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ambiten / core / ManualTransactionSession

Interface: ManualTransactionSession ​

Defined in: packages/core/src/context/helpers/transactionSession.ts:3

Extends ​

  • ClientSession

Properties ​

clientOptions ​

clientOptions: MongoOptions

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:2356

Inherited from ​

ClientSession.clientOptions

clusterTime? ​

optional clusterTime?: ClusterTime

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:2360

Inherited from ​

ClientSession.clusterTime

defaultTransactionOptions ​

defaultTransactionOptions: TransactionOptions

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:2364

Inherited from ​

ClientSession.defaultTransactionOptions

explicit ​

explicit: boolean

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:2362

Inherited from ​

ClientSession.explicit

hasEnded ​

hasEnded: boolean

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:2355

Inherited from ​

ClientSession.hasEnded

operationTime? ​

optional operationTime?: Timestamp

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:2361

Inherited from ​

ClientSession.operationTime

snapshotEnabled ​

readonly snapshotEnabled: boolean

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:2368

Inherited from ​

ClientSession.snapshotEnabled

supports ​

supports: object

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:2357

causalConsistency ​

causalConsistency: boolean

Inherited from ​

ClientSession.supports

timeoutMS? ​

optional timeoutMS?: number

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:2377

Experimental

Specifies the time an operation in a given ClientSession will run until it throws a timeout error

Inherited from ​

ClientSession.timeoutMS

transaction ​

transaction: Transaction

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:2366

Deprecated ​

  • Will be made internal in the next major release

Inherited from ​

ClientSession.transaction

Accessors ​

id ​

Get Signature ​

get id(): ServerSessionId | undefined

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:2381

The server id associated with this session

Returns ​

ServerSessionId | undefined

Inherited from ​

ClientSession.id

isPinned ​

Get Signature ​

get isPinned(): boolean

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:2386

Returns ​

boolean

Inherited from ​

ClientSession.isPinned

loadBalanced ​

Get Signature ​

get loadBalanced(): boolean

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:2383

Returns ​

boolean

Inherited from ​

ClientSession.loadBalanced

serverSession ​

Get Signature ​

get serverSession(): ServerSession

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:2382

Returns ​

ServerSession

Inherited from ​

ClientSession.serverSession

Methods ​

[captureRejectionSymbol]()? ​

optional [captureRejectionSymbol]<K>(error, event, ...args): void

Defined in: node_modules/.pnpm/@types+node@22.19.19/node_modules/@types/node/events.d.ts:103

Type Parameters ​

K ​

K

Parameters ​

error ​

Error

event ​

string | symbol

args ​

...AnyRest

Returns ​

void

Inherited from ​

ClientSession.[captureRejectionSymbol]

abortTransaction() ​

abortTransaction(): Promise<void>

Defined in: packages/core/src/context/helpers/transactionSession.ts:6

Aborts the currently active transaction in this session.

Returns ​

Promise<void>

Overrides ​

ClientSession.abortTransaction

addListener() ​

Call Signature ​

addListener<EventKey>(event, listener): this

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8775

Alias for emitter.on(eventName, listener).

Type Parameters ​
EventKey ​

EventKey extends "ended"

Parameters ​
event ​

EventKey

listener ​

ClientSessionEvents[EventKey]

Returns ​

this

Since ​

v0.1.26

Inherited from ​

ClientSession.addListener

Call Signature ​

addListener(event, listener): this

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8776

Alias for emitter.on(eventName, listener).

Parameters ​
event ​

CommonEvents

listener ​

(eventName, listener) => void

Returns ​

this

Since ​

v0.1.26

Inherited from ​

ClientSession.addListener

Call Signature ​

addListener(event, listener): this

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8777

Alias for emitter.on(eventName, listener).

Parameters ​
event ​

string | symbol

listener ​

GenericListener

Returns ​

this

Since ​

v0.1.26

Inherited from ​

ClientSession.addListener

advanceClusterTime() ​

advanceClusterTime(clusterTime): void

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:2409

Advances the clusterTime for a ClientSession to the provided clusterTime of another ClientSession

Parameters ​

clusterTime ​

ClusterTime

the $clusterTime returned by the server from another session in the form of a document containing the BSON.Timestamp clusterTime and signature

Returns ​

void

Inherited from ​

ClientSession.advanceClusterTime

advanceOperationTime() ​

advanceOperationTime(operationTime): void

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:2403

Advances the operationTime for a ClientSession.

