feat(std/node): add os Symbol.toPrimitive methods (#4073)

Node's os module exports a number of methods that evaluate to themselves
when coerced to a primitive.

I.e., `"" + os.arch` and `os.arch()` evaluate to the same string, and
now Deno's shims do too.

1 files changed, 11 insertions, 0 deletions

diff --git a/std/node/os_test.ts b/std/node/os_test.ts
index f825ae192..2ceff79a4 100644
--- a/std/node/os_test.ts
+++ b/std/node/os_test.ts
@@ -175,6 +175,17 @@ test({
 });
 
 test({
+  name: "Primitive coercion works as expected",
+  fn() {
+    assertEquals(`${os.arch}`, os.arch());
+    assertEquals(`${os.endianness}`, os.endianness());
+    assertEquals(`${os.homedir}`, os.homedir());
+    assertEquals(`${os.hostname}`, os.hostname());
+    assertEquals(`${os.platform}`, os.platform());
+  }
+});
+
+test({
   name: "APIs not yet implemented",
   fn() {
     assertThrows(