Feedback needed: Is there any API you would like officially public?

[paul-marechal]

We are in the process of stabilizing Theia's public API and we'd like your feedback on which API you think should make its way in the first iteration.

[planger]

Thank you very much for this initiative!

It is not a straightforward question to answer clearly, taking the consequences in maintenance into account. So what I did as a first step is to analyze one of our customer projects and -- with some grep, wc, etc. and manual cleanups -- determine the list of types, constants, and functions that are imported from Theia and count how often they are used. Maybe this gives some initial indication.

Please note that this analysis is not bullet proof, so there might be some items that aren't really meaningful. ;-)
Also I wouldn't claim that all of the items below should become public API. I think the list below could just be useful indicator for a rather typical adopter application.

Expand List (Customer Project)

• [566] injectable
• [433] inject
• [149] Emitter
• [144] postConstruct
• [144] Disposable
• [124] DisposableCollection
• [122] Event
• [112] interfaces
• [92] ContainerModule
• [78] ILogger
• [64] Container
• [59] CommandContribution
• [56] URI
• [56] nls
• [55] CommandRegistry
• [54] FileService
• [52] WorkspaceService
• [47] named
• [47] MessageService
• [47] FrontendApplicationContribution
• [45] Command
• [44] LabelProvider
• [43] EditorManager
• [41] CancellationToken
• [37] OpenerService
• [36] Widget
• [36] Deferred
• [36] ApplicationShell
• [34] FileUri
• [33] TreeNode
• [31] SelectionService
• [31] ContributionProvider
• [30] MenuModelRegistry
• [30] MenuContribution
• [27] optional
• [26] TabBarToolbarContribution
• [26] MaybePromise
• [26] ContextKeyService
• [25] KeybindingRegistry
• [25] KeybindingContribution
• [24] Message
• [23] isWindows
• [23] codicon
• [22] SelectableTreeNode
• [22] open
• [22] FileStat
• [21] Range
• [21] PreferenceService
• [21] LabelProviderContribution
• [21] EnvVariablesServer
• [21] EditorWidget
• [21] CompositeTreeNode
• [21] bindContributionProvider
• [21] BackendApplicationContribution
• [20] WidgetFactory
• [20] WebSocketConnectionProvider
• [19] MenuPath
• [19] isOSX
• [18] ContextKey
• [17] QuickPickItem
• [17] JsonRpcConnectionHandler
• [17] ConnectionHandler
• [17] CancellationTokenSource
• [16] OS
• [16] FrontendApplication
• [16] CommandService
• [16] ApplicationProps
• [15] QuickInputService
• [15] Position
• [15] FrontendApplicationConfigProvider
• [15] environment
• [15] enableJSDOM
• [15] CommonCommands
• [14] PreferenceScope
• [14] KeybindingContext
• [14] IJSONSchema
• [14] ExpandableTreeNode
• [14] Diagnostic
• [14] ColorRegistry
• [14] AbstractDialog
• [13] WidgetManager
• [13] TabBarToolbarRegistry
• [13] ResourceResolver
• [13] AbstractViewContribution
• [12] UriAwareCommandHandler
• [12] Resource
• [12] QuickAccessContribution
• [12] PreferenceSchema
• [12] Path
• [12] MonacoEditor
• [12] ContextMenuRenderer
• [12] ColorContribution
• [12] BinaryBuffer
• [11] UriCommandHandler
• [11] StatusBarAlignment
• [11] StatusBar
• [11] MessagingService
• [11] DiagnosticSeverity
• [11] ConfirmDialog
• [11] CommandHandler
• [10] TreeModelImpl
• [10] StorageService
• [10] MonacoEditorModel
• [10] JsonRpcServer
• [10] DialogProps
• [9] WidgetOpenerOptions
• [9] TreeProps
• [9] TreeModel
• [9] Tree
• [9] ThemeService
• [9] TextDocumentContentChangeEvent
• [9] TerminalService
• [9] TabBarDecorator
• [9] RecursivePartial
• [9] QuickPickValue
• [9] PreferenceConfigurations
• [9] EditorPreferences
• [9] DiffUris
• [9] ApplicationPackage
• [8] TreeImpl
• [8] Saveable
• [8] Reference
• [8] PreferenceProvider
• [8] PreferenceContribution
• [8] Key
• [8] JsonSchemaContribution
• [8] Endpoint
• [8] EditorOpenerOptions
• [8] EDITOR_CONTEXT_MENU
• [8] DialogError
• [8] deepClone
