Converting a Javascript constructor name in PascalCase to file-case. Can be used with ES2015 (formerly ES6) classes to get the actual file name.

PascalCaseToFileCase.js

// ES2015 classes
class MyClass {
    // Would return: my-class
    toFileCase() {
        var className = this.constructor.name.toString();
        var normalised = className.replace(/((?!^)[A-Z])/g, '-$1').toLowerCase();
        return normalised;
    }
}

// ES5 prototypal inheritance
function MyClass() {
}
// Would return: my-class
MyClass.prototype.toFileCase = function() {
        var className = this.constructor.name.toString();
        var normalised = className.replace(/((?!^)[A-Z])/g, '-$1').toLowerCase();
        return normalised;
}