Added checks to make sure the specified track exists

Added precondition checks to validate input files and paths to return more informative error messages as per #2

node_modules/jsdom/lib/jsdom/living/generated/EventTarget.js

@@ -0,0 +1,246 @@
+"use strict";
+
+const conversions = require("webidl-conversions");
+const utils = require("./utils.js");
+
+const convertAddEventListenerOptions = require("./AddEventListenerOptions.js").convert;
+const convertEventListenerOptions = require("./EventListenerOptions.js").convert;
+const convertEvent = require("./Event.js").convert;
+const impl = utils.implSymbol;
+
+function EventTarget() {
+  if (new.target === undefined) {
+    throw new TypeError(
+      "Failed to construct 'EventTarget'. Please use the 'new' operator; this constructor " +
+        "cannot be called as a function."
+    );
+  }
+
+  iface.setup(this);
+}
+
+Object.defineProperty(EventTarget, "prototype", {
+  value: EventTarget.prototype,
+  writable: false,
+  enumerable: false,
+  configurable: false
+});
+
+EventTarget.prototype.addEventListener = function addEventListener(type, callback) {
+  if (!this || !module.exports.is(this)) {
+    throw new TypeError("Illegal invocation");
+  }
+
+  if (arguments.length < 2) {
+    throw new TypeError(
+      "Failed to execute 'addEventListener' on 'EventTarget': 2 arguments required, but only " +
+        arguments.length +
+        " present."
+    );
+  }
+  const args = [];
+  {
+    let curArg = arguments[0];
+    curArg = conversions["DOMString"](curArg, {
+      context: "Failed to execute 'addEventListener' on 'EventTarget': parameter 1"
+    });
+    args.push(curArg);
+  }
+  {
+    let curArg = arguments[1];
+    if (curArg === null || curArg === undefined) {
+      curArg = null;
+    } else {
+      curArg = utils.tryImplForWrapper(curArg);
+    }
+    args.push(curArg);
+  }
+  {
+    let curArg = arguments[2];
+    if (curArg !== undefined) {
+      if (curArg === null || curArg === undefined) {
+        curArg = convertAddEventListenerOptions(curArg, {
+          context: "Failed to execute 'addEventListener' on 'EventTarget': parameter 3"
+        });
+      } else if (utils.isObject(curArg)) {
+        curArg = convertAddEventListenerOptions(curArg, {
+          context: "Failed to execute 'addEventListener' on 'EventTarget': parameter 3" + " dictionary"
+        });
+      } else if (typeof curArg === "boolean") {
+        curArg = conversions["boolean"](curArg, {
+          context: "Failed to execute 'addEventListener' on 'EventTarget': parameter 3"
+        });
+      } else {
+        curArg = conversions["boolean"](curArg, {
+          context: "Failed to execute 'addEventListener' on 'EventTarget': parameter 3"
+        });
+      }
+    }
+    args.push(curArg);
+  }
+  return this[impl].addEventListener(...args);
+};
+
+EventTarget.prototype.removeEventListener = function removeEventListener(type, callback) {
+  if (!this || !module.exports.is(this)) {
+    throw new TypeError("Illegal invocation");
+  }
+
+  if (arguments.length < 2) {
+    throw new TypeError(
+      "Failed to execute 'removeEventListener' on 'EventTarget': 2 arguments required, but only " +
+        arguments.length +
+        " present."
+    );
+  }
+  const args = [];
+  {
+    let curArg = arguments[0];
+    curArg = conversions["DOMString"](curArg, {
+      context: "Failed to execute 'removeEventListener' on 'EventTarget': parameter 1"
+    });
+    args.push(curArg);
+  }
+  {
+    let curArg = arguments[1];
+    if (curArg === null || curArg === undefined) {
+      curArg = null;
+    } else {
+      curArg = utils.tryImplForWrapper(curArg);
+    }
+    args.push(curArg);
+  }
+  {
+    let curArg = arguments[2];
+    if (curArg !== undefined) {
+      if (curArg === null || curArg === undefined) {
+        curArg = convertEventListenerOptions(curArg, {