• [8] CliContribution
• [8] bindViewContribution
• [7] WaitUntilEvent
• [7] UUID
• [7] StatefulWidget
• [7] Severity
• [7] ScmService
• [7] QuickPickService
• [7] QuickAccessRegistry
• [7] ProcessManager
• [7] MonacoTextModelService
• [7] MockLogger
• [7] MessageClient
• [7] Location
• [7] IJSONSchemaSnippet
• [7] FileSystemPreferences
• [7] DidChangeLabelEvent
• [7] defaultTreeProps
• [7] BaseWidget
• [7] ApplicationShellLayoutMigration
• [6] WidgetDecoration
• [6] UriSelection
• [6] unmanaged
• [6] TreeWidget
• [6] TreeDecorator
• [6] SourceTreeWidget
• [6] ResourceLabelFormatter
• [6] ProgressService
• [6] Progress
• [6] PreferenceProxy
• [6] OpenerOptions
• [6] Mutable
• [6] multiInject
• [6] IWebSocket
• [6] FileStatNode
• [6] DefaultFrontendApplicationContribution
• [6] createTreeContainer
• [6] createPreferenceProxy
• [6] AsyncLocalizationProvider
• [6] ApplicationServer
• [5] WidgetDescription
• [5] TreeLabelProvider
• [5] Title
• [5] TextEditor
• [5] SymbolInformation
• [5] StatusBarEntry
• [5] RawProcessFactory
• [5] QuickPicks
• [5] QuickAccessProvider
• [5] ProblemManager
• [5] PreferenceSchemaProvider
• [5] OutputChannelManager
• [5] OpenHandler
• [5] NodeProps
• [5] NavigatorContextMenu
• [5] Navigatable
• [5] MonacoWorkspace
• [5] Keybinding
• [5] JsonRpcProxyFactory
• [5] JsonRpcProxy
• [5] JSONExt
• [5] FileNavigatorWidget
• [5] FileChangeType
• [5] DialogMode
• [5] DefaultUriLabelProviderContribution
• [5] DebugSessionManager
• [5] CommonMenus
• [5] codiconArray
• [5] CharCode
• [5] bindLogger
• [4] WindowService
• [4] VariableContribution
• [4] UTF8
• [4] UserStorageUri
• [4] UriComponents
• [4] type
• [4] TerminalWidget
• [4] TerminalProcess
• [4] TabBarToolbarItem
• [4] ReadableStreamEvents
• [4] QuickPick
• [4] NavigatableWidget
• [4] MonacoEditorService
• [4] MaybeArray
• [4] MAIN_MENU_BAR
• [4] LanguageService
• [4] JsonSchemaRegisterContext
• [4] InMemoryResources
• [4] FrontendApplicationConfig
• [4] filterItems
• [4] FileServiceContribution
• [4] FileOperationError
• [4] FileDialogService
• [4] DirNode
• [4] DebuggerDescription
• [4] debounce
• [4] ColorDefinition
• [4] Color
• [4] ClipboardService
• [4] ApplicationShellLayoutMigrationContext
• [4] ApplicationError
• [3] WorkspaceVariableContribution
• [3] WorkspaceCommands
• [3] WebviewPanelOptions
• [3] ViewContainer
• [3] VariableResolverService
• [3] URIIconReference
• [3] TreeSource
• [3] TreeDecoration
• [3] toArray
• [3] ThemeType
• [3] TaskService
• [3] SUPPORTED_ENCODINGS
• [3] StrictEditorTextFocusContext
• [3] startsWithIgnoreCase
• [3] SerializableEnvironmentVariableCollection
• [3] SelectionCommandHandler
• [3] ScmRepository
• [3] ScmProvider
• [3] ScmCommand
• [3] SaveOptions
• [3] SaveableSource
• [3] ResourceVersion
• [3] ResourceProvider
• [3] ResourceError
• [3] RawProcess
• [3] PreferenceSchemaProperties
• [3] PreferenceChangeEvent
• [3] OpenFileDialogProps
• [3] MonacoBulkEditService
• [3] MimeService
• [3] messagingBackendModule
• [3] MessageOptions
• [3] MessageLoop
• [3] LocalStorageService
• [3] LocalizationProvider
• [3] Localization
• [3] JSONValue
• [3] JsonSchemaStore
• [3] fuzzy
• [3] FileTreeModel
• [3] FileResourceResolver
• [3] FileOperationResult
• [3] FileNode
• [3] FILE_NAVIGATOR_ID
• [3] FileNavigatorContribution
• [3] FileChangesEvent
• [3] EXPLORER_VIEW_CONTAINER_ID
• [3] EncodingService
• [3] EditorMainMenu
• [3] EditorCommands
• [3] DiffNavigator
• [3] Dialog
• [3] DepthFirstTreeIterator
• [3] DecorationsService
• [3] Decoration
• [3] DebugSessionOptions
• [3] DebugConfiguration
• [3] ConnectionStatus
• [3] ConnectionErrorHandler
• [3] ConnectionContainerModule
• [3] CommunicationProvider
• [3] cancelled
• [3] BinaryBufferReadableStream
• [3] backendApplicationModule
• [3] BackendApplicationConfigProvider
• [3] BackendApplication
• [3] Argv
• [3] Arguments
• [3] AbstractTreeDecoratorService
• [2] yargs
