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/**
 * Module: function.bind.with-exotic-object-slots
 *
 * TypeScript declaration for a custom override of `Function.prototype.bind`
 * that stores ECMAScript-like internal slot metadata as Symbol-based properties
 * on bound functions.
 * 
 * Inspired by ECMAScript internal slots:
 * - `[[BoundTargetFunction]]`
 * - `[[BoundThis]]`

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Symbol.fnDirectives = Symbol.for('fnDirectives');

// const directivesSymbol = Symbol.fnDirectives;
// console.log(Symbol.for(Symbol.keyFor(directivesSymbol)) === Symbol.fnDirectives); // true

const functionPrototype = Function.prototype;
const toFunctionString = functionPrototype.toString;

function parseBodyFromFctString(fctString) {
  const [ head ] = fctString

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const defaultDescriptorOptions = { enumerable: false, writable: true, configurable: true };
const sealedDescriptorOptions = { enumerable: false, configurable: false };

/**
 * Returns the internal `[[Class]]` tag of a value, like `[object String]` or returns `undefined`
 * if no argument was passed.
 *
 * @param {...any} args
 *  A variadic argument list. The first argument (`args[0]`) is the optional `value` parameter.
 *  Its **presence** is detected via `args.length`, allowing the function to distinguish between

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<!--
  //  https://stackoverflow.com/questions/78105670/cutom-elements-cant-extend-from-button-illegal-constructor/78106993
//-->

<script>

(function (globalThis) {
  // scope of `dom-safari` or `custom-element-safari` module
  'use strict';

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(function () {
// BEGIN :: module scope
'use strict';


/* function type specifc detection helpers */


/**
 * Detects whether a passed function type features a truly `writable`

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(function () {
// BEGIN :: module scope
'use strict';

/* function type specifc detection helpers */


/**
 * Detects whether a passed function type features a truly `writable`
 * `prototype` property.

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// a strictly educational deep clone attempt/approach.

function exposeInternalyType(value) {
  return Object.prototype.toString.call(value);
}

function isRegExp(value) {
  return exposeInternalyType(value) === '[object RegExp]';
}
function isDate(value) {

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/**
 *  - include core-js for enabling/implementing the new `Set` methods
 *
 *    <script src="https://cdnjs.cloudflare.com/ajax/libs/core-js/3.36.0/minified.js"></script>
 *
 *  - for related tasks, like splitting any given keypath most generically into key-partials,
 *    have a look at ... [https://regex101.com/r/tew8gr/3] ... and its regular expression ...
 *
 *    possible usage:
 *

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class PausedStateSignal extends EventTarget {
  // shared protected/private state.
  #state;

  constructor(connect) {
    super();

    this.#state = {
      isPaused: false,
    };

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// utility/helper functions.

function getFunctionName(value) {
  return Object.getOwnPropertyDescriptor(value, 'name').value;
  // return value.name;
}

function getFunctionSignature(value) {
  return Function.prototype.toString.call(value).trim();
}