Add `console.assert` (#102)

1 files changed, 7 insertions, 0 deletions

diff --git a/globals.ts b/globals.ts
index ed60bc46a..b8944b4be 100644
--- a/globals.ts
+++ b/globals.ts
@@ -32,6 +32,13 @@ _global["console"] = {
   // tslint:disable-next-line:no-any
   error(...args: any[]): void {
     print("ERROR: " + stringifyArgs(args));
+  },
+
+  // tslint:disable-next-line:no-any
+  assert(condition: boolean, ...args: any[]): void {
+    if (!condition) {
+      throw new Error("Assertion failed: " + stringifyArgs(args));
+    }
   }
 };