+          context: "Failed to execute 'removeEventListener' on 'EventTarget': parameter 3"
+        });
+      } else if (utils.isObject(curArg)) {
+        curArg = convertEventListenerOptions(curArg, {
+          context: "Failed to execute 'removeEventListener' on 'EventTarget': parameter 3" + " dictionary"
+        });
+      } else if (typeof curArg === "boolean") {
+        curArg = conversions["boolean"](curArg, {
+          context: "Failed to execute 'removeEventListener' on 'EventTarget': parameter 3"
+        });
+      } else {
+        curArg = conversions["boolean"](curArg, {
+          context: "Failed to execute 'removeEventListener' on 'EventTarget': parameter 3"
+        });
+      }
+    }
+    args.push(curArg);
+  }
+  return this[impl].removeEventListener(...args);
+};
+
+EventTarget.prototype.dispatchEvent = function dispatchEvent(event) {
+  if (!this || !module.exports.is(this)) {
+    throw new TypeError("Illegal invocation");
+  }
+
+  if (arguments.length < 1) {
+    throw new TypeError(
+      "Failed to execute 'dispatchEvent' on 'EventTarget': 1 argument required, but only " +
+        arguments.length +
+        " present."
+    );
+  }
+  const args = [];
+  {
+    let curArg = arguments[0];
+    curArg = convertEvent(curArg, { context: "Failed to execute 'dispatchEvent' on 'EventTarget': parameter 1" });
+    args.push(curArg);
+  }
+  return this[impl].dispatchEvent(...args);
+};
+
+Object.defineProperty(EventTarget.prototype, Symbol.toStringTag, {
+  value: "EventTarget",
+  writable: false,
+  enumerable: false,
+  configurable: true
+});
+
+const iface = {
+  // When an interface-module that implements this interface as a mixin is loaded, it will append its own `.is()`
+  // method into this array. It allows objects that directly implements *those* interfaces to be recognized as
+  // implementing this mixin interface.
+  _mixedIntoPredicates: [],
+  is(obj) {
+    if (obj) {
+      if (utils.hasOwn(obj, impl) && obj[impl] instanceof Impl.implementation) {
+        return true;
+      }
+      for (const isMixedInto of module.exports._mixedIntoPredicates) {
+        if (isMixedInto(obj)) {
+          return true;
+        }
+      }
+    }
+    return false;
+  },
+  isImpl(obj) {
+    if (obj) {
+      if (obj instanceof Impl.implementation) {
+        return true;
+      }
+
+      const wrapper = utils.wrapperForImpl(obj);
+      for (const isMixedInto of module.exports._mixedIntoPredicates) {
+        if (isMixedInto(wrapper)) {
+          return true;
+        }
+      }
+    }
+    return false;
+  },
+  convert(obj, { context = "The provided value" } = {}) {
+    if (module.exports.is(obj)) {
+      return utils.implForWrapper(obj);
+    }
+    throw new TypeError(`${context} is not of type 'EventTarget'.`);
+  },
+
+  create(constructorArgs, privateData) {
+    let obj = Object.create(EventTarget.prototype);
+    obj = this.setup(obj, constructorArgs, privateData);
+    return obj;
+  },
+  createImpl(constructorArgs, privateData) {
+    let obj = Object.create(EventTarget.prototype);
+    obj = this.setup(obj, constructorArgs, privateData);
+    return utils.implForWrapper(obj);
+  },
+  _internalSetup(obj) {},
+  setup(obj, constructorArgs, privateData) {
+    if (!privateData) privateData = {};
+
+    privateData.wrapper = obj;
+
+    this._internalSetup(obj);
+    Object.defineProperty(obj, impl, {
+      value: new Impl.implementation(constructorArgs, privateData),
+      writable: false,
+      enumerable: false,
+      configurable: true
+    });
+
+    obj[impl][utils.wrapperSymbol] = obj;
+    if (Impl.init) {
+      Impl.init(obj[impl], privateData);
+    }
+    return obj;
+  },
+  interface: EventTarget,
+  expose: {
+    Window: { EventTarget },
+    Worker: { EventTarget },
+    AudioWorklet: { EventTarget }
+  }
+}; // iface
+module.exports = iface;
+
+const Impl = require("../events/EventTarget-impl.js");