if-decl-no-else-func-skip-early-err-for-in.js (1816B)
1 // This file was procedurally generated from the following sources: 2 // - src/annex-b-fns/func-skip-early-err-for-in.case 3 // - src/annex-b-fns/func/if-decl-no-else.template 4 /*--- 5 description: Extension not observed when creation of variable binding would produce an early error (for-of 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 ii. If replacing the FunctionDeclaration f with a VariableStatement that 22 has F as a BindingIdentifier would not produce any Early Errors for 23 func and F is not an element of BoundNames of argumentsList, then 24 [...] 25 ---*/ 26 27 (function() { 28 assert.throws(ReferenceError, function() { 29 f; 30 }, 'An initialized binding is not created prior to evaluation'); 31 assert.sameValue( 32 typeof f, 33 'undefined', 34 'An uninitialized binding is not created prior to evaluation' 35 ); 36 37 for (let f in { key: 0 }) { 38 39 if (true) function f() { } 40 41 } 42 43 assert.throws(ReferenceError, function() { 44 f; 45 }, 'An initialized binding is not created following evaluation'); 46 assert.sameValue( 47 typeof f, 48 'undefined', 49 'An uninitialized binding is not created following evaluation' 50 ); 51 }()); 52 53 reportCompare(0, 0);