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89e15ce814
Ref https://github.com/tc39/ecma262/issues/815 Ref https://github.com/tc39/ecma262/pull/889 This is testing the current semantics of the specs, rather than the semantics in the proposed referenced issue.
55 lines
1.6 KiB
JavaScript
55 lines
1.6 KiB
JavaScript
/*---
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description: Functions named 'arguments' have legacy hoisting semantics
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esid: sec-web-compat-functiondeclarationinstantiation
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flags: [noStrict]
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info: |
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FunctionDeclarationInstantiation ( _func_, _argumentsList_ )
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[...]
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7. Let _parameterNames_ be the BoundNames of _formals_.
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[...]
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22. If argumentsObjectNeeded is true, then
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f. Append "arguments" to parameterNames.
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Changes to FunctionDeclarationInstantiation
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[...]
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ii. If replacing the |FunctionDeclaration| _f_ with a |VariableStatement| that has _F_
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as a |BindingIdentifier| would not produce any Early Errors for _func_ and _F_ is
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not an element of _parameterNames_, then
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[...]
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---*/
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// Simple parameters
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(function() {
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assert.sameValue(arguments.toString(), "[object Arguments]");
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{
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assert.sameValue(arguments(), undefined);
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function arguments() {}
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assert.sameValue(arguments(), undefined);
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}
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assert.sameValue(arguments.toString(), "[object Arguments]");
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}());
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// Single named parameter
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(function(x) {
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assert.sameValue(arguments.toString(), "[object Arguments]");
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{
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assert.sameValue(arguments(), undefined);
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function arguments() {}
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assert.sameValue(arguments(), undefined);
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}
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assert.sameValue(arguments.toString(), "[object Arguments]");
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}());
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// Non-simple parameters
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(function(..._) {
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assert.sameValue(arguments.toString(), "[object Arguments]");
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{
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assert.sameValue(arguments(), undefined);
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function arguments() {}
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assert.sameValue(arguments(), undefined);
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}
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assert.sameValue(arguments.toString(), "[object Arguments]");
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}());
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