API Reference > bentleyjs-core > All bentleyjs-core Classes Name Description AbandonedError Beta BeDuration A duration of time. BeEvent Manages a set of listeners for a particular event and notifies them when the event is raised. BeEventList A list of BeEvent objects, accessible by an event name. BentleyError The error type thrown by this module. BeTimePoint A specific point in time relative to the current time. BeUiEvent Specialization of BeEvent for events that take a single strongly typed argument, primarily used for UI events. ByteStream Allows the contents of an ArrayBuffer ClientRequestContext Provides generic context for a server application to get details of a particular Config Helper class that manages all configuration settings for an iModel.js application. Dictionary Maintains a mapping of keys to values. DisposableList A disposable container of disposable objects. Entry An entry holds the key and value, and pointers to any older and newer entries. IndexedValue Associates a value of type T with an index representing its insertion order in an IndexMap IndexMap Maintains a set of unique elements in sorted order and retains the insertion order of each. Logger Logger allows libraries and apps to report potentially useful information about operations, and it allows apps and users to control LRUCache A mapping of a key/value pairs, where the size of the cache can be limited. LRUDictionary A LRUCache using a Dictionary as its internal storage, permitting custom key comparison logic. LRUMap A LRUCache using a standard Map as its internal storage. MutableCompressedId64Set A mutable set of valid Id64Strings sorted in ascending order by the 64-bit unsigned integer value of the Ids. ObservableSet A standard Set that emits events when its contents change. OneAtATimeAction Orchestrator of a one-at-a-time activity. Beta OrderedId64Array A SortedArray of unique Id64Strings sorted in ascending order by the 64-bit unsigned integer values of the Ids. OrderedSet A mutable ReadonlyOrderedSet. PerfLogger Simple performance diagnostics utility. PriorityQueue A priority queue implemented as a heap array. ProcessDetector Functions to determine the type of JavaScript process currently executing. ReadonlyOrderedSet A read-only equivalent of Set<T> that maintains its elements in sorted order as specified by a comparison function. ReadonlySortedArray A read-only view of an array of some type T sorted according to some user-supplied criterion. SortedArray Maintains an array of some type T in sorted order. StopWatch A StopWatch for timing operations. TransientIdSequence Generates unique Id64String values in sequence, which are guaranteed not to conflict with Ids associated with persistent elements or models. Enumerations Name Description AuthStatus Authentication Errors Beta BentleyLoggerCategory Logger categories used by this package BentleyStatus Standard status code. BriefcaseStatus Error status from various briefcase operations Beta ChangeSetApplyOption Options that specify how to apply ChangeSets. ChangeSetStatus Error status from various ChangeSet operations Beta DbOpcode Values, stored in changesets, that indicate what operation was performed on the database. DbResult Values for return codes from BeSQLite functions. DuplicatePolicy Describes how duplicate values are handled when inserting into a SortedArray. ExtensionStatus iModel.js Extensions Beta GeoServiceStatus GeoServiceStatus errors HttpStatus Status from returned HTTP status code Beta IModelHubStatus iModelHub Services Errors Beta IModelStatus Status codes that are used in conjunction with BentleyError. LogLevel Use to categorize logging messages by severity. OpenMode Whether to open a database readonly or writeable. RepositoryStatus Return codes for methods which perform repository management operations Beta RpcInterfaceStatus RpcInterface status codes Beta WSStatus Server returned WSG errors Beta Global Functions Name Description areEqualPossiblyUndefined Compare two possibly-undefined values for equality. asInstanceOf Cast obj to an instance of class T, or return undefined if obj is not an instance of class T. assert Asserts that a condition is true, and in development builds throws an error if it is not. base64StringToUint8Array Given a base-64-encoded string, decode it into an array of bytes. compareBooleans compareBooleansOrUndefined compareNumbers compareNumbersOrUndefined comparePossiblyUndefined compareStrings compareStringsOrUndefined compareWithTolerance An OrderedComparator for numbers that treats two numbers as equal if the absolute value of their difference is less than a specified tolerance. dispose Convenience function for disposing of a disposable object that may be undefined. disposeArray Disposes of and empties a list of disposable objects. isIDisposable A type guard that checks whether the given argument implements IDisposable interface isInstanceOf Returns true if obj is an object of class T. lowerBound Given a sorted array, computes the position at which the specified value should be inserted into the array so that the array remains sorted. partitionArray Partitions an array in-place according to some criterion, such that elements that fulfill the criterion are grouped in the lower shallowClone A CloneFunction that, given a value of type T, returns the same value. using A 'using' function which is a substitution for .NET's using statement. utf8ToString Given an array of bytes containing a utf-8 string, convert to a string. Interfaces Name Description ClientRequestContextProps The properties of ClientRequestContext. DictionaryEntry Represents an entry in a Dictionary. EntryContainer The interface that must be satisfied by the underlying container type used by a LRUCache. IDisposable Interface adopted by a type which has deterministic cleanup logic. LoggerCategoryAndLevel Identifies a logging category and the LogLevel that should be used for it. LoggerLevelsConfig Specifies logging levels, including the default logging level and a set of categories and levels for them. SerializedClientRequestContext Serialized format for sending the client request context across the RPC layer SessionProps Properties that identify a session. StatusCodeWithMessage When you want to associate an explanatory message with an error status value. Beta Namespaces Name Description CompressedId64Set A compact string representation of an Id64Set. Guid The Guid namespace provides facilities for working with GUID strings using the "8-4-4-4-12" pattern. Id64 The Id64 namespace provides facilities for working with 64-bit identifiers. JsonUtils Utility functions for converting from JSON objects, with default values. OrderedId64Iterable A collection of valid Id64Strings sorted in ascending order by the unsigned 64-bit integer value of the Ids. Type Aliases Name Description CloneFunction CompressedId64Set ComputePriorityFunction Constructor DisposeFunc GetMetaDataFunction GuidString A string containing a well-formed string representation of a Guid. Id64Arg Used as an argument to a function that can accept one or more Id64Strings. Id64Array An array of Id64Strings. Id64Set A set of Id64Strings. Id64String A string containing a well-formed string representation of an Id64. Listener LogFunction Mutable The inverse of TypeScript's Readonly type, producing a type that has all the properties of T with any readonly modifiers removed. OrderedComparator OrderedId64Iterable Last Updated: 29 November, 2022