Please remove the requirement for returning undefined. The C# version does away with it, for the better. It adds little to the Kata and instead makes translating the task more inconvenient.

This kata is a subject to deduplication process here: https://github.com/codewars/content-issues/issues/214.
Please join the discussion to help us identify duplicate kata and retire them.

Compilations tests should be added for cases like calc.One.One.One or calc.One.Plus.Plus.Times

I dont understand how each Number Attribute has to have a getter which returns a double (because the result has to be a double),
but at the same time it should return an FluentCalculator, so that the next operator can call it.
I could solve it if every Test had a Result() function at the end... but i have no clue.

TypeScript Translation

More weirdness

Oh no! I didn't map appropriately. - Expected: [Console {
log: [Function: bound consoleCall],
debug: [Function: bound consoleCall],
info: [Function: bound consoleCall],
warn: [Function: bound consoleCall],
error: [Function: bound consoleCall],
dir: [Function: bound consoleCall],
time: [Function: bound consoleCall],
timeEnd: [Function: bound consoleCall],

Spits out the same error message on most test cases, not really sure what's going on.

Oh no! I didn't map appropriately. - Expected: [1], instead got: [1]

console.log doesn't seem to work in certain cases.

console.log(Object.keys(this));

Can someone pls share any link or explain how the hell .forEach handles this length properly and for() cycle not? )
Is it very important to understand in real life?

Hi. I am thrown by this final test case. Why would this resulting array be ['0']? Is this possibly in error? It looks to be a duplicate value from the test just above.

Array.prototype["3"] = 42;
let filtered_array_lower = new Array(10).filter(x => true);
Test.assertSimilar(Object.keys(filtered_array_lower), ['0'], "Oh no! It was fooled by Array.prototype['3']");

• Such solution should be invalidated

• Node 12 should be enabled (Refer this and this for more info)

• Such solution should be invalidated

• Node 12 should be enabled (Refer this and this for more info)