added typescript support via SWC

Author: mishushakov

template/.ts.swcrc

@@ -0,0 +1,15 @@
+{
+  "$schema": "https://swc.rs/schema.json",
+  "jsc": {
+    "parser": {
+      "syntax": "typescript"
+    }
+  },
+  "module": {
+    "type": "commonjs"
+  },
+  "env": {
+    "targets": "node 22"
+  },
+  "isModule": false
+}

template/Dockerfile

@@ -1,7 +1,11 @@
 FROM python:3.10.14
 
 RUN DEBIAN_FRONTEND=noninteractive apt-get update && apt-get install -y --no-install-recommends \
-  build-essential curl git util-linux jq sudo nodejs npm fonts-noto-cjk
+  build-essential curl git util-linux jq sudo fonts-noto-cjk
+
+# Install Node.js 20.x from NodeSource
+RUN curl -fsSL https://deb.nodesource.com/setup_20.x | bash - && \
+    apt-get install -y nodejs
 
 ENV PIP_DEFAULT_TIMEOUT=100 \
   PIP_DISABLE_PIP_VERSION_CHECK=1 \
@@ -24,10 +28,13 @@ RUN R -e "install.packages('IRkernel', repos='https://cloud.r-project.org')"
 RUN R -e "IRkernel::installspec(user = FALSE, name = 'r', displayname = 'R')"
 
 # Javascript Kernel
-RUN npm install -g node-gyp
 RUN npm install -g --unsafe-perm ijavascript
 RUN ijsinstall --install=global
 
+## TypeScript support
+RUN npm install -g @swc/cli @swc/core
+COPY .ts.swcrc /root/.ts.swcrc
+
 # Deno Kernel
 COPY --from=denoland/deno:bin-2.0.4 /deno /usr/bin/deno
 RUN chmod +x /usr/bin/deno

template/server/contexts.py

@@ -11,6 +11,11 @@
 
 logger = logging.Logger(__name__)
 
+def get_kernel_for_language(language: str) -> str:
+    if language == "typescript":
+        return "javascript"
+
+    return language
 
 def normalize_language(language: Optional[str]) -> str:
     if not language:
@@ -21,13 +26,16 @@ def normalize_language(language: Optional[str]) -> str:
     if language == "js":
         return "javascript"
 
+    if language == "ts":
+        return "typescript"
+
     return language
 
 
 async def create_context(client, websockets: dict, language: str, cwd: str) -> Context:
     data = {
         "path": str(uuid.uuid4()),
-        "kernel": {"name": language},
+        "kernel": {"name": get_kernel_for_language(language)},
         "type": "notebook",
         "name": str(uuid.uuid4()),
     }

template/server/messaging.py

@@ -3,6 +3,7 @@
 import logging
 import uuid
 import asyncio
+import subprocess
 
 from asyncio import Queue
 from envs import get_envs
@@ -27,6 +28,7 @@
 
 logger = logging.getLogger(__name__)
 
+compile_typescript_cmd = "/usr/lib/node_modules/@swc/cli/bin/swc.js --config-file /root/.ts.swcrc --filename index.ts"
 
 class Execution:
     def __init__(self, in_background: bool = False):
@@ -199,6 +201,23 @@ async def execute(
                         + code
                     )
 
+            if self.language == "typescript":
+                logger.info("Compiling TypeScript: %s", code)
+
+                # call swc to compile the typescript code
+                compile_result = subprocess.run(compile_typescript_cmd.split(), input=code.encode(), capture_output=True)
+
+                if compile_result.returncode != 0:
+                    logger.error("Error during TypeScript compilation: %s", compile_result.stderr.decode())
+                    yield Error(
+                        name="TypeScriptCompilerError",
+                        value=compile_result.stderr.decode(),
+                        traceback="",
+                    )
+                    return
+
+                code = compile_result.stdout.decode()
+
             logger.info(code)
             request = self._get_execute_request(message_id, code, False)
 

template/test.Dockerfile

@@ -5,7 +5,11 @@ COPY --from=eclipse-temurin:11-jdk $JAVA_HOME $JAVA_HOME
 ENV PATH="${JAVA_HOME}/bin:${PATH}"
 
 RUN DEBIAN_FRONTEND=noninteractive apt-get update && apt-get install -y --no-install-recommends \
-  build-essential curl git util-linux jq sudo nodejs npm fonts-noto-cjk
+  build-essential curl git util-linux jq sudo fonts-noto-cjk
+
+# Install Node.js 20.x from NodeSource
+RUN curl -fsSL https://deb.nodesource.com/setup_20.x | bash - && \
+    apt-get install -y nodejs
 
 ENV PIP_DEFAULT_TIMEOUT=100 \
   PIP_DISABLE_PIP_VERSION_CHECK=1 \
@@ -19,10 +23,13 @@ COPY ./template/requirements.txt requirements.txt
 RUN pip install --no-cache-dir -r requirements.txt && ipython kernel install --name "python3" --user
 
 # Javascript Kernel
-RUN npm install -g node-gyp
 RUN npm install -g --unsafe-perm ijavascript
 RUN ijsinstall --install=global
 
+## TypeScript support
+RUN npm install -g @swc/cli @swc/core
+COPY ./template/.ts.swcrc /root/.ts.swcrc
+
 # Deno Kernel
 COPY --from=denoland/deno:bin-2.0.4 /deno /usr/bin/deno
 RUN chmod +x /usr/bin/deno