cred: isolate scripts in WASI and move RSA signing to AWS-LC

host/cred-script/vendor/rquickjs-sys/quickjs/tests/detect_module/0.js

@@ -0,0 +1 @@
+await undefined

host/cred-script/vendor/rquickjs-sys/quickjs/tests/detect_module/1.js

@@ -0,0 +1,2 @@
+const p = Promise.resolve(42)
+await p

host/cred-script/vendor/rquickjs-sys/quickjs/tests/detect_module/2.js

@@ -0,0 +1 @@
+await = 42 // parsed as classic script

host/cred-script/vendor/rquickjs-sys/quickjs/tests/detect_module/3.js

@@ -0,0 +1,8 @@
+/*---
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+// the import statement makes it a module but `await = 42` is a SyntaxError
+import * as _ from "dummy"
+await = 42

host/cred-script/vendor/rquickjs-sys/quickjs/tests/detect_module/4.js

@@ -0,0 +1,3 @@
+// imports should classify it as a module, even when not at the top
+os.now()
+import * as os from "qjs:os"