A validator class to expose method to validate various numbers such as Mobile, PAN, UPI id

`export class Validator {
static mobile(value: string): boolean {
return /^[6789]\d{9}$/.test(value);
}

static pincode(value: string | number): boolean {
return /^[1-9]\d{5}$/.test(value as string);
}

static pan(value: string): boolean {
return /^[A-Z]{3}[PCHABGJLFTE][A-Z]\d{4}[A-Z]$/i.test(value);
}

}`

Something like this, found on Github