error(
+          `Could not resolve coverage threshold for ${packageDirectory}.`
+        );
+      }
+      const result = spawnSync(
+        process.execPath,
+        [
+          vitestCli,
+          "run",
+          "--coverage",
+          "--config",
+          path.join(packagePath, "vitest.config.ts"),
+        ],
+        {
+          cwd: packagePath,
+          env: { ...process.env, NODE_COMPAT: "true" },
+          stdio: "inherit",
+        }
+      );
+      if (result.error) {
+        throw result.error;
+      }
+      if (result.status === 0) {
+        run(
+          "bun",
+          [
+            coverageScript,
+            path.join(packagePath, "coverage/lcov.info"),
+            coverageThreshold,
+          ],
+          packagePath
+        );
+      } else {
+        hasFailedTask = true;
+      }
+    } else {
+      runPackageCli(manifest.scripts.test, packagePath);
+    }
+  }
+}
+
+console.log("\n==> scripts/__tests__ (Node)");
+const rootTestResult = spawnSync(
+  process.execPath,
+  [vitestCli, "run", "scripts/__tests__"],
+  { cwd: rootDirectory, stdio: "inherit" }
+);
+if (rootTestResult.error) {
+  throw rootTestResult.error;
+}
+if (rootTestResult.status !== 0) {
+  hasFailedTask = true;
+}
+
+if (hasFailedTask) {
+  process.exitCode = 1;
+}