Recognized optional chaining operator as Punctuator token

babel · Jun 14, 2018 · e15ce52 · e15ce52
1 parent c31567e
commit e15ce52
Show file tree

Hide file tree

Showing 2 changed files with 11 additions and 0 deletions.
diff --git a/lib/babylon-to-espree/toToken.js b/lib/babylon-to-espree/toToken.js
@@ -23,6 +23,7 @@ module.exports = function(token, tt, source) {
     type === tt.incDec ||
     type === tt.colon ||
     type === tt.question ||
+    type === tt.questionDot ||
     type === tt.template ||
     type === tt.backQuote ||
     type === tt.dollarBraceL ||

diff --git a/test/babel-eslint.js b/test/babel-eslint.js
@@ -256,6 +256,16 @@ describe("babylon-to-espree", () => {
     parseAndAssertSame("export { foo as bar };");
   });
 
+  // Espree doesn't support the optional chaining operator yet
+  it("optional chaining operator (token)", () => {
+    const code = "foo?.bar";
+    var babylonAST = babelEslint.parseForESLint(code, {
+      eslintVisitorKeys: true,
+      eslintScopeManager: true,
+    }).ast;
+    assert.strictEqual(babylonAST.tokens[1].type, "Punctuator");
+  });
+
   // Espree doesn't support the nullish coalescing operator yet
   it("nullish coalescing operator (token)", () => {
     const code = "foo ?? bar";