Try spawnSync again

backend/api.js

@@ -1,4 +1,4 @@
-import { spawn } from "child_process";
+import { spawn, spawnSync } from "child_process";
 import path from "path";
 import process from "process";
 
@@ -323,54 +323,67 @@ export class Session {
       }
       await this.writeCode(code);
       const termArgs = this.privilegedPty(cmdline);
-      const term = {
+      const result = spawnSync(termArgs[0], termArgs.slice(1), {
-        pty: spawn(termArgs[0], termArgs.slice(1)),
+        encoding: "utf-8",
-        live: true,
+      });
-      };
-      this.term = term;
 
-      this.term.pty.stdout.on("data", (data) => {
+      if (result.stderr) {
-        // Capture term in closure so that we don't keep sending output
+        this.send({
-        // from the old pty even after it's been killed (see ghci).
+          event: "serviceLog",
-        if (term.live) {
+          service: "pty",
-          const output = data.toString("utf8");
+          output: data.stderr,
+        });
+        return;
+      }
 
       this.send({
         event: "terminalOutput",
         expectedOutput,
-            output,
+        output: result.stdout,
-          });
-        }
-      });
-      this.term.pty.stderr.on("data", (data) => {
-        if (term.live) {
-          this.send({
-            event: "serviceLog",
-            service: "pty",
-            output: data.toString("utf8"),
-          });
-        }
-      });
-      this.term.pty.on("close", (code, signal) => {
-        if (term.live) {
-          this.send({
-            event: "serviceFailed",
-            service: "terminal",
-            error: `Exited with status ${signal || code}`,
-            expectedOutput,
-            code: signal || code,
-          });
-        }
-      });
-      this.term.pty.on("error", (err) => {
-        if (term.live) {
-          this.send({
-            event: "serviceFailed",
-            service: "terminal",
-            error: `${err}`,
-          });
-        }
       });
+
+      // this.term.pty.stdout.on("data", (data) => {
+      //   // Capture term in closure so that we don't keep sending output
+      //   // from the old pty even after it's been killed (see ghci).
+      //   if (term.live) {
+      //     const output = data.toString("utf8");
+
+      //     this.send({
+      //       event: "terminalOutput",
+      //       expectedOutput,
+      //       output,
+      //     });
+      //   }
+      // });
+      // this.term.pty.stderr.on("data", (data) => {
+      //   if (term.live) {
+      //     this.send({
+      //       event: "serviceLog",
+      //       service: "pty",
+      //       output: data.toString("utf8"),
+      //     });
+      //   }
+      // });
+      // this.term.pty.on("close", (code, signal) => {
+      //   if (term.live) {
+      //     this.send({
+      //       event: "serviceFailed",
+      //       service: "terminal",
+      //       error: `Exited with status ${signal || code}`,
+      //       expectedOutput,
+      //       code: signal || code,
+      //     });
+      //   }
+      // });
+      // this.term.pty.on("error", (err) => {
+      //   if (term.live) {
+      //     this.send({
+      //       event: "serviceFailed",
+      //       service: "terminal",
+      //       error: `${err}`,
+      //     });
+      //   }
+      // });
     } catch (err) {
       logError(err);
       this.sendError(err);

langs/elixir.yaml

@@ -17,6 +17,12 @@ install:
     unzip -d "${pkg}/opt/elixir-ls" elixir-ls.zip
     ln -s /opt/elixir-ls/language_server.sh "${pkg}/usr/local/bin/elixir-ls"
 
+repl: |
+  iex
+input: |
+  DELAY: 1
+  123 * 234
+
 main: "main.exs"
 template: |
   IO.puts("Hello, world!")
@@ -43,5 +49,3 @@ lsp:
 
 skip:
   - lsp
-  - repl
-  - runrepl