Support TLA error in script

packages/babel-parser/src/parser/expression.js

@@ -534,11 +534,15 @@ export default class ExpressionParser extends LValParser {
 
     const expr = this.parseUpdate(node, update, refExpressionErrors);
 
+    const startsExpr = this.hasPlugin("v8intrinsic")
+      ? this.state.type.startsExpr
+      : this.state.type.startsExpr && !this.match(tt.modulo);
     if (
       isAwait &&
-      this.scope.inFunction &&
-      this.state.type.startsExpr &&
-      !this.isAmbiguousAwait()
+      startsExpr &&
+      !this.isAmbiguousAwait() &&
+      (this.scope.inFunction ||
+        (this.hasPlugin("topLevelAwait") && !this.inModule))
     ) {
       this.raise(startPos, Errors.AwaitNotInAsyncContext);
       return this.parseAwait(startPos, startLoc);

packages/babel-parser/test/fixtures/experimental/top-level-await/top-level-script/options.json

@@ -1,5 +1,4 @@
 {
   "plugins": ["topLevelAwait"],
-  "sourceType": "script",
-  "throws": "Unexpected token, expected \";\" (1:6)"
+  "sourceType": "script"
 }

packages/babel-parser/test/fixtures/experimental/top-level-await/top-level-script/output.json

@@ -0,0 +1,33 @@
+{
+  "type": "File",
+  "start":0,"end":8,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":8}},
+  "errors": [
+    "SyntaxError: 'await' is only allowed within async functions and at the top levels of modules (1:0)"
+  ],
+  "program": {
+    "type": "Program",
+    "start":0,"end":8,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":8}},
+    "sourceType": "script",
+    "interpreter": null,
+    "body": [
+      {
+        "type": "ExpressionStatement",
+        "start":0,"end":8,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":8}},
+        "expression": {
+          "type": "AwaitExpression",
+          "start":0,"end":7,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":7}},
+          "argument": {
+            "type": "NumericLiteral",
+            "start":6,"end":7,"loc":{"start":{"line":1,"column":6},"end":{"line":1,"column":7}},
+            "extra": {
+              "rawValue": 0,
+              "raw": "0"
+            },
+            "value": 0
+          }
+        }
+      }
+    ],
+    "directives": []
+  }
+}