Update: support optional chaining (#446)

* Update: support optional chaining * update eslint-visitor-keys
eslint · Jun 23, 2020 · 872645c · 872645c
1 parent 0cc7800
commit 872645c
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diff --git a/lib/token-translator.js b/lib/token-translator.js
@@ -125,6 +125,7 @@ TokenTranslator.prototype = {
                  type === tt.arrow || type === tt.jsxTagStart ||
                  type === tt.incDec || type === tt.starstar ||
                  type === tt.jsxTagEnd || type === tt.prefix ||
+                 type === tt.questionDot ||
                  (type.binop && !type.keyword) ||
                  type.isAssign) {
 

diff --git a/package.json b/package.json
@@ -18,9 +18,9 @@
   },
   "license": "BSD-2-Clause",
   "dependencies": {
-    "acorn": "^7.2.0",
+    "acorn": "^7.3.1",
     "acorn-jsx": "^5.2.0",
-    "eslint-visitor-keys": "^1.2.0"
+    "eslint-visitor-keys": "^1.3.0"
   },
   "devDependencies": {
     "browserify": "^16.5.0",

diff --git a/tests/fixtures/ecma-version/11/modules/import-meta/import-meta.result.js b/tests/fixtures/ecma-version/11/modules/import-meta/import-meta.result.js
@@ -153,7 +153,8 @@ module.exports = {
                             ],
                             "name": "url"
                         },
-                        "computed": false
+                        "computed": false,
+                        "optional": false
                     }
                 }
             ],

diff --git a/tests/fixtures/ecma-version/11/optional-chaining/async-qdot-call.result.js b/tests/fixtures/ecma-version/11/optional-chaining/async-qdot-call.result.js
@@ -0,0 +1,165 @@
+module.exports = {
+    "type": "Program",
+    "loc": {
+        "start": {
+            "line": 1,
+            "column": 0
+        },
+        "end": {
+            "line": 1,
+            "column": 9
+        }
+    },
+    "range": [
+        0,
+        9
+    ],
+    "body": [
+        {
+            "type": "ExpressionStatement",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 0
+                },
+                "end": {
+                    "line": 1,
+                    "column": 9
+                }
+            },
+            "range": [
+                0,
+                9
+            ],
+            "expression": {
+                "type": "ChainExpression",
+                "loc": {
+                    "start": {
+                        "line": 1,
+                        "column": 0
+                    },
+                    "end": {
+                        "line": 1,
+                        "column": 9
+                    }
+                },
+                "range": [
+                    0,
+                    9
+                ],
+                "expression": {
+                    "type": "CallExpression",
+                    "loc": {
+                        "start": {
+                            "line": 1,
+                            "column": 0
+                        },
+                        "end": {
+                            "line": 1,
+                            "column": 9
+                        }
+                    },
+                    "range": [
+                        0,
+                        9
+                    ],
+                    "callee": {
+                        "type": "Identifier",
+                        "loc": {
+                            "start": {
+                                "line": 1,
+                                "column": 0
+                            },
+                            "end": {
+                                "line": 1,
+                                "column": 5
+                            }
+                        },
+                        "range": [
+                            0,
+                            5
+                        ],
+                        "name": "async"
+                    },
+                    "arguments": [],
+                    "optional": true
+                }
+            }
+        }
+    ],
+    "sourceType": "script",
+    "tokens": [
+        {
+            "type": "Identifier",
+            "value": "async",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 0
+                },
+                "end": {
+                    "line": 1,
+                    "column": 5
+                }
+            },
+            "range": [
+                0,
+                5
+            ]
+        },
+        {
+            "type": "Punctuator",
+            "value": "?.",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 5
+                },
+                "end": {
+                    "line": 1,
+                    "column": 7
+                }
+            },
+            "range": [
+                5,
+                7
+            ]
+        },
+        {
+            "type": "Punctuator",
+            "value": "(",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 7
+                },
+                "end": {
+                    "line": 1,
+                    "column": 8
+                }
+            },
+            "range": [
+                7,
+                8
+            ]
+        },
+        {
+            "type": "Punctuator",
+            "value": ")",
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 8
+                },
+                "end": {
+                    "line": 1,
+                    "column": 9
+                }
+            },
+            "range": [
+                8,
+                9
+            ]
+        }
+    ]
+};
diff --git a/tests/fixtures/ecma-version/11/optional-chaining/async-qdot-call.src.js b/tests/fixtures/ecma-version/11/optional-chaining/async-qdot-call.src.js
@@ -0,0 +1 @@
+async?.()