Parameters ​

operationTime ​

Timestamp

the BSON.Timestamp of the operation type it is desired to advance to

Returns ​

void

Inherited from ​

ClientSession.advanceOperationTime

commitTransaction() ​

commitTransaction(): Promise<void>

Defined in: packages/core/src/context/helpers/transactionSession.ts:5

Commits the currently active transaction in this session.

Returns ​

Promise<void>

Overrides ​

ClientSession.commitTransaction

emit() ​

emit<EventKey>(event, ...args): boolean

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8793

Synchronously calls each of the listeners registered for the event named eventName, in the order they were registered, passing the supplied arguments to each.

Returns true if the event had listeners, false otherwise.

js
import { EventEmitter } from 'node: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

Type Parameters ​

EventKey ​

EventKey extends "ended"

Parameters ​

event ​

symbol | EventKey

args ​

...Parameters<ClientSessionEvents[EventKey]>

Returns ​

boolean

Since ​

v0.1.26

Inherited from ​

ClientSession.emit

endSession() ​

endSession(): Promise<void>

Defined in: packages/core/src/context/helpers/transactionSession.ts:7

Frees any client-side resources held by the current session. If a session is in a transaction, the transaction is aborted.

Does not end the session on the server.

Returns ​

Promise<void>

Overrides ​

ClientSession.endSession

equals() ​

equals(session): boolean

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:2415

Used to determine if this session equals another

Parameters ​

session ​

ClientSession

The session to compare to

Returns ​

boolean

Inherited from ​

ClientSession.equals

eventNames() ​

eventNames(): string[]

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8801

Returns an array listing the events for which the emitter has registered listeners. The values in the array are strings or Symbols.

js
import { EventEmitter } from 'node: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) ]

Returns ​

string[]

Since ​

v6.0.0

Inherited from ​

ClientSession.eventNames

getMaxListeners() ​

getMaxListeners(): number

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8802

Returns the current max listener value for the EventEmitter which is either set by emitter.setMaxListeners(n) or defaults to EventEmitter.defaultMaxListeners.

Returns ​

number

Since ​

v1.0.0

Inherited from ​

ClientSession.getMaxListeners

incrementTransactionNumber() ​

incrementTransactionNumber(): void

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:2424

Increment the transaction number on the internal ServerSession

Returns ​

void

Inherited from ​

ClientSession.incrementTransactionNumber

inTransaction() ​

inTransaction(): boolean

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:2426

Returns ​

boolean

whether this session is currently in a transaction or not

Inherited from ​

ClientSession.inTransaction

listenerCount() ​

listenerCount<EventKey>(type): number

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8794

Returns the number of listeners listening for the event named eventName. If listener is provided, it will return how many times the listener is found in the list of the listeners of the event.

Type Parameters ​

EventKey ​

EventKey extends "ended"

Parameters ​

type ​

string | symbol | EventKey

Returns ​

number

Since ​

v3.2.0

Inherited from ​

ClientSession.listenerCount

listeners() ​

listeners<EventKey>(event): ClientSessionEvents[EventKey][]

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8791

Returns a copy of the array of listeners for the event named eventName.

js
server.on('connection', (stream) => {
  console.log('someone connected!');
});
console.log(util.inspect(server.listeners('connection')));
// Prints: [ [Function] ]

Type Parameters ​

EventKey ​

EventKey extends "ended"

Parameters ​

event ​

string | symbol | EventKey

Returns ​

ClientSessionEvents[EventKey][]

Since ​

v0.1.26

Inherited from ​

ClientSession.listeners

off() ​

Call Signature ​

off<EventKey>(event, listener): this

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8787

Alias for emitter.removeListener().

Type Parameters ​
EventKey ​

EventKey extends "ended"

Parameters ​
event ​

EventKey

listener ​

ClientSessionEvents[EventKey]

Returns ​

this

Since ​

v10.0.0

Inherited from ​

ClientSession.off

Call Signature ​

off(event, listener): this

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8788

Alias for emitter.removeListener().

Parameters ​
event ​

CommonEvents

listener ​

(eventName, listener) => void

Returns ​

this

Since ​

v10.0.0

Inherited from ​

ClientSession.off

Call Signature ​

off(event, listener): this

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8789

Alias for emitter.removeListener().

Parameters ​
event ​

string | symbol

listener ​

GenericListener

Returns ​

this

Since ​

v10.0.0

Inherited from ​

ClientSession.off

on() ​

Call Signature ​

on<EventKey>(event, listener): this

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8778

Adds the listener function to the end 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.

js
server.on('connection', (stream) => {
  console.log('someone connected!');
});

Returns a reference to the EventEmitter, so that calls can be chained.