• [2] WsRequestValidatorContribution
• [2] WorkspaceSymbolParams
• [2] WidgetOpenMode
• [2] WidgetOpenHandler
• [2] WebviewOptions
• [2] ViewColumn
• [2] VariableRegistry
• [2] TreeWidgetSelection
• [2] TreeElementNode
• [2] TreeElement
• [2] Theme
• [2] TextEditorDocument
• [2] TextEdit
• [2] TextDocumentSaveReason
• [2] TestWebSocketChannel
• [2] TerminalWidgetFactoryOptions
• [2] TerminalOptions
• [2] TaskResolverRegistry
• [2] TaskProviderRegistry
• [2] TaskIdentifier
• [2] TaskDefinitionRegistry
• [2] TaskContribution
• [2] TaskConfiguration
• [2] TabBar
• [2] SingleTextInputDialog
• [2] Signal
• [2] ShellTerminalServerProxy
• [2] sep
• [2] ScmWidget
• [2] ScmTreeWidget
• [2] ScmResourceGroup
• [2] ScmResource
• [2] ScmInputIssueType
• [2] ScmHistorySupport
• [2] ScmHistoryCommit
• [2] ScmCommit
• [2] SaveDialogOptions
• [2] RevealKind
• [2] ResourceSaveOptions
• [2] ResourceContextKey
• [2] remote
• [2] RelativePattern
• [2] ReferenceCollection
• [2] ReadableStream
• [2] Readable
• [2] RawProcessOptions
• [2] QuickPickSeparator
• [2] QuickInputButtonHandle
• [2] ProgressOptions
• [2] ProgressMessage
• [2] ProcessUtils
• [2] ProcessTaskConfiguration
• [2] processBackendModule
• [2] Process
• [2] PROBLEMS_WIDGET_ID
• [2] PreferenceResolveResult
• [2] PreferenceProviderDataChange
• [2] PreferenceLanguageOverrideService
• [2] PreferenceConfiguration
• [2] PreferenceChange
• [2] PluginViewRegistry
• [2] PluginHostEnvironmentVariable
• [2] PanelKind
• [2] Panel
• [2] OutputChannel
• [2] OpenViewArguments
• [2] OpenEditorsTreeDecorator
• [2] OpenDialogOptions
• [2] NotificationManager
• [2] newWriteableStream
• [2] NavigatorTreeDecorator
• [2] NAVIGATOR_CONTEXT_MENU
• [2] NavigatableWidgetOptions
• [2] MonacoQuickInputService
• [2] MonacoEditorProvider
• [2] MonacoEditorModelFactory
• [2] MonacoEditorFactory
• [2] MonacoContextMenuService
• [2] MockOpenerService
• [2] MockEnvVariablesServerImpl
• [2] MessageWriter
• [2] MessageType
• [2] MenuAction
• [2] Marker
• [2] LanguageSelector
• [2] Language
• [2] KeyCode
• [2] isFirefox
• [2] isCancelled
• [2] isBasicWasmSupported
• [2] IReference
• [2] IPty
• [2] IPCEntryPoint
• [2] IPCConnectionProvider
• [2] inputsSchema
• [2] InputBoxOptions
• [2] fs-extra
• [2] FrontendApplicationStateService
• [2] findMatches
• [2] FileTree
• [2] FileSystemUtils
• [2] FileSystemProviderCapabilities
• [2] FileSystemFrontendContribution
• [2] FileSystemCommands
• [2] FileSearchService
• [2] FilepathBreadcrumbsContribution
• [2] FileOperation
• [2] FileDownloadCommands
• [2] ExternalUriService
• [2] ExtensionInfo
• [2] EnvironmentUtils
• [2] EncodingRegistry
• [2] ElementExt
• [2] EditorPreferenceChange
• [2] EditorKeybindingContexts
• [2] EditorContextMenu
• [2] DocumentUri
• [2] DockPanel
• [2] DelegatingFileSystemProvider
• [2] DEFAULT_SUPPORTED_API_VERSION
• [2] deepmerge
• [2] decorate
• [2] DebugSessionContributionRegistry
• [2] DebugSession
• [2] DebugService
• [2] DebugPreferences
• [2] DebugHoverSource
• [2] DebugExpressionProvider
• [2] DebugContribution
• [2] DebugConfigurationManager
• [2] createScmTreeContainer
• [2] CommandLineOptions
• [2] CallHierarchyServiceProvider
• [2] CallHierarchyService
• [2] BreakpointManager
• [2] BreadcrumbsContribution
• [2] Breadcrumb
• [2] BackendApplicationConfig
• [2] AsyncEmitter
• [2] ApplicationShellMouseTracker
• [1] WriteableStream
• [1] WorkspaceUriLabelProviderContribution
• [1] WorkspaceSymbolProvider
• [1] workspaceServer
• [1] WorkspaceRootUriAwareCommandHandler
• [1] WorkspaceRootNode
• [1] WorkspaceInput
• [1] WorkspaceData
• [1] WindowState
• [1] WillSaveMonacoModelEvent
• [1] WebviewPortMapping
• [1] WebviewPanelShowOptions
• [1] WebSocketChannelConnection
• [1] WebSocketChannel
• [1] waitForClosed
• [1] VSCODE_EXT
• [1] ViewContainerTitleOptions
• [1] Variable
• [1] UTF8_with_bom
• [1] UploadDialogOptions
• [1] unreachable
