block-decl-global-skip-early-err-for-in.js (1235B)
1 // This file was procedurally generated from the following sources: 2 // - src/annex-b-fns/global-skip-early-err-for-in.case 3 // - src/annex-b-fns/global/block.template 4 /*--- 5 description: Extension not observed when creation of variable binding would produce an early error (for-of statement) (Block statement in the global scope containing a function declaration) 6 esid: sec-web-compat-globaldeclarationinstantiation 7 flags: [generated, noStrict] 8 info: | 9 B.3.3.2 Changes to GlobalDeclarationInstantiation 10 11 [...] 12 b. If replacing the FunctionDeclaration f with a VariableStatement that has 13 F as a BindingIdentifier would not produce any Early Errors for script, 14 then 15 [...] 16 ---*/ 17 assert.throws(ReferenceError, function() { 18 f; 19 }, 'An initialized binding is not created prior to evaluation'); 20 assert.sameValue( 21 typeof f, 22 'undefined', 23 'An uninitialized binding is not created prior to evaluation' 24 ); 25 26 for (let f in { key: 0 }) { 27 28 { 29 function f() { } 30 } 31 32 } 33 34 assert.throws(ReferenceError, function() { 35 f; 36 }, 'An initialized binding is not created following evaluation'); 37 assert.sameValue( 38 typeof f, 39 'undefined', 40 'An uninitialized binding is not created following evaluation' 41 ); 42 43 reportCompare(0, 0);