msw.polyfill.js

// msw.polyfill.js
import "fast-text-encoding"
import "react-native-url-polyfill/auto"

import { TransformStream } from "web-streams-polyfill"

if (typeof global.TransformStream === "undefined") {
	global.TransformStream = TransformStream
}

if (typeof global.MessageEvent === "undefined") {
	global.MessageEvent = function MessageEvent(type, eventInitDict = {}) {
		this.type = type
		this.data = eventInitDict.data || null
		this.origin = eventInitDict.origin || ""
		this.lastEventId = eventInitDict.lastEventId || ""
		this.source = eventInitDict.source || null
		this.ports = eventInitDict.ports || []
	}
}

if (typeof global.Event === "undefined") {
	global.Event = function Event(type, eventInitDict = {}) {
		this.type = type
		this.bubbles = eventInitDict.bubbles || false
		this.cancelable = eventInitDict.cancelable || false
		this.target = null
		this.currentTarget = null
		this.eventPhase = 0
		this.defaultPrevented = false
		this.isTrusted = false

		this.preventDefault = function () {
			this.defaultPrevented = true
		}
	}
}

if (typeof global.EventTarget === "undefined") {
	global.EventTarget = function EventTarget() {
		this.listeners = {}
	}

	global.EventTarget.prototype.addEventListener = function (type, callback) {
		if (!this.listeners[type]) {
			this.listeners[type] = []
		}
		this.listeners[type].push(callback)
	}

	global.EventTarget.prototype.removeEventListener = function (type, callback) {
		if (!this.listeners[type]) return
		this.listeners[type] = this.listeners[type].filter((cb) => cb !== callback)
	}

	global.EventTarget.prototype.dispatchEvent = function (event) {
		if (!this.listeners[event.type]) return true
		this.listeners[event.type].forEach((cb) => cb.call(this, event))
		return !event.defaultPrevented
	}
}

if (typeof global.BroadcastChannel === "undefined") {
	global.BroadcastChannel = class BroadcastChannel extends global.EventTarget {
		constructor(channelName) {
			super()
			this.channelName = channelName
			this._subscribers = []
		}

		postMessage(message) {
			const event = new global.MessageEvent("message", {
				data: message,
			})

			setTimeout(() => {
				this.dispatchEvent(event)
			}, 0)
		}

		close() {
			this._subscribers = []
		}
	}
}