• [1] TreeSourceNode
• [1] TreeExpansionService
• [1] TreeDecoratorService
• [1] transform
• [1] TrackedRangeStickiness
• [1] toPosition
• [1] TopDownTreeIterator
• [1] toDocumentSymbol
• [1] toAnchor
• [1] timeout
• [1] TimelineService
• [1] TIMELINE_ITEM_CONTEXT_MENU
• [1] TimelineItem
• [1] throttle
• [1] ThemeServiceSymbol
• [1] TheiaPluginScanner
• [1] THEIA_EXT
• [1] TextmateRegistry
• [1] TextEditorSelection
• [1] TextEditorProvider
• [1] TextDocumentContentChangeDelta
• [1] TextDocumentChangeEvent
• [1] TernarySearchTree
• [1] TerminalWidgetOptions
• [1] TERMINAL_WIDGET_FACTORY_ID
• [1] terminalsPath
• [1] TerminalProcessOptions
• [1] TerminalProcessFactory
• [1] TerminalMenus
• [1] TerminalFrontendContribution
• [1] terminalBackendModule
• [1] Terminal
• [1] TaskWatcher
• [1] TaskTerminalProcess
• [1] TaskScope
• [1] TaskResolver
• [1] TaskProvider
• [1] TaskOutputPresentation
• [1] TaskInfo
• [1] TaskExitedEvent
• [1] TaskEndedTypes
• [1] TaskEndedInfo
• [1] TaskDefinition
• [1] TaskCustomization
• [1] SyncReferenceCollection
• [1] SymbolTag
• [1] SymbolKind
• [1] strings
• [1] StreamCommunicationProvider
• [1] StatusBarItem
• [1] spawn
• [1] SourceBreakpoint
• [1] SingleTextInputDialogProps
• [1] ShellProcess
• [1] ShellCommandBuilder
• [1] setEnabled
• [1] SELECTED_CLASS
• [1] SEARCH_VIEW_CONTAINER_ID
• [1] SearchInWorkspaceService
• [1] score
• [1] SCM_VIEW_CONTAINER_ID
• [1] ScmResourceDecorations
• [1] ScmInput
• [1] ScmHistoryProvider
• [1] ScmFileChange
• [1] ScmContribution
• [1] ScmContextKeyService
• [1] ScmAmendSupport
• [1] Schemes
• [1] SaveFileDialogProps
• [1] SaveableWidget
• [1] Router
• [1] retry
• [1] Response
• [1] ResourceTextEdit
• [1] ResourceReadOptions
• [1] ResourceFileEdit
• [1] ResourceEncoding
• [1] Request
• [1] remove
• [1] rebuild
• [1] ReadonlyJSONValue
• [1] readdir
• [1] ReactWidget
• [1] QuickViewService
• [1] QuickOpenWorkspace
• [1] QuickOpenTask
• [1] QuickInputButton
• [1] QuickInput
• [1] QuickCommandService
• [1] quickCommand
• [1] QuickAccessProviderDescriptor
• [1] PseudoTerminalOptions
• [1] ProtocolToMonacoConverter
• [1] ProgressUpdate
• [1] ProgressBarFactory
• [1] ProcessErrorEvent
• [1] ProblemWidget
• [1] ProblemPatternRegistry
• [1] ProblemPatternContribution
• [1] ProblemMatcherRegistry
• [1] ProblemMatcherContribution
• [1] PreferenceTreeGenerator
• [1] PreferenceServiceImpl
• [1] PreferenceProviderProvider
• [1] PreferenceProviderDataChanges
• [1] PreferenceInspection
• [1] PreferenceDataProperty
• [1] PluginType
• [1] PluginServer
• [1] PluginScanner
• [1] PluginPackage
• [1] PluginModel
• [1] PluginLifecycle
• [1] PluginEngine
• [1] PluginDeployerStartContext
• [1] PluginDeployerParticipant
• [1] PluginDeployerFileHandlerContext
• [1] PluginDeployerFileHandler
• [1] PluginDeployerEntry
• [1] PluginAPIFactory
• [1] Plugin
• [1] PickOptions
• [1] peekStream
• [1] peekReadable
• [1] pathExists
• [1] PartialMessageInfo
• [1] parseArgs
• [1] parse
• [1] PanelLayout
• [1] OVSXClient
• [1] OVERRIDE_PROPERTY_PATTERN
• [1] OUTPUT_WIDGET_KIND
• [1] OutputCommands
• [1] OutlineViewService
• [1] OutlineTreeDecorator
• [1] OutlineSymbolInformationNode
• [1] OpenEditorsWidget
• [1] OpenEditorNode
• [1] nsfw
• [1] notEmpty
• [1] normalize
• [1] NavigationLocationService
• [1] NavigatableWidgetOpenHandler
• [1] nativeKeymap
• [1] MultiRingBuffer
• [1] MonacoToProtocolConverter
• [1] MonacoThemingService
• [1] MonacoTextmateService
• [1] MonacoSnippetSuggestProvider
• [1] MonacoLanguages
• [1] MonacoEditorServices
• [1] MonacoDiffEditor
• [1] MonacoConfigurationService
• [1] MimeAssociation
• [1] messagingFrontendModule
• [1] MessageReader
• [1] MessageItem
• [1] MessageConnection
• [1] Menu
• [1] MarkerManager
• [1] markAsFileSystemProviderError
• [1] LogLevel
• [1] loggerFrontendModule
• [1] loggerBackendModule
• [1] Loggable
• [1] Log
• [1] LocalizationRegistry
