feat(runtime): add op_set_exit_code (#12911)

Set the exit code to use if none is provided to Deno.exit(), or when
Deno exits naturally.

Needed for process.exitCode Node compat. Paves the way for #12888.

5 files changed, 24 insertions, 0 deletions

diff --git a/cli/tests/integration/run_tests.rs b/cli/tests/integration/run_tests.rs
index d6a5a4c25..47041e499 100644
--- a/cli/tests/integration/run_tests.rs
+++ b/cli/tests/integration/run_tests.rs
@@ -859,6 +859,24 @@ itest!(exit_error42 {
   output: "exit_error42.ts.out",
 });
 
+itest!(set_exit_code_0 {
+  args: "run --no-check --unstable set_exit_code_0.ts",
+  output: "empty.out",
+  exit_code: 0,
+});
+
+itest!(set_exit_code_1 {
+  args: "run --no-check --unstable set_exit_code_1.ts",
+  output: "empty.out",
+  exit_code: 42,
+});
+
+itest!(set_exit_code_2 {
+  args: "run --no-check --unstable set_exit_code_2.ts",
+  output: "empty.out",
+  exit_code: 42,
+});
+
 itest!(heapstats {
   args: "run --quiet --unstable --v8-flags=--expose-gc heapstats.js",
   output: "heapstats.js.out",
diff --git a/cli/tests/testdata/empty.out b/cli/tests/testdata/empty.out
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/cli/tests/testdata/empty.out
diff --git a/cli/tests/testdata/set_exit_code_0.ts b/cli/tests/testdata/set_exit_code_0.ts
new file mode 100644
index 000000000..7eb14fa3c
--- /dev/null
+++ b/cli/tests/testdata/set_exit_code_0.ts
@@ -0,0 +1,2 @@
+Deno.core.opSync("op_set_exit_code", 42);
+Deno.exit(0); // Takes precedence.
diff --git a/cli/tests/testdata/set_exit_code_1.ts b/cli/tests/testdata/set_exit_code_1.ts
new file mode 100644
index 000000000..96ec9889c
--- /dev/null
+++ b/cli/tests/testdata/set_exit_code_1.ts
@@ -0,0 +1,2 @@
+Deno.core.opSync("op_set_exit_code", 42);
+Deno.exit();
diff --git a/cli/tests/testdata/set_exit_code_2.ts b/cli/tests/testdata/set_exit_code_2.ts
new file mode 100644
index 000000000..a1f2b5d3c
--- /dev/null
+++ b/cli/tests/testdata/set_exit_code_2.ts
@@ -0,0 +1,2 @@
+Deno.core.opSync("op_set_exit_code", 42);
+// Exits naturally.