Node.js v24.18.0 documentation
- Node.js v24.18.0
- Other versions
- Options
Table of contents
- About this documentation
- Usage and example
- Assert
- Strict assertion mode
- Legacy assertion mode
- Class:
assert.AssertionError - Class:
assert.Assert - Class:
assert.CallTracker assert(value[, message])assert.deepEqual(actual, expected[, message])assert.deepStrictEqual(actual, expected[, message])assert.doesNotMatch(string, regexp[, message])assert.doesNotReject(asyncFn[, error][, message])assert.doesNotThrow(fn[, error][, message])assert.equal(actual, expected[, message])assert.fail([message])assert.fail(actual, expected[, message[, operator[, stackStartFn]]])assert.ifError(value)assert.match(string, regexp[, message])assert.notDeepEqual(actual, expected[, message])assert.notDeepStrictEqual(actual, expected[, message])assert.notEqual(actual, expected[, message])assert.notStrictEqual(actual, expected[, message])assert.ok(value[, message])assert.rejects(asyncFn[, error][, message])assert.strictEqual(actual, expected[, message])assert.throws(fn[, error][, message])assert.partialDeepStrictEqual(actual, expected[, message])
- Asynchronous context tracking
- Introduction
- Class:
AsyncLocalStoragenew AsyncLocalStorage([options])- Static method:
AsyncLocalStorage.bind(fn) - Static method:
AsyncLocalStorage.snapshot() asyncLocalStorage.disable()asyncLocalStorage.getStore()asyncLocalStorage.enterWith(store)asyncLocalStorage.nameasyncLocalStorage.run(store, callback[, ...args])asyncLocalStorage.exit(callback[, ...args])- Usage with
async/await - Troubleshooting: Context loss
- Class:
AsyncResourcenew AsyncResource(type[, options])- Static method:
AsyncResource.bind(fn[, type[, thisArg]]) asyncResource.bind(fn[, thisArg])asyncResource.runInAsyncScope(fn[, thisArg, ...args])asyncResource.emitDestroy()asyncResource.asyncId()asyncResource.triggerAsyncId()- Using
AsyncResourcefor aWorkerthread pool - Integrating
AsyncResourcewithEventEmitter
- Async hooks
- Terminology
- Overview
async_hooks.createHook(options)- Class:
AsyncHook - Promise execution tracking
- JavaScript embedder API
- Class:
AsyncLocalStorage
- Buffer
- Buffers and character encodings
- Buffers and TypedArrays
- Buffers and iteration
- Class:
Blob - Class:
Buffer- Static method:
Buffer.alloc(size[, fill[, encoding]]) - Static method:
Buffer.allocUnsafe(size) - Static method:
Buffer.allocUnsafeSlow(size) - Static method:
Buffer.byteLength(string[, encoding]) - Static method:
Buffer.compare(buf1, buf2) - Static method:
Buffer.concat(list[, totalLength]) - Static method:
Buffer.copyBytesFrom(view[, offset[, length]]) - Static method:
Buffer.from(array) - Static method:
Buffer.from(arrayBuffer[, byteOffset[, length]]) - Static method:
Buffer.from(buffer) - Static method:
Buffer.from(object[, offsetOrEncoding[, length]]) - Static method:
Buffer.from(string[, encoding]) - Static method:
Buffer.isBuffer(obj) - Static method:
Buffer.isEncoding(encoding) Buffer.poolSizebuf[index]buf.bufferbuf.byteOffsetbuf.compare(target[, targetStart[, targetEnd[, sourceStart[, sourceEnd]]]])buf.copy(target[, targetStart[, sourceStart[, sourceEnd]]])buf.entries()buf.equals(otherBuffer)buf.fill(value[, offset[, end]][, encoding])buf.includes(value[, byteOffset][, encoding])buf.indexOf(value[, byteOffset][, encoding])buf.keys()buf.lastIndexOf(value[, byteOffset][, encoding])buf.lengthbuf.parentbuf.readBigInt64BE([offset])buf.readBigInt64LE([offset])buf.readBigUInt64BE([offset])buf.readBigUInt64LE([offset])buf.readDoubleBE([offset])buf.readDoubleLE([offset])buf.readFloatBE([offset])buf.readFloatLE([offset])buf.readInt8([offset])buf.readInt16BE([offset])buf.readInt16LE([offset])buf.readInt32BE([offset])buf.readInt32LE([offset])buf.readIntBE(offset, byteLength)buf.readIntLE(offset, byteLength)buf.readUInt8([offset])buf.readUInt16BE([offset])buf.readUInt16LE([offset])buf.readUInt32BE([offset])buf.readUInt32LE([offset])buf.readUIntBE(offset, byteLength)buf.readUIntLE(offset, byteLength)buf.subarray([start[, end]])buf.slice([start[, end]])buf.swap16()buf.swap32()buf.swap64()buf.toJSON()buf.toString([encoding[, start[, end]]])buf.values()buf.write(string[, offset[, length]][, encoding])buf.writeBigInt64BE(value[, offset])buf.writeBigInt64LE(value[, offset])buf.writeBigUInt64BE(value[, offset])buf.writeBigUInt64LE(value[, offset])buf.writeDoubleBE(value[, offset])buf.writeDoubleLE(value[, offset])buf.writeFloatBE(value[, offset])buf.writeFloatLE(value[, offset])buf.writeInt8(value[, offset])buf.writeInt16BE(value[, offset])buf.writeInt16LE(value[, offset])buf.writeInt32BE(value[, offset])buf.writeInt32LE(value[, offset])buf.writeIntBE(value, offset, byteLength)buf.writeIntLE(value, offset, byteLength)buf.writeUInt8(value[, offset])buf.writeUInt16BE(value[, offset])buf.writeUInt16LE(value[, offset])buf.writeUInt32BE(value[, offset])buf.writeUInt32LE(value[, offset])buf.writeUIntBE(value, offset, byteLength)buf.writeUIntLE(value, offset, byteLength)new Buffer(array)new Buffer(arrayBuffer[, byteOffset[, length]])new Buffer(buffer)new Buffer(size)new Buffer(string[, encoding])
- Static method:
- Class:
File node:buffermodule APIsBuffer.from(),Buffer.alloc(), andBuffer.allocUnsafe()
- C++ addons
- Node-API
- Writing addons in various programming languages
- Implications of ABI stability
- Building
- Usage
- Node-API version matrix
- Environment life cycle APIs
- Basic Node-API data types
- Error handling
- Object lifetime management
- Module registration
- Working with JavaScript values
- Enum types
- Object creation functions
napi_create_arraynapi_create_array_with_lengthnapi_create_arraybuffernapi_create_buffernapi_create_buffer_copynapi_create_datenapi_create_externalnapi_create_external_arraybuffernode_api_create_external_sharedarraybuffernapi_create_external_buffernapi_create_objectnode_api_create_object_with_propertiesnapi_create_symbolnode_api_symbol_fornapi_create_typedarraynode_api_create_buffer_from_arraybuffernapi_create_dataview
- Functions to convert from C types to Node-API
napi_create_int32napi_create_uint32napi_create_int64napi_create_doublenapi_create_bigint_int64napi_create_bigint_uint64napi_create_bigint_wordsnapi_create_string_latin1node_api_create_external_string_latin1napi_create_string_utf16node_api_create_external_string_utf16napi_create_string_utf8
- Functions to create optimized property keys
- Functions to convert from Node-API to C types
napi_get_array_lengthnapi_get_arraybuffer_infonapi_get_buffer_infonapi_get_prototypenapi_get_typedarray_infonapi_get_dataview_infonapi_get_date_valuenapi_get_value_boolnapi_get_value_doublenapi_get_value_bigint_int64napi_get_value_bigint_uint64napi_get_value_bigint_wordsnapi_get_value_externalnapi_get_value_int32napi_get_value_int64napi_get_value_string_latin1napi_get_value_string_utf8napi_get_value_string_utf16napi_get_value_uint32
- Functions to get global instances
- Working with JavaScript values and abstract operations
napi_coerce_to_boolnapi_coerce_to_numbernapi_coerce_to_objectnapi_coerce_to_stringnapi_typeofnapi_instanceofnapi_is_arraynapi_is_arraybuffernapi_is_buffernapi_is_datenapi_is_errornapi_is_typedarraynapi_is_dataviewnapi_strict_equalsnapi_detach_arraybuffernapi_is_detached_arraybuffernode_api_is_sharedarraybuffernode_api_create_sharedarraybuffer
- Working with JavaScript properties
- Structures
- Functions
napi_get_property_namesnapi_get_all_property_namesnapi_set_propertynapi_get_propertynapi_has_propertynapi_delete_propertynapi_has_own_propertynapi_set_named_propertynapi_get_named_propertynapi_has_named_propertynapi_set_elementnapi_get_elementnapi_has_elementnapi_delete_elementnapi_define_propertiesnapi_object_freezenapi_object_sealnode_api_set_prototype
- Working with JavaScript functions
- Object wrap
- Simple asynchronous operations
- Custom asynchronous operations
- Version management
- Memory management
- Promises
- Script execution
- libuv event loop
- Asynchronous thread-safe function calls
- Calling a thread-safe function
- Reference counting of thread-safe functions
- Deciding whether to keep the process running
napi_create_threadsafe_functionnapi_get_threadsafe_function_contextnapi_call_threadsafe_functionnapi_acquire_threadsafe_functionnapi_release_threadsafe_functionnapi_ref_threadsafe_functionnapi_unref_threadsafe_function
- Miscellaneous utilities
- C++ embedder API
- Child process
- Asynchronous process creation
- Synchronous process creation
- Class:
ChildProcess- Event:
'close' - Event:
'disconnect' - Event:
'error' - Event:
'exit' - Event:
'message' - Event:
'spawn' subprocess.channelsubprocess.connectedsubprocess.disconnect()subprocess.exitCodesubprocess.kill([signal])subprocess[Symbol.dispose]()subprocess.killedsubprocess.pidsubprocess.ref()subprocess.send(message[, sendHandle[, options]][, callback])subprocess.signalCodesubprocess.spawnargssubprocess.spawnfilesubprocess.stderrsubprocess.stdinsubprocess.stdiosubprocess.stdoutsubprocess.unref()
- Event:
maxBufferand Unicode- Shell requirements
- Default Windows shell
- Advanced serialization
- Cluster
- How it works
- Class:
Worker - Event:
'disconnect' - Event:
'exit' - Event:
'fork' - Event:
'listening' - Event:
'message' - Event:
'online' - Event:
'setup' cluster.disconnect([callback])cluster.fork([env])cluster.isMastercluster.isPrimarycluster.isWorkercluster.schedulingPolicycluster.settingscluster.setupMaster([settings])cluster.setupPrimary([settings])cluster.workercluster.workers
- Command-line API
- Synopsis
- Program entry point
- Options