• [1] localizationPath
• [1] LocalizationContribution
• [1] loadTranslations
• [1] LineChange
• [1] LanguageFilter
• [1] Keystroke
• [1] KeySequence
• [1] KeyModifier
• [1] KeybindingScope
• [1] JSONObject
• [1] isUriComponents
• [1] isReadableStream
• [1] isReadableBufferedStream
• [1] isEmpty
• [1] isChrome
• [1] IRelativePattern
• [1] IProcessExitEvent
• [1] InputBox
• [1] InlineCommunicationProvider
• [1] IDragEvent
• [1] IconThemeService
• [1] IconThemeDefinition
• [1] IconTheme
• [1] HttpOpenHandlerOptions
• [1] HistoryWidgetOptions
• [1] GrammarDefinition
• [1] getTemporaryWorkspaceFileUri
• [1] getTempDir
• [1] getEncodedLanguageId
• [1] FunctionBreakpoint
• [1] FrontendConnectionStatusService
• [1] frontendApplicationModule
• [1] FormatType
• [1] FocusTracker
• [1] FOCUS_CLASS
• [1] FindMatchesOptions
• [1] FindMatch
• [1] FileUploadService
• [1] FileTreeWidget
• [1] FileSystemProviderErrorCode
• [1] FileSystemProviderActivationEvent
• [1] FileSystemProvider
• [1] FileSystemConfiguration
• [1] filesystemBackendModule
• [1] FileSystem
• [1] FileResource
• [1] FilepathBreadcrumbClassNameFactory
• [1] FilepathBreadcrumb
• [1] FileNavigatorFilter
• [1] FileFilter
• [1] FileDialogTreeFilters
• [1] FileDialogProps
• [1] FileDialog
• [1] FileDeleteOptions
• [1] extract
• [1] ExpressionItem
• [1] expectThrowsAsync
• [1] ErrorTransformer
• [1] EncodingMode
• [1] emptyPlugin
• [1] ElectronSecurityToken
• [1] EditorTextFocusContext
• [1] EditorMouseEvent
• [1] EDITOR_FONT_DEFAULTS
• [1] EditorDecorationStyle
• [1] EditorDecorationOptions
• [1] EditorDecoration
• [1] EDITOR_CONTEXT_MENU_SCM
• [1] EditorConfiguration
• [1] dynamicRequire
• [1] DOMPurify
• [1] DocumentsMainImpl
• [1] DockLayout
• [1] DiskFileSystemProvider
• [1] DirtyDiffUpdate
• [1] DirtyDiffDecorator
• [1] DirtyDiff
• [1] direct
• [1] Dimension
• [1] DiffService
• [1] DiffNavigatorProvider
• [1] DiffComputer
• [1] DiagnosticTag
• [1] DiagnosticRelatedInformation
• [1] DescriptionWidget
• [1] dependency
• [1] DeltaDecorationParams
• [1] Definition
• [1] DEFAULT_WORD_SEPARATORS
• [1] DEFAULT_WINDOW_HASH
• [1] DEFAULT_SCROLL_OPTIONS
• [1] DefaultOpenerService
• [1] DefaultDebugSessionFactory
• [1] DecorationsProvider
• [1] DecodeStreamResult
• [1] DebugWidget
• [1] DebugWatchManager
• [1] DebugThreadsWidget
• [1] DebugStackFramesWidget
• [1] DebugSourceBreakpoint
• [1] DebugSessionContribution
• [1] DebugSessionConnection
• [1] DebugSchemaUpdater
• [1] DebugRequestTypes
• [1] DebugPath
• [1] DebugFunctionBreakpoint
• [1] DebugFrontendApplicationContribution
• [1] DebugConsoleSession
• [1] DebugConsoleContribution
• [1] DebugAdapterSessionImpl
• [1] DebugAdapterSession
• [1] DataTransformer
• [1] DataCallback
• [1] CustomEditorWidget
• [1] CustomEditorOpener
• [1] CurrentEditorAccess
• [1] CredentialsService
• [1] createUntitledURI
• [1] createIpcEnv
• [1] createIconButton
• [1] createFileTreeContainer
• [1] createFileNavigatorContainer
• [1] createFileDialogContainer
• [1] ContentLines
• [1] consumeStream
• [1] ConsoleSessionManager
• [1] ConsoleSession
• [1] ConsoleItem
• [1] CompositeTreeElement
• [1] commonPrefixLength
• [1] ColorDefaults
• [1] ColorApplicationContribution
• [1] CliManager
• [1] checkCancelled
• [1] CancellationError
• [1] CallHierarchyDefinition
• [1] CallHierarchyCaller
• [1] CallHierarchyCallee
• [1] BuiltinThemeProvider
• [1] BreakpointsChangeEvent
• [1] bindPreferenceService
• [1] bindMockPreferenceProviders
• [1] BinaryBufferWriteableStream
• [1] BinaryBufferReadableBufferedStream
• [1] BinaryBufferReadable
• [1] BaseStat
• [1] BackendInitializationFn
• [1] BackendApplicationServer
• [1] ApplicationPackageOptions
• [1] ApplicationPackageManager
• [1] Application
• [1] AnsiConsoleItem
• [1] addClipboardListener
• [1] AbstractConnectionStatusService
• [1] AboutDialog

I also repeated the same exercise for the GLSP Theia integration.

