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-rw-r--r--lib/websocket/events.js303
1 files changed, 303 insertions, 0 deletions
diff --git a/lib/websocket/events.js b/lib/websocket/events.js
new file mode 100644
index 0000000..621a226
--- /dev/null
+++ b/lib/websocket/events.js
@@ -0,0 +1,303 @@
+'use strict'
+
+const { webidl } = require('../fetch/webidl')
+const { kEnumerableProperty } = require('../core/util')
+const { MessagePort } = require('worker_threads')
+
+/**
+ * @see https://html.spec.whatwg.org/multipage/comms.html#messageevent
+ */
+class MessageEvent extends Event {
+ #eventInit
+
+ constructor (type, eventInitDict = {}) {
+ webidl.argumentLengthCheck(arguments, 1, { header: 'MessageEvent constructor' })
+
+ type = webidl.converters.DOMString(type)
+ eventInitDict = webidl.converters.MessageEventInit(eventInitDict)
+
+ super(type, eventInitDict)
+
+ this.#eventInit = eventInitDict
+ }
+
+ get data () {
+ webidl.brandCheck(this, MessageEvent)
+
+ return this.#eventInit.data
+ }
+
+ get origin () {
+ webidl.brandCheck(this, MessageEvent)
+
+ return this.#eventInit.origin
+ }
+
+ get lastEventId () {
+ webidl.brandCheck(this, MessageEvent)
+
+ return this.#eventInit.lastEventId
+ }
+
+ get source () {
+ webidl.brandCheck(this, MessageEvent)
+
+ return this.#eventInit.source
+ }
+
+ get ports () {
+ webidl.brandCheck(this, MessageEvent)
+
+ if (!Object.isFrozen(this.#eventInit.ports)) {
+ Object.freeze(this.#eventInit.ports)
+ }
+
+ return this.#eventInit.ports
+ }
+
+ initMessageEvent (
+ type,
+ bubbles = false,
+ cancelable = false,
+ data = null,
+ origin = '',
+ lastEventId = '',
+ source = null,
+ ports = []
+ ) {
+ webidl.brandCheck(this, MessageEvent)
+
+ webidl.argumentLengthCheck(arguments, 1, { header: 'MessageEvent.initMessageEvent' })
+
+ return new MessageEvent(type, {
+ bubbles, cancelable, data, origin, lastEventId, source, ports
+ })
+ }
+}
+
+/**
+ * @see https://websockets.spec.whatwg.org/#the-closeevent-interface
+ */
+class CloseEvent extends Event {
+ #eventInit
+
+ constructor (type, eventInitDict = {}) {
+ webidl.argumentLengthCheck(arguments, 1, { header: 'CloseEvent constructor' })
+
+ type = webidl.converters.DOMString(type)
+ eventInitDict = webidl.converters.CloseEventInit(eventInitDict)
+
+ super(type, eventInitDict)
+
+ this.#eventInit = eventInitDict
+ }
+
+ get wasClean () {
+ webidl.brandCheck(this, CloseEvent)
+
+ return this.#eventInit.wasClean
+ }
+
+ get code () {
+ webidl.brandCheck(this, CloseEvent)
+
+ return this.#eventInit.code
+ }
+
+ get reason () {
+ webidl.brandCheck(this, CloseEvent)
+
+ return this.#eventInit.reason
+ }
+}
+
+// https://html.spec.whatwg.org/multipage/webappapis.html#the-errorevent-interface
+class ErrorEvent extends Event {
+ #eventInit
+
+ constructor (type, eventInitDict) {
+ webidl.argumentLengthCheck(arguments, 1, { header: 'ErrorEvent constructor' })
+
+ super(type, eventInitDict)
+
+ type = webidl.converters.DOMString(type)
+ eventInitDict = webidl.converters.ErrorEventInit(eventInitDict ?? {})
+
+ this.#eventInit = eventInitDict
+ }
+
+ get message () {
+ webidl.brandCheck(this, ErrorEvent)
+
+ return this.#eventInit.message
+ }
+
+ get filename () {
+ webidl.brandCheck(this, ErrorEvent)
+
+ return this.#eventInit.filename
