switch-dflt-func-skip-early-err.js (1063B)
1 // This file was procedurally generated from the following sources: 2 // - src/annex-b-fns/func-skip-early-err.case 3 // - src/annex-b-fns/func/switch-dflt.template 4 /*--- 5 description: Extension not observed when creation of variable binding would produce an early error (Funtion declaration in the `default` clause of a `switch` statement in function scope) 6 esid: sec-web-compat-functiondeclarationinstantiation 7 flags: [generated, noStrict] 8 info: | 9 B.3.3.1 Changes to FunctionDeclarationInstantiation 10 11 [...] 12 ii. If replacing the FunctionDeclaration f with a VariableStatement that 13 has F as a BindingIdentifier would not produce any Early Errors for 14 func and F is not an element of BoundNames of argumentsList, then 15 [...] 16 ---*/ 17 var init, after; 18 19 (function() { 20 let f = 123; 21 init = f; 22 23 switch (1) { 24 default: 25 function f() { } 26 } 27 28 after = f; 29 }()); 30 31 assert.sameValue(init, 123, 'binding is not initialized to `undefined`'); 32 assert.sameValue(after, 123, 'value is not updated following evaluation'); 33 34 reportCompare(0, 0);