fix: module is not a reserved JS keyword

packages/babel-parser/src/parser/statement.ts

@@ -2652,7 +2652,30 @@ export default abstract class StatementParser extends ExpressionParser {
   }
 
   parseMaybeImportReflection(node: Undone<N.ImportDeclaration>) {
-    if (this.match(tt._module)) {
+    let isImportReflection = false;
+    if (this.match(tt._module) && !this.state.containsEsc) {
+      const lookahead = this.lookahead();
+      if (tokenIsIdentifier(lookahead.type)) {
+        if (lookahead.type !== tt._from) {
+          // import module x
+          isImportReflection = true;
+        } else {
+          const nextNextTokenFirstChar = this.input.charCodeAt(
+            this.nextTokenStartSince(lookahead.end),
+          );
+          if (nextNextTokenFirstChar === charCodes.lowercaseF) {
+            // import module from from ...
+            isImportReflection = true;
+          }
+        }
+      } else {
+        // import module { x } ...
+        // This is invalid, we will continue parsing and throw
+        // recoverable errors later
+        isImportReflection = true;
+      }
+    }
+    if (isImportReflection) {
       this.expectPlugin("importReflection");
       this.next(); // eat tt._module;
       node.module = true;

packages/babel-parser/test/fixtures/experimental/import-reflection/invalid-module-escape/input.mjs

@@ -0,0 +1 @@
+import modul\u0065 foo from "./module.wasm";

packages/babel-parser/test/fixtures/experimental/import-reflection/invalid-module-escape/options.json

@@ -0,0 +1,3 @@
+{
+  "throws": "Unexpected token, expected \"from\" (1:19)"
+}

packages/babel-parser/test/fixtures/experimental/import-reflection/valid-from-as-default-module-binding-escaped/input.mjs

@@ -0,0 +1 @@
+import module \u0066rom from "./module.wasm";

packages/babel-parser/test/fixtures/experimental/import-reflection/valid-from-as-default-module-binding-escaped/output.json

@@ -0,0 +1,38 @@
+{
+  "type": "File",
+  "start":0,"end":45,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":45,"index":45}},
+  "program": {
+    "type": "Program",
+    "start":0,"end":45,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":45,"index":45}},
+    "sourceType": "module",
+    "interpreter": null,
+    "body": [
+      {
+        "type": "ImportDeclaration",
+        "start":0,"end":45,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":45,"index":45}},
+        "specifiers": [
+          {
+            "type": "ImportDefaultSpecifier",
+            "start":14,"end":23,"loc":{"start":{"line":1,"column":14,"index":14},"end":{"line":1,"column":23,"index":23}},
+            "local": {
+              "type": "Identifier",
+              "start":14,"end":23,"loc":{"start":{"line":1,"column":14,"index":14},"end":{"line":1,"column":23,"index":23},"identifierName":"from"},
+              "name": "from"
+            }
+          }
+        ],
+        "module": true,
+        "source": {
+          "type": "StringLiteral",
+          "start":29,"end":44,"loc":{"start":{"line":1,"column":29,"index":29},"end":{"line":1,"column":44,"index":44}},
+          "extra": {
+            "rawValue": "./module.wasm",
+            "raw": "\"./module.wasm\""
+          },
+          "value": "./module.wasm"
+        }
+      }
+    ],
+    "directives": []
+  }
+}

packages/babel-parser/test/fixtures/experimental/import-reflection/valid-from-as-default-module-binding/input.mjs

@@ -0,0 +1 @@
+import module from from "./module.wasm";

packages/babel-parser/test/fixtures/experimental/import-reflection/valid-from-as-default-module-binding/output.json

@@ -0,0 +1,38 @@
+{
+  "type": "File",
+  "start":0,"end":40,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":40,"index":40}},
+  "program": {
+    "type": "Program",
+    "start":0,"end":40,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":40,"index":40}},
+    "sourceType": "module",
+    "interpreter": null,
+    "body": [
+      {
+        "type": "ImportDeclaration",
+        "start":0,"end":40,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":40,"index":40}},
+        "specifiers": [
+          {
+            "type": "ImportDefaultSpecifier",
+            "start":14,"end":18,"loc":{"start":{"line":1,"column":14,"index":14},"end":{"line":1,"column":18,"index":18}},
+            "local": {
+              "type": "Identifier",
+              "start":14,"end":18,"loc":{"start":{"line":1,"column":14,"index":14},"end":{"line":1,"column":18,"index":18},"identifierName":"from"},
+              "name": "from"
+            }
+          }
+        ],
+        "module": true,
+        "source": {
+          "type": "StringLiteral",
+          "start":24,"end":39,"loc":{"start":{"line":1,"column":24,"index":24},"end":{"line":1,"column":39,"index":39}},
+          "extra": {
+            "rawValue": "./module.wasm",
+            "raw": "\"./module.wasm\""
+          },
+          "value": "./module.wasm"
+        }
+      }
+    ],
+    "directives": []
+  }
+}

packages/babel-parser/test/fixtures/experimental/import-reflection/valid-module-as-default-binding/input.mjs

@@ -0,0 +1 @@
+import module from "./module.wasm";

packages/babel-parser/test/fixtures/experimental/import-reflection/valid-module-as-default-binding/output.json

@@ -0,0 +1,38 @@
+{
+  "type": "File",
+  "start":0,"end":35,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":35,"index":35}},
+  "program": {
+    "type": "Program",
+    "start":0,"end":35,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":35,"index":35}},
+    "sourceType": "module",
+    "interpreter": null,
+    "body": [
+      {
+        "type": "ImportDeclaration",
+        "start":0,"end":35,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":35,"index":35}},
+        "specifiers": [
+          {
+            "type": "ImportDefaultSpecifier",
+            "start":7,"end":13,"loc":{"start":{"line":1,"column":7,"index":7},"end":{"line":1,"column":13,"index":13}},
+            "local": {
+              "type": "Identifier",
+              "start":7,"end":13,"loc":{"start":{"line":1,"column":7,"index":7},"end":{"line":1,"column":13,"index":13},"identifierName":"module"},
+              "name": "module"
+            }
+          }
+        ],
+        "module": false,
+        "source": {
+          "type": "StringLiteral",
+          "start":19,"end":34,"loc":{"start":{"line":1,"column":19,"index":19},"end":{"line":1,"column":34,"index":34}},
+          "extra": {
+            "rawValue": "./module.wasm",
+            "raw": "\"./module.wasm\""
+          },
+          "value": "./module.wasm"
+        }
+      }
+    ],
+    "directives": []
+  }
+}