Set.prototype.delete() missing name after . operator

[salsan]

I use Rhino 1.7.12 2020 01 13 under windows 10 and these flags "-version 200 -strict -f set.js"

My Code

const fruits = new Set(['Apple','Mango']);
 
fruits.delete(0);
print(fruits);

result is

js: "set.js", line 3: missing name after . operator
js: fruits.delete(0);
js: .............^
js: "set.js", line 1: Compilation produced 1 syntax errors.

I solve with

const fruits = new Set(['Apple','Mango']);
 
fruits["delete"](0);
print(fruits);

bu why first example doesn't work ?

[rbri]

Can you please make sure there is no hidden char in your set.js.Your code works here without problems.

[rbri]

Can you please prepare a simple test case to make it easy for us to reproduce this.

You can have a look at the packages org.mozilla.javascript.tests.es5 or org.mozilla.javascript.tests.es6 for sample tests.

[salsan]

Hi @rbri,

This is no sense, I only update Windows 10 Home to 1909 version last week and now my set.js work

Rhino 1.7.12 2020 01 13
Microsoft Windows [Versione 10.0.18363.836]