3 files changed, 19 insertions, 1 deletions
diff --git a/cli/main.rs b/cli/main.rs
index 682d1055f..948f8544e 100644
--- a/cli/main.rs
+++ b/cli/main.rs
@@ -398,6 +398,12 @@ fn run_script(flags: DenoFlags, argv: Vec<String>) {
   }
 }
 
+fn version_command() {
+  println!("deno: {}", version::DENO);
+  println!("v8: {}", version::v8());
+  println!("typescript: {}", version::typescript());
+}
+
 fn main() {
   #[cfg(windows)]
   ansi_term::enable_ansi_support().ok(); // For Windows 10
@@ -425,7 +431,7 @@ fn main() {
     DenoSubcommand::Repl => run_repl(flags, argv),
     DenoSubcommand::Run => run_script(flags, argv),
     DenoSubcommand::Types => types_command(),
-    DenoSubcommand::Version => run_repl(flags, argv),
+    DenoSubcommand::Version => version_command(),
     DenoSubcommand::Xeval => xeval_command(flags, argv),
   }
 }
diff --git a/cli/ops/os.rs b/cli/ops/os.rs
index afb87539f..d644d893b 100644
--- a/cli/ops/os.rs
+++ b/cli/ops/os.rs
@@ -28,6 +28,7 @@ pub fn op_start(
     "versionFlag": state.flags.version,
     "v8Version": version::v8(),
     "denoVersion": version::DENO,
+    "tsVersion": version::typescript(),
     "noColor": !ansi::use_color(),
     "xevalDelim": state.flags.xeval_delim.clone(),
   })))
diff --git a/cli/version.rs b/cli/version.rs
index 4b9509af9..2c98a96d4 100644
--- a/cli/version.rs
+++ b/cli/version.rs
@@ -1,6 +1,17 @@
 // Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+use serde_json;
 pub const DENO: &str = env!("CARGO_PKG_VERSION");
 
 pub fn v8() -> &'static str {
   deno::v8_version()
 }
+
+pub fn typescript() -> String {
+  // TODO: By using include_str! we are including the package.json into
+  // the deno binary using serde to decode it at runtime. This is suboptimal
+  // in space and time. We need to extract the TypeScript version at compile
+  // time instead. This will be easier after #2608.
+  let data = include_str!("../node_modules/typescript/package.json");
+  let pkg: serde_json::Value = serde_json::from_str(data).unwrap();
+  pkg["version"].as_str().unwrap().to_string()
+}