By default, event listeners are invoked in the order they are added. The emitter.prependListener() method can be used as an alternative to add the event listener to the beginning of the listeners array.

js
import { EventEmitter } from 'node:events';
const myEE = new EventEmitter();
myEE.on('foo', () => console.log('a'));
myEE.prependListener('foo', () => console.log('b'));
myEE.emit('foo');
// Prints:
//   b
//   a
Type Parameters ​
EventKey ​

EventKey extends "ended"

Parameters ​
event ​

EventKey

listener ​

ClientSessionEvents[EventKey]

The callback function

Returns ​

this

Since ​

v0.1.101

Inherited from ​

ClientSession.on

Call Signature ​

on(event, listener): this

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8779

Adds the listener function to the end 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.

js
server.on('connection', (stream) => {
  console.log('someone connected!');
});

Returns a reference to the EventEmitter, so that calls can be chained.

By default, event listeners are invoked in the order they are added. The emitter.prependListener() method can be used as an alternative to add the event listener to the beginning of the listeners array.

js
import { EventEmitter } from 'node:events';
const myEE = new EventEmitter();
myEE.on('foo', () => console.log('a'));
myEE.prependListener('foo', () => console.log('b'));
myEE.emit('foo');
// Prints:
//   b
//   a
Parameters ​
event ​

CommonEvents

listener ​

(eventName, listener) => void

The callback function

Returns ​

this

Since ​

v0.1.101

Inherited from ​

ClientSession.on

Call Signature ​

on(event, listener): this

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8780

Adds the listener function to the end 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.

js
server.on('connection', (stream) => {
  console.log('someone connected!');
});

Returns a reference to the EventEmitter, so that calls can be chained.

By default, event listeners are invoked in the order they are added. The emitter.prependListener() method can be used as an alternative to add the event listener to the beginning of the listeners array.

js
import { EventEmitter } from 'node:events';
const myEE = new EventEmitter();
myEE.on('foo', () => console.log('a'));
myEE.prependListener('foo', () => console.log('b'));
myEE.emit('foo');
// Prints:
//   b
//   a
Parameters ​
event ​

string | symbol

listener ​

GenericListener

The callback function

Returns ​

this

Since ​

v0.1.101

Inherited from ​

ClientSession.on

once() ​

Call Signature ​

once<EventKey>(event, listener): this

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8781

Adds a one-time listener function for the event named eventName. The next time eventName is triggered, this listener is removed and then invoked.

js
server.once('connection', (stream) => {
  console.log('Ah, we have our first user!');
});

Returns a reference to the EventEmitter, so that calls can be chained.

By default, event listeners are invoked in the order they are added. The emitter.prependOnceListener() method can be used as an alternative to add the event listener to the beginning of the listeners array.

js
import { EventEmitter } from 'node:events';
const myEE = new EventEmitter();
myEE.once('foo', () => console.log('a'));
myEE.prependOnceListener('foo', () => console.log('b'));
myEE.emit('foo');
// Prints:
//   b
//   a
Type Parameters ​
EventKey ​

EventKey extends "ended"

Parameters ​
event ​

EventKey

listener ​

ClientSessionEvents[EventKey]

The callback function

Returns ​

this

Since ​

v0.3.0

Inherited from ​

ClientSession.once

Call Signature ​

once(event, listener): this

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8782

Adds a one-time listener function for the event named eventName. The next time eventName is triggered, this listener is removed and then invoked.

js
server.once('connection', (stream) => {
  console.log('Ah, we have our first user!');
});

Returns a reference to the EventEmitter, so that calls can be chained.

By default, event listeners are invoked in the order they are added. The emitter.prependOnceListener() method can be used as an alternative to add the event listener to the beginning of the listeners array.

js
import { EventEmitter } from 'node:events';
const myEE = new EventEmitter();
myEE.once('foo', () => console.log('a'));
myEE.prependOnceListener('foo', () => console.log('b'));
myEE.emit('foo');
// Prints:
//   b
//   a
Parameters ​
event ​

CommonEvents

listener ​

(eventName, listener) => void

The callback function

Returns ​

this

Since ​

v0.3.0

Inherited from ​

ClientSession.once

Call Signature ​

once(event, listener): this

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8783

Adds a one-time listener function for the event named eventName. The next time eventName is triggered, this listener is removed and then invoked.

js
server.once('connection', (stream) => {
  console.log('Ah, we have our first user!');
});

Returns a reference to the EventEmitter, so that calls can be chained.