Expand List (GLSP Theia Integration)

• [220] injectable
• [166] inject
• [56] postConstruct
• [46] Event
• [45] Disposable
• [41] nls
• [41] interfaces
• [41] Emitter
• [33] DisposableCollection
• [31] Container
• [30] ILogger
• [30] ContainerModule
• [28] FileService
• [28] CommandContribution
• [26] CommandRegistry
• [25] named
• [23] OpenerService
• [23] MessageService
• [22] ApplicationShell
• [20] MenuContribution
• [20] FrontendApplicationContribution
• [19] SelectionService
• [19] LabelProvider
• [19] FileUri
• [17] MenuModelRegistry
• [17] FileStat
• [16] WorkspaceService
• [16] Widget
• [16] Deferred
• [16] Command
• [15] TreeNode
• [15] StandaloneServices
• [15] KeybindingContribution
• [15] ContributionProvider
• [15] ContextKeyService
• [14] isWindows
• [14] ApplicationProps
• [13] enableJSDOM
• [13] CancellationToken
• [12] optional
• [12] open
• [12] EnvVariablesServer
• [12] environment
• [12] EditorManager
• [12] Diagnostic
• [12] CompositeTreeNode
• [11] OS
• [11] KeybindingRegistry
• [11] isOSX
• [11] FrontendApplication
• [11] bindContributionProvider
• [10] Range
• [10] PreferenceService
• [10] PreferenceScope
• [10] MaybePromise
• [10] KeybindingContext
• [10] FrontendApplicationConfigProvider
• [10] CommonCommands
• [9] WidgetFactory
• [8] TextDocumentContentChangeEvent
• [8] TabBarToolbarContribution
• [8] SelectableTreeNode
• [8] MenuPath
• [8] LabelProviderContribution
• [8] DiagnosticSeverity
• [8] ConfirmDialog
• [8] BackendApplicationContribution
• [8] ApplicationPackage
• [7] TreeDecorator
• [7] QuickAccessContribution
• [7] PreferenceConfigurations
• [7] Position
• [7] Message
• [6] WidgetManager
• [6] WebSocketConnectionProvider
• [6] StorageService
• [6] Saveable
• [6] QuickPickItem
• [6] QuickInputService
• [6] ProcessManager
• [6] MockLogger
• [6] LanguageService
• [6] EditorPreferences
• [6] BinaryBuffer
• [6] ApplicationServer
• [5] UriAwareCommandHandler
• [5] TreeProps
• [5] Tree
• [5] ThemeService
• [5] TabBarDecorator
• [5] QuickAccessRegistry
• [5] PreferenceSchemaProvider
• [5] PreferenceProvider
• [5] OpenerOptions
• [5] MaybeArray
• [5] FrontendApplicationConfig
• [5] FileSystemPreferences
• [5] FileStatNode
• [5] EditorWidget
• [5] DiffUris
• [5] Dialog
• [5] ColorRegistry
• [5] codicon
• [4] WidgetOpenerOptions
• [4] WidgetDecoration
• [4] VSCodeContextKeyService
• [4] VariableContribution
• [4] UTF8
• [4] UriCommandHandler
• [4] TreeDecoration
• [4] TabBarToolbarRegistry
• [4] RecursivePartial
• [4] ReadableStreamEvents
• [4] PreferenceSchema
• [4] Path
• [4] OpenHandler
• [4] Navigatable
• [4] MessagingService
• [4] MAIN_MENU_BAR
• [4] KeyCode
• [4] JSONValue
• [4] JsonSchemaContribution
• [4] JsonRpcConnectionHandler
• [4] IStandaloneThemeService
• [4] ILanguageService
• [4] IJSONSchema
• [4] ICodeEditorService
• [4] ICodeEditor
• [4] FileDialogService
• [4] ExpandableTreeNode
• [4] DiffNavigator
• [4] DepthFirstTreeIterator
• [4] defaultTreeProps
• [4] ContextMenuRenderer
• [4] ContextKey
• [4] ConnectionHandler
• [4] CommandService
• [4] CommandHandler
• [4] ColorContribution
• [4] Color
• [4] codiconArray
• [4] ClipboardService
• [4] BaseWidget
• [3] WindowService
• [3] WaitUntilEvent
• [3] UriSelection
• [3] TreeLabelProvider
• [3] Title
• [3] TerminalProcess
• [3] SUPPORTED_ENCODINGS
• [3] StatusBarAlignment
• [3] StatusBar
• [3] StatefulWidget
• [3] Resource
• [3] Registry
• [3] QuickPickSeparator
• [3] ProblemManager
• [3] PreferenceProxy
• [3] PreferenceContribution
• [3] OpenFileDialogProps
• [3] NavigatableWidget
• [3] Mutable
• [3] MockEnvVariablesServerImpl
• [3] MimeService
• [3] MessageClient
• [3] Location
• [3] Key
• [3] JsonRpcServer
• [3] JsonRpcProxyFactory
• [3] JsonRpcProxy
• [3] ITextModelService
• [3] ITextModel
• [3] IInstantiationService
• [3] IDisposable
• [3] IContextMenuService
• [3] IContextKeyService
• [3] ICommandService
• [3] FrontendApplicationStateService
• [3] FileNode
• [3] EncodingService
• [3] EDITOR_CONTEXT_MENU
• [3] DefaultUriLabelProviderContribution
• [3] createTreeContainer
• [3] createPreferenceProxy
• [3] cancelled
• [3] CancellationTokenSource
• [3] ApplicationShellLayoutMigration
• [3] AbstractViewContribution
• [3] AbstractTreeDecoratorService
• [2] WorkspaceSymbolParams
• [2] WidgetDescription
• [2] VariableRegistry
• [2] unmanaged
• [2] TreeModelImpl
• [2] TreeImpl
• [2] TextEdit
• [2] TextDocumentSaveReason
• [2] SymbolInformation
• [2] StrictEditorTextFocusContext
• [2] StandaloneCommandService
• [2] SnippetParser
