Mark RestElement as assignable

nicolo-ribaudo · nicolo-ribaudo · commit 99f9a101e98d · 2020-10-15T16:24:04.000+02:00
diff --git a/packages/babel-parser/src/parser/lval.js b/packages/babel-parser/src/parser/lval.js
@@ -68,6 +68,7 @@ export default class LValParser extends NodeUtils {
       case "ObjectPattern":
       case "ArrayPattern":
       case "AssignmentPattern":
+      case "RestElement":
         return true;
 
       case "ObjectExpression": {
diff --git a/packages/babel-parser/test/fixtures/typescript/regression/rest-in-arrow/input.ts b/packages/babel-parser/test/fixtures/typescript/regression/rest-in-arrow/input.ts
@@ -0,0 +1 @@
+const f = (...args): void => {};
diff --git a/packages/babel-parser/test/fixtures/typescript/regression/rest-in-arrow/output.json b/packages/babel-parser/test/fixtures/typescript/regression/rest-in-arrow/output.json
@@ -0,0 +1,61 @@
+{
+  "type": "File",
+  "start":0,"end":32,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":32}},
+  "program": {
+    "type": "Program",
+    "start":0,"end":32,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":32}},
+    "sourceType": "module",
+    "interpreter": null,
+    "body": [
+      {
+        "type": "VariableDeclaration",
+        "start":0,"end":32,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":32}},
+        "declarations": [
+          {
+            "type": "VariableDeclarator",
+            "start":6,"end":31,"loc":{"start":{"line":1,"column":6},"end":{"line":1,"column":31}},
+            "id": {
+              "type": "Identifier",
+              "start":6,"end":7,"loc":{"start":{"line":1,"column":6},"end":{"line":1,"column":7},"identifierName":"f"},
+              "name": "f"
+            },
+            "init": {
+              "type": "ArrowFunctionExpression",
+              "start":10,"end":31,"loc":{"start":{"line":1,"column":10},"end":{"line":1,"column":31}},
+              "returnType": {
+                "type": "TSTypeAnnotation",
+                "start":19,"end":25,"loc":{"start":{"line":1,"column":19},"end":{"line":1,"column":25}},
+                "typeAnnotation": {
+                  "type": "TSVoidKeyword",
+                  "start":21,"end":25,"loc":{"start":{"line":1,"column":21},"end":{"line":1,"column":25}}
+                }
+              },
+              "id": null,
+              "generator": false,
+              "async": false,
+              "params": [
+                {
+                  "type": "RestElement",
+                  "start":11,"end":18,"loc":{"start":{"line":1,"column":11},"end":{"line":1,"column":18}},
+                  "argument": {
+                    "type": "Identifier",
+                    "start":14,"end":18,"loc":{"start":{"line":1,"column":14},"end":{"line":1,"column":18},"identifierName":"args"},
+                    "name": "args"
+                  }
+                }
+              ],
+              "body": {
+                "type": "BlockStatement",
+                "start":29,"end":31,"loc":{"start":{"line":1,"column":29},"end":{"line":1,"column":31}},
+                "body": [],
+                "directives": []
+              }
+            }
+          }
+        ],
+        "kind": "const"
+      }
+    ],
+    "directives": []
+  }
+}
