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nim.user.NIMUser
nim/user.NIMUser
-
EventEmitter
↳
NIMUser
- once
- on
- listenerCount
- getEventListeners
- addListener
- removeListener
- off
- removeAllListeners
- setMaxListeners
- getMaxListeners
- listeners
- rawListeners
- emit
- listenerCount
- prependListener
- prependOnceListener
- eventNames
- on
- once
- initEventHandlers
- setBlack
- setMute
- getMutelist
- getBlacklist
- getUserNameCard
- getUserNameCardOnline
- updateMyUserNameCard
- queryUserListByKeyword
- updatePushToken
▸ Static
once(emitter
, eventName
, options?
): Promise
<any
[]>
Creates a Promise
that is fulfilled when the EventEmitter
emits the given
event or that is rejected if the EventEmitter
emits 'error'
while waiting.
The Promise
will resolve with an array of all the arguments emitted to the
given event.
This method is intentionally generic and works with the web platform EventTarget interface, which has no special'error'
event
semantics and does not listen to the 'error'
event.
const { once, EventEmitter } = require('events');
async function run() {
const ee = new EventEmitter();
process.nextTick(() => {
ee.emit('myevent', 42);
});
const [value] = await once(ee, 'myevent');
console.log(value);
const err = new Error('kaboom');
process.nextTick(() => {
ee.emit('error', err);
});
try {
await once(ee, 'myevent');
} catch (err) {
console.log('error happened', err);
}
}
run();
The special handling of the 'error'
event is only used when events.once()
is used to wait for another event. If events.once()
is used to wait for the
'error'
event itself, then it is treated as any other kind of event without
special handling:
const { EventEmitter, once } = require('events');
const ee = new EventEmitter();
once(ee, 'error')
.then(([err]) => console.log('ok', err.message))
.catch((err) => console.log('error', err.message));
ee.emit('error', new Error('boom'));
// Prints: ok boom
An AbortSignal
can be used to cancel waiting for the event:
const { EventEmitter, once } = require('events');
const ee = new EventEmitter();
const ac = new AbortController();
async function foo(emitter, event, signal) {
try {
await once(emitter, event, { signal });
console.log('event emitted!');
} catch (error) {
if (error.name === 'AbortError') {
console.error('Waiting for the event was canceled!');
} else {
console.error('There was an error', error.message);
}
}
}
foo(ee, 'foo', ac.signal);
ac.abort(); // Abort waiting for the event
ee.emit('foo'); // Prints: Waiting for the event was canceled!
Since
v11.13.0, v10.16.0
Name | Type |
---|---|
emitter |
NodeEventTarget |
eventName |
string | symbol
|
options? |
StaticEventEmitterOptions |
Promise
<any
[]>
▸ Static
once(emitter
, eventName
, options?
): Promise
<any
[]>
Name | Type |
---|---|
emitter |
DOMEventTarget |
eventName |
string |
options? |
StaticEventEmitterOptions |
Promise
<any
[]>
▸ Static
on(emitter
, eventName
, options?
): AsyncIterableIterator
<any
>
const { on, EventEmitter } = require('events');
(async () => {
const ee = new EventEmitter();
// Emit later on
process.nextTick(() => {
ee.emit('foo', 'bar');
ee.emit('foo', 42);
});
for await (const event of on(ee, 'foo')) {
// The execution of this inner block is synchronous and it
// processes one event at a time (even with await). Do not use
// if concurrent execution is required.
console.log(event); // prints ['bar'] [42]
}
// Unreachable here
})();
Returns an AsyncIterator
that iterates eventName
events. It will throw
if the EventEmitter
emits 'error'
. It removes all listeners when
exiting the loop. The value
returned by each iteration is an array
composed of the emitted event arguments.