• [2] SingleTextInputDialog
• [2] SelectionCommandHandler
• [2] SaveResourceService
• [2] SaveOptions
• [2] SaveableSource
• [2] ResourceVersion
• [2] ResourceResolver
• [2] ResourceProvider
• [2] ResourceError
• [2] ReadableStream
• [2] Readable
• [2] QuickPickValue
• [2] QuickPicks
• [2] QuickAccessProvider
• [2] ProgressService
• [2] PreferenceResolveResult
• [2] PreferenceChangeEvent
• [2] NotificationManager
• [2] NodeProps
• [2] newWriteableStream
• [2] NavigatableWidgetOptions
• [2] multiInject
• [2] MonacoWorkspace
• [2] MonacoEditorModel
• [2] MockOpenerService
• [2] messagingBackendModule
• [2] MessageType
• [2] LocalStorageService
• [2] Language
• [2] Keybinding
• [2] JsonSchemaRegisterContext
• [2] isFirefox
• [2] isCancelled
• [2] isBasicWasmSupported
• [2] IReference
• [2] IQuickAccessRegistry
• [2] ipcRenderer
• [2] InMemoryResources
• [2] ILanguageFeaturesService
• [2] FormatType
• [2] filterItems
• [2] FileTreeModel
• [2] FileSystemUtils
• [2] FileSystemProviderCapabilities
• [2] FileSystemCommands
• [2] FileServiceContribution
• [2] FilepathBreadcrumbsContribution
• [2] FileOperationError
• [2] FileDownloadCommands
• [2] FileChangeType
• [2] Extensions
• [2] EnvironmentUtils
• [2] Endpoint
• [2] EndOfLineSequence
• [2] EncodingRegistry
• [2] EditorPreferenceChange
• [2] EditorOpenerOptions
• [2] EditorMainMenu
• [2] editorGeneratedPreferenceProperties
• [2] EditorCommands
• [2] DirNode
• [2] DidChangeLabelEvent
• [2] DialogProps
• [2] DEFAULT_SUPPORTED_API_VERSION
• [2] deepmerge
• [2] deepClone
• [2] decorate
• [2] CompressionToggle
• [2] CommonMenus
• [2] CommandLineOptions
• [2] ColorDefaults
• [2] CliContribution
• [2] BreadcrumbsContribution
• [2] Breadcrumb
• [2] bindViewContribution
• [2] bindLogger
• [2] BinaryBufferReadableStream
• [2] backendApplicationModule
• [2] BackendApplicationConfig
• [2] BackendApplication
• [2] ApplicationError
• [2] AbstractDialog
• [1] WriteableStream
• [1] WorkspaceVariableContribution
• [1] WorkspaceUriLabelProviderContribution
• [1] WorkspaceData
• [1] WorkspaceCommands
• [1] WidgetOpenMode
• [1] WidgetOpenHandler
• [1] WebSocketChannelConnection
• [1] WebContents
• [1] webContents
• [1] ViewContainer
• [1] Variable
• [1] UTF8_with_bom
• [1] USLayoutResolvedKeybinding
• [1] UserStorageUri
• [1] UserSettingsLabelProvider
• [1] URIIconReference
• [1] URI
• [1] Uri
• [1] unreachable
• [1] UILabelProvider
• [1] TreeWidgetSelection
• [1] TreeModel
• [1] TreeContainerProps
• [1] TreeCompressionService
• [1] transform
• [1] TrackedRangeStickiness
• [1] TokenizationSupportAdapter
• [1] TokenizationRegistry
• [1] toAnchor
• [1] timeoutReject
• [1] timeout
• [1] ThemeServiceSymbol
• [1] Theme
• [1] TheiaContextKeyService
• [1] TextEditorSelection
• [1] TextEditorProvider
• [1] TextEditorDocument
• [1] TextEditor
• [1] TextDocumentContentChangeDelta
• [1] TestWebSocketChannel
• [1] TernarySearchTree
• [1] TerminalProcessOptions
• [1] TerminalProcessFactory
• [1] TaskTerminalProcess
• [1] StandaloneThemeService
• [1] StandaloneGotoSymbolQuickAccessProvider
• [1] StandaloneGotoLineQuickAccessProvider
• [1] StandaloneEditor
• [1] StandaloneDiffEditor
• [1] StandaloneConfigurationService
• [1] StandaloneCodeEditorService
• [1] StandaloneCodeEditor
• [1] SingleTextInputDialogProps
• [1] SimpleKeybinding
• [1] ShellCommandBuilder
• [1] shell
• [1] setSnippetSuggestSupport
• [1] setEnabled
• [1] session
• [1] ServiceIdentifier
• [1] ServiceCollection
• [1] SELECTED_CLASS
• [1] ScopedValueStore
• [1] SaveDialogOptions
• [1] SaveableWidget
• [1] Router
• [1] RGBA
• [1] retry
• [1] Response
• [1] ResourceSaveOptions
• [1] ResourceEncoding
• [1] ResourceContextKey
• [1] ResolvedKeybinding
• [1] Request
• [1] rendering
• [1] registerConfiguredLanguageAssociation
• [1] ReferenceCollection
• [1] Reference
• [1] rebuild
• [1] ReadonlyJSONValue
• [1] RawProcessFactory
• [1] RawProcess
• [1] QuickPickItemOrSeparator
• [1] QuickInputController
• [1] QuickInputButton
• [1] QuickAccessProviderDescriptor
• [1] QuickAccessController
• [1] ProgressUpdate
• [1] ProgressMessage
• [1] Progress
• [1] ProcessUtils
• [1] ProcessErrorEvent
• [1] Prioritizeable
• [1] PreferenceValidationService
• [1] PreferenceProxyFactory
• [1] PreferenceProviderDataChange
• [1] PreferenceLanguageOverrideService
• [1] PreferenceDataProperty
• [1] PreferenceChange
• [1] PlainMessage
• [1] peekStream
• [1] peekReadable
• [1] parseArgs
• [1] Panel
• [1] OVSXClient
• [1] OVERRIDE_PROPERTY_PATTERN
• [1] OutlineViewService
