arguments and eval should be allowed in the return position in strict functions

[raskad]

In strict mode arguments and eval are mostly treated as keywords. For example they cannot be assigned to. But they should be allowed as return values from a strict function.

The following code examples currently fail, but should work:

let eval = 1;

function a(){
    "use strict";
    return eval;
}

a() // returns 1

function a(){
    "use strict";
    return arguments;
}

a(1,2) // returns [Arguments] { '0': 1, '1': 2 }

Based on the error message a good starting point would be here:

boa/boa/src/syntax/lexer/identifier.rs

Line 119 in c977b8e

"using future reserved keyword '{}' not allowed in strict mode",

[am-a-man]

hey,
I would like to work on this, could you assign me this issue?

[Razican]

@am-a-man Do you have any updates on the progress of this?

[am-a-man]

@Razican sorry for the long delay, will try to complete it by the end of this week

[raskad]

Fixed by #2069