| // Copyright 2020 Salesforce.com, Inc. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| esid: prod-OptionalExpression |
| description: > |
| Productions for ?. Arguments |
| info: | |
| OptionalChain[Yield, Await]: |
| ?. Arguments |
| features: [optional-chaining] |
| ---*/ |
| |
| function fn(arg1, arg2, arg3 = 0) { |
| return arg1 + arg2 + arg3; |
| } |
| |
| assert.sameValue(fn?.(10, 20), 30, 'regular'); |
| assert.sameValue(String?.(42), '42', 'built-in'); |
| assert.sameValue(fn ?. (...[10, 20, 40]), 70, 'spread'); |