• [1] OutlineTreeDecorator
• [1] OutlineSymbolInformationNode
• [1] OpenInternalOptions
• [1] OpenExternalOptions
• [1] OpenEditorsTreeDecorator
• [1] OpenEditorNode
• [1] OpenDialogOptions
• [1] nullToUndefined
• [1] notifications
• [1] NavigatorTreeDecorator
• [1] NavigatorContextMenu
• [1] NavigatableWidgetOpenHandler
• [1] MultiRingBuffer
• [1] MonacoTextModelService
• [1] MonacoOpenerService
• [1] MonacoKeyCode
• [1] MonacoDiffNavigator
• [1] MonacoColor
• [1] MimeAssociation
• [1] messagingFrontendModule
• [1] messages
• [1] MessageOptions
• [1] MessageLoop
• [1] MessageConnection
• [1] MenuRegistry
• [1] MenuItemAction
• [1] MenuId
• [1] MenuAction
• [1] Menu
• [1] MaybeNull
• [1] loggerFrontendModule
• [1] loggerBackendModule
• [1] Loggable
• [1] Log
• [1] LocalizationManager
• [1] Localization
• [1] List
• [1] Keystroke
• [1] KeySequence
• [1] KeyModifier
• [1] KeybindingsRegistry
• [1] JSONObject
• [1] JSONExt
• [1] ITextSnapshot
• [1] ITextResourcePropertiesService
• [1] ITextModelUpdateOptions
• [1] ITextModelContentProvider
• [1] ITextBufferFactory
• [1] IStandaloneTheme
• [1] IStandaloneEditorConstructionOptions
• [1] IStandaloneDiffEditor
• [1] isReadableStream
• [1] isReadableBufferedStream
• [1] isIMenuItem
• [1] isEmpty
• [1] isChrome
• [1] IResourceEditorInput
• [1] IResolvedTextEditorModel
• [1] IQuickPickItemWithResource
• [1] IQuickPickItem
• [1] IQuickInputStyles
• [1] IQuickInputService
• [1] IQuickInputOptions
• [1] IQuickAccessController
• [1] IpcMainEvent
• [1] ipcMain
• [1] IPCEntryPoint
• [1] IPCConnectionProvider
• [1] IOutlineModelService
• [1] IOpenerService
• [1] IModelService
• [1] IMatch
• [1] IListVirtualDelegate
• [1] IListRenderer
• [1] IListOptions
• [1] IKeybindingService
• [1] IIdentifiedSingleEditOperation
• [1] IEditorWorkerService
• [1] IDiffNavigatorOptions
• [1] IDiffEditorConstructionOptions
• [1] IContextMenuDelegate
• [1] IContext
• [1] IConfigurationService
• [1] IConfigurationChangeEvent
• [1] ICommandEvent
• [1] IBulkEditService
• [1] HttpOpenHandlerOptions
• [1] HSLA
• [1] getColorRegistry
• [1] frontendApplicationModule
• [1] FormattingMode
• [1] FormattingConflicts
• [1] FOCUS_CLASS
• [1] FindMatchesOptions
• [1] findMatches
• [1] FindMatch
• [1] FileTree
• [1] FileSystemProvider
• [1] FileSystemFrontendContribution
• [1] FileSystemConfiguration
• [1] FilepathBreadcrumbClassNameFactory
• [1] FilepathBreadcrumb
• [1] FileOperationResult
• [1] FileFilter
• [1] FileDialogTreeFilters
• [1] FileDeleteOptions
• [1] FileChangesEvent
• [1] extract
• [1] ErrorTransformer
• [1] EncodingMode
• [1] ElementExt
• [1] electronMainApplicationModule
• [1] ElectronMainApplicationGlobals
• [1] ElectronMainApplication
• [1] ElectronEvent
• [1] ElectronAcceleratorLabelProvider
• [1] EditorExtensionsRegistry
• [1] DocumentSymbol
• [1] DocumentRangeFormattingEditProvider
• [1] DocumentFormattingEditProvider
• [1] DiskFileSystemProvider
• [1] Dimension
• [1] DiffNavigatorProvider
• [1] DiagnosticRelatedInformation
• [1] DeltaDecorationParams
• [1] DelegatingFileSystemProvider
• [1] DEFAULT_WINDOW_HASH
• [1] DEFAULT_SCROLL_OPTIONS
• [1] DecorationStyle
• [1] DecorationsService
• [1] DecodeStreamResult
• [1] DataTransformer
• [1] CustomEditorWidget
• [1] CurrentWidgetCommandAdapter
• [1] createTextBufferFactoryFromStream
• [1] createIconButton
• [1] createFileTreeContainer
• [1] ContextKeyExpression
• [1] ContextKeyExpr
• [1] ContextKeyChangeEvent
• [1] consumeStream
• [1] ConnectionErrorHandler
• [1] ConfigurationTarget
• [1] Configuration
• [1] CompressedTreeModel
• [1] CompressedExpansionService
• [1] CompletionItemProvider
• [1] CommandsRegistry
• [1] ColorValue
• [1] ColorDefinition
• [1] CliManager
• [1] clearConfiguredLanguageAssociations
• [1] checkCancelled
• [1] CancellationError
• [1] canceled
• [1] BuiltinThemeProvider
• [1] bindPreferenceService
• [1] bindMockPreferenceProviders
• [1] BinaryBufferWriteableStream
• [1] BinaryBufferReadableBufferedStream
• [1] BinaryBufferReadable
• [1] BaseStat
• [1] BackendApplicationServer
• [1] BackendApplicationConfigProvider
• [1] AsyncEmitter
• [1] ApplicationShellLayoutMigrationContext
• [1] ApplicationPackageOptions
• [1] ApplicationPackageManager
• [1] Application
• [1] animationFrame
• [1] addClipboardListener
• [1] AbstractContextKeyService

[Niklas-Dahlquist]

Would be good to know when the API was last changed, could be used as a maturity level for the APIs and make it easier to decide what should be considered as stable.