By default, event listeners are invoked in the order they are added. The emitter.prependOnceListener() method can be used as an alternative to add the event listener to the beginning of the listeners array.

js
import { EventEmitter } from 'node:events';
const myEE = new EventEmitter();
myEE.once('foo', () => console.log('a'));
myEE.prependOnceListener('foo', () => console.log('b'));
myEE.emit('foo');
// Prints:
//   b
//   a
Parameters ​
event ​

string | symbol

listener ​

GenericListener

The callback function

Returns ​

this

Since ​

v0.3.0

Inherited from ​

ClientSession.once

prependListener() ​

Call Signature ​

prependListener<EventKey>(event, listener): this

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8795

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.

js
server.prependListener('connection', (stream) => {
  console.log('someone connected!');
});

Returns a reference to the EventEmitter, so that calls can be chained.

Type Parameters ​
EventKey ​

EventKey extends "ended"

Parameters ​
event ​

EventKey

listener ​

ClientSessionEvents[EventKey]

The callback function

Returns ​

this

Since ​

v6.0.0

Inherited from ​

ClientSession.prependListener

Call Signature ​

prependListener(event, listener): this

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8796

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.

js
server.prependListener('connection', (stream) => {
  console.log('someone connected!');
});

Returns a reference to the EventEmitter, so that calls can be chained.

Parameters ​
event ​

CommonEvents

listener ​

(eventName, listener) => void

The callback function

Returns ​

this

Since ​

v6.0.0

Inherited from ​

ClientSession.prependListener

Call Signature ​

prependListener(event, listener): this

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8797

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.

js
server.prependListener('connection', (stream) => {
  console.log('someone connected!');
});

Returns a reference to the EventEmitter, so that calls can be chained.

Parameters ​
event ​

string | symbol

listener ​

GenericListener

The callback function

Returns ​

this

Since ​

v6.0.0

Inherited from ​

ClientSession.prependListener

prependOnceListener() ​

Call Signature ​

prependOnceListener<EventKey>(event, listener): this

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8798

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.

js
server.prependOnceListener('connection', (stream) => {
  console.log('Ah, we have our first user!');
});

Returns a reference to the EventEmitter, so that calls can be chained.

Type Parameters ​
EventKey ​

EventKey extends "ended"

Parameters ​
event ​

EventKey

listener ​

ClientSessionEvents[EventKey]

The callback function

Returns ​

this

Since ​

v6.0.0

Inherited from ​

ClientSession.prependOnceListener

Call Signature ​

prependOnceListener(event, listener): this

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8799

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.

js
server.prependOnceListener('connection', (stream) => {
  console.log('Ah, we have our first user!');
});

Returns a reference to the EventEmitter, so that calls can be chained.

Parameters ​
event ​

CommonEvents

listener ​

(eventName, listener) => void

The callback function

Returns ​

this

Since ​

v6.0.0

Inherited from ​

ClientSession.prependOnceListener

Call Signature ​

prependOnceListener(event, listener): this

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8800

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.

js
server.prependOnceListener('connection', (stream) => {
  console.log('Ah, we have our first user!');
});

Returns a reference to the EventEmitter, so that calls can be chained.

Parameters ​
event ​

string | symbol

listener ​

GenericListener

The callback function

Returns ​

this

Since ​

v6.0.0

Inherited from ​

ClientSession.prependOnceListener

rawListeners() ​

rawListeners<EventKey>(event): ClientSessionEvents[EventKey][]

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8792

Returns a copy of the array of listeners for the event named eventName, including any wrappers (such as those created by .once()).

js
import { EventEmitter } from 'node:events';
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');

Type Parameters ​

EventKey ​

EventKey extends "ended"

Parameters ​

event ​

string | symbol | EventKey

Returns ​

ClientSessionEvents[EventKey][]

Since ​

v9.4.0

Inherited from ​

ClientSession.rawListeners

removeAllListeners() ​

removeAllListeners<EventKey>(event?): this

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8790

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.

Type Parameters ​

EventKey ​

EventKey extends "ended"

Parameters ​

event? ​

string | symbol | EventKey

Returns ​

this

Since ​

v0.1.26

Inherited from ​

ClientSession.removeAllListeners

removeListener() ​

Call Signature ​

removeListener<EventKey>(event, listener): this

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8784

Removes the specified listener from the listener array for the event named eventName.

js
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 any removeListener() or removeAllListeners() calls after emitting and before the last listener finishes execution will not remove them fromemit() in progress. Subsequent events behave as expected.

js
import { EventEmitter } from 'node:events';
class MyEmitter extends EventEmitter {}
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:

js
import { EventEmitter } from 'node:events';
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.

Type Parameters ​
EventKey ​

EventKey extends "ended"

Parameters ​
event ​

EventKey

listener ​

ClientSessionEvents[EventKey]

Returns ​

this

Since ​

v0.1.26

Inherited from ​

ClientSession.removeListener

Call Signature ​

removeListener(event, listener): this

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8785

Removes the specified listener from the listener array for the event named eventName.

js
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 any removeListener() or removeAllListeners() calls after emitting and before the last listener finishes execution will not remove them fromemit() in progress. Subsequent events behave as expected.

js
import { EventEmitter } from 'node:events';
class MyEmitter extends EventEmitter {}
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:

js
import { EventEmitter } from 'node:events';
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.

Parameters ​
event ​

CommonEvents

listener ​

(eventName, listener) => void

Returns ​

this

Since ​

v0.1.26

Inherited from ​

ClientSession.removeListener

Call Signature ​

removeListener(event, listener): this

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8786

Removes the specified listener from the listener array for the event named eventName.

js
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 any removeListener() or removeAllListeners() calls after emitting and before the last listener finishes execution will not remove them fromemit() in progress. Subsequent events behave as expected.

js
import { EventEmitter } from 'node:events';
class MyEmitter extends EventEmitter {}
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:

js
import { EventEmitter } from 'node:events';
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.

Parameters ​
event ​

string | symbol

listener ​

GenericListener

Returns ​

this

Since ​

v0.1.26

Inherited from ​

ClientSession.removeListener

setMaxListeners() ​

setMaxListeners(n): this

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:8803

By default EventEmitters 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 to Infinity (or 0) to indicate an unlimited number of listeners.

Returns a reference to the EventEmitter, so that calls can be chained.

Parameters ​

n ​

number

Returns ​

this

Since ​

v0.3.5

Inherited from ​

ClientSession.setMaxListeners

startTransaction() ​

startTransaction(): void

Defined in: packages/core/src/context/helpers/transactionSession.ts:4

Starts a new transaction with the given options.

Returns ​

void

Remarks ​

IMPORTANT: Running operations in parallel is not supported during a transaction. The use of Promise.all, Promise.allSettled, Promise.race, etc to parallelize operations inside a transaction is undefined behaviour.

Overrides ​

ClientSession.startTransaction

toBSON() ​

toBSON(): never

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:2458

This is here to ensure that ClientSession is never serialized to BSON.

Returns ​

never

Inherited from ​

ClientSession.toBSON

withTransaction() ​

withTransaction<T>(fn, options?): Promise<T>

Defined in: node_modules/.pnpm/mongodb@6.21.0/node_modules/mongodb/mongodb.d.ts:2494

Starts a transaction and runs a provided function, ensuring the commitTransaction is always attempted when all operations run in the function have completed.

IMPORTANT: This method requires the function passed in to return a Promise. That promise must be made by await-ing all operations in such a way that rejections are propagated to the returned promise.

IMPORTANT: Running operations in parallel is not supported during a transaction. The use of Promise.all, Promise.allSettled, Promise.race, etc to parallelize operations inside a transaction is undefined behaviour.

IMPORTANT: When running an operation inside a withTransaction callback, if it is not provided the explicit session in its options, it will not be part of the transaction and it will not respect timeoutMS.

Type Parameters ​

T ​

T = any

Parameters ​

fn ​

WithTransactionCallback<T>

callback to run within a transaction

options? ​

TransactionOptions & object

optional settings for the transaction

Returns ​

Promise<T>

A raw command response or undefined

Remarks ​

  • If all operations successfully complete and the commitTransaction operation is successful, then the provided function will return the result of the provided function.
  • If the transaction is unable to complete or an error is thrown from within the provided function, then the provided function will throw an error.
    • If the transaction is manually aborted within the provided function it will not throw.
  • If the driver needs to attempt to retry the operations, the provided function may be called multiple times.

Checkout a descriptive example here:

See ​

https://www.mongodb.com/blog/post/quick-start-nodejs--mongodb--how-to-implement-transactions

If a command inside withTransaction fails:

  • It may cause the transaction on the server to be aborted.
  • This situation is normally handled transparently by the driver.
  • However, if the application catches such an error and does not rethrow it, the driver will not be able to determine whether the transaction was aborted or not.
  • The driver will then retry the transaction indefinitely.

To avoid this situation, the application must not silently handle errors within the provided function. If the application needs to handle errors within, it must await all operations such that if an operation is rejected it becomes the rejection of the callback function passed into withTransaction.

Inherited from ​

ClientSession.withTransaction

Context-aware execution infrastructure for multi-tenant systems.

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