Add execPath function (#1743)

2 files changed, 11 insertions, 3 deletions

diff --git a/js/deno.ts b/js/deno.ts
index 45e16e52d..2e69a5bbd 100644
--- a/js/deno.ts
+++ b/js/deno.ts
@@ -1,7 +1,7 @@
 // Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
 
 // Public deno module.
-export { noColor, pid, env, exit, isTTY } from "./os";
+export { noColor, pid, env, exit, isTTY, execPath } from "./os";
 export { chdir, cwd } from "./dir";
 export {
   File,
diff --git a/js/os.ts b/js/os.ts
index bb9ecc99a..fbcb23a7f 100644
--- a/js/os.ts
+++ b/js/os.ts
@@ -12,11 +12,19 @@ export let pid: number;
 /** Reflects the NO_COLOR environment variable: https://no-color.org/ */
 export let noColor: boolean;
 
+/** Path to the current deno process's executable file. */
+export let execPath: string;
+
 /** @internal */
-export function setGlobals(pid_: number, noColor_: boolean): void {
+export function setGlobals(
+  pid_: number,
+  noColor_: boolean,
+  execPath_: string
+): void {
   assert(!pid);
   pid = pid_;
   noColor = noColor_;
+  execPath = execPath_;
 }
 
 interface CodeInfo {
@@ -190,7 +198,7 @@ export function start(source?: string): msg.StartRes {
 
   util.setLogDebug(startResMsg.debugFlag(), source);
 
-  setGlobals(startResMsg.pid(), startResMsg.noColor());
+  setGlobals(startResMsg.pid(), startResMsg.noColor(), startResMsg.execPath()!);
 
   return startResMsg;
 }