isDate crashing on string of size 4

[NSchneiders]

Describe the bug
I am using the isDate function of validator and when I use it on string of exactly size 4, it crashes.

Examples
Code line:
validator.isDate('test')

error code:
at Object.isDate (path-to-y-project\backend\node_modules\validator\lib\isDate.js:86:19)

Additional context
Validator.js version:
"node_modules/validator": {
"version": "13.12.0",
"resolved": "https://registry.npmjs.org/validator/-/validator-13.12.0.tgz",
"integrity": "sha512-****",
"license": "MIT",
"engines": {
"node": ">= 0.10"
}
},
Node.js version: Node.js v20.18.0
OS platform: windows

My current fix
.
.
.
dateObj[formatWord.charAt(0)] = dateWord;
}
} catch (err) {
_iterator.e(err);
} finally {
_iterator.f();
}
if (dateObj.y == null || dateObj.m == null || dateObj.d == null){
console.log("Modified by me");
return false;
}
var fullYear = dateObj.y;

// Check if the year starts with a hyphen
if (fullYear.startsWith('-')) {
  return false; // Hyphen before year is not allowed
}

.
.
.

I have just brute force the fix and it is probably terrible :)

[jamro]

It seems to be duplicated with #2427 and fixed by #2443 .
I was able to reproduce the problem on 13.12.0, but it does not occur in the latest dev version.