if-decl-no-else-func-skip-early-err-try.js (2227B)
1 // This file was procedurally generated from the following sources: 2 // - src/annex-b-fns/func-skip-early-err-try.case 3 // - src/annex-b-fns/func/if-decl-no-else.template 4 /*--- 5 description: Extension is observed when creation of variable binding would not produce an early error (try statement) (IfStatement without an else clause 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 B.3.5 VariableStatements in Catch Blocks 28 29 [...] 30 - It is a Syntax Error if any element of the BoundNames of CatchParameter 31 also occurs in the VarDeclaredNames of Block unless CatchParameter is 32 CatchParameter:BindingIdentifier and that element is only bound by a 33 VariableStatement, the VariableDeclarationList of a for statement, or the 34 ForBinding of a for-in statement. 35 ---*/ 36 37 (function() { 38 assert.throws(ReferenceError, function() { 39 f; 40 }, 'An initialized binding is not created prior to evaluation'); 41 assert.sameValue( 42 typeof f, 43 'undefined', 44 'An uninitialized binding is not created prior to evaluation' 45 ); 46 47 try { 48 throw {}; 49 } catch ({ f }) { 50 51 if (true) function f() { } 52 53 } 54 55 assert.throws(ReferenceError, function() { 56 f; 57 }, 'An initialized binding is not created following evaluation'); 58 assert.sameValue( 59 typeof f, 60 'undefined', 61 'An uninitialized binding is not created following evaluation' 62 ); 63 }()); 64 65 reportCompare(0, 0);