+ }
+
+ get lineno () {
+ webidl.brandCheck(this, ErrorEvent)
+
+ return this.#eventInit.lineno
+ }
+
+ get colno () {
+ webidl.brandCheck(this, ErrorEvent)
+
+ return this.#eventInit.colno
+ }
+
+ get error () {
+ webidl.brandCheck(this, ErrorEvent)
+
+ return this.#eventInit.error
+ }
+}
+
+Object.defineProperties(MessageEvent.prototype, {
+ [Symbol.toStringTag]: {
+ value: 'MessageEvent',
+ configurable: true
+ },
+ data: kEnumerableProperty,
+ origin: kEnumerableProperty,
+ lastEventId: kEnumerableProperty,
+ source: kEnumerableProperty,
+ ports: kEnumerableProperty,
+ initMessageEvent: kEnumerableProperty
+})
+
+Object.defineProperties(CloseEvent.prototype, {
+ [Symbol.toStringTag]: {
+ value: 'CloseEvent',
+ configurable: true
+ },
+ reason: kEnumerableProperty,
+ code: kEnumerableProperty,
+ wasClean: kEnumerableProperty
+})
+
+Object.defineProperties(ErrorEvent.prototype, {
+ [Symbol.toStringTag]: {
+ value: 'ErrorEvent',
+ configurable: true
+ },
+ message: kEnumerableProperty,
+ filename: kEnumerableProperty,
+ lineno: kEnumerableProperty,
+ colno: kEnumerableProperty,
+ error: kEnumerableProperty
+})
+
+webidl.converters.MessagePort = webidl.interfaceConverter(MessagePort)
+
+webidl.converters['sequence<MessagePort>'] = webidl.sequenceConverter(
+ webidl.converters.MessagePort
+)
+
+const eventInit = [
+ {
+ key: 'bubbles',
+ converter: webidl.converters.boolean,
+ defaultValue: false
+ },
+ {
+ key: 'cancelable',
+ converter: webidl.converters.boolean,
+ defaultValue: false
+ },
+ {
+ key: 'composed',
+ converter: webidl.converters.boolean,
+ defaultValue: false
+ }
+]
+
+webidl.converters.MessageEventInit = webidl.dictionaryConverter([
+ ...eventInit,
+ {
+ key: 'data',
+ converter: webidl.converters.any,
+ defaultValue: null
+ },
+ {
+ key: 'origin',
+ converter: webidl.converters.USVString,
+ defaultValue: ''
+ },
+ {
+ key: 'lastEventId',
+ converter: webidl.converters.DOMString,
+ defaultValue: ''
+ },
+ {
+ key: 'source',
+ // Node doesn't implement WindowProxy or ServiceWorker, so the only
+ // valid value for source is a MessagePort.
+ converter: webidl.nullableConverter(webidl.converters.MessagePort),
+ defaultValue: null
+ },
+ {
+ key: 'ports',
+ converter: webidl.converters['sequence<MessagePort>'],
+ get defaultValue () {
+ return []
+ }
+ }
+])
+
+webidl.converters.CloseEventInit = webidl.dictionaryConverter([
+ ...eventInit,
+ {
+ key: 'wasClean',
+ converter: webidl.converters.boolean,
+ defaultValue: false
+ },
+ {
+ key: 'code',
+ converter: webidl.converters['unsigned short'],
+ defaultValue: 0
+ },
+ {
+ key: 'reason',
+ converter: webidl.converters.USVString,
+ defaultValue: ''
+ }
+])
+
+webidl.converters.ErrorEventInit = webidl.dictionaryConverter([
+ ...eventInit,
+ {
+ key: 'message',
+ converter: webidl.converters.DOMString,
+ defaultValue: ''
+ },
+ {
+ key: 'filename',
+ converter: webidl.converters.USVString,
+ defaultValue: ''
+ },
+ {
+ key: 'lineno',
+ converter: webidl.converters['unsigned long'],
+ defaultValue: 0
+ },
+ {
+ key: 'colno',
+ converter: webidl.converters['unsigned long'],
+ defaultValue: 0
+ },
+ {
+ key: 'error',
+ converter: webidl.converters.any
+ }
+])
+
+module.exports = {
+ MessageEvent,
+ CloseEvent,
+ ErrorEvent
+}