An AbortSignal
can be used to cancel waiting on events:
const { on, EventEmitter } = require('events');
const ac = new AbortController();
(async () => {
const ee = new EventEmitter();
// Emit later on
process.nextTick(() => {
ee.emit('foo', 'bar');
ee.emit('foo', 42);
});
for await (const event of on(ee, 'foo', { signal: ac.signal })) {
// The execution of this inner block is synchronous and it
// processes one event at a time (even with await). Do not use
// if concurrent execution is required.
console.log(event); // prints ['bar'] [42]
}
// Unreachable here
})();
process.nextTick(() => ac.abort());
Since
v13.6.0, v12.16.0
Name | Type | Description |
---|---|---|
emitter |
EventEmitter |
- |
eventName |
string |
The name of the event being listened for |
options? |
StaticEventEmitterOptions |
- |
AsyncIterableIterator
<any
>
that iterates eventName
events emitted by the emitter
▸ Static
listenerCount(emitter
, eventName
): number
A class method that returns the number of listeners for the given eventName
registered on the given emitter
.
const { EventEmitter, listenerCount } = require('events');
const myEmitter = new EventEmitter();
myEmitter.on('event', () => {});
myEmitter.on('event', () => {});
console.log(listenerCount(myEmitter, 'event'));
// Prints: 2
Since
v0.9.12
Deprecated
Since v3.2.0 - Use listenerCount
instead.
Name | Type | Description |
---|---|---|
emitter |
EventEmitter |
The emitter to query |
eventName |
string | symbol
|
The event name |
number
▸ Static
getEventListeners(emitter
, name
): Function
[]
Returns a copy of the array of listeners for the event named eventName
.
For EventEmitter
s this behaves exactly the same as calling .listeners
on
the emitter.
For EventTarget
s this is the only way to get the event listeners for the
event target. This is useful for debugging and diagnostic purposes.
const { getEventListeners, EventEmitter } = require('events');
{
const ee = new EventEmitter();
const listener = () => console.log('Events are fun');
ee.on('foo', listener);
getEventListeners(ee, 'foo'); // [listener]
}
{
const et = new EventTarget();
const listener = () => console.log('Events are fun');
et.addEventListener('foo', listener);
getEventListeners(et, 'foo'); // [listener]
}
Since
v15.2.0
Name | Type |
---|---|
emitter |
EventEmitter | DOMEventTarget
|
name |
string | symbol
|
Function
[]
▸ addListener(eventName
, listener
): NIMUser
Alias for emitter.on(eventName, listener)
.
Since
v0.1.26
Name | Type |
---|---|
eventName |
string | symbol
|
listener |
(...args : any []) => void
|
▸ removeListener(eventName
, listener
): NIMUser
Removes the specified listener
from the listener array for the event namedeventName
.
const callback = (stream) => {
console.log('someone connected!');
};
server.on('connection', callback);
// ...
server.removeListener('connection', callback);
removeListener()
will remove, at most, one instance of a listener from the
listener array. If any single listener has been added multiple times to the
listener array for the specified eventName
, then removeListener()
must be
called multiple times to remove each instance.
Once an event is emitted, all listeners attached to it at the
time of emitting are called in order. This implies that anyremoveListener()
or removeAllListeners()
calls after emitting and_before_ the last listener finishes execution will
not remove them fromemit()
in progress. Subsequent events behave as expected.
const myEmitter = new MyEmitter();
const callbackA = () => {
console.log('A');
myEmitter.removeListener('event', callbackB);
};
const callbackB = () => {
console.log('B');
};
myEmitter.on('event', callbackA);
myEmitter.on('event', callbackB);
// callbackA removes listener callbackB but it will still be called.
// Internal listener array at time of emit [callbackA, callbackB]
myEmitter.emit('event');
// Prints:
// A
// B
// callbackB is now removed.
// Internal listener array [callbackA]
myEmitter.emit('event');
// Prints:
// A
Because listeners are managed using an internal array, calling this will
change the position indices of any listener registered after the listener
being removed. This will not impact the order in which listeners are called,
but it means that any copies of the listener array as returned by
the emitter.listeners()
method will need to be recreated.
When a single function has been added as a handler multiple times for a single
event (as in the example below), removeListener()
will remove the most
recently added instance. In the example the once('ping')
listener is removed:
const ee = new EventEmitter();
function pong() {
console.log('pong');
}
ee.on('ping', pong);
ee.once('ping', pong);
ee.removeListener('ping', pong);
ee.emit('ping');
ee.emit('ping');
Returns a reference to the EventEmitter
, so that calls can be chained.