-----abort-on-uncaught-exception--allow-addons--allow-child-process--allow-fs-read--allow-fs-write--allow-inspector--allow-wasi--allow-worker--build-snapshot--build-snapshot-config-c,--check--completion-bash-C condition,--conditions=condition--cpu-prof--cpu-prof-dir--cpu-prof-interval--cpu-prof-name--diagnostic-dir=directory--disable-proto=mode--disable-sigusr1--disable-warning=code-or-type--disable-wasm-trap-handler--disallow-code-generation-from-strings--dns-result-order=order--enable-fips--enable-network-family-autoselection--enable-source-maps--entry-url--env-file-if-exists=file--env-file=file-e,--eval "script"--experimental-addon-modules--experimental-config-file=config--experimental-default-config-file--experimental-eventsource--experimental-import-meta-resolve--experimental-inspector-network-resource--experimental-loader=module--experimental-network-inspection--experimental-print-required-tla--experimental-quic--experimental-sea-config--experimental-shadow-realm--experimental-storage-inspection--experimental-test-coverage--experimental-test-module-mocks--experimental-transform-types--experimental-vm-modules--experimental-wasi-unstable-preview1--experimental-webstorage--experimental-worker-inspection--expose-gc--force-context-aware--force-fips--force-node-api-uncaught-exceptions-policy--frozen-intrinsics--heap-prof--heap-prof-dir--heap-prof-interval--heap-prof-name--heapsnapshot-near-heap-limit=max_count--heapsnapshot-signal=signal-h,--help--icu-data-dir=file--import=module--input-type=type--insecure-http-parser--inspect-brk[=[host:]port]--inspect-port=[host:]port--inspect-publish-uid=stderr,http--inspect-wait[=[host:]port]--inspect[=[host:]port]-i,--interactive--jitless--localstorage-file=file--max-http-header-size=size--max-old-space-size-percentage=percentage--napi-modules--network-family-autoselection-attempt-timeout--no-addons--no-async-context-frame--no-deprecation--no-experimental-detect-module--no-experimental-global-navigator--no-experimental-repl-await--no-experimental-require-module--no-experimental-sqlite--no-experimental-websocket--no-extra-info-on-fatal-exception--no-force-async-hooks-checks--no-global-search-paths--no-network-family-autoselection--no-require-module--no-strip-types--no-warnings--node-memory-debug--openssl-config=file--openssl-legacy-provider--openssl-shared-config--pending-deprecation--permission--preserve-symlinks--preserve-symlinks-main-p,--print "script"--prof--prof-process--redirect-warnings=file--report-compact--report-dir=directory,report-directory=directory--report-exclude-env--report-exclude-network--report-filename=filename--report-on-fatalerror--report-on-signal--report-signal=signal--report-uncaught-exception-r,--require module--run--secure-heap-min=n--secure-heap=n--snapshot-blob=path--test--test-concurrency--test-coverage-branches=threshold--test-coverage-exclude--test-coverage-functions=threshold--test-coverage-include--test-coverage-lines=threshold--test-force-exit--test-global-setup=module--test-isolation=mode--test-name-pattern--test-only--test-random-seed--test-randomize--test-reporter--test-reporter-destination--test-rerun-failures--test-shard--test-skip-pattern--test-timeout--test-update-snapshots--throw-deprecation--title=title--tls-cipher-list=list--tls-keylog=file--tls-max-v1.2--tls-max-v1.3--tls-min-v1.0--tls-min-v1.1--tls-min-v1.2--tls-min-v1.3--trace-deprecation--trace-env--trace-env-js-stack--trace-env-native-stack--trace-event-categories--trace-event-file-pattern--trace-events-enabled--trace-exit--trace-require-module=mode--trace-sigint--trace-sync-io--trace-tls--trace-uncaught--trace-warnings--track-heap-objects--unhandled-rejections=mode--use-bundled-ca,--use-openssl-ca--use-env-proxy--use-largepages=mode--use-system-ca--v8-options--v8-pool-size=num-v,--version--watch--watch-kill-signal--watch-path--watch-preserve-output--zero-fill-buffers
- Environment variables
FORCE_COLOR=[1, 2, 3]NODE_COMPILE_CACHE=dirNODE_COMPILE_CACHE_PORTABLE=1NODE_DEBUG=module[,…]NODE_DEBUG_NATIVE=module[,…]NODE_DISABLE_COLORS=1NODE_DISABLE_COMPILE_CACHE=1NODE_EXTRA_CA_CERTS=fileNODE_ICU_DATA=fileNODE_NO_WARNINGS=1NODE_OPTIONS=options...NODE_PATH=path[:…]NODE_PENDING_DEPRECATION=1NODE_PENDING_PIPE_INSTANCES=instancesNODE_PRESERVE_SYMLINKS=1NODE_REDIRECT_WARNINGS=fileNODE_REPL_EXTERNAL_MODULE=fileNODE_REPL_HISTORY=fileNODE_SKIP_PLATFORM_CHECK=valueNODE_TEST_CONTEXT=valueNODE_TLS_REJECT_UNAUTHORIZED=valueNODE_USE_ENV_PROXY=1NODE_USE_SYSTEM_CA=1NODE_V8_COVERAGE=dirNO_COLOR=<any>OPENSSL_CONF=fileSSL_CERT_DIR=dirSSL_CERT_FILE=fileTZUV_THREADPOOL_SIZE=size
- Useful V8 options
--abort-on-uncaught-exception--disallow-code-generation-from-strings--enable-etw-stack-walking--expose-gc--harmony-shadow-realm--heap-snapshot-on-oom--interpreted-frames-native-stack--jitless--max-heap-size--max-old-space-size=SIZE(in MiB)--max-semi-space-size=SIZE(in MiB)--perf-basic-prof--perf-basic-prof-only-functions--perf-prof--perf-prof-unwinding-info--prof--security-revert--stack-trace-limit=limit
- Console
- Class:
Consolenew Console(stdout[, stderr][, ignoreErrors])new Console(options)console.assert(value[, ...message])console.clear()console.count([label])console.countReset([label])console.debug(data[, ...args])console.dir(obj[, options])console.dirxml(...data)console.error([data][, ...args])console.group([...label])console.groupCollapsed()console.groupEnd()console.info([data][, ...args])console.log([data][, ...args])console.table(tabularData[, properties])console.time([label])console.timeEnd([label])console.timeLog([label][, ...data])console.trace([message][, ...args])console.warn([data][, ...args])
- Inspector only methods
- Class:
- Crypto
- Determining if crypto support is unavailable
- Asymmetric key types
- Class:
Certificate - Class:
Cipheriv - Class:
Decipheriv - Class:
DiffieHellmandiffieHellman.computeSecret(otherPublicKey[, inputEncoding][, outputEncoding])diffieHellman.generateKeys([encoding])diffieHellman.getGenerator([encoding])diffieHellman.getPrime([encoding])diffieHellman.getPrivateKey([encoding])diffieHellman.getPublicKey([encoding])diffieHellman.setPrivateKey(privateKey[, encoding])diffieHellman.setPublicKey(publicKey[, encoding])diffieHellman.verifyError
- Class:
DiffieHellmanGroup - Class:
ECDH- Static method:
ECDH.convertKey(key, curve[, inputEncoding[, outputEncoding[, format]]]) ecdh.computeSecret(otherPublicKey[, inputEncoding][, outputEncoding])ecdh.generateKeys([encoding[, format]])ecdh.getPrivateKey([encoding])ecdh.getPublicKey([encoding][, format])ecdh.setPrivateKey(privateKey[, encoding])ecdh.setPublicKey(publicKey[, encoding])
- Static method:
- Class:
Hash - Class:
Hmac - Class:
KeyObject - Class:
Sign - Class:
Verify - Class:
X509Certificatenew X509Certificate(buffer)x509.cax509.checkEmail(email[, options])x509.checkHost(name[, options])x509.checkIP(ip)x509.checkIssued(otherCert)x509.checkPrivateKey(privateKey)x509.fingerprintx509.fingerprint256x509.fingerprint512x509.infoAccessx509.issuerx509.issuerCertificatex509.keyUsagex509.publicKeyx509.rawx509.serialNumberx509.subjectx509.subjectAltNamex509.toJSON()x509.toLegacyObject()x509.toString()x509.validFromx509.validFromDatex509.validTox509.validToDatex509.signatureAlgorithmx509.signatureAlgorithmOidx509.verify(publicKey)
node:cryptomodule methods and propertiescrypto.argon2(algorithm, parameters, callback)crypto.argon2Sync(algorithm, parameters)crypto.checkPrime(candidate[, options], callback)crypto.checkPrimeSync(candidate[, options])crypto.constantscrypto.createCipheriv(algorithm, key, iv[, options])crypto.createDecipheriv(algorithm, key, iv[, options])crypto.createDiffieHellman(prime[, primeEncoding][, generator][, generatorEncoding])crypto.createDiffieHellman(primeLength[, generator])crypto.createDiffieHellmanGroup(name)crypto.createECDH(curveName)crypto.createHash(algorithm[, options])crypto.createHmac(algorithm, key[, options])crypto.createPrivateKey(key)crypto.createPublicKey(key)crypto.createSecretKey(key[, encoding])crypto.createSign(algorithm[, options])crypto.createVerify(algorithm[, options])crypto.decapsulate(key, ciphertext[, callback])crypto.diffieHellman(options[, callback])crypto.encapsulate(key[, callback])crypto.fipscrypto.generateKey(type, options, callback)crypto.generateKeyPair(type, options, callback)crypto.generateKeyPairSync(type, options)crypto.generateKeySync(type, options)crypto.generatePrime(size[, options], callback)crypto.generatePrimeSync(size[, options])crypto.getCipherInfo(nameOrNid[, options])crypto.getCiphers()crypto.getCurves()crypto.getDiffieHellman(groupName)crypto.getFips()crypto.getHashes()crypto.getRandomValues(typedArray)crypto.hash(algorithm, data[, options])crypto.hkdf(digest, ikm, salt, info, keylen, callback)crypto.hkdfSync(digest, ikm, salt, info, keylen)crypto.pbkdf2(password, salt, iterations, keylen, digest, callback)crypto.pbkdf2Sync(password, salt, iterations, keylen, digest)crypto.privateDecrypt(privateKey, buffer)crypto.privateEncrypt(privateKey, buffer)crypto.publicDecrypt(key, buffer)crypto.publicEncrypt(key, buffer)crypto.randomBytes(size[, callback])crypto.randomFill(buffer[, offset][, size], callback)crypto.randomFillSync(buffer[, offset][, size])crypto.randomInt([min, ]max[, callback])crypto.randomUUID([options])crypto.randomUUIDv7([options])crypto.scrypt(password, salt, keylen[, options], callback)crypto.scryptSync(password, salt, keylen[, options])crypto.secureHeapUsed()crypto.setEngine(engine[, flags])crypto.setFips(bool)crypto.sign(algorithm, data, key[, callback])crypto.subtlecrypto.timingSafeEqual(a, b)crypto.verify(algorithm, data, key, signature[, callback])crypto.webcrypto
- Notes
- Crypto constants
- Debugger
- Deprecated APIs
- Revoking deprecations
- List of deprecated APIs
- DEP0001:
http.OutgoingMessage.prototype.flush - DEP0002:
require('_linklist') - DEP0003:
_writableState.buffer - DEP0004:
CryptoStream.prototype.readyState - DEP0005:
Buffer()constructor - DEP0006:
child_processoptions.customFds - DEP0007: Replace
clusterworker.suicidewithworker.exitedAfterDisconnect - DEP0008:
require('node:constants') - DEP0009:
crypto.pbkdf2without digest - DEP0010:
crypto.createCredentials - DEP0011:
crypto.Credentials - DEP0012:
Domain.dispose - DEP0013:
fsasynchronous function without callback - DEP0014:
fs.readlegacy String interface - DEP0015:
fs.readSynclegacy String interface - DEP0016:
GLOBAL/root - DEP0017:
Intl.v8BreakIterator - DEP0018: Unhandled promise rejections
- DEP0019:
require('.')resolved outside directory - DEP0020:
Server.connections - DEP0021:
Server.listenFD - DEP0022:
os.tmpDir() - DEP0023:
os.getNetworkInterfaces() - DEP0024:
REPLServer.prototype.convertToContext() - DEP0025:
require('node:sys') - DEP0026:
util.print() - DEP0027:
util.puts() - DEP0028:
util.debug() - DEP0029:
util.error() - DEP0030:
SlowBuffer - DEP0031:
ecdh.setPublicKey() - DEP0032:
node:domainmodule - DEP0033:
EventEmitter.listenerCount() - DEP0034:
fs.exists(path, callback) - DEP0035:
fs.lchmod(path, mode, callback) - DEP0036:
fs.lchmodSync(path, mode) - DEP0037:
fs.lchown(path, uid, gid, callback) - DEP0038:
fs.lchownSync(path, uid, gid) - DEP0039:
require.extensions - DEP0040:
node:punycodemodule - DEP0041:
NODE_REPL_HISTORY_FILEenvironment variable - DEP0042:
tls.CryptoStream - DEP0043:
tls.SecurePair - DEP0044:
util.isArray() - DEP0045:
util.isBoolean() - DEP0046:
util.isBuffer() - DEP0047:
util.isDate() - DEP0048:
util.isError() - DEP0049:
util.isFunction() - DEP0050:
util.isNull() - DEP0051:
util.isNullOrUndefined() - DEP0052:
util.isNumber() - DEP0053:
util.isObject() - DEP0054:
util.isPrimitive() - DEP0055:
util.isRegExp() - DEP0056:
util.isString() - DEP0057:
util.isSymbol() - DEP0058:
util.isUndefined() - DEP0059:
util.log() - DEP0060:
util._extend() - DEP0061:
fs.SyncWriteStream - DEP0062:
node --debug - DEP0063:
ServerResponse.prototype.writeHeader() - DEP0064:
tls.createSecurePair() - DEP0065:
repl.REPL_MODE_MAGICandNODE_REPL_MODE=magic - DEP0066:
OutgoingMessage.prototype._headers, OutgoingMessage.prototype._headerNames - DEP0067:
OutgoingMessage.prototype._renderHeaders - DEP0068:
node debug - DEP0069:
vm.runInDebugContext(string) - DEP0070:
async_hooks.currentId() - DEP0071:
async_hooks.triggerId() - DEP0072:
async_hooks.AsyncResource.triggerId() - DEP0073: Several internal properties of
net.Server - DEP0074:
REPLServer.bufferedCommand - DEP0075:
REPLServer.parseREPLKeyword() - DEP0076:
tls.parseCertString() - DEP0077:
Module._debug() - DEP0078:
REPLServer.turnOffEditorMode() - DEP0079: Custom inspection function on objects via
.inspect() - DEP0080:
path._makeLong() - DEP0081:
fs.truncate()using a file descriptor - DEP0082:
REPLServer.prototype.memory() - DEP0083: Disabling ECDH by setting
ecdhCurvetofalse - DEP0084: requiring bundled internal dependencies
- DEP0085: AsyncHooks sensitive API
- DEP0086: Remove
runInAsyncIdScope - DEP0089:
require('node:assert') - DEP0090: Invalid GCM authentication tag lengths
- DEP0091:
crypto.DEFAULT_ENCODING - DEP0092: Top-level
thisbound tomodule.exports - DEP0093:
crypto.fipsis deprecated and replaced - DEP0094: Using
assert.fail()with more than one argument - DEP0095:
timers.enroll() - DEP0096:
timers.unenroll() - DEP0097:
MakeCallbackwithdomainproperty - DEP0098: AsyncHooks embedder
AsyncResource.emitBeforeandAsyncResource.emitAfterAPIs - DEP0099: Async context-unaware
node::MakeCallbackC++ APIs - DEP0100:
process.assert() - DEP0101:
--with-lttng - DEP0102: Using
noAssertinBuffer#(read|write)operations - DEP0103:
process.binding('util').is[...]typechecks - DEP0104:
process.envstring coercion - DEP0105:
decipher.finaltol - DEP0106:
crypto.createCipherandcrypto.createDecipher - DEP0107:
tls.convertNPNProtocols() - DEP0108:
zlib.bytesRead - DEP0109:
http,https, andtlssupport for invalid URLs - DEP0110:
vm.Scriptcached data - DEP0111:
process.binding() - DEP0112:
dgramprivate APIs - DEP0113:
Cipher.setAuthTag(),Decipher.getAuthTag() - DEP0114:
crypto._toBuf() - DEP0115:
crypto.prng(),crypto.pseudoRandomBytes(),crypto.rng() - DEP0116: Legacy URL API
- DEP0117: Native crypto handles
- DEP0118:
dns.lookup()support for a falsy host name - DEP0119:
process.binding('uv').errname()private API - DEP0120: Windows Performance Counter support
- DEP0121:
net._setSimultaneousAccepts() - DEP0122:
tlsServer.prototype.setOptions() - DEP0123: setting the TLS ServerName to an IP address
- DEP0124: using
REPLServer.rli - DEP0125:
require('node:_stream_wrap') - DEP0126:
timers.active() - DEP0127:
timers._unrefActive() - DEP0128: modules with an invalid
mainentry and anindex.jsfile - DEP0129:
ChildProcess._channel - DEP0130:
Module.createRequireFromPath() - DEP0131: Legacy HTTP parser
- DEP0132:
worker.terminate()with callback - DEP0133:
httpconnection - DEP0134:
process._tickCallback - DEP0135:
WriteStream.open()andReadStream.open()are internal - DEP0136:
httpfinished - DEP0137: Closing fs.FileHandle on garbage collection
- DEP0138:
process.mainModule - DEP0139:
process.umask()with no arguments - DEP0140: Use
request.destroy()instead ofrequest.abort() - DEP0141:
repl.inputStreamandrepl.outputStream - DEP0142:
repl._builtinLibs - DEP0143:
Transform._transformState - DEP0144:
module.parent - DEP0145:
socket.bufferSize - DEP0146:
new crypto.Certificate() - DEP0147:
fs.rmdir(path, { recursive: true }) - DEP0148: Folder mappings in
"exports"(trailing"/") - DEP0149:
http.IncomingMessage#connection - DEP0150: Changing the value of
process.config - DEP0151: Main index lookup and extension searching
- DEP0152: Extension PerformanceEntry properties
- DEP0153:
dns.lookupanddnsPromises.lookupoptions type coercion - DEP0154: RSA-PSS generate key pair options
- DEP0155: Trailing slashes in pattern specifier resolutions
- DEP0156:
.abortedproperty and'abort','aborted'event inhttp - DEP0157: Thenable support in streams
- DEP0158:
buffer.slice(start, end) - DEP0159:
ERR_INVALID_CALLBACK - DEP0160:
process.on('multipleResolves', handler) - DEP0161:
process._getActiveRequests()andprocess._getActiveHandles() - DEP0162:
fs.write(),fs.writeFileSync()coercion to string - DEP0163:
channel.subscribe(onMessage),channel.unsubscribe(onMessage) - DEP0164:
process.exit(code),process.exitCodecoercion to integer - DEP0165:
--trace-atomics-wait - DEP0166: Double slashes in imports and exports targets
- DEP0167: Weak
DiffieHellmanGroupinstances (modp1,modp2,modp5) - DEP0168: Unhandled exception in Node-API callbacks
- DEP0169: Insecure url.parse()
- DEP0170: Invalid port when using
url.parse() - DEP0171: Setters for
http.IncomingMessageheaders and trailers - DEP0172: The
asyncResourceproperty ofAsyncResourcebound functions - DEP0173: the
assert.CallTrackerclass - DEP0174: calling
promisifyon a function that returns aPromise - DEP0175:
util.toUSVString - DEP0176:
fs.F_OK,fs.R_OK,fs.W_OK,fs.X_OK - DEP0177:
util.types.isWebAssemblyCompiledModule - DEP0178:
dirent.path - DEP0179:
Hashconstructor - DEP0180:
fs.Statsconstructor - DEP0181:
Hmacconstructor - DEP0182: Short GCM authentication tags without explicit
authTagLength - DEP0183: OpenSSL engine-based APIs
- DEP0184: Instantiating
node:zlibclasses withoutnew - DEP0185: Instantiating
node:replclasses withoutnew - DEP0187: Passing invalid argument types to
fs.existsSync - DEP0188:
process.features.ipv6andprocess.features.uv - DEP0189:
process.features.tls_* - DEP0190: Passing
argstonode:child_processexecFile/spawnwithshelloption - DEP0191:
repl.builtinModules - DEP0192:
require('node:_tls_common')andrequire('node:_tls_wrap') - DEP0193:
require('node:_stream_*') - DEP0194: HTTP/2 priority signaling
- DEP0195: Instantiating
node:httpclasses withoutnew - DEP0196: Calling
node:child_processfunctions withoptions.shellas an empty string - DEP0197:
util.types.isNativeError() - DEP0198: Creating SHAKE-128 and SHAKE-256 digests without an explicit
options.outputLength - DEP0199:
require('node:_http_*') - DEP0200: Closing fs.Dir on garbage collection
- DEP0201: Passing
options.typetoDuplex.toWeb() - DEP0202:
Http1IncomingMessageandHttp1ServerResponseoptions of HTTP/2 servers - DEP0203: Passing
CryptoKeytonode:cryptoAPIs - DEP0204:
KeyObject.from()with non-extractableCryptoKey - DEP0205:
module.register() - DEP0206: Calling
digest()on an already-finalizedHmacinstance
- DEP0001:
- Diagnostics Channel
- Public API
- Overview
- Class:
Channel - Class:
TracingChanneltracingChannel.subscribe(subscribers)tracingChannel.unsubscribe(subscribers)tracingChannel.traceSync(fn[, context[, thisArg[, ...args]]])tracingChannel.tracePromise(fn[, context[, thisArg[, ...args]]])tracingChannel.traceCallback(fn[, position[, context[, thisArg[, ...args]]]])tracingChannel.hasSubscribers
- TracingChannel Channels
- Built-in Channels
- Console
- HTTP
- HTTP/2
- Event:
'http2.client.stream.created' - Event:
'http2.client.stream.start' - Event:
'http2.client.stream.error' - Event:
'http2.client.stream.finish' - Event:
'http2.client.stream.bodyChunkSent' - Event:
'http2.client.stream.bodySent' - Event:
'http2.client.stream.close' - Event:
'http2.server.stream.created' - Event:
'http2.server.stream.start' - Event:
'http2.server.stream.error' - Event:
'http2.server.stream.finish' - Event:
'http2.server.stream.close'
- Event:
- Modules
- NET
- UDP
- Process
- Web Locks
- Worker Thread
- Public API
- DNS
- Class:
dns.Resolver dns.getServers()dns.lookup(hostname[, options], callback)dns.lookupService(address, port, callback)dns.resolve(hostname[, rrtype], callback)dns.resolve4(hostname[, options], callback)dns.resolve6(hostname[, options], callback)dns.resolveAny(hostname, callback)dns.resolveCname(hostname, callback)dns.resolveCaa(hostname, callback)dns.resolveMx(hostname, callback)dns.resolveNaptr(hostname, callback)dns.resolveNs(hostname, callback)dns.resolvePtr(hostname, callback)dns.resolveSoa(hostname, callback)dns.resolveSrv(hostname, callback)dns.resolveTlsa(hostname, callback)dns.resolveTxt(hostname, callback)dns.reverse(ip, callback)dns.setDefaultResultOrder(order)dns.getDefaultResultOrder()dns.setServers(servers)- DNS promises API
- Class:
dnsPromises.Resolver resolver.cancel()dnsPromises.getServers()dnsPromises.lookup(hostname[, options])dnsPromises.lookupService(address, port)dnsPromises.resolve(hostname[, rrtype])dnsPromises.resolve4(hostname[, options])dnsPromises.resolve6(hostname[, options])dnsPromises.resolveAny(hostname)dnsPromises.resolveCaa(hostname)dnsPromises.resolveCname(hostname)dnsPromises.resolveMx(hostname)dnsPromises.resolveNaptr(hostname)dnsPromises.resolveNs(hostname)dnsPromises.resolvePtr(hostname)dnsPromises.resolveSoa(hostname)dnsPromises.resolveSrv(hostname)dnsPromises.resolveTlsa(hostname)dnsPromises.resolveTxt(hostname)dnsPromises.reverse(ip)dnsPromises.setDefaultResultOrder(order)dnsPromises.getDefaultResultOrder()dnsPromises.setServers(servers)
- Class:
- Error codes
- Implementation considerations
- Class:
- Domain
- Environment Variables
- Errors
- Error propagation and interception
- Class:
Error - Class:
AssertionError - Class:
RangeError - Class:
ReferenceError - Class:
SyntaxError - Class:
SystemError - Class:
TypeError - Exceptions vs. errors
- OpenSSL errors
- Node.js error codes
ABORT_ERRERR_ACCESS_DENIEDERR_AMBIGUOUS_ARGUMENTERR_ARG_NOT_ITERABLEERR_ASSERTIONERR_ASYNC_CALLBACKERR_ASYNC_LOADER_REQUEST_NEVER_SETTLEDERR_ASYNC_TYPEERR_BROTLI_COMPRESSION_FAILEDERR_BROTLI_INVALID_PARAMERR_BUFFER_CONTEXT_NOT_AVAILABLEERR_BUFFER_OUT_OF_BOUNDSERR_BUFFER_TOO_LARGEERR_CANNOT_WATCH_SIGINTERR_CHILD_CLOSED_BEFORE_REPLYERR_CHILD_PROCESS_IPC_REQUIREDERR_CHILD_PROCESS_STDIO_MAXBUFFERERR_CLOSED_MESSAGE_PORTERR_CONSOLE_WRITABLE_STREAMERR_CONSTRUCT_CALL_INVALIDERR_CONSTRUCT_CALL_REQUIREDERR_CONTEXT_NOT_INITIALIZEDERR_CPU_PROFILE_ALREADY_STARTEDERR_CPU_PROFILE_NOT_STARTEDERR_CPU_PROFILE_TOO_MANYERR_CRYPTO_ARGON2_NOT_SUPPORTEDERR_CRYPTO_CUSTOM_ENGINE_NOT_SUPPORTEDERR_CRYPTO_ECDH_INVALID_FORMATERR_CRYPTO_ECDH_INVALID_PUBLIC_KEYERR_CRYPTO_ENGINE_UNKNOWNERR_CRYPTO_FIPS_FORCEDERR_CRYPTO_FIPS_UNAVAILABLEERR_CRYPTO_HASH_FINALIZEDERR_CRYPTO_HASH_UPDATE_FAILEDERR_CRYPTO_INCOMPATIBLE_KEYERR_CRYPTO_INCOMPATIBLE_KEY_OPTIONSERR_CRYPTO_INITIALIZATION_FAILEDERR_CRYPTO_INVALID_AUTH_TAGERR_CRYPTO_INVALID_COUNTERERR_CRYPTO_INVALID_CURVEERR_CRYPTO_INVALID_DIGESTERR_CRYPTO_INVALID_IVERR_CRYPTO_INVALID_JWKERR_CRYPTO_INVALID_KEYLENERR_CRYPTO_INVALID_KEYPAIRERR_CRYPTO_INVALID_KEYTYPEERR_CRYPTO_INVALID_KEY_OBJECT_TYPEERR_CRYPTO_INVALID_MESSAGELENERR_CRYPTO_INVALID_SCRYPT_PARAMSERR_CRYPTO_INVALID_STATEERR_CRYPTO_INVALID_TAG_LENGTHERR_CRYPTO_JOB_INIT_FAILEDERR_CRYPTO_JWK_UNSUPPORTED_CURVEERR_CRYPTO_JWK_UNSUPPORTED_KEY_TYPEERR_CRYPTO_KEM_NOT_SUPPORTEDERR_CRYPTO_OPERATION_FAILEDERR_CRYPTO_PBKDF2_ERRORERR_CRYPTO_SCRYPT_NOT_SUPPORTEDERR_CRYPTO_SIGN_KEY_REQUIREDERR_CRYPTO_TIMING_SAFE_EQUAL_LENGTHERR_CRYPTO_UNKNOWN_CIPHERERR_CRYPTO_UNKNOWN_DH_GROUPERR_CRYPTO_UNSUPPORTED_OPERATIONERR_DEBUGGER_ERRORERR_DEBUGGER_STARTUP_ERRORERR_DIR_CLOSEDERR_DIR_CONCURRENT_OPERATIONERR_DLOPEN_DISABLEDERR_DLOPEN_FAILEDERR_DNS_SET_SERVERS_FAILEDERR_DOMAIN_CALLBACK_NOT_AVAILABLEERR_DOMAIN_CANNOT_SET_UNCAUGHT_EXCEPTION_CAPTUREERR_DUPLICATE_STARTUP_SNAPSHOT_MAIN_FUNCTIONERR_ENCODING_INVALID_ENCODED_DATAERR_ENCODING_NOT_SUPPORTEDERR_EVAL_ESM_CANNOT_PRINTERR_EVENT_RECURSIONERR_EXECUTION_ENVIRONMENT_NOT_AVAILABLEERR_FALSY_VALUE_REJECTIONERR_FEATURE_UNAVAILABLE_ON_PLATFORMERR_FS_CP_DIR_TO_NON_DIRERR_FS_CP_EEXISTERR_FS_CP_EINVALERR_FS_CP_FIFO_PIPEERR_FS_CP_NON_DIR_TO_DIRERR_FS_CP_SOCKETERR_FS_CP_SYMLINK_TO_SUBDIRECTORYERR_FS_CP_UNKNOWNERR_FS_EISDIRERR_FS_FILE_TOO_LARGEERR_FS_WATCH_QUEUE_OVERFLOWERR_HTTP2_ALTSVC_INVALID_ORIGINERR_HTTP2_ALTSVC_LENGTHERR_HTTP2_CONNECT_AUTHORITYERR_HTTP2_CONNECT_PATHERR_HTTP2_CONNECT_SCHEMEERR_HTTP2_ERRORERR_HTTP2_GOAWAY_SESSIONERR_HTTP2_HEADERS_AFTER_RESPONDERR_HTTP2_HEADERS_SENTERR_HTTP2_HEADER_SINGLE_VALUEERR_HTTP2_INFO_STATUS_NOT_ALLOWEDERR_HTTP2_INVALID_CONNECTION_HEADERSERR_HTTP2_INVALID_HEADER_VALUEERR_HTTP2_INVALID_INFO_STATUSERR_HTTP2_INVALID_ORIGINERR_HTTP2_INVALID_PACKED_SETTINGS_LENGTHERR_HTTP2_INVALID_PSEUDOHEADERERR_HTTP2_INVALID_SESSIONERR_HTTP2_INVALID_SETTING_VALUEERR_HTTP2_INVALID_STREAMERR_HTTP2_MAX_PENDING_SETTINGS_ACKERR_HTTP2_NESTED_PUSHERR_HTTP2_NO_MEMERR_HTTP2_NO_SOCKET_MANIPULATIONERR_HTTP2_ORIGIN_LENGTHERR_HTTP2_OUT_OF_STREAMSERR_HTTP2_PAYLOAD_FORBIDDENERR_HTTP2_PING_CANCELERR_HTTP2_PING_LENGTHERR_HTTP2_PSEUDOHEADER_NOT_ALLOWEDERR_HTTP2_PUSH_DISABLEDERR_HTTP2_SEND_FILEERR_HTTP2_SEND_FILE_NOSEEKERR_HTTP2_SESSION_ERRORERR_HTTP2_SETTINGS_CANCELERR_HTTP2_SOCKET_BOUNDERR_HTTP2_SOCKET_UNBOUNDERR_HTTP2_STATUS_101ERR_HTTP2_STATUS_INVALIDERR_HTTP2_STREAM_CANCELERR_HTTP2_STREAM_ERRORERR_HTTP2_STREAM_SELF_DEPENDENCYERR_HTTP2_TOO_MANY_CUSTOM_SETTINGSERR_HTTP2_TOO_MANY_INVALID_FRAMESERR_HTTP2_TOO_MANY_ORIGINSERR_HTTP2_TRAILERS_ALREADY_SENTERR_HTTP2_TRAILERS_NOT_READYERR_HTTP2_UNSUPPORTED_PROTOCOLERR_HTTP_BODY_NOT_ALLOWEDERR_HTTP_CONTENT_LENGTH_MISMATCHERR_HTTP_HEADERS_SENTERR_HTTP_INVALID_HEADER_VALUEERR_HTTP_INVALID_STATUS_CODEERR_HTTP_REQUEST_TIMEOUTERR_HTTP_SOCKET_ASSIGNEDERR_HTTP_SOCKET_ENCODINGERR_HTTP_TRAILER_INVALIDERR_ILLEGAL_CONSTRUCTORERR_IMPORT_ATTRIBUTE_MISSINGERR_IMPORT_ATTRIBUTE_TYPE_INCOMPATIBLEERR_IMPORT_ATTRIBUTE_UNSUPPORTEDERR_INCOMPATIBLE_OPTION_PAIRERR_INPUT_TYPE_NOT_ALLOWEDERR_INSPECTOR_ALREADY_ACTIVATEDERR_INSPECTOR_ALREADY_CONNECTEDERR_INSPECTOR_CLOSEDERR_INSPECTOR_COMMANDERR_INSPECTOR_NOT_ACTIVEERR_INSPECTOR_NOT_AVAILABLEERR_INSPECTOR_NOT_CONNECTEDERR_INSPECTOR_NOT_WORKERERR_INTERNAL_ASSERTIONERR_INVALID_ADDRESSERR_INVALID_ADDRESS_FAMILYERR_INVALID_ARG_TYPEERR_INVALID_ARG_VALUEERR_INVALID_ASYNC_IDERR_INVALID_BUFFER_SIZEERR_INVALID_CHARERR_INVALID_CURSOR_POSERR_INVALID_FDERR_INVALID_FD_TYPEERR_INVALID_FILE_URL_HOSTERR_INVALID_FILE_URL_PATHERR_INVALID_HANDLE_TYPEERR_INVALID_HTTP_TOKENERR_INVALID_IP_ADDRESSERR_INVALID_MIME_SYNTAXERR_INVALID_MODULEERR_INVALID_MODULE_SPECIFIERERR_INVALID_OBJECT_DEFINE_PROPERTYERR_INVALID_PACKAGE_CONFIGERR_INVALID_PACKAGE_TARGETERR_INVALID_PROTOCOLERR_INVALID_REPL_EVAL_CONFIGERR_INVALID_REPL_INPUTERR_INVALID_RETURN_PROPERTYERR_INVALID_RETURN_PROPERTY_VALUEERR_INVALID_RETURN_VALUEERR_INVALID_STATEERR_INVALID_SYNC_FORK_INPUTERR_INVALID_THISERR_INVALID_TUPLEERR_INVALID_TYPESCRIPT_SYNTAXERR_INVALID_URIERR_INVALID_URLERR_INVALID_URL_PATTERNERR_INVALID_URL_SCHEMEERR_IPC_CHANNEL_CLOSEDERR_IPC_DISCONNECTEDERR_IPC_ONE_PIPEERR_IPC_SYNC_FORKERR_IP_BLOCKEDERR_LOADER_CHAIN_INCOMPLETEERR_LOAD_SQLITE_EXTENSIONERR_MEMORY_ALLOCATION_FAILEDERR_MESSAGE_TARGET_CONTEXT_UNAVAILABLEERR_METHOD_NOT_IMPLEMENTEDERR_MISSING_ARGSERR_MISSING_OPTIONERR_MISSING_PASSPHRASEERR_MISSING_PLATFORM_FOR_WORKERERR_MODULE_LINK_MISMATCHERR_MODULE_NOT_FOUNDERR_MULTIPLE_CALLBACKERR_NAPI_CONS_FUNCTIONERR_NAPI_INVALID_DATAVIEW_ARGSERR_NAPI_INVALID_TYPEDARRAY_ALIGNMENTERR_NAPI_INVALID_TYPEDARRAY_LENGTHERR_NAPI_TSFN_CALL_JSERR_NAPI_TSFN_GET_UNDEFINEDERR_NON_CONTEXT_AWARE_DISABLEDERR_NOT_BUILDING_SNAPSHOTERR_NOT_IN_SINGLE_EXECUTABLE_APPLICATIONERR_NOT_SUPPORTED_IN_SNAPSHOTERR_NO_CRYPTOERR_NO_ICUERR_NO_TYPESCRIPTERR_OPERATION_FAILEDERR_OPTIONS_BEFORE_BOOTSTRAPPINGERR_OUT_OF_RANGEERR_PACKAGE_IMPORT_NOT_DEFINEDERR_PACKAGE_PATH_NOT_EXPORTEDERR_PARSE_ARGS_INVALID_OPTION_VALUEERR_PARSE_ARGS_UNEXPECTED_POSITIONALERR_PARSE_ARGS_UNKNOWN_OPTIONERR_PERFORMANCE_INVALID_TIMESTAMPERR_PERFORMANCE_MEASURE_INVALID_OPTIONSERR_PROTO_ACCESSERR_PROXY_INVALID_CONFIGERR_PROXY_TUNNELERR_QUIC_APPLICATION_ERRORERR_QUIC_CONNECTION_FAILEDERR_QUIC_ENDPOINT_CLOSEDERR_QUIC_OPEN_STREAM_FAILEDERR_QUIC_TRANSPORT_ERRORERR_QUIC_VERSION_NEGOTIATION_ERRORERR_REQUIRE_ASYNC_MODULEERR_REQUIRE_CYCLE_MODULEERR_REQUIRE_ESMERR_REQUIRE_ESM_RACE_CONDITIONERR_SCRIPT_EXECUTION_INTERRUPTEDERR_SCRIPT_EXECUTION_TIMEOUTERR_SERVER_ALREADY_LISTENERR_SERVER_NOT_RUNNINGERR_SINGLE_EXECUTABLE_APPLICATION_ASSET_NOT_FOUNDERR_SOCKET_ALREADY_BOUNDERR_SOCKET_BAD_BUFFER_SIZEERR_SOCKET_BAD_PORTERR_SOCKET_BAD_TYPEERR_SOCKET_BUFFER_SIZEERR_SOCKET_CLOSEDERR_SOCKET_CLOSED_BEFORE_CONNECTIONERR_SOCKET_CONNECTION_TIMEOUTERR_SOCKET_DGRAM_IS_CONNECTEDERR_SOCKET_DGRAM_NOT_CONNECTEDERR_SOCKET_DGRAM_NOT_RUNNINGERR_SOURCE_MAP_CORRUPTERR_SOURCE_MAP_MISSING_SOURCEERR_SOURCE_PHASE_NOT_DEFINEDERR_SQLITE_ERRORERR_SRI_PARSEERR_STREAM_ALREADY_FINISHEDERR_STREAM_CANNOT_PIPEERR_STREAM_DESTROYEDERR_STREAM_NULL_VALUESERR_STREAM_PREMATURE_CLOSEERR_STREAM_PUSH_AFTER_EOFERR_STREAM_UNABLE_TO_PIPEERR_STREAM_UNSHIFT_AFTER_END_EVENTERR_STREAM_WRAPERR_STREAM_WRITE_AFTER_ENDERR_STRING_TOO_LONGERR_SYNTHETICERR_SYSTEM_ERRORERR_TEST_FAILUREERR_TLS_ALPN_CALLBACK_INVALID_RESULTERR_TLS_ALPN_CALLBACK_WITH_PROTOCOLSERR_TLS_CERT_ALTNAME_FORMATERR_TLS_CERT_ALTNAME_INVALIDERR_TLS_DH_PARAM_SIZEERR_TLS_HANDSHAKE_TIMEOUTERR_TLS_INVALID_CONTEXTERR_TLS_INVALID_PROTOCOL_METHODERR_TLS_INVALID_PROTOCOL_VERSIONERR_TLS_INVALID_STATEERR_TLS_PROTOCOL_VERSION_CONFLICTERR_TLS_PSK_SET_IDENTITY_HINT_FAILEDERR_TLS_RENEGOTIATION_DISABLEDERR_TLS_RENEGOTIATION_UNSUPPORTEDERR_TLS_REQUIRED_SERVER_NAMEERR_TLS_SESSION_ATTACKERR_TLS_SNI_FROM_SERVERERR_TRACE_EVENTS_CATEGORY_REQUIREDERR_TRACE_EVENTS_UNAVAILABLEERR_TRAILING_JUNK_AFTER_STREAM_ENDERR_TRANSFORM_ALREADY_TRANSFORMINGERR_TRANSFORM_WITH_LENGTH_0ERR_TTY_INIT_FAILEDERR_UNAVAILABLE_DURING_EXITERR_UNCAUGHT_EXCEPTION_CAPTURE_ALREADY_SETERR_UNESCAPED_CHARACTERSERR_UNHANDLED_ERRORERR_UNKNOWN_BUILTIN_MODULEERR_UNKNOWN_CREDENTIALERR_UNKNOWN_ENCODINGERR_UNKNOWN_FILE_EXTENSIONERR_UNKNOWN_MODULE_FORMATERR_UNKNOWN_SIGNALERR_UNSUPPORTED_DIR_IMPORTERR_UNSUPPORTED_ESM_URL_SCHEMEERR_UNSUPPORTED_NODE_MODULES_TYPE_STRIPPINGERR_UNSUPPORTED_RESOLVE_REQUESTERR_UNSUPPORTED_TYPESCRIPT_SYNTAXERR_USE_AFTER_CLOSEERR_VALID_PERFORMANCE_ENTRY_TYPEERR_VM_DYNAMIC_IMPORT_CALLBACK_MISSINGERR_VM_DYNAMIC_IMPORT_CALLBACK_MISSING_FLAGERR_VM_MODULE_ALREADY_LINKEDERR_VM_MODULE_CACHED_DATA_REJECTEDERR_VM_MODULE_CANNOT_CREATE_CACHED_DATAERR_VM_MODULE_DIFFERENT_CONTEXTERR_VM_MODULE_LINK_FAILUREERR_VM_MODULE_NOT_MODULEERR_VM_MODULE_STATUSERR_WASI_ALREADY_STARTEDERR_WASI_NOT_STARTEDERR_WEBASSEMBLY_NOT_SUPPORTEDERR_WEBASSEMBLY_RESPONSEERR_WORKER_INIT_FAILEDERR_WORKER_INVALID_EXEC_ARGVERR_WORKER_MESSAGING_ERROREDERR_WORKER_MESSAGING_FAILEDERR_WORKER_MESSAGING_SAME_THREADERR_WORKER_MESSAGING_TIMEOUTERR_WORKER_NOT_RUNNINGERR_WORKER_OUT_OF_MEMORYERR_WORKER_PATHERR_WORKER_UNSERIALIZABLE_ERRORERR_WORKER_UNSUPPORTED_OPERATIONERR_ZLIB_INITIALIZATION_FAILEDERR_ZSTD_INVALID_PARAMHPE_CHUNK_EXTENSIONS_OVERFLOWHPE_HEADER_OVERFLOWHPE_UNEXPECTED_CONTENT_LENGTHMODULE_NOT_FOUND
- Legacy Node.js error codes
ERR_CANNOT_TRANSFER_OBJECTERR_CPU_USAGEERR_CRYPTO_HASH_DIGEST_NO_UTF16ERR_CRYPTO_SCRYPT_INVALID_PARAMETERERR_FS_INVALID_SYMLINK_TYPEERR_HTTP2_FRAME_ERRORERR_HTTP2_HEADERS_OBJECTERR_HTTP2_HEADER_REQUIREDERR_HTTP2_INFO_HEADERS_AFTER_RESPONDERR_HTTP2_STREAM_CLOSEDERR_HTTP_INVALID_CHARERR_IMPORT_ASSERTION_TYPE_FAILEDERR_IMPORT_ASSERTION_TYPE_MISSINGERR_IMPORT_ASSERTION_TYPE_UNSUPPORTEDERR_INDEX_OUT_OF_RANGEERR_INVALID_OPT_VALUEERR_INVALID_OPT_VALUE_ENCODINGERR_INVALID_PERFORMANCE_MARKERR_INVALID_TRANSFER_OBJECTERR_MANIFEST_ASSERT_INTEGRITYERR_MANIFEST_DEPENDENCY_MISSINGERR_MANIFEST_INTEGRITY_MISMATCHERR_MANIFEST_INVALID_RESOURCE_FIELDERR_MANIFEST_INVALID_SPECIFIERERR_MANIFEST_PARSE_POLICYERR_MANIFEST_TDZERR_MANIFEST_UNKNOWN_ONERRORERR_MISSING_MESSAGE_PORT_IN_TRANSFER_LISTERR_MISSING_TRANSFERABLE_IN_TRANSFER_LISTERR_NAPI_CONS_PROTOTYPE_OBJECTERR_NAPI_TSFN_START_IDLE_LOOPERR_NAPI_TSFN_STOP_IDLE_LOOPERR_NO_LONGER_SUPPORTEDERR_OUTOFMEMORYERR_PARSE_HISTORY_DATAERR_SOCKET_CANNOT_SENDERR_STDERR_CLOSEERR_STDOUT_CLOSEERR_STREAM_READ_NOT_IMPLEMENTEDERR_TAP_LEXER_ERRORERR_TAP_PARSER_ERRORERR_TAP_VALIDATION_ERRORERR_TLS_RENEGOTIATION_FAILEDERR_TRANSFERRING_EXTERNALIZED_SHAREDARRAYBUFFERERR_UNKNOWN_STDIN_TYPEERR_UNKNOWN_STREAM_TYPEERR_V8BREAKITERATORERR_VALUE_OUT_OF_RANGEERR_VM_MODULE_LINKING_ERROREDERR_VM_MODULE_NOT_LINKEDERR_WORKER_UNSUPPORTED_EXTENSIONERR_ZLIB_BINDING_CLOSED
- OpenSSL Error Codes
- Events
- Passing arguments and
thisto listeners - Asynchronous vs. synchronous
- Handling events only once
- Error events
- Capture rejections of promises
- Class:
EventEmitter- Event:
'newListener' - Event:
'removeListener' emitter.addListener(eventName, listener)emitter.emit(eventName[, ...args])emitter.eventNames()emitter.getMaxListeners()emitter.listenerCount(eventName[, listener])emitter.listeners(eventName)emitter.off(eventName, listener)emitter.on(eventName, listener)emitter.once(eventName, listener)emitter.prependListener(eventName, listener)emitter.prependOnceListener(eventName, listener)emitter.removeAllListeners([eventName])emitter.removeListener(eventName, listener)emitter.setMaxListeners(n)emitter.rawListeners(eventName)emitter[Symbol.for('nodejs.rejection')](err, eventName[, ...args])
- Event:
events.defaultMaxListenersevents.errorMonitorevents.getEventListeners(emitterOrTarget, eventName)events.getMaxListeners(emitterOrTarget)events.once(emitter, name[, options])events.captureRejectionsevents.captureRejectionSymbolevents.listenerCount(emitterOrTarget, eventName)events.on(emitter, eventName[, options])events.setMaxListeners(n[, ...eventTargets])events.addAbortListener(signal, listener)- Class:
events.EventEmitterAsyncResource extends EventEmitter EventTargetandEventAPI- Node.js
EventTargetvs. DOMEventTarget NodeEventTargetvs.EventEmitter- Event listener
EventTargeterror handling- Class:
Eventevent.bubblesevent.cancelBubbleevent.cancelableevent.composedevent.composedPath()event.currentTargetevent.defaultPreventedevent.eventPhaseevent.initEvent(type[, bubbles[, cancelable]])event.isTrustedevent.preventDefault()event.returnValueevent.srcElementevent.stopImmediatePropagation()event.stopPropagation()event.targetevent.timeStampevent.type
- Class:
EventTarget - Class:
CustomEvent - Class:
NodeEventTargetnodeEventTarget.addListener(type, listener)nodeEventTarget.emit(type, arg)nodeEventTarget.eventNames()nodeEventTarget.listenerCount(type)nodeEventTarget.setMaxListeners(n)nodeEventTarget.getMaxListeners()nodeEventTarget.off(type, listener[, options])nodeEventTarget.on(type, listener)nodeEventTarget.once(type, listener)nodeEventTarget.removeAllListeners([type])nodeEventTarget.removeListener(type, listener[, options])
- Node.js
- Passing arguments and
- File system
- Promise example
- Callback example
- Synchronous example
- Promises API
- Class:
FileHandle- Event:
'close' filehandle.appendFile(data[, options])filehandle.chmod(mode)filehandle.chown(uid, gid)filehandle.close()filehandle.createReadStream([options])filehandle.createWriteStream([options])filehandle.datasync()filehandle.fdfilehandle.read(buffer, offset, length, position)filehandle.read([options])filehandle.read(buffer[, options])filehandle.readableWebStream([options])filehandle.readFile(options)filehandle.readLines([options])filehandle.readv(buffers[, position])filehandle.stat([options])filehandle.sync()filehandle.truncate(len)filehandle.utimes(atime, mtime)filehandle.write(buffer, offset[, length[, position]])filehandle.write(buffer[, options])filehandle.write(string[, position[, encoding]])filehandle.writeFile(data, options)filehandle.writev(buffers[, position])filehandle[Symbol.asyncDispose]()
- Event:
fsPromises.access(path[, mode])fsPromises.appendFile(path, data[, options])fsPromises.chmod(path, mode)fsPromises.chown(path, uid, gid)fsPromises.copyFile(src, dest[, mode])fsPromises.cp(src, dest[, options])fsPromises.glob(pattern[, options])fsPromises.lchmod(path, mode)fsPromises.lchown(path, uid, gid)fsPromises.lutimes(path, atime, mtime)fsPromises.link(existingPath, newPath)fsPromises.lstat(path[, options])fsPromises.mkdir(path[, options])fsPromises.mkdtemp(prefix[, options])fsPromises.mkdtempDisposable(prefix[, options])fsPromises.open(path, flags[, mode])fsPromises.opendir(path[, options])fsPromises.readdir(path[, options])fsPromises.readFile(path[, options])fsPromises.readlink(path[, options])fsPromises.realpath(path[, options])fsPromises.rename(oldPath, newPath)fsPromises.rmdir(path[, options])fsPromises.rm(path[, options])fsPromises.stat(path[, options])fsPromises.statfs(path[, options])fsPromises.symlink(target, path[, type])fsPromises.truncate(path[, len])fsPromises.unlink(path)fsPromises.utimes(path, atime, mtime)fsPromises.watch(filename[, options])fsPromises.writeFile(file, data[, options])fsPromises.constants
- Class:
- Callback API
fs.access(path[, mode], callback)fs.appendFile(path, data[, options], callback)fs.chmod(path, mode, callback)fs.chown(path, uid, gid, callback)fs.close(fd[, callback])fs.copyFile(src, dest[, mode], callback)fs.cp(src, dest[, options], callback)fs.createReadStream(path[, options])fs.createWriteStream(path[, options])fs.exists(path, callback)fs.fchmod(fd, mode, callback)fs.fchown(fd, uid, gid, callback)fs.fdatasync(fd, callback)fs.fstat(fd[, options], callback)fs.fsync(fd, callback)fs.ftruncate(fd[, len], callback)fs.futimes(fd, atime, mtime, callback)fs.glob(pattern[, options], callback)fs.lchmod(path, mode, callback)fs.lchown(path, uid, gid, callback)fs.lutimes(path, atime, mtime, callback)fs.link(existingPath, newPath, callback)fs.lstat(path[, options], callback)fs.mkdir(path[, options], callback)fs.mkdtemp(prefix[, options], callback)fs.open(path[, flags[, mode]], callback)fs.openAsBlob(path[, options])fs.opendir(path[, options], callback)fs.read(fd, buffer, offset, length, position, callback)fs.read(fd[, options], callback)fs.read(fd, buffer[, options], callback)fs.readdir(path[, options], callback)fs.readFile(path[, options], callback)fs.readlink(path[, options], callback)fs.readv(fd, buffers[, position], callback)fs.realpath(path[, options], callback)fs.realpath.native(path[, options], callback)fs.rename(oldPath, newPath, callback)fs.rmdir(path[, options], callback)fs.rm(path[, options], callback)fs.stat(path[, options], callback)fs.statfs(path[, options], callback)fs.symlink(target, path[, type], callback)fs.truncate(path[, len], callback)fs.unlink(path, callback)fs.unwatchFile(filename[, listener])fs.utimes(path, atime, mtime, callback)fs.watch(filename[, options][, listener])fs.watchFile(filename[, options], listener)fs.write(fd, buffer, offset[, length[, position]], callback)fs.write(fd, buffer[, options], callback)fs.write(fd, string[, position[, encoding]], callback)fs.writeFile(file, data[, options], callback)fs.writev(fd, buffers[, position], callback)
- Synchronous API
fs.accessSync(path[, mode])fs.appendFileSync(path, data[, options])fs.chmodSync(path, mode)fs.chownSync(path, uid, gid)fs.closeSync(fd)fs.copyFileSync(src, dest[, mode])fs.cpSync(src, dest[, options])fs.existsSync(path)fs.fchmodSync(fd, mode)fs.fchownSync(fd, uid, gid)fs.fdatasyncSync(fd)fs.fstatSync(fd[, options])fs.fsyncSync(fd)fs.ftruncateSync(fd[, len])fs.futimesSync(fd, atime, mtime)fs.globSync(pattern[, options])fs.lchmodSync(path, mode)fs.lchownSync(path, uid, gid)fs.lutimesSync(path, atime, mtime)fs.linkSync(existingPath, newPath)fs.lstatSync(path[, options])fs.mkdirSync(path[, options])fs.mkdtempSync(prefix[, options])fs.mkdtempDisposableSync(prefix[, options])fs.opendirSync(path[, options])fs.openSync(path[, flags[, mode]])fs.readdirSync(path[, options])fs.readFileSync(path[, options])fs.readlinkSync(path[, options])fs.readSync(fd, buffer, offset, length[, position])fs.readSync(fd, buffer[, options])fs.readvSync(fd, buffers[, position])fs.realpathSync(path[, options])fs.realpathSync.native(path[, options])fs.renameSync(oldPath, newPath)fs.rmdirSync(path[, options])fs.rmSync(path[, options])fs.statSync(path[, options])fs.statfsSync(path[, options])fs.symlinkSync(target, path[, type])fs.truncateSync(path[, len])fs.unlinkSync(path)fs.utimesSync(path, atime, mtime)fs.writeFileSync(file, data[, options])fs.writeSync(fd, buffer, offset[, length[, position]])fs.writeSync(fd, buffer[, options])fs.writeSync(fd, string[, position[, encoding]])fs.writevSync(fd, buffers[, position])
- Common Objects
- Class:
fs.Dir - Class:
fs.Dirent - Class:
fs.FSWatcher - Class:
fs.StatWatcher - Class:
fs.ReadStream - Class:
fs.Statsstats.isBlockDevice()stats.isCharacterDevice()stats.isDirectory()stats.isFIFO()stats.isFile()stats.isSocket()stats.isSymbolicLink()stats.devstats.inostats.modestats.nlinkstats.uidstats.gidstats.rdevstats.sizestats.blksizestats.blocksstats.atimeMsstats.mtimeMsstats.ctimeMsstats.birthtimeMsstats.atimeNsstats.mtimeNsstats.ctimeNsstats.birthtimeNsstats.atimestats.mtimestats.ctimestats.birthtime- Stat time values
- Class:
fs.StatFs - Class:
fs.Utf8Stream- Event:
'close' - Event:
'drain' - Event:
'drop' - Event:
'error' - Event:
'finish' - Event:
'ready' - Event:
'write' new fs.Utf8Stream([options])utf8Stream.appendutf8Stream.contentModeutf8Stream.destroy()utf8Stream.end()utf8Stream.fdutf8Stream.fileutf8Stream.flush(callback)utf8Stream.flushSync()utf8Stream.fsyncutf8Stream.maxLengthutf8Stream.minLengthutf8Stream.mkdirutf8Stream.modeutf8Stream.periodicFlushutf8Stream.reopen(file)utf8Stream.syncutf8Stream.write(data)utf8Stream.writingutf8Stream[Symbol.dispose]()
- Event:
- Class:
fs.WriteStream fs.constants
- Class:
- Notes
- Global objects
__dirname__filename- Class:
AbortController - Class:
AbortSignal atob(data)- Class:
Blob - Class:
BroadcastChannel btoa(data)- Class:
Buffer - Class:
ByteLengthQueuingStrategy clearImmediate(immediateObject)clearInterval(intervalObject)clearTimeout(timeoutObject)- Class:
CloseEvent - Class:
CompressionStream console- Class:
CountQueuingStrategy - Class:
Crypto crypto- Class:
CryptoKey - Class:
CustomEvent - Class:
DecompressionStream - Class:
DOMException - Class:
Event - Class:
EventSource - Class:
EventTarget exportsfetch- Class:
File - Class:
FormData global- Class:
Headers localStorage- Class:
MessageChannel - Class:
MessageEvent - Class:
MessagePort module- Class:
Navigator navigatorperformance- Class:
PerformanceEntry - Class:
PerformanceMark - Class:
PerformanceMeasure - Class:
PerformanceObserver - Class:
PerformanceObserverEntryList - Class:
PerformanceResourceTiming processqueueMicrotask(callback)- Class:
ReadableByteStreamController - Class:
ReadableStream - Class:
ReadableStreamBYOBReader - Class:
ReadableStreamBYOBRequest - Class:
ReadableStreamDefaultController - Class:
ReadableStreamDefaultReader - Class:
Request require()- Class:
Response sessionStoragesetImmediate(callback[, ...args])setInterval(callback, delay[, ...args])setTimeout(callback, delay[, ...args])- Class:
Storage structuredClone(value[, options])- Class:
SubtleCrypto - Class:
TextDecoder - Class:
TextDecoderStream - Class:
TextEncoder - Class:
TextEncoderStream - Class:
TransformStream - Class:
TransformStreamDefaultController - Class:
URL - Class:
URLPattern - Class:
URLSearchParams - Class:
WebAssembly - Class:
WebSocket - Class:
WritableStream - Class:
WritableStreamDefaultController - Class:
WritableStreamDefaultWriter
- HTTP
- Class:
http.Agent - Class:
http.ClientRequest- Event:
'abort' - Event:
'close' - Event:
'connect' - Event:
'continue' - Event:
'finish' - Event:
'information' - Event:
'response' - Event:
'socket' - Event:
'timeout' - Event:
'upgrade' request.abort()request.abortedrequest.connectionrequest.cork()request.end([data[, encoding]][, callback])request.destroy([error])request.finishedrequest.flushHeaders()request.getHeader(name)request.getHeaderNames()request.getHeaders()request.getRawHeaderNames()request.hasHeader(name)request.maxHeadersCountrequest.pathrequest.methodrequest.hostrequest.protocolrequest.removeHeader(name)request.reusedSocketrequest.setHeader(name, value)request.setNoDelay([noDelay])request.setSocketKeepAlive([enable][, initialDelay])request.setTimeout(timeout[, callback])request.socketrequest.uncork()request.writableEndedrequest.writableFinishedrequest.write(chunk[, encoding][, callback])
- Event:
- Class:
http.Server- Event:
'checkContinue' - Event:
'checkExpectation' - Event:
'clientError' - Event:
'close' - Event:
'connect' - Event:
'connection' - Event:
'dropRequest' - Event:
'request' - Event:
'upgrade' server.close([callback])server.closeAllConnections()server.closeIdleConnections()server.headersTimeoutserver.listen()server.listeningserver.maxHeadersCountserver.requestTimeoutserver.setTimeout([msecs][, callback])server.maxRequestsPerSocketserver.timeoutserver.keepAliveTimeoutserver.keepAliveTimeoutBufferserver[Symbol.asyncDispose]()
- Event:
- Class:
http.ServerResponse- Event:
'close' - Event:
'finish' response.addTrailers(headers)response.connectionresponse.cork()response.end([data[, encoding]][, callback])response.finishedresponse.flushHeaders()response.getHeader(name)response.getHeaderNames()response.getHeaders()response.hasHeader(name)response.headersSentresponse.removeHeader(name)response.reqresponse.sendDateresponse.setHeader(name, value)response.setTimeout(msecs[, callback])response.socketresponse.statusCoderesponse.statusMessageresponse.strictContentLengthresponse.uncork()response.writableEndedresponse.writableFinishedresponse.write(chunk[, encoding][, callback])response.writeContinue()response.writeEarlyHints(hints[, callback])response.writeHead(statusCode[, statusMessage][, headers])response.writeInformation(statusCode[, headers][, callback])response.writeProcessing()
- Event:
- Class:
http.IncomingMessage- Event:
'aborted' - Event:
'close' message.abortedmessage.completemessage.connectionmessage.destroy([error])message.headersmessage.headersDistinctmessage.httpVersionmessage.methodmessage.rawHeadersmessage.rawTrailersmessage.setTimeout(msecs[, callback])message.signalmessage.socketmessage.statusCodemessage.statusMessagemessage.trailersmessage.trailersDistinctmessage.url
- Event:
- Class:
http.OutgoingMessage- Event:
'drain' - Event:
'finish' - Event:
'prefinish' outgoingMessage.addTrailers(headers)outgoingMessage.appendHeader(name, value)outgoingMessage.connectionoutgoingMessage.cork()outgoingMessage.destroy([error])outgoingMessage.end(chunk[, encoding][, callback])outgoingMessage.flushHeaders()outgoingMessage.getHeader(name)outgoingMessage.getHeaderNames()outgoingMessage.getHeaders()outgoingMessage.hasHeader(name)outgoingMessage.headersSentoutgoingMessage.pipe()outgoingMessage.removeHeader(name)outgoingMessage.setHeader(name, value)outgoingMessage.setHeaders(headers)outgoingMessage.setTimeout(msecs[, callback])outgoingMessage.socketoutgoingMessage.uncork()outgoingMessage.writableCorkedoutgoingMessage.writableEndedoutgoingMessage.writableFinishedoutgoingMessage.writableHighWaterMarkoutgoingMessage.writableLengthoutgoingMessage.writableObjectModeoutgoingMessage.write(chunk[, encoding][, callback])
- Event:
http.METHODShttp.STATUS_CODEShttp.createServer([options][, requestListener])http.get(options[, callback])http.get(url[, options][, callback])http.globalAgenthttp.maxHeaderSizehttp.request(options[, callback])http.request(url[, options][, callback])http.validateHeaderName(name[, label])http.validateHeaderValue(name, value)http.setMaxIdleHTTPParsers(max)http.setGlobalProxyFromEnv([proxyEnv])- Class:
WebSocket - Built-in Proxy Support
- Class:
- HTTP/2
- Determining if crypto support is unavailable
- Core API
- Server-side example
- Client-side example
- Class:
Http2SessionHttp2Sessionand sockets- Event:
'close' - Event:
'connect' - Event:
'error' - Event:
'frameError' - Event:
'goaway' - Event:
'localSettings' - Event:
'ping' - Event:
'remoteSettings' - Event:
'stream' - Event:
'timeout' http2session.alpnProtocolhttp2session.close([callback])http2session.closedhttp2session.connectinghttp2session.destroy([error][, code])http2session.destroyedhttp2session.encryptedhttp2session.goaway([code[, lastStreamID[, opaqueData]]])http2session.localSettingshttp2session.originSethttp2session.pendingSettingsAckhttp2session.ping([payload, ]callback)http2session.ref()http2session.remoteSettingshttp2session.setLocalWindowSize(windowSize)http2session.setTimeout(msecs, callback)http2session.sockethttp2session.statehttp2session.settings([settings][, callback])http2session.typehttp2session.unref()
- Class:
ServerHttp2Session - Class:
ClientHttp2Session - Class:
Http2StreamHttp2StreamLifecycle- Event:
'aborted' - Event:
'close' - Event:
'error' - Event:
'frameError' - Event:
'ready' - Event:
'timeout' - Event:
'trailers' - Event:
'wantTrailers' http2stream.abortedhttp2stream.bufferSizehttp2stream.close(code[, callback])http2stream.closedhttp2stream.destroyedhttp2stream.endAfterHeadershttp2stream.idhttp2stream.pendinghttp2stream.priority(options)http2stream.rstCodehttp2stream.sentHeadershttp2stream.sentInfoHeadershttp2stream.sentTrailershttp2stream.sessionhttp2stream.setTimeout(msecs, callback)http2stream.statehttp2stream.sendTrailers(headers)
- Class:
ClientHttp2Stream - Class:
ServerHttp2Stream - Class:
Http2Server - Class:
Http2SecureServer http2.createServer([options][, onRequestHandler])http2.createSecureServer(options[, onRequestHandler])http2.connect(authority[, options][, listener])http2.constantshttp2.getDefaultSettings()http2.getPackedSettings([settings])http2.getUnpackedSettings(buf)http2.performServerHandshake(socket[, options])http2.sensitiveHeaders- Headers object
- Settings object
- Error handling
- Invalid character handling in header names and values
- Push streams on the client
- Supporting the
CONNECTmethod - The extended
CONNECTprotocol
- Compatibility API
- ALPN negotiation
- Class:
http2.Http2ServerRequest- Event:
'aborted' - Event:
'close' request.abortedrequest.authorityrequest.completerequest.connectionrequest.destroy([error])request.headersrequest.httpVersionrequest.methodrequest.rawHeadersrequest.rawTrailersrequest.schemerequest.setTimeout(msecs, callback)request.socketrequest.streamrequest.trailersrequest.url
- Event:
- Class:
http2.Http2ServerResponse- Event:
'close' - Event:
'finish' response.addTrailers(headers)response.appendHeader(name, value)response.connectionresponse.createPushResponse(headers, callback)response.end([data[, encoding]][, callback])response.finishedresponse.getHeader(name)response.getHeaderNames()response.getHeaders()response.hasHeader(name)response.headersSentresponse.removeHeader(name)response.reqresponse.sendDateresponse.setHeader(name, value)response.setTimeout(msecs[, callback])response.socketresponse.statusCoderesponse.statusMessageresponse.streamresponse.writableEndedresponse.write(chunk[, encoding][, callback])response.writeContinue()response.writeEarlyHints(hints)response.writeInformation(statusCode[, headers])response.writeHead(statusCode[, statusMessage][, headers])
- Event:
- Collecting HTTP/2 performance metrics
- Note on
:authorityandhost
- HTTPS
- Inspector
- Promises API
- Callback API
- Common Objects
- Integration with DevTools
inspector.Network.dataReceived([params])inspector.Network.dataSent([params])inspector.Network.requestWillBeSent([params])inspector.Network.responseReceived([params])inspector.Network.loadingFinished([params])inspector.Network.loadingFailed([params])inspector.Network.webSocketCreated([params])inspector.Network.webSocketHandshakeResponseReceived([params])inspector.Network.webSocketClosed([params])inspector.NetworkResources.putinspector.DOMStorage.domStorageItemAddedinspector.DOMStorage.domStorageItemRemovedinspector.DOMStorage.domStorageItemUpdatedinspector.DOMStorage.domStorageItemsClearedinspector.DOMStorage.registerStorage
- Support of breakpoints
- Internationalization support
- Modules: CommonJS modules
- Enabling
- Accessing the main module
- Package manager tips
- Loading ECMAScript modules using
require() - All together
- Caching
- Built-in modules
- Cycles
- File modules
- Folders as modules
- Loading from
node_modulesfolders - Loading from the global folders
- The module wrapper
- The module scope
- The
moduleobject - The
Moduleobject - Source map v3 support
- Modules: ECMAScript modules
- Modules:
node:moduleAPI- The
Moduleobject - Module compile cache
- Customization Hooks
- Synchronous customization hooks
- Asynchronous customization hooks
- Caveats of asynchronous customization hooks
- Registration of asynchronous customization hooks
- Chaining of asynchronous customization hooks
- Communication with asynchronous module customization hooks
- Asynchronous hooks accepted by
module.register() initialize()- Asynchronous
resolve(specifier, context, nextResolve) - Asynchronous
load(url, context, nextLoad)
- Examples
- Source Map Support
- The
- Modules: Packages
- Introduction
- Determining module system
- Package entry points
- Dual CommonJS/ES module packages
- Node.js
package.jsonfield definitions
- Modules: TypeScript
- Net
- IPC support
- Class:
net.BlockList - Class:
net.SocketAddress - Class:
net.Servernew net.Server([options][, connectionListener])- Event:
'close' - Event:
'connection' - Event:
'error' - Event:
'listening' - Event:
'drop' server.address()server.close([callback])server[Symbol.asyncDispose]()server.getConnections(callback)server.listen()server.listeningserver.maxConnectionsserver.dropMaxConnectionserver.ref()server.unref()
- Class:
net.Socketnew net.Socket([options])- Event:
'close' - Event:
'connect' - Event:
'connectionAttempt' - Event:
'connectionAttemptFailed' - Event:
'connectionAttemptTimeout' - Event:
'data' - Event:
'drain' - Event:
'end' - Event:
'error' - Event:
'lookup' - Event:
'ready' - Event:
'timeout' socket.address()socket.autoSelectFamilyAttemptedAddressessocket.bufferSizesocket.bytesReadsocket.bytesWrittensocket.connect()socket.connectingsocket.destroy([error])socket.destroyedsocket.destroySoon()socket.end([data[, encoding]][, callback])socket.localAddresssocket.localPortsocket.localFamilysocket.pause()socket.pendingsocket.ref()socket.remoteAddresssocket.remoteFamilysocket.remotePortsocket.resetAndDestroy()socket.resume()socket.setEncoding([encoding])socket.setKeepAlive([enable][, initialDelay])socket.setNoDelay([noDelay])socket.setTimeout(timeout[, callback])socket.getTypeOfService()socket.setTypeOfService(tos)socket.timeoutsocket.unref()socket.write(data[, encoding][, callback])socket.readyState
net.connect()net.createConnection()net.createServer([options][, connectionListener])net.getDefaultAutoSelectFamily()net.setDefaultAutoSelectFamily(value)net.getDefaultAutoSelectFamilyAttemptTimeout()net.setDefaultAutoSelectFamilyAttemptTimeout(value)net.isIP(input)net.isIPv4(input)net.isIPv6(input)
- OS
os.EOLos.availableParallelism()os.arch()os.constantsos.cpus()os.devNullos.endianness()os.freemem()os.getPriority([pid])os.homedir()os.hostname()os.loadavg()os.machine()os.networkInterfaces()os.platform()os.release()os.setPriority([pid, ]priority)os.tmpdir()os.totalmem()os.type()os.uptime()os.userInfo([options])os.version()- OS constants
- Path
- Windows vs. POSIX
path.basename(path[, suffix])path.delimiterpath.dirname(path)path.extname(path)path.format(pathObject)path.matchesGlob(path, pattern)path.isAbsolute(path)path.join([...paths])path.normalize(path)path.parse(path)path.posixpath.relative(from, to)path.resolve([...paths])path.seppath.toNamespacedPath(path)path.win32
- Performance measurement APIs
perf_hooks.performanceperformance.clearMarks([name])performance.clearMeasures([name])performance.clearResourceTimings([name])performance.eventLoopUtilization([utilization1[, utilization2]])performance.getEntries()performance.getEntriesByName(name[, type])performance.getEntriesByType(type)performance.mark(name[, options])performance.markResourceTiming(timingInfo, requestedUrl, initiatorType, global, cacheMode, bodyInfo, responseStatus[, deliveryType])performance.measure(name[, startMarkOrOptions[, endMark]])performance.nodeTimingperformance.now()performance.setResourceTimingBufferSize(maxSize)performance.timeOriginperformance.timerify(fn[, options])performance.toJSON()
