if-decl-else-decl-a-func-init.js (1558B)
1 // This file was procedurally generated from the following sources: 2 // - src/annex-b-fns/func-init.case 3 // - src/annex-b-fns/func/if-decl-else-decl-a.template 4 /*--- 5 description: Variable binding is initialized to `undefined` in outer scope (IfStatement with a declaration in both statement positions in function scope) 6 esid: sec-functiondeclarations-in-ifstatement-statement-clauses 7 flags: [generated, noStrict] 8 info: | 9 The following rules for IfStatement augment those in 13.6: 10 11 IfStatement[Yield, Return]: 12 if ( Expression[In, ?Yield] ) FunctionDeclaration[?Yield] else Statement[?Yield, ?Return] 13 if ( Expression[In, ?Yield] ) Statement[?Yield, ?Return] else FunctionDeclaration[?Yield] 14 if ( Expression[In, ?Yield] ) FunctionDeclaration[?Yield] else FunctionDeclaration[?Yield] 15 if ( Expression[In, ?Yield] ) FunctionDeclaration[?Yield] 16 17 18 B.3.3.1 Changes to FunctionDeclarationInstantiation 19 20 [...] 21 2. If instantiatedVarNames does not contain F, then 22 a. Perform ! varEnvRec.CreateMutableBinding(F, false). 23 b. Perform varEnvRec.InitializeBinding(F, undefined). 24 c. Append F to instantiatedVarNames. 25 [...] 26 ---*/ 27 var init, changed; 28 29 (function() { 30 init = f; 31 f = 123; 32 changed = f; 33 34 if (true) function f() { } else function _f() {} 35 36 37 }()); 38 39 assert.sameValue(init, undefined, 'binding is initialized to `undefined`'); 40 assert.sameValue(changed, 123, 'binding is mutable'); 41 assert.throws(ReferenceError, function() { 42 f; 43 }, 'global binding is not created'); 44 45 reportCompare(0, 0);