Since
v0.1.26
Name | Type |
---|---|
eventName |
string | symbol
|
listener |
(...args : any []) => void
|
▸ off(eventName
, listener
): NIMUser
Alias for emitter.removeListener()
.
Since
v10.0.0
Name | Type |
---|---|
eventName |
string | symbol
|
listener |
(...args : any []) => void
|
▸ removeAllListeners(event?
): NIMUser
Removes all listeners, or those of the specified eventName
.
It is bad practice to remove listeners added elsewhere in the code,
particularly when the EventEmitter
instance was created by some other
component or module (e.g. sockets or file streams).
Returns a reference to the EventEmitter
, so that calls can be chained.
Since
v0.1.26
Name | Type |
---|---|
event? |
string | symbol
|
▸ setMaxListeners(n
): NIMUser
By default EventEmitter
s will print a warning if more than 10
listeners are
added for a particular event. This is a useful default that helps finding
memory leaks. The emitter.setMaxListeners()
method allows the limit to be
modified for this specific EventEmitter
instance. The value can be set toInfinity
(or 0
) to indicate an unlimited number of listeners.
Returns a reference to the EventEmitter
, so that calls can be chained.
Since
v0.3.5
Name | Type |
---|---|
n |
number |
▸ getMaxListeners(): number
Returns the current max listener value for the EventEmitter
which is either
set by emitter.setMaxListeners(n)
or defaults to defaultMaxListeners.
Since
v1.0.0
number
▸ listeners(eventName
): Function
[]
Returns a copy of the array of listeners for the event named eventName
.
server.on('connection', (stream) => {
console.log('someone connected!');
});
console.log(util.inspect(server.listeners('connection')));
// Prints: [ [Function] ]
Since
v0.1.26
Name | Type |
---|---|
eventName |
string | symbol
|
Function
[]
▸ rawListeners(eventName
): Function
[]
Returns a copy of the array of listeners for the event named eventName
,
including any wrappers (such as those created by .once()
).
const emitter = new EventEmitter();
emitter.once('log', () => console.log('log once'));
// Returns a new Array with a function `onceWrapper` which has a property
// `listener` which contains the original listener bound above
const listeners = emitter.rawListeners('log');
const logFnWrapper = listeners[0];
// Logs "log once" to the console and does not unbind the `once` event
logFnWrapper.listener();
// Logs "log once" to the console and removes the listener
logFnWrapper();
emitter.on('log', () => console.log('log persistently'));
// Will return a new Array with a single function bound by `.on()` above
const newListeners = emitter.rawListeners('log');
// Logs "log persistently" twice
newListeners[0]();
emitter.emit('log');
Since
v9.4.0
Name | Type |
---|---|
eventName |
string | symbol
|
Function
[]
▸ emit(eventName
, ...args
): boolean
Synchronously calls each of the listeners registered for the event namedeventName
, in the order they were registered, passing the supplied arguments
to each.
Returns true
if the event had listeners, false
otherwise.
const EventEmitter = require('events');
const myEmitter = new EventEmitter();
// First listener
myEmitter.on('event', function firstListener() {
console.log('Helloooo! first listener');
});
// Second listener
myEmitter.on('event', function secondListener(arg1, arg2) {
console.log(`event with parameters ${arg1}, ${arg2} in second listener`);
});
// Third listener
myEmitter.on('event', function thirdListener(...args) {
const parameters = args.join(', ');
console.log(`event with parameters ${parameters} in third listener`);
});
console.log(myEmitter.listeners('event'));
myEmitter.emit('event', 1, 2, 3, 4, 5);
// Prints:
// [
// [Function: firstListener],
// [Function: secondListener],
// [Function: thirdListener]
// ]
// Helloooo! first listener
// event with parameters 1, 2 in second listener
// event with parameters 1, 2, 3, 4, 5 in third listener
Since
v0.1.26
Name | Type |
---|---|
eventName |
string | symbol
|
...args |
any [] |
boolean
▸ listenerCount(eventName
): number
Returns the number of listeners listening to the event named eventName
.
Since
v3.2.0
Name | Type | Description |
---|---|---|
eventName |
string | symbol
|
The name of the event being listened for |
number
▸ prependListener(eventName
, listener
): NIMUser
Adds the listener
function to the beginning of the listeners array for the
event named eventName
. No checks are made to see if the listener
has
already been added. Multiple calls passing the same combination of eventName
and listener
will result in the listener
being added, and called, multiple
times.
server.prependListener('connection', (stream) => {
console.log('someone connected!');
});
Returns a reference to the EventEmitter
, so that calls can be chained.
Since
v6.0.0
Name | Type | Description |
---|---|---|
eventName |
string | symbol
|
The name of the event. |
listener |
(...args : any []) => void
|
The callback function |
▸ prependOnceListener(eventName
, listener
): NIMUser
Adds a one-timelistener
function for the event named eventName
to the_beginning_ of the listeners array. The next time eventName
is triggered, this
listener is removed, and then invoked.
server.prependOnceListener('connection', (stream) => {
console.log('Ah, we have our first user!');
});
Returns a reference to the EventEmitter
, so that calls can be chained.
Since
v6.0.0
Name | Type | Description |
---|---|---|
eventName |
string | symbol
|
The name of the event. |
listener |
(...args : any []) => void
|
The callback function |
▸ eventNames(): (string
| symbol
)[]
Returns an array listing the events for which the emitter has registered
listeners. The values in the array are strings or Symbol
s.
const EventEmitter = require('events');
const myEE = new EventEmitter();
myEE.on('foo', () => {});
myEE.on('bar', () => {});
const sym = Symbol('symbol');
myEE.on(sym, () => {});
console.log(myEE.eventNames());
// Prints: [ 'foo', 'bar', Symbol(symbol) ]
Since
v6.0.0
(string
| symbol
)[]
▸ on(event
, listener
): NIMUser
Name | Type |
---|---|
event |
"specialRelationChange" |
listener |
(result : SpecialRelationshipChangeEvent ) => void
|
▸ on(event
, listener
): NIMUser
Name | Type |
---|---|
event |
"userNameCardChange" |
listener |
(result : UserNameCard []) => void
|
▸ once(event
, listener
): NIMUser
Name | Type |
---|---|
event |
"specialRelationChange" |
listener |
(result : SpecialRelationshipChangeEvent ) => void
|
▸ once(event
, listener
): NIMUser
Name | Type |
---|---|
event |
"userNameCardChange" |
listener |
(result : UserNameCard []) => void
|
▸ initEventHandlers(): void
注册全局回调
void
▸ setBlack(accid
, setBlack
, cb
, jsonExtension
): boolean
设置、取消设置黑名单
Note
200:成功 419:黑名单数量超过上限
Name | Type | Description |
---|---|---|
accid |
string |
好友id |
setBlack |
boolean |
- |
cb |
SetRelationCallback |
|
jsonExtension |
string |
json扩展参数(备用,目前不需要) |
boolean
boolean 检查参数如果不符合要求则返回失败
▸ setMute(accid
, set_mute
, cb
, jsonExtension
): boolean
设置、取消设置静音名单
Note
200:成功 419:静音列表数量超过上限
Name | Type | Description |
---|---|---|
accid |
string |
好友id |
set_mute |
boolean |
取消或设置 |
cb |
SetRelationCallback |
|
jsonExtension |
string |
json扩展参数(备用,目前不需要) |
boolean
boolean 检查参数如果不符合要求则返回失败
▸ getMutelist(cb
, jsonExtension
): void
获得静音名单列表
Note
200:成功
Name | Type | Description |
---|---|---|
cb |
GetSpecialListCallback |
|
jsonExtension |
string |
json扩展参数(备用,目前不需要) |
void
boolean 检查参数如果不符合要求则返回失败
▸ getBlacklist(cb
, jsonExtension
): void
获得黑名单名单
Name | Type | Description |
---|---|---|
cb |
GetSpecialListCallback |
|
jsonExtension |
string |
json扩展参数(备用,目前不需要) |
void
void 无返回值
▸ getUserNameCard(accids
, cb
, jsonExtension
): boolean
获取本地的指定帐号的用户名片
Note
200:成功 414:参数错误 20000:还未初始化或初始化未正常完成 20001:还未登陆或登录未完成
Name | Type | Description |
---|---|---|
accids |
string [] |
|
cb |
GetUserNameCardCallback |
操作结果回调 |
jsonExtension |
string |
json扩展参数(备用,目前不需要) |
boolean
void 无返回值
▸ getUserNameCardOnline(accids
, cb
, jsonExtension
): boolean
在线查询指定帐号的用户名片
Note
200:成功 414:参数错误 20000:还未初始化或初始化未正常完成 20001:还未登陆或登录未完成
Name | Type | Description |
---|---|---|
accids |
string [] |
|
cb |
GetUserNameCardCallback |
操作结果回调 |
jsonExtension |
string |
json扩展参数(备用,目前不需要) |
boolean
boolean 检查参数如果不符合要求则返回失败
▸ updateMyUserNameCard(nameCard
, cb
, jsonExtension
): boolean
更新自己的用户名片
Note
200:成功 400:非法参数
Name | Type | Description |
---|---|---|
nameCard |
UserNameCard |
- |
cb |
UpdateMyUserNameCardCallback |
操作结果回调 |
jsonExtension |
string |
json扩展参数(备用,目前不需要) |
boolean
boolean 检查参数如果不符合要求则返回失败
▸ queryUserListByKeyword(keyword
, cb
, jsonExtension
): boolean
获取本地的指定帐号的用户名片
Name | Type | Description |
---|---|---|
keyword |
string |
要查询的关键字 |
cb |
GetUserNameCardCallback |
操作结果回调 |
jsonExtension |
string |
json扩展参数(备用,目前不需要) |
boolean
boolean 检查参数如果不符合要求则返回失败
▸ updatePushToken(cerName
, token
, type
): void
更新推送证书
Name | Type | Description |
---|---|---|
cerName |
string |
- |
token |
string |
设备token |
type |
NINPushType |
1: pushkit (仅iOS) 其他 apns 默认填0 |
void
void 无返回值
▪ Static
Readonly
errorMonitor: typeof errorMonitor
This symbol shall be used to install a listener for only monitoring 'error'
events. Listeners installed using this symbol are called before the regular
'error'
listeners are called.
Installing a listener using this symbol does not change the behavior once an
'error'
event is emitted, therefore the process will still crash if no
regular 'error'
listener is installed.
node_modules/@types/node/events.d.ts:272
▪ Static
Readonly
captureRejectionSymbol: typeof captureRejectionSymbol
node_modules/@types/node/events.d.ts:273
▪ Static
captureRejections: boolean
Sets or gets the default captureRejection value for all emitters.
node_modules/@types/node/events.d.ts:278
▪ Static
defaultMaxListeners: number
node_modules/@types/node/events.d.ts:279
• user: NIMUserAPI
• new NIMUser()
- chatroom/chatroom
- chatroom_def/chatroom_def
- nim/client
- nim/data_sync
- nim/friend
- nim/global
- nim/msglog
- nim/nos
- nim/online_session
- nim/pass_through_proxy
- nim/plugin
- nim/session
- nim/subscribe_event
- nim/super_team
- nim/sysmsg
- nim/talk
- nim/talkex
- nim/team
- nim/tool
- nim/user
- nim_def/client_def
- nim_def/data_sync_def
- nim_def/doc_trans_def
- nim_def/friend_def
- nim_def/global_def
- nim_def/msglog_def
- nim_def/nos_def
- nim_def/online_session_def
- nim_def/pass_through_proxy_def
- nim_def/plugin_def
- nim_def/session_def
- nim_def/subscribe_event_def
- nim_def/super_team_def
- nim_def/sysmsg_def
- nim_def/talk_def
- nim_def/talkex_def
- nim_def/team_def
- nim_def/tool_def
- nim_def/user_def
- node-nim
- qchat/attachment
- qchat/channel
- qchat/channel_category
- qchat/instance
- qchat/message
- qchat/role
- qchat/server
- qchat/system_notification
- qchat_def/attachment_def
- qchat_def/channel_def
- qchat_def/instance_def
- qchat_def/message_def
- qchat_def/public_def
- qchat_def/role_def
- qchat_def/server_def
- qchat_def/system_notification_def