- Class:
PerformanceEntry - Class:
PerformanceMark - Class:
PerformanceMeasure - Class:
PerformanceNodeEntry - Class:
PerformanceNodeTiming - Class:
PerformanceResourceTimingperformanceResourceTiming.workerStartperformanceResourceTiming.redirectStartperformanceResourceTiming.redirectEndperformanceResourceTiming.fetchStartperformanceResourceTiming.domainLookupStartperformanceResourceTiming.domainLookupEndperformanceResourceTiming.connectStartperformanceResourceTiming.connectEndperformanceResourceTiming.secureConnectionStartperformanceResourceTiming.requestStartperformanceResourceTiming.responseEndperformanceResourceTiming.transferSizeperformanceResourceTiming.encodedBodySizeperformanceResourceTiming.decodedBodySizeperformanceResourceTiming.toJSON()
- Class:
PerformanceObserver - Class:
PerformanceObserverEntryList perf_hooks.createHistogram([options])perf_hooks.eventLoopUtilization([utilization1[, utilization2]])perf_hooks.monitorEventLoopDelay([options])perf_hooks.timerify(fn[, options])- Class:
Histogramhistogram.counthistogram.countBigInthistogram.exceedshistogram.exceedsBigInthistogram.maxhistogram.maxBigInthistogram.meanhistogram.minhistogram.minBigInthistogram.percentile(percentile)histogram.percentileBigInt(percentile)histogram.percentileshistogram.percentilesBigInthistogram.reset()histogram.stddev
- Class:
IntervalHistogram extends Histogram - Class:
RecordableHistogram extends Histogram - Examples
- Permissions
- Process
- Process events
process.abort()process.allowedNodeEnvironmentFlagsprocess.archprocess.argvprocess.argv0process.availableMemory()process.channelprocess.chdir(directory)process.configprocess.connectedprocess.constrainedMemory()process.cpuUsage([previousValue])process.cwd()process.debugPortprocess.disconnect()process.dlopen(module, filename[, flags])process.emitWarning(warning[, options])process.emitWarning(warning[, type[, code]][, ctor])process.envprocess.execArgvprocess.execPathprocess.execve(file[, args[, env]])process.exit([code])process.exitCodeprocess.features.cached_builtinsprocess.features.debugprocess.features.inspectorprocess.features.ipv6process.features.require_moduleprocess.features.tlsprocess.features.tls_alpnprocess.features.tls_ocspprocess.features.tls_sniprocess.features.typescriptprocess.features.uvprocess.finalization.register(ref, callback)process.finalization.registerBeforeExit(ref, callback)process.finalization.unregister(ref)process.getActiveResourcesInfo()process.getBuiltinModule(id)process.getegid()process.geteuid()process.getgid()process.getgroups()process.getuid()process.hasUncaughtExceptionCaptureCallback()process.hrtime([time])process.hrtime.bigint()process.initgroups(user, extraGroup)process.kill(pid[, signal])process.loadEnvFile(path)process.mainModuleprocess.memoryUsage()process.memoryUsage.rss()process.nextTick(callback[, ...args])process.noDeprecationprocess.permissionprocess.pidprocess.platformprocess.ppidprocess.ref(maybeRefable)process.releaseprocess.reportprocess.report.compactprocess.report.directoryprocess.report.filenameprocess.report.getReport([err])process.report.reportOnFatalErrorprocess.report.reportOnSignalprocess.report.reportOnUncaughtExceptionprocess.report.excludeEnvprocess.report.signalprocess.report.writeReport([filename][, err])
process.resourceUsage()process.send(message[, sendHandle[, options]][, callback])process.setegid(id)process.seteuid(id)process.setgid(id)process.setgroups(groups)process.setuid(id)process.setSourceMapsEnabled(val)process.setUncaughtExceptionCaptureCallback(fn)process.sourceMapsEnabledprocess.stderrprocess.stdinprocess.stdoutprocess.throwDeprecationprocess.threadCpuUsage([previousValue])process.titleprocess.traceDeprecationprocess.traceProcessWarningsprocess.umask()process.umask(mask)process.unref(maybeRefable)process.uptime()process.versionprocess.versions- Exit codes
- Punycode
- Query string
- Readline
- Class:
InterfaceConstructor- Event:
'close' - Event:
'error' - Event:
'line' - Event:
'history' - Event:
'pause' - Event:
'resume' - Event:
'SIGCONT' - Event:
'SIGINT' - Event:
'SIGTSTP' rl.close()rl[Symbol.dispose]()rl.pause()rl.prompt([preserveCursor])rl.resume()rl.setPrompt(prompt)rl.getPrompt()rl.write(data[, key])rl[Symbol.asyncIterator]()rl.linerl.cursorrl.getCursorPos()
- Event:
- Promises API
- Callback API
readline.emitKeypressEvents(stream[, interface])- Example: Tiny CLI
- Example: Read file stream line-by-Line
- TTY keybindings
- Class:
- REPL
- Diagnostic report
- Single executable applications
- Generating single executable preparation blobs
- In the injected main script
- Single-executable application API
sea.getAsset(key[, encoding])sea.getAssetAsBlob(key[, options])sea.getRawAsset(key)sea.getAssetKeys()require(id)in the injected main script is not file based__filenameandmodule.filenamein the injected main script__dirnamein the injected main script- Using native addons in the injected main script
- Notes
- SQLite
- Type conversion between JavaScript and SQLite
- Class:
DatabaseSyncnew DatabaseSync(path[, options])database.aggregate(name, options)database.close()database.loadExtension(path[, entryPoint])database.enableLoadExtension(allow)database.enableDefensive(active)database.location([dbName])database.exec(sql)database.function(name[, options], fn)database.setAuthorizer(callback)database.isOpendatabase.isTransactiondatabase.limitsdatabase.open()database.serialize([dbName])database.deserialize(buffer[, options])database.prepare(sql[, options])database.createTagStore([maxSize])database.createSession([options])database.applyChangeset(changeset[, options])database[Symbol.dispose]()
- Class:
Session - Class:
StatementSyncstatement.all([namedParameters][, ...anonymousParameters])statement.columns()statement.expandedSQLstatement.get([namedParameters][, ...anonymousParameters])statement.iterate([namedParameters][, ...anonymousParameters])statement.run([namedParameters][, ...anonymousParameters])statement.setAllowBareNamedParameters(enabled)statement.setAllowUnknownNamedParameters(enabled)statement.setReturnArrays(enabled)statement.setReadBigInts(enabled)statement.sourceSQL
- Class:
SQLTagStore sqlite.backup(sourceDb, path[, options])sqlite.constants
- Stream
- Organization of this document
- Types of streams
- API for stream consumers
- Writable streams
- Class:
stream.Writable- Event:
'close' - Event:
'drain' - Event:
'error' - Event:
'finish' - Event:
'pipe' - Event:
'unpipe' writable.cork()writable.destroy([error])writable.closedwritable.destroyedwritable.end([chunk[, encoding]][, callback])writable.setDefaultEncoding(encoding)writable.uncork()writable.writablewritable.writableAbortedwritable.writableEndedwritable.writableCorkedwritable.erroredwritable.writableFinishedwritable.writableHighWaterMarkwritable.writableLengthwritable.writableNeedDrainwritable.writableObjectModewritable[Symbol.asyncDispose]()writable.write(chunk[, encoding][, callback])
- Event:
- Class:
- Readable streams
- Two reading modes
- Three states
- Choose one API style
- Class:
stream.Readable- Event:
'close' - Event:
'data' - Event:
'end' - Event:
'error' - Event:
'pause' - Event:
'readable' - Event:
'resume' readable.destroy([error])readable.closedreadable.destroyedreadable.isPaused()readable.pause()readable.pipe(destination[, options])readable.read([size])readable.readablereadable.readableAbortedreadable.readableDidReadreadable.readableEncodingreadable.readableEndedreadable.erroredreadable.readableFlowingreadable.readableHighWaterMarkreadable.readableLengthreadable.readableObjectModereadable.resume()readable.setEncoding(encoding)readable.unpipe([destination])readable.unshift(chunk[, encoding])readable.wrap(stream)readable[Symbol.asyncIterator]()readable[Symbol.asyncDispose]()readable.compose(stream[, options])readable.iterator([options])readable.map(fn[, options])readable.filter(fn[, options])readable.forEach(fn[, options])readable.toArray([options])readable.some(fn[, options])readable.find(fn[, options])readable.every(fn[, options])readable.flatMap(fn[, options])readable.drop(limit[, options])readable.take(limit[, options])readable.reduce(fn[, initial[, options]])
- Event:
- Duplex and transform streams
stream.finished(stream[, options], callback)stream.pipeline(source[, ...transforms], destination, callback)stream.pipeline(streams, callback)stream.compose(...streams)stream.isErrored(stream)stream.isReadable(stream)stream.isWritable(stream)stream.Readable.from(iterable[, options])stream.Readable.fromWeb(readableStream[, options])stream.Readable.isDisturbed(stream)stream.Readable.toWeb(streamReadable[, options])stream.Writable.fromWeb(writableStream[, options])stream.Writable.toWeb(streamWritable)stream.Duplex.from(src)stream.Duplex.fromWeb(pair[, options])stream.Duplex.toWeb(streamDuplex[, options])stream.addAbortSignal(signal, stream)stream.getDefaultHighWaterMark(objectMode)stream.setDefaultHighWaterMark(objectMode, value)
- Writable streams
- API for stream implementers
- Additional notes
- String decoder
- Test runner
- Subtests
- Rerunning failed tests
describe()andit()aliases- Skipping tests
- TODO tests
- Expecting tests to fail
onlytests- Filtering tests by name
- Extraneous asynchronous activity
- Watch mode
- Global setup and teardown
- Running tests from the command line
- Collecting code coverage
- Mocking
- Snapshot testing
- Test reporters
run([options])suite([name][, options][, fn])suite.skip([name][, options][, fn])suite.todo([name][, options][, fn])suite.only([name][, options][, fn])test([name][, options][, fn])test.skip([name][, options][, fn])test.todo([name][, options][, fn])test.only([name][, options][, fn])describe([name][, options][, fn])describe.skip([name][, options][, fn])describe.todo([name][, options][, fn])describe.only([name][, options][, fn])it([name][, options][, fn])it.skip([name][, options][, fn])it.todo([name][, options][, fn])it.only([name][, options][, fn])before([fn][, options])after([fn][, options])beforeEach([fn][, options])afterEach([fn][, options])assertsnapshot- Class:
MockFunctionContext - Class:
MockModuleContext - Class:
MockPropertyContext - Class:
MockTrackermock.fn([original[, implementation]][, options])mock.getter(object, methodName[, implementation][, options])mock.method(object, methodName[, implementation][, options])mock.module(specifier[, options])mock.property(object, propertyName[, value])mock.reset()mock.restoreAll()mock.setter(object, methodName[, implementation][, options])
- Class:
MockTimers - Class:
TestsStream- Event:
'test:coverage' - Event:
'test:complete' - Event:
'test:dequeue' - Event:
'test:diagnostic' - Event:
'test:enqueue' - Event:
'test:fail' - Event:
'test:interrupted' - Event:
'test:pass' - Event:
'test:plan' - Event:
'test:start' - Event:
'test:stderr' - Event:
'test:stdout' - Event:
'test:summary' - Event:
'test:watch:drained' - Event:
'test:watch:restarted'
- Event:
- Test instrumentation and OpenTelemetry
- Class:
TestContextcontext.before([fn][, options])context.beforeEach([fn][, options])context.after([fn][, options])context.afterEach([fn][, options])context.assertcontext.diagnostic(message)context.filePathcontext.fullNamecontext.namecontext.passedcontext.errorcontext.attemptcontext.workerIdcontext.plan(count[,options])context.runOnly(shouldRunOnlyTests)context.signalcontext.skip([message])context.todo([message])context.test([name][, options][, fn])context.waitFor(condition[, options])
- Class:
SuiteContext
- Timers
- TLS (SSL)
- Determining if crypto support is unavailable
- TLS/SSL concepts
- Modifying the default TLS cipher suite
- OpenSSL security level
- X509 certificate error codes
- Class:
tls.Server- Event:
'connection' - Event:
'keylog' - Event:
'newSession' - Event:
'OCSPRequest' - Event:
'resumeSession' - Event:
'secureConnection' - Event:
'tlsClientError' server.addContext(hostname, context)server.address()server.close([callback])server.getTicketKeys()server.listen()server.setSecureContext(options)server.setTicketKeys(keys)
- Event:
- Class:
tls.TLSSocketnew tls.TLSSocket(socket[, options])- Event:
'keylog' - Event:
'OCSPResponse' - Event:
'secure' - Event:
'secureConnect' - Event:
'session' tlsSocket.address()tlsSocket.authorizationErrortlsSocket.authorizedtlsSocket.disableRenegotiation()tlsSocket.enableTrace()tlsSocket.encryptedtlsSocket.exportKeyingMaterial(length, label[, context])tlsSocket.getCertificate()tlsSocket.getCipher()tlsSocket.getEphemeralKeyInfo()tlsSocket.getFinished()tlsSocket.getPeerCertificate([detailed])tlsSocket.getPeerFinished()tlsSocket.getPeerX509Certificate()tlsSocket.getProtocol()tlsSocket.getSession()tlsSocket.getSharedSigalgs()tlsSocket.getTLSTicket()tlsSocket.getX509Certificate()tlsSocket.isSessionReused()tlsSocket.localAddresstlsSocket.localPorttlsSocket.remoteAddresstlsSocket.remoteFamilytlsSocket.remotePorttlsSocket.renegotiate(options, callback)tlsSocket.setKeyCert(context)tlsSocket.setMaxSendFragment(size)
tls.checkServerIdentity(hostname, cert)tls.connect(options[, callback])tls.connect(path[, options][, callback])tls.connect(port[, host][, options][, callback])tls.createSecureContext([options])tls.createServer([options][, secureConnectionListener])tls.setDefaultCACertificates(certs)tls.getCACertificates([type])tls.getCiphers()tls.rootCertificatestls.DEFAULT_ECDH_CURVEtls.DEFAULT_MAX_VERSIONtls.DEFAULT_MIN_VERSIONtls.DEFAULT_CIPHERS
- Trace events
- TTY
- Class:
tty.ReadStream - Class:
tty.WriteStreamnew tty.ReadStream(fd[, options])new tty.WriteStream(fd)- Event:
'resize' writeStream.clearLine(dir[, callback])writeStream.clearScreenDown([callback])writeStream.columnswriteStream.cursorTo(x[, y][, callback])writeStream.getColorDepth([env])writeStream.getWindowSize()writeStream.hasColors([count][, env])writeStream.isTTYwriteStream.moveCursor(dx, dy[, callback])writeStream.rows
tty.isatty(fd)
- Class:
- UDP/datagram sockets
- Class:
dgram.Socket- Event:
'close' - Event:
'connect' - Event:
'error' - Event:
'listening' - Event:
'message' socket.addMembership(multicastAddress[, multicastInterface])socket.addSourceSpecificMembership(sourceAddress, groupAddress[, multicastInterface])socket.address()socket.bind([port][, address][, callback])socket.bind(options[, callback])socket.close([callback])socket[Symbol.asyncDispose]()socket.connect(port[, address][, callback])socket.disconnect()socket.dropMembership(multicastAddress[, multicastInterface])socket.dropSourceSpecificMembership(sourceAddress, groupAddress[, multicastInterface])socket.getRecvBufferSize()socket.getSendBufferSize()socket.getSendQueueSize()socket.getSendQueueCount()socket.ref()socket.remoteAddress()socket.send(msg[, offset, length][, port][, address][, callback])socket.setBroadcast(flag)socket.setMulticastInterface(multicastInterface)socket.setMulticastLoopback(flag)socket.setMulticastTTL(ttl)socket.setRecvBufferSize(size)socket.setSendBufferSize(size)socket.setTTL(ttl)socket.unref()
- Event:
node:dgrammodule functions
- Class:
- URL
- URL strings and URL objects
- The WHATWG URL API
- Class:
URL - Class:
URLPattern - Class:
URLSearchParamsnew URLSearchParams()new URLSearchParams(string)new URLSearchParams(obj)new URLSearchParams(iterable)urlSearchParams.append(name, value)urlSearchParams.delete(name[, value])urlSearchParams.entries()urlSearchParams.forEach(fn[, thisArg])urlSearchParams.get(name)urlSearchParams.getAll(name)urlSearchParams.has(name[, value])urlSearchParams.keys()urlSearchParams.set(name, value)urlSearchParams.sizeurlSearchParams.sort()urlSearchParams.toString()urlSearchParams.values()urlSearchParams[Symbol.iterator]()
url.domainToASCII(domain)url.domainToUnicode(domain)url.fileURLToPath(url[, options])url.fileURLToPathBuffer(url[, options])url.format(URL[, options])url.pathToFileURL(path[, options])url.urlToHttpOptions(url)
- Class:
- Legacy URL API
- Percent-encoding in URLs
- Util
util.callbackify(original)util.convertProcessSignalToExitCode(signal)util.debuglog(section[, callback])util.debug(section)util.deprecate(fn, msg[, code[, options]])util.diff(actual, expected)util.format(format[, ...args])util.formatWithOptions(inspectOptions, format[, ...args])util.getCallSites([frameCount][, options])util.getSystemErrorName(err)util.getSystemErrorMap()util.getSystemErrorMessage(err)util.setTraceSigInt(enable)util.inherits(constructor, superConstructor)util.inspect(object[, options])util.inspect(object[, showHidden[, depth[, colors]]])util.isDeepStrictEqual(val1, val2[, options])- Class:
util.MIMEType - Class:
util.MIMEParams util.parseArgs([config])util.parseEnv(content)util.promisify(original)util.stripVTControlCharacters(str)util.styleText(format, text[, options])- Class:
util.TextDecoder - Class:
util.TextEncoder util.toUSVString(string)util.transferableAbortController()util.transferableAbortSignal(signal)util.aborted(signal, resource)util.typesutil.types.isAnyArrayBuffer(value)util.types.isArrayBufferView(value)util.types.isArgumentsObject(value)util.types.isArrayBuffer(value)util.types.isAsyncFunction(value)util.types.isBigInt64Array(value)util.types.isBigIntObject(value)util.types.isBigUint64Array(value)util.types.isBooleanObject(value)util.types.isBoxedPrimitive(value)util.types.isCryptoKey(value)util.types.isDataView(value)util.types.isDate(value)util.types.isExternal(value)util.types.isFloat16Array(value)util.types.isFloat32Array(value)util.types.isFloat64Array(value)util.types.isGeneratorFunction(value)util.types.isGeneratorObject(value)util.types.isInt8Array(value)util.types.isInt16Array(value)util.types.isInt32Array(value)util.types.isKeyObject(value)util.types.isMap(value)util.types.isMapIterator(value)util.types.isModuleNamespaceObject(value)util.types.isNativeError(value)util.types.isNumberObject(value)util.types.isPromise(value)util.types.isProxy(value)util.types.isRegExp(value)util.types.isSet(value)util.types.isSetIterator(value)util.types.isSharedArrayBuffer(value)util.types.isStringObject(value)util.types.isSymbolObject(value)util.types.isTypedArray(value)util.types.isUint8Array(value)util.types.isUint8ClampedArray(value)util.types.isUint16Array(value)util.types.isUint32Array(value)util.types.isWeakMap(value)util.types.isWeakSet(value)
- Deprecated APIs
- V8
v8.cachedDataVersionTag()v8.getHeapCodeStatistics()v8.getHeapSnapshot([options])v8.getHeapSpaceStatistics()v8.getHeapStatistics()v8.getCppHeapStatistics([detailLevel])v8.queryObjects(ctor[, options])v8.setFlagsFromString(flags)v8.stopCoverage()v8.takeCoverage()v8.writeHeapSnapshot([filename[,options]])v8.setHeapSnapshotNearHeapLimit(limit)- Serialization API
v8.serialize(value)v8.deserialize(buffer)- Class:
v8.Serializernew Serializer()serializer.writeHeader()serializer.writeValue(value)serializer.releaseBuffer()serializer.transferArrayBuffer(id, arrayBuffer)serializer.writeUint32(value)serializer.writeUint64(hi, lo)serializer.writeDouble(value)serializer.writeRawBytes(buffer)serializer._writeHostObject(object)serializer._getDataCloneError(message)serializer._getSharedArrayBufferId(sharedArrayBuffer)serializer._setTreatArrayBufferViewsAsHostObjects(flag)
- Class:
v8.Deserializernew Deserializer(buffer)deserializer.readHeader()deserializer.readValue()deserializer.transferArrayBuffer(id, arrayBuffer)deserializer.getWireFormatVersion()deserializer.readUint32()deserializer.readUint64()deserializer.readDouble()deserializer.readRawBytes(length)deserializer._readHostObject()
- Class:
v8.DefaultSerializer - Class:
v8.DefaultDeserializer
- Promise hooks
- Startup Snapshot API
- Class:
v8.GCProfiler - Class:
SyncCPUProfileHandle - Class:
CPUProfileHandle - Class:
HeapProfileHandle v8.isStringOneByteRepresentation(content)v8.startCpuProfile()
- VM (executing JavaScript)
- Class:
vm.Script - Class:
vm.Module - Class:
vm.SourceTextModule - Class:
vm.SyntheticModule - Type:
ModuleRequest vm.compileFunction(code[, params[, options]])vm.constantsvm.createContext([contextObject[, options]])vm.isContext(object)vm.measureMemory([options])vm.runInContext(code, contextifiedObject[, options])vm.runInNewContext(code[, contextObject[, options]])vm.runInThisContext(code[, options])- Example: Running an HTTP server within a VM
- What does it mean to "contextify" an object?
- Timeout interactions with asynchronous tasks and Promises
- Support of dynamic
import()in compilation APIs
- Class:
- WebAssembly System Interface (WASI)
- Web Crypto API
- Modern Algorithms in the Web Cryptography API
- Secure Curves in the Web Cryptography API
- Examples
- Algorithm matrix
- Class:
Crypto - Class:
CryptoKey - Class:
CryptoKeyPair - Class:
SubtleCrypto- Static method:
SubtleCrypto.supports(operation, algorithm[, lengthOrAdditionalAlgorithm]) subtle.decapsulateBits(decapsulationAlgorithm, decapsulationKey, ciphertext)subtle.decapsulateKey(decapsulationAlgorithm, decapsulationKey, ciphertext, sharedKeyAlgorithm, extractable, usages)subtle.decrypt(algorithm, key, data)subtle.deriveBits(algorithm, baseKey[, length])subtle.deriveKey(algorithm, baseKey, derivedKeyAlgorithm, extractable, keyUsages)subtle.digest(algorithm, data)subtle.encapsulateBits(encapsulationAlgorithm, encapsulationKey)subtle.encapsulateKey(encapsulationAlgorithm, encapsulationKey, sharedKeyAlgorithm, extractable, usages)subtle.encrypt(algorithm, key, data)subtle.exportKey(format, key)subtle.getPublicKey(key, keyUsages)
- Static method: