@types/node/inspector.d.ts

// tslint:disable-next-line:dt-header
// Type definitions for inspector

// These definitions are auto-generated.
// Please see https://github.com/DefinitelyTyped/DefinitelyTyped/pull/19330
// for more information.

/**
 * The inspector module provides an API for interacting with the V8 inspector.
 */
declare module "inspector" {
    import { EventEmitter } from 'events';

    interface InspectorNotification<T> {
        method: string;
        params: T;
    }

    namespace Console {
        /**
         * Console message.
         */
        interface ConsoleMessage {
            /**
             * Message source.
             */
            source: string;
            /**
             * Message severity.
             */
            level: string;
            /**
             * Message text.
             */
            text: string;
            /**
             * URL of the message origin.
             */
            url?: string;
            /**
             * Line number in the resource that generated this message (1-based).
             */
            line?: number;
            /**
             * Column number in the resource that generated this message (1-based).
             */
            column?: number;
        }

        interface MessageAddedEventDataType {
            /**
             * Console message that has been added.
             */
            message: ConsoleMessage;
        }
    }

    namespace Debugger {
        /**
         * Breakpoint identifier.
         */
        type BreakpointId = string;

        /**
         * Call frame identifier.
         */
        type CallFrameId = string;

        /**
         * Location in the source code.
         */
        interface Location {
            /**
             * Script identifier as reported in the `Debugger.scriptParsed`.
             */
            scriptId: Runtime.ScriptId;
            /**
             * Line number in the script (0-based).
             */
            lineNumber: number;
            /**
             * Column number in the script (0-based).
             */
            columnNumber?: number;
        }

        /**
         * Location in the source code.
         * @experimental
         */
        interface ScriptPosition {
            lineNumber: number;
            columnNumber: number;
        }

        /**
         * JavaScript call frame. Array of call frames form the call stack.
         */
        interface CallFrame {
            /**
             * Call frame identifier. This identifier is only valid while the virtual machine is paused.
             */
            callFrameId: CallFrameId;
            /**
             * Name of the JavaScript function called on this call frame.
             */
            functionName: string;
            /**
             * Location in the source code.
             */
            functionLocation?: Location;
            /**
             * Location in the source code.
             */
            location: Location;
            /**
             * JavaScript script name or url.
             */
            url: string;
            /**
             * Scope chain for this call frame.
             */
            scopeChain: Scope[];
            /**
             * `this` object for this call frame.
             */
            this: Runtime.RemoteObject;
            /**
             * The value being returned, if the function is at return point.
             */
            returnValue?: Runtime.RemoteObject;
        }

        /**
         * Scope description.
         */
        interface Scope {
            /**
             * Scope type.
             */
            type: string;
            /**
             * Object representing the scope. For `global` and `with` scopes it represents the actual
             * object; for the rest of the scopes, it is artificial transient object enumerating scope
             * variables as its properties.
             */
            object: Runtime.RemoteObject;
            name?: string;
            /**
             * Location in the source code where scope starts
             */
            startLocation?: Location;
            /**
             * Location in the source code where scope ends
             */
            endLocation?: Location;
        }

        /**
         * Search match for resource.
         */
        interface SearchMatch {
            /**
             * Line number in resource content.
             */
            lineNumber: number;
            /**
             * Line with match content.
             */
            lineContent: string;
        }

        interface BreakLocation {
            /**
             * Script identifier as reported in the `Debugger.scriptParsed`.
             */
            scriptId: Runtime.ScriptId;
            /**
             * Line number in the script (0-based).
             */
            lineNumber: number;
            /**
             * Column number in the script (0-based).
             */
            columnNumber?: number;
            type?: string;
        }

        interface ContinueToLocationParameterType {
            /**
             * Location to continue to.
             */
            location: Location;
            targetCallFrames?: string;
        }

        interface EvaluateOnCallFrameParameterType {
            /**
             * Call frame identifier to evaluate on.
             */
            callFrameId: CallFrameId;
            /**
             * Expression to evaluate.
             */
            expression: string;
            /**
             * String object group name to put result into (allows rapid releasing resulting object handles
             * using `releaseObjectGroup`).
             */
            objectGroup?: string;
            /**
             * Specifies whether command line API should be available to the evaluated expression, defaults
             * to false.
             */
            includeCommandLineAPI?: boolean;
            /**
             * In silent mode exceptions thrown during evaluation are not reported and do not pause
             * execution. Overrides `setPauseOnException` state.
             */
            silent?: boolean;
            /**
             * Whether the result is expected to be a JSON object that should be sent by value.
             */
            returnByValue?: boolean;
            /**
             * Whether preview should be generated for the result.
             * @experimental
             */
            generatePreview?: boolean;
            /**
             * Whether to throw an exception if side effect cannot be ruled out during evaluation.
             */
            throwOnSideEffect?: boolean;
            /**
             * Terminate execution after timing out (number of milliseconds).
             * @experimental
             */
            timeout?: Runtime.TimeDelta;
        }

        interface GetPossibleBreakpointsParameterType {
            /**
             * Start of range to search possible breakpoint locations in.
             */
            start: Location;
            /**
             * End of range to search possible breakpoint locations in (excluding). When not specified, end
             * of scripts is used as end of range.
             */
            end?: Location;
            /**
             * Only consider locations which are in the same (non-nested) function as start.
             */
            restrictToFunction?: boolean;
        }

        interface GetScriptSourceParameterType {
            /**
             * Id of the script to get source for.
             */
            scriptId: Runtime.ScriptId;
        }

        interface GetStackTraceParameterType {
            stackTraceId: Runtime.StackTraceId;
        }

        interface PauseOnAsyncCallParameterType {
            /**
             * Debugger will pause when async call with given stack trace is started.
             */
            parentStackTraceId: Runtime.StackTraceId;
        }

        interface RemoveBreakpointParameterType {
            breakpointId: BreakpointId;
        }

        interface RestartFrameParameterType {
            /**
             * Call frame identifier to evaluate on.
             */
            callFrameId: CallFrameId;
        }

        interface SearchInContentParameterType {
            /**
             * Id of the script to search in.
             */
            scriptId: Runtime.ScriptId;
            /**
             * String to search for.
             */
            query: string;
            /**
             * If true, search is case sensitive.
             */
            caseSensitive?: boolean;
            /**
             * If true, treats string parameter as regex.
             */
            isRegex?: boolean;
        }

        interface SetAsyncCallStackDepthParameterType {
            /**
             * Maximum depth of async call stacks. Setting to `0` will effectively disable collecting async
             * call stacks (default).
             */
            maxDepth: number;
        }

        interface SetBlackboxPatternsParameterType {
            /**
             * Array of regexps that will be used to check script url for blackbox state.
             */
            patterns: string[];
        }

        interface SetBlackboxedRangesParameterType {
            /**
             * Id of the script.
             */
            scriptId: Runtime.ScriptId;
            positions: ScriptPosition[];
        }

        interface SetBreakpointParameterType {
            /**
             * Location to set breakpoint in.
             */
            location: Location;
            /**
             * Expression to use as a breakpoint condition. When specified, debugger will only stop on the
             * breakpoint if this expression evaluates to true.
             */
            condition?: string;
        }

        interface SetBreakpointByUrlParameterType {
            /**
             * Line number to set breakpoint at.
             */
            lineNumber: number;
            /**
             * URL of the resources to set breakpoint on.
             */
            url?: string;
            /**
             * Regex pattern for the URLs of the resources to set breakpoints on. Either `url` or
             * `urlRegex` must be specified.
             */
            urlRegex?: string;
            /**
             * Script hash of the resources to set breakpoint on.
             */
            scriptHash?: string;
            /**
             * Offset in the line to set breakpoint at.
             */
            columnNumber?: number;
            /**
             * Expression to use as a breakpoint condition. When specified, debugger will only stop on the
             * breakpoint if this expression evaluates to true.
             */
            condition?: string;
        }

        interface SetBreakpointOnFunctionCallParameterType {
            /**
             * Function object id.
             */
            objectId: Runtime.RemoteObjectId;
            /**
             * Expression to use as a breakpoint condition. When specified, debugger will
             * stop on the breakpoint if this expression evaluates to true.
             */
            condition?: string;
        }

        interface SetBreakpointsActiveParameterType {
            /**
             * New value for breakpoints active state.
             */
            active: boolean;
        }

        interface SetPauseOnExceptionsParameterType {
            /**
             * Pause on exceptions mode.
             */
            state: string;
        }

        interface SetReturnValueParameterType {
            /**
             * New return value.
             */
            newValue: Runtime.CallArgument;
        }

        interface SetScriptSourceParameterType {
            /**
             * Id of the script to edit.
             */
            scriptId: Runtime.ScriptId;
            /**
             * New content of the script.
             */
            scriptSource: string;
            /**
             * If true the change will not actually be applied. Dry run may be used to get result
             * description without actually modifying the code.
             */
            dryRun?: boolean;
        }

        interface SetSkipAllPausesParameterType {
            /**
             * New value for skip pauses state.
             */
            skip: boolean;
        }

        interface SetVariableValueParameterType {
            /**
             * 0-based number of scope as was listed in scope chain. Only 'local', 'closure' and 'catch'
             * scope types are allowed. Other scopes could be manipulated manually.
             */
            scopeNumber: number;
            /**
             * Variable name.
             */
            variableName: string;
            /**
             * New variable value.
             */
            newValue: Runtime.CallArgument;
            /**
             * Id of callframe that holds variable.
             */
            callFrameId: CallFrameId;
        }

        interface StepIntoParameterType {
            /**
             * Debugger will issue additional Debugger.paused notification if any async task is scheduled
             * before next pause.
             * @experimental
             */
            breakOnAsyncCall?: boolean;
        }

        interface EnableReturnType {
            /**
             * Unique identifier of the debugger.
             * @experimental
             */
            debuggerId: Runtime.UniqueDebuggerId;
        }

        interface EvaluateOnCallFrameReturnType {
            /**
             * Object wrapper for the evaluation result.
             */
            result: Runtime.RemoteObject;
            /**
             * Exception details.
             */
            exceptionDetails?: Runtime.ExceptionDetails;
        }

        interface GetPossibleBreakpointsReturnType {
            /**
             * List of the possible breakpoint locations.
             */
            locations: BreakLocation[];
        }

        interface GetScriptSourceReturnType {
            /**
             * Script source.
             */
            scriptSource: string;
        }

        interface GetStackTraceReturnType {
            stackTrace: Runtime.StackTrace;
        }

        interface RestartFrameReturnType {
            /**
             * New stack trace.
             */
            callFrames: CallFrame[];
            /**
             * Async stack trace, if any.
             */
            asyncStackTrace?: Runtime.StackTrace;
            /**
             * Async stack trace, if any.
             * @experimental
             */
            asyncStackTraceId?: Runtime.StackTraceId;
        }

        interface SearchInContentReturnType {
            /**
             * List of search matches.
             */
            result: SearchMatch[];
        }

        interface SetBreakpointReturnType {
            /**
             * Id of the created breakpoint for further reference.
             */
            breakpointId: BreakpointId;
            /**
             * Location this breakpoint resolved into.
             */
            actualLocation: Location;
        }

        interface SetBreakpointByUrlReturnType {
            /**
             * Id of the created breakpoint for further reference.
             */
            breakpointId: BreakpointId;
            /**
             * List of the locations this breakpoint resolved into upon addition.
             */
            locations: Location[];
        }

        interface SetBreakpointOnFunctionCallReturnType {
            /**
             * Id of the created breakpoint for further reference.
             */
            breakpointId: BreakpointId;
        }

        interface SetScriptSourceReturnType {
            /**
             * New stack trace in case editing has happened while VM was stopped.
             */
            callFrames?: CallFrame[];
            /**
             * Whether current call stack  was modified after applying the changes.
             */
            stackChanged?: boolean;
            /**
             * Async stack trace, if any.
             */
            asyncStackTrace?: Runtime.StackTrace;
            /**
             * Async stack trace, if any.
             * @experimental
             */
            asyncStackTraceId?: Runtime.StackTraceId;
            /**
             * Exception details if any.
             */
            exceptionDetails?: Runtime.ExceptionDetails;
        }

        interface BreakpointResolvedEventDataType {
            /**
             * Breakpoint unique identifier.
             */
            breakpointId: BreakpointId;
            /**
             * Actual breakpoint location.
             */
            location: Location;
        }

        interface PausedEventDataType {
            /**
             * Call stack the virtual machine stopped on.
             */
            callFrames: CallFrame[];
            /**
             * Pause reason.
             */
            reason: string;
            /**
             * Object containing break-specific auxiliary properties.
             */
            data?: {};
            /**
             * Hit breakpoints IDs
             */
            hitBreakpoints?: string[];
            /**
             * Async stack trace, if any.
             */
            asyncStackTrace?: Runtime.StackTrace;
            /**
             * Async stack trace, if any.
             * @experimental
             */
            asyncStackTraceId?: Runtime.StackTraceId;
            /**
             * Just scheduled async call will have this stack trace as parent stack during async execution.
             * This field is available only after `Debugger.stepInto` call with `breakOnAsynCall` flag.
             * @experimental
             */
            asyncCallStackTraceId?: Runtime.StackTraceId;
        }

        interface ScriptFailedToParseEventDataType {
            /**
             * Identifier of the script parsed.
             */
            scriptId: Runtime.ScriptId;
            /**
             * URL or name of the script parsed (if any).
             */
            url: string;
            /**
             * Line offset of the script within the resource with given URL (for script tags).
             */
            startLine: number;
            /**
             * Column offset of the script within the resource with given URL.
             */
            startColumn: number;
            /**
             * Last line of the script.
             */
            endLine: number;
            /**
             * Length of the last line of the script.
             */
            endColumn: number;
            /**
             * Specifies script creation context.
             */
            executionContextId: Runtime.ExecutionContextId;
            /**
             * Content hash of the script.
             */
            hash: string;
            /**
             * Embedder-specific auxiliary data.
             */
            executionContextAuxData?: {};
            /**
             * URL of source map associated with script (if any).
             */
            sourceMapURL?: string;
            /**
             * True, if this script has sourceURL.
             */
            hasSourceURL?: boolean;
            /**
             * True, if this script is ES6 module.
             */
            isModule?: boolean;
            /**
             * This script length.
             */
            length?: number;
            /**
             * JavaScript top stack frame of where the script parsed event was triggered if available.
             * @experimental
             */
            stackTrace?: Runtime.StackTrace;
        }

        interface ScriptParsedEventDataType {
            /**
             * Identifier of the script parsed.
             */
            scriptId: Runtime.ScriptId;
            /**
             * URL or name of the script parsed (if any).
             */
            url: string;
            /**
             * Line offset of the script within the resource with given URL (for script tags).
             */
            startLine: number;
            /**
             * Column offset of the script within the resource with given URL.
             */
            startColumn: number;
            /**
             * Last line of the script.
             */
            endLine: number;
            /**
             * Length of the last line of the script.
             */
            endColumn: number;
            /**
             * Specifies script creation context.
             */
            executionContextId: Runtime.ExecutionContextId;
            /**
             * Content hash of the script.
             */
            hash: string;
            /**
             * Embedder-specific auxiliary data.
             */
            executionContextAuxData?: {};
            /**
             * True, if this script is generated as a result of the live edit operation.
             * @experimental
             */
            isLiveEdit?: boolean;
            /**
             * URL of source map associated with script (if any).
             */
            sourceMapURL?: string;
            /**
             * True, if this script has sourceURL.
             */
            hasSourceURL?: boolean;
            /**
             * True, if this script is ES6 module.
             */
            isModule?: boolean;
            /**
             * This script length.
             */
            length?: number;
            /**
             * JavaScript top stack frame of where the script parsed event was triggered if available.
             * @experimental
             */
            stackTrace?: Runtime.StackTrace;
        }
    }

    namespace HeapProfiler {
        /**
         * Heap snapshot object id.
         */
        type HeapSnapshotObjectId = string;

        /**
         * Sampling Heap Profile node. Holds callsite information, allocation statistics and child nodes.
         */
        interface SamplingHeapProfileNode {
            /**
             * Function location.
             */
            callFrame: Runtime.CallFrame;
            /**
             * Allocations size in bytes for the node excluding children.
             */
            selfSize: number;
            /**
             * Child nodes.
             */
            children: SamplingHeapProfileNode[];
        }

        /**
         * Profile.
         */
        interface SamplingHeapProfile {
            head: SamplingHeapProfileNode;
        }

        interface AddInspectedHeapObjectParameterType {
            /**
             * Heap snapshot object id to be accessible by means of $x command line API.
             */
            heapObjectId: HeapSnapshotObjectId;
        }

        interface GetHeapObjectIdParameterType {
            /**
             * Identifier of the object to get heap object id for.
             */
            objectId: Runtime.RemoteObjectId;
        }

        interface GetObjectByHeapObjectIdParameterType {
            objectId: HeapSnapshotObjectId;
            /**
             * Symbolic group name that can be used to release multiple objects.
             */
            objectGroup?: string;
        }

        interface StartSamplingParameterType {
            /**
             * Average sample interval in bytes. Poisson distribution is used for the intervals. The
             * default value is 32768 bytes.
             */
            samplingInterval?: number;
        }

        interface StartTrackingHeapObjectsParameterType {
            trackAllocations?: boolean;
        }

        interface StopTrackingHeapObjectsParameterType {
            /**
             * If true 'reportHeapSnapshotProgress' events will be generated while snapshot is being taken
             * when the tracking is stopped.
             */
            reportProgress?: boolean;
        }

        interface TakeHeapSnapshotParameterType {
            /**
             * If true 'reportHeapSnapshotProgress' events will be generated while snapshot is being taken.
             */
            reportProgress?: boolean;
        }

        interface GetHeapObjectIdReturnType {
            /**
             * Id of the heap snapshot object corresponding to the passed remote object id.
             */
            heapSnapshotObjectId: HeapSnapshotObjectId;
        }

        interface GetObjectByHeapObjectIdReturnType {
            /**
             * Evaluation result.
             */
            result: Runtime.RemoteObject;
        }

        interface GetSamplingProfileReturnType {
            /**
             * Return the sampling profile being collected.
             */
            profile: SamplingHeapProfile;
        }

        interface StopSamplingReturnType {
            /**
             * Recorded sampling heap profile.
             */
            profile: SamplingHeapProfile;
        }

        interface AddHeapSnapshotChunkEventDataType {
            chunk: string;
        }

        interface HeapStatsUpdateEventDataType {
            /**
             * An array of triplets. Each triplet describes a fragment. The first integer is the fragment
             * index, the second integer is a total count of objects for the fragment, the third integer is
             * a total size of the objects for the fragment.
             */
            statsUpdate: number[];
        }

        interface LastSeenObjectIdEventDataType {
            lastSeenObjectId: number;
            timestamp: number;
        }

        interface ReportHeapSnapshotProgressEventDataType {
            done: number;
            total: number;
            finished?: boolean;
        }
    }

    namespace Profiler {
        /**
         * Profile node. Holds callsite information, execution statistics and child nodes.
         */
        interface ProfileNode {
            /**
             * Unique id of the node.
             */
            id: number;
            /**
             * Function location.
             */
            callFrame: Runtime.CallFrame;
            /**
             * Number of samples where this node was on top of the call stack.
             */
            hitCount?: number;
            /**
             * Child node ids.
             */
            children?: number[];
            /**
             * The reason of being not optimized. The function may be deoptimized or marked as don't
             * optimize.
             */
            deoptReason?: string;
            /**
             * An array of source position ticks.
             */
            positionTicks?: PositionTickInfo[];
        }

        /**
         * Profile.
         */
        interface Profile {
            /**
             * The list of profile nodes. First item is the root node.
             */
            nodes: ProfileNode[];
            /**
             * Profiling start timestamp in microseconds.
             */
            startTime: number;
            /**
             * Profiling end timestamp in microseconds.
             */
            endTime: number;
            /**
             * Ids of samples top nodes.
             */
            samples?: number[];
            /**
             * Time intervals between adjacent samples in microseconds. The first delta is relative to the
             * profile startTime.
             */
            timeDeltas?: number[];
        }

        /**
         * Specifies a number of samples attributed to a certain source position.
         */
        interface PositionTickInfo {
            /**
             * Source line number (1-based).
             */
            line: number;
            /**
             * Number of samples attributed to the source line.
             */
            ticks: number;
        }

        /**
         * Coverage data for a source range.
         */
        interface CoverageRange {
            /**
             * JavaScript script source offset for the range start.
             */
            startOffset: number;
            /**
             * JavaScript script source offset for the range end.
             */
            endOffset: number;
            /**
             * Collected execution count of the source range.
             */
            count: number;
        }

        /**
         * Coverage data for a JavaScript function.
         */
        interface FunctionCoverage {
            /**
             * JavaScript function name.
             */
            functionName: string;
            /**
             * Source ranges inside the function with coverage data.
             */
            ranges: CoverageRange[];
            /**
             * Whether coverage data for this function has block granularity.
             */
            isBlockCoverage: boolean;
        }

        /**
         * Coverage data for a JavaScript script.
         */
        interface ScriptCoverage {
            /**
             * JavaScript script id.
             */
            scriptId: Runtime.ScriptId;
            /**
             * JavaScript script name or url.
             */
            url: string;
            /**
             * Functions contained in the script that has coverage data.
             */
            functions: FunctionCoverage[];
        }

        /**
         * Describes a type collected during runtime.
         * @experimental
         */
        interface TypeObject {
            /**
             * Name of a type collected with type profiling.
             */
            name: string;
        }

        /**
         * Source offset and types for a parameter or return value.
         * @experimental
         */
        interface TypeProfileEntry {
            /**
             * Source offset of the parameter or end of function for return values.
             */
            offset: number;
            /**
             * The types for this parameter or return value.
             */
            types: TypeObject[];
        }

        /**
         * Type profile data collected during runtime for a JavaScript script.
         * @experimental
         */
        interface ScriptTypeProfile {
            /**
             * JavaScript script id.
             */
            scriptId: Runtime.ScriptId;
            /**
             * JavaScript script name or url.
             */
            url: string;
            /**
             * Type profile entries for parameters and return values of the functions in the script.
             */
            entries: TypeProfileEntry[];
        }

        interface SetSamplingIntervalParameterType {
            /**
             * New sampling interval in microseconds.
             */
            interval: number;
        }

        interface StartPreciseCoverageParameterType {
            /**
             * Collect accurate call counts beyond simple 'covered' or 'not covered'.
             */
            callCount?: boolean;
            /**
             * Collect block-based coverage.
             */
            detailed?: boolean;
        }

        interface GetBestEffortCoverageReturnType {
            /**
             * Coverage data for the current isolate.
             */
            result: ScriptCoverage[];
        }

        interface StopReturnType {
            /**
             * Recorded profile.
             */
            profile: Profile;
        }

        interface TakePreciseCoverageReturnType {
            /**
             * Coverage data for the current isolate.
             */
            result: ScriptCoverage[];
        }

        interface TakeTypeProfileReturnType {
            /**
             * Type profile for all scripts since startTypeProfile() was turned on.
             */
            result: ScriptTypeProfile[];
        }

        interface ConsoleProfileFinishedEventDataType {
            id: string;
            /**
             * Location of console.profileEnd().
             */
            location: Debugger.Location;
            profile: Profile;
            /**
             * Profile title passed as an argument to console.profile().
             */
            title?: string;
        }

        interface ConsoleProfileStartedEventDataType {
            id: string;
            /**
             * Location of console.profile().
             */
            location: Debugger.Location;
            /**
             * Profile title passed as an argument to console.profile().
             */
            title?: string;
        }
    }

    namespace Runtime {
        /**
         * Unique script identifier.
         */
        type ScriptId = string;

        /**
         * Unique object identifier.
         */
        type RemoteObjectId = string;

        /**
         * Primitive value which cannot be JSON-stringified. Includes values `-0`, `NaN`, `Infinity`,
         * `-Infinity`, and bigint literals.
         */
        type UnserializableValue = string;

        /**
         * Mirror object referencing original JavaScript object.
         */
        interface RemoteObject {
            /**
             * Object type.
             */
            type: string;
            /**
             * Object subtype hint. Specified for `object` type values only.
             */
            subtype?: string;
            /**
             * Object class (constructor) name. Specified for `object` type values only.
             */
            className?: string;
            /**
             * Remote object value in case of primitive values or JSON values (if it was requested).
             */
            value?: any;
            /**
             * Primitive value which can not be JSON-stringified does not have `value`, but gets this
             * property.
             */
            unserializableValue?: UnserializableValue;
            /**
             * String representation of the object.
             */
            description?: string;
            /**
             * Unique object identifier (for non-primitive values).
             */
            objectId?: RemoteObjectId;
            /**
             * Preview containing abbreviated property values. Specified for `object` type values only.
             * @experimental
             */
            preview?: ObjectPreview;
            /**
             * @experimental
             */
            customPreview?: CustomPreview;
        }

        /**
         * @experimental
         */
        interface CustomPreview {
            header: string;
            hasBody: boolean;
            formatterObjectId: RemoteObjectId;
            bindRemoteObjectFunctionId: RemoteObjectId;
            configObjectId?: RemoteObjectId;
        }

        /**
         * Object containing abbreviated remote object value.
         * @experimental
         */
        interface ObjectPreview {
            /**
             * Object type.
             */
            type: string;
            /**
             * Object subtype hint. Specified for `object` type values only.
             */
            subtype?: string;
            /**
             * String representation of the object.
             */
            description?: string;
            /**
             * True iff some of the properties or entries of the original object did not fit.
             */
            overflow: boolean;
            /**
             * List of the properties.
             */
            properties: PropertyPreview[];
            /**
             * List of the entries. Specified for `map` and `set` subtype values only.
             */
            entries?: EntryPreview[];
        }

        /**
         * @experimental
         */
        interface PropertyPreview {
            /**
             * Property name.
             */
            name: string;
            /**
             * Object type. Accessor means that the property itself is an accessor property.
             */
            type: string;
            /**
             * User-friendly property value string.
             */
            value?: string;
            /**
             * Nested value preview.
             */
            valuePreview?: ObjectPreview;
            /**
             * Object subtype hint. Specified for `object` type values only.
             */
            subtype?: string;
        }

        /**
         * @experimental
         */
        interface EntryPreview {
            /**
             * Preview of the key. Specified for map-like collection entries.
             */
            key?: ObjectPreview;
            /**
             * Preview of the value.
             */
            value: ObjectPreview;
        }

        /**
         * Object property descriptor.
         */
        interface PropertyDescriptor {
            /**
             * Property name or symbol description.
             */
            name: string;
            /**
             * The value associated with the property.
             */
            value?: RemoteObject;
            /**
             * True if the value associated with the property may be changed (data descriptors only).
             */
            writable?: boolean;
            /**
             * A function which serves as a getter for the property, or `undefined` if there is no getter
             * (accessor descriptors only).
             */
            get?: RemoteObject;
            /**
             * A function which serves as a setter for the property, or `undefined` if there is no setter
             * (accessor descriptors only).
             */
            set?: RemoteObject;
            /**
             * True if the type of this property descriptor may be changed and if the property may be
             * deleted from the corresponding object.
             */
            configurable: boolean;
            /**
             * True if this property shows up during enumeration of the properties on the corresponding
             * object.
             */
            enumerable: boolean;
            /**
             * True if the result was thrown during the evaluation.
             */
            wasThrown?: boolean;
            /**
             * True if the property is owned for the object.
             */
            isOwn?: boolean;
            /**
             * Property symbol object, if the property is of the `symbol` type.
             */
            symbol?: RemoteObject;
        }

        /**
         * Object internal property descriptor. This property isn't normally visible in JavaScript code.
         */
        interface InternalPropertyDescriptor {
            /**
             * Conventional property name.
             */
            name: string;
            /**
             * The value associated with the property.
             */
            value?: RemoteObject;
        }

        /**
         * Represents function call argument. Either remote object id `objectId`, primitive `value`,
         * unserializable primitive value or neither of (for undefined) them should be specified.
         */
        interface CallArgument {
            /**
             * Primitive value or serializable javascript object.
             */
            value?: any;
            /**
             * Primitive value which can not be JSON-stringified.
             */
            unserializableValue?: UnserializableValue;
            /**
             * Remote object handle.
             */
            objectId?: RemoteObjectId;
        }

        /**
         * Id of an execution context.
         */
        type ExecutionContextId = number;

        /**
         * Description of an isolated world.
         */
        interface ExecutionContextDescription {
            /**
             * Unique id of the execution context. It can be used to specify in which execution context
             * script evaluation should be performed.
             */
            id: ExecutionContextId;
            /**
             * Execution context origin.
             */
            origin: string;
            /**
             * Human readable name describing given context.
             */
            name: string;
            /**
             * Embedder-specific auxiliary data.
             */
            auxData?: {};
        }

        /**
         * Detailed information about exception (or error) that was thrown during script compilation or
         * execution.
         */
        interface ExceptionDetails {
            /**
             * Exception id.
             */
            exceptionId: number;
            /**
             * Exception text, which should be used together with exception object when available.
             */
            text: string;
            /**
             * Line number of the exception location (0-based).
             */
            lineNumber: number;
            /**
             * Column number of the exception location (0-based).
             */
            columnNumber: number;
            /**
             * Script ID of the exception location.
             */
            scriptId?: ScriptId;
            /**
             * URL of the exception location, to be used when the script was not reported.
             */
            url?: string;
            /**
             * JavaScript stack trace if available.
             */
            stackTrace?: StackTrace;
            /**
             * Exception object if available.
             */
            exception?: RemoteObject;
            /**
             * Identifier of the context where exception happened.
             */
            executionContextId?: ExecutionContextId;
        }

        /**
         * Number of milliseconds since epoch.
         */
        type Timestamp = number;

        /**
         * Number of milliseconds.
         */
        type TimeDelta = number;

        /**
         * Stack entry for runtime errors and assertions.
         */
        interface CallFrame {
            /**
             * JavaScript function name.
             */
            functionName: string;
            /**
             * JavaScript script id.
             */
            scriptId: ScriptId;
            /**
             * JavaScript script name or url.
             */
            url: string;
            /**
             * JavaScript script line number (0-based).
             */
            lineNumber: number;
            /**
             * JavaScript script column number (0-based).
             */
            columnNumber: number;
        }

        /**
         * Call frames for assertions or error messages.
         */
        interface StackTrace {
            /**
             * String label of this stack trace. For async traces this may be a name of the function that
             * initiated the async call.
             */
            description?: string;
            /**
             * JavaScript function name.
             */
            callFrames: CallFrame[];
            /**
             * Asynchronous JavaScript stack trace that preceded this stack, if available.
             */
            parent?: StackTrace;
            /**
             * Asynchronous JavaScript stack trace that preceded this stack, if available.
             * @experimental
             */
            parentId?: StackTraceId;
        }

        /**
         * Unique identifier of current debugger.
         * @experimental
         */
        type UniqueDebuggerId = string;

        /**
         * If `debuggerId` is set stack trace comes from another debugger and can be resolved there. This
         * allows to track cross-debugger calls. See `Runtime.StackTrace` and `Debugger.paused` for usages.
         * @experimental
         */
        interface StackTraceId {
            id: string;
            debuggerId?: UniqueDebuggerId;
        }

        interface AwaitPromiseParameterType {
            /**
             * Identifier of the promise.
             */
            promiseObjectId: RemoteObjectId;
            /**
             * Whether the result is expected to be a JSON object that should be sent by value.
             */
            returnByValue?: boolean;
            /**
             * Whether preview should be generated for the result.
             */
            generatePreview?: boolean;
        }

        interface CallFunctionOnParameterType {
            /**
             * Declaration of the function to call.
             */
            functionDeclaration: string;
            /**
             * Identifier of the object to call function on. Either objectId or executionContextId should
             * be specified.
             */
            objectId?: RemoteObjectId;
            /**
             * Call arguments. All call arguments must belong to the same JavaScript world as the target
             * object.
             */
            arguments?: CallArgument[];
            /**
             * In silent mode exceptions thrown during evaluation are not reported and do not pause
             * execution. Overrides `setPauseOnException` state.
             */
            silent?: boolean;
            /**
             * Whether the result is expected to be a JSON object which should be sent by value.
             */
            returnByValue?: boolean;
            /**
             * Whether preview should be generated for the result.
             * @experimental
             */
            generatePreview?: boolean;
            /**
             * Whether execution should be treated as initiated by user in the UI.
             */
            userGesture?: boolean;
            /**
             * Whether execution should `await` for resulting value and return once awaited promise is
             * resolved.
             */
            awaitPromise?: boolean;
            /**
             * Specifies execution context which global object will be used to call function on. Either
             * executionContextId or objectId should be specified.
             */
            executionContextId?: ExecutionContextId;
            /**
             * Symbolic group name that can be used to release multiple objects. If objectGroup is not
             * specified and objectId is, objectGroup will be inherited from object.
             */
            objectGroup?: string;
        }

        interface CompileScriptParameterType {
            /**
             * Expression to compile.
             */
            expression: string;
            /**
             * Source url to be set for the script.
             */
            sourceURL: string;
            /**
             * Specifies whether the compiled script should be persisted.
             */
            persistScript: boolean;
            /**
             * Specifies in which execution context to perform script run. If the parameter is omitted the
             * evaluation will be performed in the context of the inspected page.
             */
            executionContextId?: ExecutionContextId;
        }

        interface EvaluateParameterType {
            /**
             * Expression to evaluate.
             */
            expression: string;
            /**
             * Symbolic group name that can be used to release multiple objects.
             */
            objectGroup?: string;
            /**
             * Determines whether Command Line API should be available during the evaluation.
             */
            includeCommandLineAPI?: boolean;
            /**
             * In silent mode exceptions thrown during evaluation are not reported and do not pause
             * execution. Overrides `setPauseOnException` state.
             */
            silent?: boolean;
            /**
             * Specifies in which execution context to perform evaluation. If the parameter is omitted the
             * evaluation will be performed in the context of the inspected page.
             */
            contextId?: ExecutionContextId;
            /**
             * Whether the result is expected to be a JSON object that should be sent by value.
             */
            returnByValue?: boolean;
            /**
             * Whether preview should be generated for the result.
             * @experimental
             */
            generatePreview?: boolean;
            /**
             * Whether execution should be treated as initiated by user in the UI.
             */
            userGesture?: boolean;
            /**
             * Whether execution should `await` for resulting value and return once awaited promise is
             * resolved.
             */
            awaitPromise?: boolean;
            /**
             * Whether to throw an exception if side effect cannot be ruled out during evaluation.
             * @experimental
             */
            throwOnSideEffect?: boolean;
            /**
             * Terminate execution after timing out (number of milliseconds).
             * @experimental
             */
            timeout?: TimeDelta;
        }

        interface GetPropertiesParameterType {
            /**
             * Identifier of the object to return properties for.
             */
            objectId: RemoteObjectId;
            /**
             * If true, returns properties belonging only to the element itself, not to its prototype
             * chain.
             */
            ownProperties?: boolean;
            /**
             * If true, returns accessor properties (with getter/setter) only; internal properties are not
             * returned either.
             * @experimental
             */
            accessorPropertiesOnly?: boolean;
            /**
             * Whether preview should be generated for the results.
             * @experimental
             */
            generatePreview?: boolean;
        }

        interface GlobalLexicalScopeNamesParameterType {
            /**
             * Specifies in which execution context to lookup global scope variables.
             */
            executionContextId?: ExecutionContextId;
        }

        interface QueryObjectsParameterType {
            /**
             * Identifier of the prototype to return objects for.
             */
            prototypeObjectId: RemoteObjectId;
            /**
             * Symbolic group name that can be used to release the results.
             */
            objectGroup?: string;
        }

        interface ReleaseObjectParameterType {
            /**
             * Identifier of the object to release.
             */
            objectId: RemoteObjectId;
        }

        interface ReleaseObjectGroupParameterType {
            /**
             * Symbolic object group name.
             */
            objectGroup: string;
        }

        interface RunScriptParameterType {
            /**
             * Id of the script to run.
             */
            scriptId: ScriptId;
            /**
             * Specifies in which execution context to perform script run. If the parameter is omitted the
             * evaluation will be performed in the context of the inspected page.
             */
            executionContextId?: ExecutionContextId;
            /**
             * Symbolic group name that can be used to release multiple objects.
             */
            objectGroup?: string;
            /**
             * In silent mode exceptions thrown during evaluation are not reported and do not pause
             * execution. Overrides `setPauseOnException` state.
             */
            silent?: boolean;
            /**
             * Determines whether Command Line API should be available during the evaluation.
             */
            includeCommandLineAPI?: boolean;
            /**
             * Whether the result is expected to be a JSON object which should be sent by value.
             */
            returnByValue?: boolean;
            /**
             * Whether preview should be generated for the result.
             */
            generatePreview?: boolean;
            /**
             * Whether execution should `await` for resulting value and return once awaited promise is
             * resolved.
             */
            awaitPromise?: boolean;
        }

        interface SetAsyncCallStackDepthParameterType {
            /**
             * Maximum depth of async call stacks. Setting to `0` will effectively disable collecting async
             * call stacks (default).
             */
            maxDepth: number;
        }

        interface SetCustomObjectFormatterEnabledParameterType {
            enabled: boolean;
        }

        interface SetMaxCallStackSizeToCaptureParameterType {
            size: number;
        }

        interface AddBindingParameterType {
            name: string;
            executionContextId?: ExecutionContextId;
        }

        interface RemoveBindingParameterType {
            name: string;
        }

        interface AwaitPromiseReturnType {
            /**
             * Promise result. Will contain rejected value if promise was rejected.
             */
            result: RemoteObject;
            /**
             * Exception details if stack strace is available.
             */
            exceptionDetails?: ExceptionDetails;
        }

        interface CallFunctionOnReturnType {
            /**
             * Call result.
             */
            result: RemoteObject;
            /**
             * Exception details.
             */
            exceptionDetails?: ExceptionDetails;
        }

        interface CompileScriptReturnType {
            /**
             * Id of the script.
             */
            scriptId?: ScriptId;
            /**
             * Exception details.
             */
            exceptionDetails?: ExceptionDetails;
        }

        interface EvaluateReturnType {
            /**
             * Evaluation result.
             */
            result: RemoteObject;
            /**
             * Exception details.
             */
            exceptionDetails?: ExceptionDetails;
        }

        interface GetIsolateIdReturnType {
            /**
             * The isolate id.
             */
            id: string;
        }

        interface GetHeapUsageReturnType {
            /**
             * Used heap size in bytes.
             */
            usedSize: number;
            /**
             * Allocated heap size in bytes.
             */
            totalSize: number;
        }

        interface GetPropertiesReturnType {
            /**
             * Object properties.
             */
            result: PropertyDescriptor[];
            /**
             * Internal object properties (only of the element itself).
             */
            internalProperties?: InternalPropertyDescriptor[];
            /**
             * Exception details.
             */
            exceptionDetails?: ExceptionDetails;
        }

        interface GlobalLexicalScopeNamesReturnType {
            names: string[];
        }

        interface QueryObjectsReturnType {
            /**
             * Array with objects.
             */
            objects: RemoteObject;
        }

        interface RunScriptReturnType {
            /**
             * Run result.
             */
            result: RemoteObject;
            /**
             * Exception details.
             */
            exceptionDetails?: ExceptionDetails;
        }

        interface BindingCalledEventDataType {
            name: string;
            payload: string;
            /**
             * Identifier of the context where the call was made.
             */
            executionContextId: ExecutionContextId;
        }

        interface ConsoleAPICalledEventDataType {
            /**
             * Type of the call.
             */
            type: string;
            /**
             * Call arguments.
             */
            args: RemoteObject[];
            /**
             * Identifier of the context where the call was made.
             */
            executionContextId: ExecutionContextId;
            /**
             * Call timestamp.
             */
            timestamp: Timestamp;
            /**
             * Stack trace captured when the call was made.
             */
            stackTrace?: StackTrace;
            /**
             * Console context descriptor for calls on non-default console context (not console.*):
             * 'anonymous#unique-logger-id' for call on unnamed context, 'name#unique-logger-id' for call
             * on named context.
             * @experimental
             */
            context?: string;
        }

        interface ExceptionRevokedEventDataType {
            /**
             * Reason describing why exception was revoked.
             */
            reason: string;
            /**
             * The id of revoked exception, as reported in `exceptionThrown`.
             */
            exceptionId: number;
        }

        interface ExceptionThrownEventDataType {
            /**
             * Timestamp of the exception.
             */
            timestamp: Timestamp;
            exceptionDetails: ExceptionDetails;
        }

        interface ExecutionContextCreatedEventDataType {
            /**
             * A newly created execution context.
             */
            context: ExecutionContextDescription;
        }

        interface ExecutionContextDestroyedEventDataType {
            /**
             * Id of the destroyed context
             */
            executionContextId: ExecutionContextId;
        }

        interface InspectRequestedEventDataType {
            object: RemoteObject;
            hints: {};
        }
    }

    namespace Schema {
        /**
         * Description of the protocol domain.
         */
        interface Domain {
            /**
             * Domain name.
             */
            name: string;
            /**
             * Domain version.
             */
            version: string;
        }

        interface GetDomainsReturnType {
            /**
             * List of supported domains.
             */
            domains: Domain[];
        }
    }

    namespace NodeTracing {
        interface TraceConfig {
            /**
             * Controls how the trace buffer stores data.
             */
            recordMode?: string;
            /**
             * Included category filters.
             */
            includedCategories: string[];
        }

        interface StartParameterType {
            traceConfig: TraceConfig;
        }

        interface GetCategoriesReturnType {
            /**
             * A list of supported tracing categories.
             */
            categories: string[];
        }

        interface DataCollectedEventDataType {
            value: Array<{}>;
        }
    }

    namespace NodeWorker {
        type WorkerID = string;

        /**
         * Unique identifier of attached debugging session.
         */
        type SessionID = string;

        interface WorkerInfo {
            workerId: WorkerID;
            type: string;
            title: string;
            url: string;
        }

        interface SendMessageToWorkerParameterType {
            message: string;
            /**
             * Identifier of the session.
             */
            sessionId: SessionID;
        }

        interface EnableParameterType {
            /**
             * Whether to new workers should be paused until the frontend sends `Runtime.runIfWaitingForDebugger`
             * message to run them.
             */
            waitForDebuggerOnStart: boolean;
        }

        interface AttachedToWorkerEventDataType {
            /**
             * Identifier assigned to the session used to send/receive messages.
             */
            sessionId: SessionID;
            workerInfo: WorkerInfo;
            waitingForDebugger: boolean;
        }

        interface DetachedFromWorkerEventDataType {
            /**
             * Detached session identifier.
             */
            sessionId: SessionID;
        }

        interface ReceivedMessageFromWorkerEventDataType {
            /**
             * Identifier of a session which sends a message.
             */
            sessionId: SessionID;
            message: string;
        }
    }

    /**
     * The inspector.Session is used for dispatching messages to the V8 inspector back-end and receiving message responses and notifications.
     */
    class Session extends EventEmitter {
        /**
         * Create a new instance of the inspector.Session class.
         * The inspector session needs to be connected through session.connect() before the messages can be dispatched to the inspector backend.
         */
        constructor();

        /**
         * Connects a session to the inspector back-end.
         * An exception will be thrown if there is already a connected session established either
         * through the API or by a front-end connected to the Inspector WebSocket port.
         */
        connect(): void;

        /**
         * Immediately close the session. All pending message callbacks will be called with an error.
         * session.connect() will need to be called to be able to send messages again.
         * Reconnected session will lose all inspector state, such as enabled agents or configured breakpoints.
         */
        disconnect(): void;

        /**
         * Posts a message to the inspector back-end. callback will be notified when a response is received.
         * callback is a function that accepts two optional arguments - error and message-specific result.
         */
        post(method: string, params?: {}, callback?: (err: Error | null, params?: {}) => void): void;
        post(method: string, callback?: (err: Error | null, params?: {}) => void): void;

        /**
         * Does nothing.
         */
        post(method: "Console.clearMessages", callback?: (err: Error | null) => void): void;

        /**
         * Disables console domain, prevents further console messages from being reported to the client.
         */
        post(method: "Console.disable", callback?: (err: Error | null) => void): void;

        /**
         * Enables console domain, sends the messages collected so far to the client by means of the
         * `messageAdded` notification.
         */
        post(method: "Console.enable", callback?: (err: Error | null) => void): void;

        /**
         * Continues execution until specific location is reached.
         */
        post(method: "Debugger.continueToLocation", params?: Debugger.ContinueToLocationParameterType, callback?: (err: Error | null) => void): void;
        post(method: "Debugger.continueToLocation", callback?: (err: Error | null) => void): void;

        /**
         * Disables debugger for given page.
         */
        post(method: "Debugger.disable", callback?: (err: Error | null) => void): void;

        /**
         * Enables debugger for the given page. Clients should not assume that the debugging has been
         * enabled until the result for this command is received.
         */
        post(method: "Debugger.enable", callback?: (err: Error | null, params: Debugger.EnableReturnType) => void): void;

        /**
         * Evaluates expression on a given call frame.
         */
        post(method: "Debugger.evaluateOnCallFrame", params?: Debugger.EvaluateOnCallFrameParameterType, callback?: (err: Error | null, params: Debugger.EvaluateOnCallFrameReturnType) => void): void;
        post(method: "Debugger.evaluateOnCallFrame", callback?: (err: Error | null, params: Debugger.EvaluateOnCallFrameReturnType) => void): void;

        /**
         * Returns possible locations for breakpoint. scriptId in start and end range locations should be
         * the same.
         */
        post(
            method: "Debugger.getPossibleBreakpoints",
            params?: Debugger.GetPossibleBreakpointsParameterType,
            callback?: (err: Error | null, params: Debugger.GetPossibleBreakpointsReturnType) => void
        ): void;
        post(method: "Debugger.getPossibleBreakpoints", callback?: (err: Error | null, params: Debugger.GetPossibleBreakpointsReturnType) => void): void;

        /**
         * Returns source for the script with given id.
         */
        post(method: "Debugger.getScriptSource", params?: Debugger.GetScriptSourceParameterType, callback?: (err: Error | null, params: Debugger.GetScriptSourceReturnType) => void): void;
        post(method: "Debugger.getScriptSource", callback?: (err: Error | null, params: Debugger.GetScriptSourceReturnType) => void): void;

        /**
         * Returns stack trace with given `stackTraceId`.
         * @experimental
         */
        post(method: "Debugger.getStackTrace", params?: Debugger.GetStackTraceParameterType, callback?: (err: Error | null, params: Debugger.GetStackTraceReturnType) => void): void;
        post(method: "Debugger.getStackTrace", callback?: (err: Error | null, params: Debugger.GetStackTraceReturnType) => void): void;

        /**
         * Stops on the next JavaScript statement.
         */
        post(method: "Debugger.pause", callback?: (err: Error | null) => void): void;

        /**
         * @experimental
         */
        post(method: "Debugger.pauseOnAsyncCall", params?: Debugger.PauseOnAsyncCallParameterType, callback?: (err: Error | null) => void): void;
        post(method: "Debugger.pauseOnAsyncCall", callback?: (err: Error | null) => void): void;

        /**
         * Removes JavaScript breakpoint.
         */
        post(method: "Debugger.removeBreakpoint", params?: Debugger.RemoveBreakpointParameterType, callback?: (err: Error | null) => void): void;
        post(method: "Debugger.removeBreakpoint", callback?: (err: Error | null) => void): void;

        /**
         * Restarts particular call frame from the beginning.
         */
        post(method: "Debugger.restartFrame", params?: Debugger.RestartFrameParameterType, callback?: (err: Error | null, params: Debugger.RestartFrameReturnType) => void): void;
        post(method: "Debugger.restartFrame", callback?: (err: Error | null, params: Debugger.RestartFrameReturnType) => void): void;

        /**
         * Resumes JavaScript execution.
         */
        post(method: "Debugger.resume", callback?: (err: Error | null) => void): void;

        /**
         * This method is deprecated - use Debugger.stepInto with breakOnAsyncCall and
         * Debugger.pauseOnAsyncTask instead. Steps into next scheduled async task if any is scheduled
         * before next pause. Returns success when async task is actually scheduled, returns error if no
         * task were scheduled or another scheduleStepIntoAsync was called.
         * @experimental
         */
        post(method: "Debugger.scheduleStepIntoAsync", callback?: (err: Error | null) => void): void;

        /**
         * Searches for given string in script content.
         */
        post(method: "Debugger.searchInContent", params?: Debugger.SearchInContentParameterType, callback?: (err: Error | null, params: Debugger.SearchInContentReturnType) => void): void;
        post(method: "Debugger.searchInContent", callback?: (err: Error | null, params: Debugger.SearchInContentReturnType) => void): void;

        /**
         * Enables or disables async call stacks tracking.
         */
        post(method: "Debugger.setAsyncCallStackDepth", params?: Debugger.SetAsyncCallStackDepthParameterType, callback?: (err: Error | null) => void): void;
        post(method: "Debugger.setAsyncCallStackDepth", callback?: (err: Error | null) => void): void;

        /**
         * Replace previous blackbox patterns with passed ones. Forces backend to skip stepping/pausing in
         * scripts with url matching one of the patterns. VM will try to leave blackboxed script by
         * performing 'step in' several times, finally resorting to 'step out' if unsuccessful.
         * @experimental
         */
        post(method: "Debugger.setBlackboxPatterns", params?: Debugger.SetBlackboxPatternsParameterType, callback?: (err: Error | null) => void): void;
        post(method: "Debugger.setBlackboxPatterns", callback?: (err: Error | null) => void): void;

        /**
         * Makes backend skip steps in the script in blackboxed ranges. VM will try leave blacklisted
         * scripts by performing 'step in' several times, finally resorting to 'step out' if unsuccessful.
         * Positions array contains positions where blackbox state is changed. First interval isn't
         * blackboxed. Array should be sorted.
         * @experimental
         */
        post(method: "Debugger.setBlackboxedRanges", params?: Debugger.SetBlackboxedRangesParameterType, callback?: (err: Error | null) => void): void;
        post(method: "Debugger.setBlackboxedRanges", callback?: (err: Error | null) => void): void;

        /**
         * Sets JavaScript breakpoint at a given location.
         */
        post(method: "Debugger.setBreakpoint", params?: Debugger.SetBreakpointParameterType, callback?: (err: Error | null, params: Debugger.SetBreakpointReturnType) => void): void;
        post(method: "Debugger.setBreakpoint", callback?: (err: Error | null, params: Debugger.SetBreakpointReturnType) => void): void;

        /**
         * Sets JavaScript breakpoint at given location specified either by URL or URL regex. Once this
         * command is issued, all existing parsed scripts will have breakpoints resolved and returned in
         * `locations` property. Further matching script parsing will result in subsequent
         * `breakpointResolved` events issued. This logical breakpoint will survive page reloads.
         */
        post(method: "Debugger.setBreakpointByUrl", params?: Debugger.SetBreakpointByUrlParameterType, callback?: (err: Error | null, params: Debugger.SetBreakpointByUrlReturnType) => void): void;
        post(method: "Debugger.setBreakpointByUrl", callback?: (err: Error | null, params: Debugger.SetBreakpointByUrlReturnType) => void): void;

        /**
         * Sets JavaScript breakpoint before each call to the given function.
         * If another function was created from the same source as a given one,
         * calling it will also trigger the breakpoint.
         * @experimental
         */
        post(
            method: "Debugger.setBreakpointOnFunctionCall",
            params?: Debugger.SetBreakpointOnFunctionCallParameterType,
            callback?: (err: Error | null, params: Debugger.SetBreakpointOnFunctionCallReturnType) => void
        ): void;
        post(method: "Debugger.setBreakpointOnFunctionCall", callback?: (err: Error | null, params: Debugger.SetBreakpointOnFunctionCallReturnType) => void): void;

        /**
         * Activates / deactivates all breakpoints on the page.
         */
        post(method: "Debugger.setBreakpointsActive", params?: Debugger.SetBreakpointsActiveParameterType, callback?: (err: Error | null) => void): void;
        post(method: "Debugger.setBreakpointsActive", callback?: (err: Error | null) => void): void;

        /**
         * Defines pause on exceptions state. Can be set to stop on all exceptions, uncaught exceptions or
         * no exceptions. Initial pause on exceptions state is `none`.
         */
        post(method: "Debugger.setPauseOnExceptions", params?: Debugger.SetPauseOnExceptionsParameterType, callback?: (err: Error | null) => void): void;
        post(method: "Debugger.setPauseOnExceptions", callback?: (err: Error | null) => void): void;

        /**
         * Changes return value in top frame. Available only at return break position.
         * @experimental
         */
        post(method: "Debugger.setReturnValue", params?: Debugger.SetReturnValueParameterType, callback?: (err: Error | null) => void): void;
        post(method: "Debugger.setReturnValue", callback?: (err: Error | null) => void): void;

        /**
         * Edits JavaScript source live.
         */
        post(method: "Debugger.setScriptSource", params?: Debugger.SetScriptSourceParameterType, callback?: (err: Error | null, params: Debugger.SetScriptSourceReturnType) => void): void;
        post(method: "Debugger.setScriptSource", callback?: (err: Error | null, params: Debugger.SetScriptSourceReturnType) => void): void;

        /**
         * Makes page not interrupt on any pauses (breakpoint, exception, dom exception etc).
         */
        post(method: "Debugger.setSkipAllPauses", params?: Debugger.SetSkipAllPausesParameterType, callback?: (err: Error | null) => void): void;
        post(method: "Debugger.setSkipAllPauses", callback?: (err: Error | null) => void): void;

        /**
         * Changes value of variable in a callframe. Object-based scopes are not supported and must be
         * mutated manually.
         */
        post(method: "Debugger.setVariableValue", params?: Debugger.SetVariableValueParameterType, callback?: (err: Error | null) => void): void;
        post(method: "Debugger.setVariableValue", callback?: (err: Error | null) => void): void;

        /**
         * Steps into the function call.
         */
        post(method: "Debugger.stepInto", params?: Debugger.StepIntoParameterType, callback?: (err: Error | null) => void): void;
        post(method: "Debugger.stepInto", callback?: (err: Error | null) => void): void;

        /**
         * Steps out of the function call.
         */
        post(method: "Debugger.stepOut", callback?: (err: Error | null) => void): void;

        /**
         * Steps over the statement.
         */
        post(method: "Debugger.stepOver", callback?: (err: Error | null) => void): void;

        /**
         * Enables console to refer to the node with given id via $x (see Command Line API for more details
         * $x functions).
         */
        post(method: "HeapProfiler.addInspectedHeapObject", params?: HeapProfiler.AddInspectedHeapObjectParameterType, callback?: (err: Error | null) => void): void;
        post(method: "HeapProfiler.addInspectedHeapObject", callback?: (err: Error | null) => void): void;

        post(method: "HeapProfiler.collectGarbage", callback?: (err: Error | null) => void): void;

        post(method: "HeapProfiler.disable", callback?: (err: Error | null) => void): void;

        post(method: "HeapProfiler.enable", callback?: (err: Error | null) => void): void;

        post(method: "HeapProfiler.getHeapObjectId", params?: HeapProfiler.GetHeapObjectIdParameterType, callback?: (err: Error | null, params: HeapProfiler.GetHeapObjectIdReturnType) => void): void;
        post(method: "HeapProfiler.getHeapObjectId", callback?: (err: Error | null, params: HeapProfiler.GetHeapObjectIdReturnType) => void): void;

        post(
            method: "HeapProfiler.getObjectByHeapObjectId",
            params?: HeapProfiler.GetObjectByHeapObjectIdParameterType,
            callback?: (err: Error | null, params: HeapProfiler.GetObjectByHeapObjectIdReturnType) => void
        ): void;
        post(method: "HeapProfiler.getObjectByHeapObjectId", callback?: (err: Error | null, params: HeapProfiler.GetObjectByHeapObjectIdReturnType) => void): void;

        post(method: "HeapProfiler.getSamplingProfile", callback?: (err: Error | null, params: HeapProfiler.GetSamplingProfileReturnType) => void): void;

        post(method: "HeapProfiler.startSampling", params?: HeapProfiler.StartSamplingParameterType, callback?: (err: Error | null) => void): void;
        post(method: "HeapProfiler.startSampling", callback?: (err: Error | null) => void): void;

        post(method: "HeapProfiler.startTrackingHeapObjects", params?: HeapProfiler.StartTrackingHeapObjectsParameterType, callback?: (err: Error | null) => void): void;
        post(method: "HeapProfiler.startTrackingHeapObjects", callback?: (err: Error | null) => void): void;

        post(method: "HeapProfiler.stopSampling", callback?: (err: Error | null, params: HeapProfiler.StopSamplingReturnType) => void): void;

        post(method: "HeapProfiler.stopTrackingHeapObjects", params?: HeapProfiler.StopTrackingHeapObjectsParameterType, callback?: (err: Error | null) => void): void;
        post(method: "HeapProfiler.stopTrackingHeapObjects", callback?: (err: Error | null) => void): void;

        post(method: "HeapProfiler.takeHeapSnapshot", params?: HeapProfiler.TakeHeapSnapshotParameterType, callback?: (err: Error | null) => void): void;
        post(method: "HeapProfiler.takeHeapSnapshot", callback?: (err: Error | null) => void): void;

        post(method: "Profiler.disable", callback?: (err: Error | null) => void): void;

        post(method: "Profiler.enable", callback?: (err: Error | null) => void): void;

        /**
         * Collect coverage data for the current isolate. The coverage data may be incomplete due to
         * garbage collection.
         */
        post(method: "Profiler.getBestEffortCoverage", callback?: (err: Error | null, params: Profiler.GetBestEffortCoverageReturnType) => void): void;

        /**
         * Changes CPU profiler sampling interval. Must be called before CPU profiles recording started.
         */
        post(method: "Profiler.setSamplingInterval", params?: Profiler.SetSamplingIntervalParameterType, callback?: (err: Error | null) => void): void;
        post(method: "Profiler.setSamplingInterval", callback?: (err: Error | null) => void): void;

        post(method: "Profiler.start", callback?: (err: Error | null) => void): void;

        /**
         * Enable precise code coverage. Coverage data for JavaScript executed before enabling precise code
         * coverage may be incomplete. Enabling prevents running optimized code and resets execution
         * counters.
         */
        post(method: "Profiler.startPreciseCoverage", params?: Profiler.StartPreciseCoverageParameterType, callback?: (err: Error | null) => void): void;
        post(method: "Profiler.startPreciseCoverage", callback?: (err: Error | null) => void): void;

        /**
         * Enable type profile.
         * @experimental
         */
        post(method: "Profiler.startTypeProfile", callback?: (err: Error | null) => void): void;

        post(method: "Profiler.stop", callback?: (err: Error | null, params: Profiler.StopReturnType) => void): void;

        /**
         * Disable precise code coverage. Disabling releases unnecessary execution count records and allows
         * executing optimized code.
         */
        post(method: "Profiler.stopPreciseCoverage", callback?: (err: Error | null) => void): void;

        /**
         * Disable type profile. Disabling releases type profile data collected so far.
         * @experimental
         */
        post(method: "Profiler.stopTypeProfile", callback?: (err: Error | null) => void): void;

        /**
         * Collect coverage data for the current isolate, and resets execution counters. Precise code
         * coverage needs to have started.
         */
        post(method: "Profiler.takePreciseCoverage", callback?: (err: Error | null, params: Profiler.TakePreciseCoverageReturnType) => void): void;

        /**
         * Collect type profile.
         * @experimental
         */
        post(method: "Profiler.takeTypeProfile", callback?: (err: Error | null, params: Profiler.TakeTypeProfileReturnType) => void): void;

        /**
         * Add handler to promise with given promise object id.
         */
        post(method: "Runtime.awaitPromise", params?: Runtime.AwaitPromiseParameterType, callback?: (err: Error | null, params: Runtime.AwaitPromiseReturnType) => void): void;
        post(method: "Runtime.awaitPromise", callback?: (err: Error | null, params: Runtime.AwaitPromiseReturnType) => void): void;

        /**
         * Calls function with given declaration on the given object. Object group of the result is
         * inherited from the target object.
         */
        post(method: "Runtime.callFunctionOn", params?: Runtime.CallFunctionOnParameterType, callback?: (err: Error | null, params: Runtime.CallFunctionOnReturnType) => void): void;
        post(method: "Runtime.callFunctionOn", callback?: (err: Error | null, params: Runtime.CallFunctionOnReturnType) => void): void;

        /**
         * Compiles expression.
         */
        post(method: "Runtime.compileScript", params?: Runtime.CompileScriptParameterType, callback?: (err: Error | null, params: Runtime.CompileScriptReturnType) => void): void;
        post(method: "Runtime.compileScript", callback?: (err: Error | null, params: Runtime.CompileScriptReturnType) => void): void;

        /**
         * Disables reporting of execution contexts creation.
         */
        post(method: "Runtime.disable", callback?: (err: Error | null) => void): void;

        /**
         * Discards collected exceptions and console API calls.
         */
        post(method: "Runtime.discardConsoleEntries", callback?: (err: Error | null) => void): void;

        /**
         * Enables reporting of execution contexts creation by means of `executionContextCreated` event.
         * When the reporting gets enabled the event will be sent immediately for each existing execution
         * context.
         */
        post(method: "Runtime.enable", callback?: (err: Error | null) => void): void;

        /**
         * Evaluates expression on global object.
         */
        post(method: "Runtime.evaluate", params?: Runtime.EvaluateParameterType, callback?: (err: Error | null, params: Runtime.EvaluateReturnType) => void): void;
        post(method: "Runtime.evaluate", callback?: (err: Error | null, params: Runtime.EvaluateReturnType) => void): void;

        /**
         * Returns the isolate id.
         * @experimental
         */
        post(method: "Runtime.getIsolateId", callback?: (err: Error | null, params: Runtime.GetIsolateIdReturnType) => void): void;

        /**
         * Returns the JavaScript heap usage.
         * It is the total usage of the corresponding isolate not scoped to a particular Runtime.
         * @experimental
         */
        post(method: "Runtime.getHeapUsage", callback?: (err: Error | null, params: Runtime.GetHeapUsageReturnType) => void): void;

        /**
         * Returns properties of a given object. Object group of the result is inherited from the target
         * object.
         */
        post(method: "Runtime.getProperties", params?: Runtime.GetPropertiesParameterType, callback?: (err: Error | null, params: Runtime.GetPropertiesReturnType) => void): void;
        post(method: "Runtime.getProperties", callback?: (err: Error | null, params: Runtime.GetPropertiesReturnType) => void): void;

        /**
         * Returns all let, const and class variables from global scope.
         */
        post(
            method: "Runtime.globalLexicalScopeNames",
            params?: Runtime.GlobalLexicalScopeNamesParameterType,
            callback?: (err: Error | null, params: Runtime.GlobalLexicalScopeNamesReturnType) => void
        ): void;
        post(method: "Runtime.globalLexicalScopeNames", callback?: (err: Error | null, params: Runtime.GlobalLexicalScopeNamesReturnType) => void): void;

        post(method: "Runtime.queryObjects", params?: Runtime.QueryObjectsParameterType, callback?: (err: Error | null, params: Runtime.QueryObjectsReturnType) => void): void;
        post(method: "Runtime.queryObjects", callback?: (err: Error | null, params: Runtime.QueryObjectsReturnType) => void): void;

        /**
         * Releases remote object with given id.
         */
        post(method: "Runtime.releaseObject", params?: Runtime.ReleaseObjectParameterType, callback?: (err: Error | null) => void): void;
        post(method: "Runtime.releaseObject", callback?: (err: Error | null) => void): void;

        /**
         * Releases all remote objects that belong to a given group.
         */
        post(method: "Runtime.releaseObjectGroup", params?: Runtime.ReleaseObjectGroupParameterType, callback?: (err: Error | null) => void): void;
        post(method: "Runtime.releaseObjectGroup", callback?: (err: Error | null) => void): void;

        /**
         * Tells inspected instance to run if it was waiting for debugger to attach.
         */
        post(method: "Runtime.runIfWaitingForDebugger", callback?: (err: Error | null) => void): void;

        /**
         * Runs script with given id in a given context.
         */
        post(method: "Runtime.runScript", params?: Runtime.RunScriptParameterType, callback?: (err: Error | null, params: Runtime.RunScriptReturnType) => void): void;
        post(method: "Runtime.runScript", callback?: (err: Error | null, params: Runtime.RunScriptReturnType) => void): void;

        /**
         * Enables or disables async call stacks tracking.
         */
        post(method: "Runtime.setAsyncCallStackDepth", params?: Runtime.SetAsyncCallStackDepthParameterType, callback?: (err: Error | null) => void): void;
        post(method: "Runtime.setAsyncCallStackDepth", callback?: (err: Error | null) => void): void;

        /**
         * @experimental
         */
        post(method: "Runtime.setCustomObjectFormatterEnabled", params?: Runtime.SetCustomObjectFormatterEnabledParameterType, callback?: (err: Error | null) => void): void;
        post(method: "Runtime.setCustomObjectFormatterEnabled", callback?: (err: Error | null) => void): void;

        /**
         * @experimental
         */
        post(method: "Runtime.setMaxCallStackSizeToCapture", params?: Runtime.SetMaxCallStackSizeToCaptureParameterType, callback?: (err: Error | null) => void): void;
        post(method: "Runtime.setMaxCallStackSizeToCapture", callback?: (err: Error | null) => void): void;

        /**
         * Terminate current or next JavaScript execution.
         * Will cancel the termination when the outer-most script execution ends.
         * @experimental
         */
        post(method: "Runtime.terminateExecution", callback?: (err: Error | null) => void): void;

        /**
         * If executionContextId is empty, adds binding with the given name on the
         * global objects of all inspected contexts, including those created later,
         * bindings survive reloads.
         * If executionContextId is specified, adds binding only on global object of
         * given execution context.
         * Binding function takes exactly one argument, this argument should be string,
         * in case of any other input, function throws an exception.
         * Each binding function call produces Runtime.bindingCalled notification.
         * @experimental
         */
        post(method: "Runtime.addBinding", params?: Runtime.AddBindingParameterType, callback?: (err: Error | null) => void): void;
        post(method: "Runtime.addBinding", callback?: (err: Error | null) => void): void;

        /**
         * This method does not remove binding function from global object but
         * unsubscribes current runtime agent from Runtime.bindingCalled notifications.
         * @experimental
         */
        post(method: "Runtime.removeBinding", params?: Runtime.RemoveBindingParameterType, callback?: (err: Error | null) => void): void;
        post(method: "Runtime.removeBinding", callback?: (err: Error | null) => void): void;

        /**
         * Returns supported domains.
         */
        post(method: "Schema.getDomains", callback?: (err: Error | null, params: Schema.GetDomainsReturnType) => void): void;

        /**
         * Gets supported tracing categories.
         */
        post(method: "NodeTracing.getCategories", callback?: (err: Error | null, params: NodeTracing.GetCategoriesReturnType) => void): void;

        /**
         * Start trace events collection.
         */
        post(method: "NodeTracing.start", params?: NodeTracing.StartParameterType, callback?: (err: Error | null) => void): void;
        post(method: "NodeTracing.start", callback?: (err: Error | null) => void): void;

        /**
         * Stop trace events collection. Remaining collected events will be sent as a sequence of
         * dataCollected events followed by tracingComplete event.
         */
        post(method: "NodeTracing.stop", callback?: (err: Error | null) => void): void;

        /**
         * Sends protocol message over session with given id.
         */
        post(method: "NodeWorker.sendMessageToWorker", params?: NodeWorker.SendMessageToWorkerParameterType, callback?: (err: Error | null) => void): void;
        post(method: "NodeWorker.sendMessageToWorker", callback?: (err: Error | null) => void): void;

        /**
         * Instructs the inspector to attach to running workers. Will also attach to new workers
         * as they start
         */
        post(method: "NodeWorker.enable", params?: NodeWorker.EnableParameterType, callback?: (err: Error | null) => void): void;
        post(method: "NodeWorker.enable", callback?: (err: Error | null) => void): void;

        /**
         * Detaches from all running workers and disables attaching to new workers as they are started.
         */
        post(method: "NodeWorker.disable", callback?: (err: Error | null) => void): void;

        // Events

        addListener(event: string, listener: (...args: any[]) => void): this;

        /**
         * Emitted when any notification from the V8 Inspector is received.
         */
        addListener(event: "inspectorNotification", listener: (message: InspectorNotification<{}>) => void): this;

        /**
         * Issued when new console message is added.
         */
        addListener(event: "Console.messageAdded", listener: (message: InspectorNotification<Console.MessageAddedEventDataType>) => void): this;

        /**
         * Fired when breakpoint is resolved to an actual script and location.
         */
        addListener(event: "Debugger.breakpointResolved", listener: (message: InspectorNotification<Debugger.BreakpointResolvedEventDataType>) => void): this;

        /**
         * Fired when the virtual machine stopped on breakpoint or exception or any other stop criteria.
         */
        addListener(event: "Debugger.paused", listener: (message: InspectorNotification<Debugger.PausedEventDataType>) => void): this;

        /**
         * Fired when the virtual machine resumed execution.
         */
        addListener(event: "Debugger.resumed", listener: () => void): this;

        /**
         * Fired when virtual machine fails to parse the script.
         */
        addListener(event: "Debugger.scriptFailedToParse", listener: (message: InspectorNotification<Debugger.ScriptFailedToParseEventDataType>) => void): this;

        /**
         * Fired when virtual machine parses script. This event is also fired for all known and uncollected
         * scripts upon enabling debugger.
         */
        addListener(event: "Debugger.scriptParsed", listener: (message: InspectorNotification<Debugger.ScriptParsedEventDataType>) => void): this;

        addListener(event: "HeapProfiler.addHeapSnapshotChunk", listener: (message: InspectorNotification<HeapProfiler.AddHeapSnapshotChunkEventDataType>) => void): this;

        /**
         * If heap objects tracking has been started then backend may send update for one or more fragments
         */
        addListener(event: "HeapProfiler.heapStatsUpdate", listener: (message: InspectorNotification<HeapProfiler.HeapStatsUpdateEventDataType>) => void): this;

        /**
         * If heap objects tracking has been started then backend regularly sends a current value for last
         * seen object id and corresponding timestamp. If the were changes in the heap since last event
         * then one or more heapStatsUpdate events will be sent before a new lastSeenObjectId event.
         */
        addListener(event: "HeapProfiler.lastSeenObjectId", listener: (message: InspectorNotification<HeapProfiler.LastSeenObjectIdEventDataType>) => void): this;

        addListener(event: "HeapProfiler.reportHeapSnapshotProgress", listener: (message: InspectorNotification<HeapProfiler.ReportHeapSnapshotProgressEventDataType>) => void): this;
        addListener(event: "HeapProfiler.resetProfiles", listener: () => void): this;
        addListener(event: "Profiler.consoleProfileFinished", listener: (message: InspectorNotification<Profiler.ConsoleProfileFinishedEventDataType>) => void): this;

        /**
         * Sent when new profile recording is started using console.profile() call.
         */
        addListener(event: "Profiler.consoleProfileStarted", listener: (message: InspectorNotification<Profiler.ConsoleProfileStartedEventDataType>) => void): this;

        /**
         * Notification is issued every time when binding is called.
         * @experimental
         */
        addListener(event: "Runtime.bindingCalled", listener: (message: InspectorNotification<Runtime.BindingCalledEventDataType>) => void): this;

        /**
         * Issued when console API was called.
         */
        addListener(event: "Runtime.consoleAPICalled", listener: (message: InspectorNotification<Runtime.ConsoleAPICalledEventDataType>) => void): this;

        /**
         * Issued when unhandled exception was revoked.
         */
        addListener(event: "Runtime.exceptionRevoked", listener: (message: InspectorNotification<Runtime.ExceptionRevokedEventDataType>) => void): this;

        /**
         * Issued when exception was thrown and unhandled.
         */
        addListener(event: "Runtime.exceptionThrown", listener: (message: InspectorNotification<Runtime.ExceptionThrownEventDataType>) => void): this;

        /**
         * Issued when new execution context is created.
         */
        addListener(event: "Runtime.executionContextCreated", listener: (message: InspectorNotification<Runtime.ExecutionContextCreatedEventDataType>) => void): this;

        /**
         * Issued when execution context is destroyed.
         */
        addListener(event: "Runtime.executionContextDestroyed", listener: (message: InspectorNotification<Runtime.ExecutionContextDestroyedEventDataType>) => void): this;

        /**
         * Issued when all executionContexts were cleared in browser
         */
        addListener(event: "Runtime.executionContextsCleared", listener: () => void): this;

        /**
         * Issued when object should be inspected (for example, as a result of inspect() command line API
         * call).
         */
        addListener(event: "Runtime.inspectRequested", listener: (message: InspectorNotification<Runtime.InspectRequestedEventDataType>) => void): this;

        /**
         * Contains an bucket of collected trace events.
         */
        addListener(event: "NodeTracing.dataCollected", listener: (message: InspectorNotification<NodeTracing.DataCollectedEventDataType>) => void): this;

        /**
         * Signals that tracing is stopped and there is no trace buffers pending flush, all data were
         * delivered via dataCollected events.
         */
        addListener(event: "NodeTracing.tracingComplete", listener: () => void): this;

        /**
         * Issued when attached to a worker.
         */
        addListener(event: "NodeWorker.attachedToWorker", listener: (message: InspectorNotification<NodeWorker.AttachedToWorkerEventDataType>) => void): this;

        /**
         * Issued when detached from the worker.
         */
        addListener(event: "NodeWorker.detachedFromWorker", listener: (message: InspectorNotification<NodeWorker.DetachedFromWorkerEventDataType>) => void): this;

        /**
         * Notifies about a new protocol message received from the session
         * (session ID is provided in attachedToWorker notification).
         */
        addListener(event: "NodeWorker.receivedMessageFromWorker", listener: (message: InspectorNotification<NodeWorker.ReceivedMessageFromWorkerEventDataType>) => void): this;

        emit(event: string | symbol, ...args: any[]): boolean;
        emit(event: "inspectorNotification", message: InspectorNotification<{}>): boolean;
        emit(event: "Console.messageAdded", message: InspectorNotification<Console.MessageAddedEventDataType>): boolean;
        emit(event: "Debugger.breakpointResolved", message: InspectorNotification<Debugger.BreakpointResolvedEventDataType>): boolean;
        emit(event: "Debugger.paused", message: InspectorNotification<Debugger.PausedEventDataType>): boolean;
        emit(event: "Debugger.resumed"): boolean;
        emit(event: "Debugger.scriptFailedToParse", message: InspectorNotification<Debugger.ScriptFailedToParseEventDataType>): boolean;
        emit(event: "Debugger.scriptParsed", message: InspectorNotification<Debugger.ScriptParsedEventDataType>): boolean;
        emit(event: "HeapProfiler.addHeapSnapshotChunk", message: InspectorNotification<HeapProfiler.AddHeapSnapshotChunkEventDataType>): boolean;
        emit(event: "HeapProfiler.heapStatsUpdate", message: InspectorNotification<HeapProfiler.HeapStatsUpdateEventDataType>): boolean;
        emit(event: "HeapProfiler.lastSeenObjectId", message: InspectorNotification<HeapProfiler.LastSeenObjectIdEventDataType>): boolean;
        emit(event: "HeapProfiler.reportHeapSnapshotProgress", message: InspectorNotification<HeapProfiler.ReportHeapSnapshotProgressEventDataType>): boolean;
        emit(event: "HeapProfiler.resetProfiles"): boolean;
        emit(event: "Profiler.consoleProfileFinished", message: InspectorNotification<Profiler.ConsoleProfileFinishedEventDataType>): boolean;
        emit(event: "Profiler.consoleProfileStarted", message: InspectorNotification<Profiler.ConsoleProfileStartedEventDataType>): boolean;
        emit(event: "Runtime.bindingCalled", message: InspectorNotification<Runtime.BindingCalledEventDataType>): boolean;
        emit(event: "Runtime.consoleAPICalled", message: InspectorNotification<Runtime.ConsoleAPICalledEventDataType>): boolean;
        emit(event: "Runtime.exceptionRevoked", message: InspectorNotification<Runtime.ExceptionRevokedEventDataType>): boolean;
        emit(event: "Runtime.exceptionThrown", message: InspectorNotification<Runtime.ExceptionThrownEventDataType>): boolean;
        emit(event: "Runtime.executionContextCreated", message: InspectorNotification<Runtime.ExecutionContextCreatedEventDataType>): boolean;
        emit(event: "Runtime.executionContextDestroyed", message: InspectorNotification<Runtime.ExecutionContextDestroyedEventDataType>): boolean;
        emit(event: "Runtime.executionContextsCleared"): boolean;
        emit(event: "Runtime.inspectRequested", message: InspectorNotification<Runtime.InspectRequestedEventDataType>): boolean;
        emit(event: "NodeTracing.dataCollected", message: InspectorNotification<NodeTracing.DataCollectedEventDataType>): boolean;
        emit(event: "NodeTracing.tracingComplete"): boolean;
        emit(event: "NodeWorker.attachedToWorker", message: InspectorNotification<NodeWorker.AttachedToWorkerEventDataType>): boolean;
        emit(event: "NodeWorker.detachedFromWorker", message: InspectorNotification<NodeWorker.DetachedFromWorkerEventDataType>): boolean;
        emit(event: "NodeWorker.receivedMessageFromWorker", message: InspectorNotification<NodeWorker.ReceivedMessageFromWorkerEventDataType>): boolean;

        on(event: string, listener: (...args: any[]) => void): this;

        /**
         * Emitted when any notification from the V8 Inspector is received.
         */
        on(event: "inspectorNotification", listener: (message: InspectorNotification<{}>) => void): this;

        /**
         * Issued when new console message is added.
         */
        on(event: "Console.messageAdded", listener: (message: InspectorNotification<Console.MessageAddedEventDataType>) => void): this;

        /**
         * Fired when breakpoint is resolved to an actual script and location.
         */
        on(event: "Debugger.breakpointResolved", listener: (message: InspectorNotification<Debugger.BreakpointResolvedEventDataType>) => void): this;

        /**
         * Fired when the virtual machine stopped on breakpoint or exception or any other stop criteria.
         */
        on(event: "Debugger.paused", listener: (message: InspectorNotification<Debugger.PausedEventDataType>) => void): this;

        /**
         * Fired when the virtual machine resumed execution.
         */
        on(event: "Debugger.resumed", listener: () => void): this;

        /**
         * Fired when virtual machine fails to parse the script.
         */
        on(event: "Debugger.scriptFailedToParse", listener: (message: InspectorNotification<Debugger.ScriptFailedToParseEventDataType>) => void): this;

        /**
         * Fired when virtual machine parses script. This event is also fired for all known and uncollected
         * scripts upon enabling debugger.
         */
        on(event: "Debugger.scriptParsed", listener: (message: InspectorNotification<Debugger.ScriptParsedEventDataType>) => void): this;

        on(event: "HeapProfiler.addHeapSnapshotChunk", listener: (message: InspectorNotification<HeapProfiler.AddHeapSnapshotChunkEventDataType>) => void): this;

        /**
         * If heap objects tracking has been started then backend may send update for one or more fragments
         */
        on(event: "HeapProfiler.heapStatsUpdate", listener: (message: InspectorNotification<HeapProfiler.HeapStatsUpdateEventDataType>) => void): this;

        /**
         * If heap objects tracking has been started then backend regularly sends a current value for last
         * seen object id and corresponding timestamp. If the were changes in the heap since last event
         * then one or more heapStatsUpdate events will be sent before a new lastSeenObjectId event.
         */
        on(event: "HeapProfiler.lastSeenObjectId", listener: (message: InspectorNotification<HeapProfiler.LastSeenObjectIdEventDataType>) => void): this;

        on(event: "HeapProfiler.reportHeapSnapshotProgress", listener: (message: InspectorNotification<HeapProfiler.ReportHeapSnapshotProgressEventDataType>) => void): this;
        on(event: "HeapProfiler.resetProfiles", listener: () => void): this;
        on(event: "Profiler.consoleProfileFinished", listener: (message: InspectorNotification<Profiler.ConsoleProfileFinishedEventDataType>) => void): this;

        /**
         * Sent when new profile recording is started using console.profile() call.
         */
        on(event: "Profiler.consoleProfileStarted", listener: (message: InspectorNotification<Profiler.ConsoleProfileStartedEventDataType>) => void): this;

        /**
         * Notification is issued every time when binding is called.
         * @experimental
         */
        on(event: "Runtime.bindingCalled", listener: (message: InspectorNotification<Runtime.BindingCalledEventDataType>) => void): this;

        /**
         * Issued when console API was called.
         */
        on(event: "Runtime.consoleAPICalled", listener: (message: InspectorNotification<Runtime.ConsoleAPICalledEventDataType>) => void): this;

        /**
         * Issued when unhandled exception was revoked.
         */
        on(event: "Runtime.exceptionRevoked", listener: (message: InspectorNotification<Runtime.ExceptionRevokedEventDataType>) => void): this;

        /**
         * Issued when exception was thrown and unhandled.
         */
        on(event: "Runtime.exceptionThrown", listener: (message: InspectorNotification<Runtime.ExceptionThrownEventDataType>) => void): this;

        /**
         * Issued when new execution context is created.
         */
        on(event: "Runtime.executionContextCreated", listener: (message: InspectorNotification<Runtime.ExecutionContextCreatedEventDataType>) => void): this;

        /**
         * Issued when execution context is destroyed.
         */
        on(event: "Runtime.executionContextDestroyed", listener: (message: InspectorNotification<Runtime.ExecutionContextDestroyedEventDataType>) => void): this;

        /**
         * Issued when all executionContexts were cleared in browser
         */
        on(event: "Runtime.executionContextsCleared", listener: () => void): this;

        /**
         * Issued when object should be inspected (for example, as a result of inspect() command line API
         * call).
         */
        on(event: "Runtime.inspectRequested", listener: (message: InspectorNotification<Runtime.InspectRequestedEventDataType>) => void): this;

        /**
         * Contains an bucket of collected trace events.
         */
        on(event: "NodeTracing.dataCollected", listener: (message: InspectorNotification<NodeTracing.DataCollectedEventDataType>) => void): this;

        /**
         * Signals that tracing is stopped and there is no trace buffers pending flush, all data were
         * delivered via dataCollected events.
         */
        on(event: "NodeTracing.tracingComplete", listener: () => void): this;

        /**
         * Issued when attached to a worker.
         */
        on(event: "NodeWorker.attachedToWorker", listener: (message: InspectorNotification<NodeWorker.AttachedToWorkerEventDataType>) => void): this;

        /**
         * Issued when detached from the worker.
         */
        on(event: "NodeWorker.detachedFromWorker", listener: (message: InspectorNotification<NodeWorker.DetachedFromWorkerEventDataType>) => void): this;

        /**
         * Notifies about a new protocol message received from the session
         * (session ID is provided in attachedToWorker notification).
         */
        on(event: "NodeWorker.receivedMessageFromWorker", listener: (message: InspectorNotification<NodeWorker.ReceivedMessageFromWorkerEventDataType>) => void): this;

        once(event: string, listener: (...args: any[]) => void): this;

        /**
         * Emitted when any notification from the V8 Inspector is received.
         */
        once(event: "inspectorNotification", listener: (message: InspectorNotification<{}>) => void): this;

        /**
         * Issued when new console message is added.
         */
        once(event: "Console.messageAdded", listener: (message: InspectorNotification<Console.MessageAddedEventDataType>) => void): this;

        /**
         * Fired when breakpoint is resolved to an actual script and location.
         */
        once(event: "Debugger.breakpointResolved", listener: (message: InspectorNotification<Debugger.BreakpointResolvedEventDataType>) => void): this;

        /**
         * Fired when the virtual machine stopped on breakpoint or exception or any other stop criteria.
         */
        once(event: "Debugger.paused", listener: (message: InspectorNotification<Debugger.PausedEventDataType>) => void): this;

        /**
         * Fired when the virtual machine resumed execution.
         */
        once(event: "Debugger.resumed", listener: () => void): this;

        /**
         * Fired when virtual machine fails to parse the script.
         */
        once(event: "Debugger.scriptFailedToParse", listener: (message: InspectorNotification<Debugger.ScriptFailedToParseEventDataType>) => void): this;

        /**
         * Fired when virtual machine parses script. This event is also fired for all known and uncollected
         * scripts upon enabling debugger.
         */
        once(event: "Debugger.scriptParsed", listener: (message: InspectorNotification<Debugger.ScriptParsedEventDataType>) => void): this;

        once(event: "HeapProfiler.addHeapSnapshotChunk", listener: (message: InspectorNotification<HeapProfiler.AddHeapSnapshotChunkEventDataType>) => void): this;

        /**
         * If heap objects tracking has been started then backend may send update for one or more fragments
         */
        once(event: "HeapProfiler.heapStatsUpdate", listener: (message: InspectorNotification<HeapProfiler.HeapStatsUpdateEventDataType>) => void): this;

        /**
         * If heap objects tracking has been started then backend regularly sends a current value for last
         * seen object id and corresponding timestamp. If the were changes in the heap since last event
         * then one or more heapStatsUpdate events will be sent before a new lastSeenObjectId event.
         */
        once(event: "HeapProfiler.lastSeenObjectId", listener: (message: InspectorNotification<HeapProfiler.LastSeenObjectIdEventDataType>) => void): this;

        once(event: "HeapProfiler.reportHeapSnapshotProgress", listener: (message: InspectorNotification<HeapProfiler.ReportHeapSnapshotProgressEventDataType>) => void): this;
        once(event: "HeapProfiler.resetProfiles", listener: () => void): this;
        once(event: "Profiler.consoleProfileFinished", listener: (message: InspectorNotification<Profiler.ConsoleProfileFinishedEventDataType>) => void): this;

        /**
         * Sent when new profile recording is started using console.profile() call.
         */
        once(event: "Profiler.consoleProfileStarted", listener: (message: InspectorNotification<Profiler.ConsoleProfileStartedEventDataType>) => void): this;

        /**
         * Notification is issued every time when binding is called.
         * @experimental
         */
        once(event: "Runtime.bindingCalled", listener: (message: InspectorNotification<Runtime.BindingCalledEventDataType>) => void): this;

        /**
         * Issued when console API was called.
         */
        once(event: "Runtime.consoleAPICalled", listener: (message: InspectorNotification<Runtime.ConsoleAPICalledEventDataType>) => void): this;

        /**
         * Issued when unhandled exception was revoked.
         */
        once(event: "Runtime.exceptionRevoked", listener: (message: InspectorNotification<Runtime.ExceptionRevokedEventDataType>) => void): this;

        /**
         * Issued when exception was thrown and unhandled.
         */
        once(event: "Runtime.exceptionThrown", listener: (message: InspectorNotification<Runtime.ExceptionThrownEventDataType>) => void): this;

        /**
         * Issued when new execution context is created.
         */
        once(event: "Runtime.executionContextCreated", listener: (message: InspectorNotification<Runtime.ExecutionContextCreatedEventDataType>) => void): this;

        /**
         * Issued when execution context is destroyed.
         */
        once(event: "Runtime.executionContextDestroyed", listener: (message: InspectorNotification<Runtime.ExecutionContextDestroyedEventDataType>) => void): this;

        /**
         * Issued when all executionContexts were cleared in browser
         */
        once(event: "Runtime.executionContextsCleared", listener: () => void): this;

        /**
         * Issued when object should be inspected (for example, as a result of inspect() command line API
         * call).
         */
        once(event: "Runtime.inspectRequested", listener: (message: InspectorNotification<Runtime.InspectRequestedEventDataType>) => void): this;

        /**
         * Contains an bucket of collected trace events.
         */
        once(event: "NodeTracing.dataCollected", listener: (message: InspectorNotification<NodeTracing.DataCollectedEventDataType>) => void): this;

        /**
         * Signals that tracing is stopped and there is no trace buffers pending flush, all data were
         * delivered via dataCollected events.
         */
        once(event: "NodeTracing.tracingComplete", listener: () => void): this;

        /**
         * Issued when attached to a worker.
         */
        once(event: "NodeWorker.attachedToWorker", listener: (message: InspectorNotification<NodeWorker.AttachedToWorkerEventDataType>) => void): this;

        /**
         * Issued when detached from the worker.
         */
        once(event: "NodeWorker.detachedFromWorker", listener: (message: InspectorNotification<NodeWorker.DetachedFromWorkerEventDataType>) => void): this;

        /**
         * Notifies about a new protocol message received from the session
         * (session ID is provided in attachedToWorker notification).
         */
        once(event: "NodeWorker.receivedMessageFromWorker", listener: (message: InspectorNotification<NodeWorker.ReceivedMessageFromWorkerEventDataType>) => void): this;

        prependListener(event: string, listener: (...args: any[]) => void): this;

        /**
         * Emitted when any notification from the V8 Inspector is received.
         */
        prependListener(event: "inspectorNotification", listener: (message: InspectorNotification<{}>) => void): this;

        /**
         * Issued when new console message is added.
         */
        prependListener(event: "Console.messageAdded", listener: (message: InspectorNotification<Console.MessageAddedEventDataType>) => void): this;

        /**
         * Fired when breakpoint is resolved to an actual script and location.
         */
        prependListener(event: "Debugger.breakpointResolved", listener: (message: InspectorNotification<Debugger.BreakpointResolvedEventDataType>) => void): this;

        /**
         * Fired when the virtual machine stopped on breakpoint or exception or any other stop criteria.
         */
        prependListener(event: "Debugger.paused", listener: (message: InspectorNotification<Debugger.PausedEventDataType>) => void): this;

        /**
         * Fired when the virtual machine resumed execution.
         */
        prependListener(event: "Debugger.resumed", listener: () => void): this;

        /**
         * Fired when virtual machine fails to parse the script.
         */
        prependListener(event: "Debugger.scriptFailedToParse", listener: (message: InspectorNotification<Debugger.ScriptFailedToParseEventDataType>) => void): this;

        /**
         * Fired when virtual machine parses script. This event is also fired for all known and uncollected
         * scripts upon enabling debugger.
         */
        prependListener(event: "Debugger.scriptParsed", listener: (message: InspectorNotification<Debugger.ScriptParsedEventDataType>) => void): this;

        prependListener(event: "HeapProfiler.addHeapSnapshotChunk", listener: (message: InspectorNotification<HeapProfiler.AddHeapSnapshotChunkEventDataType>) => void): this;

        /**
         * If heap objects tracking has been started then backend may send update for one or more fragments
         */
        prependListener(event: "HeapProfiler.heapStatsUpdate", listener: (message: InspectorNotification<HeapProfiler.HeapStatsUpdateEventDataType>) => void): this;

        /**
         * If heap objects tracking has been started then backend regularly sends a current value for last
         * seen object id and corresponding timestamp. If the were changes in the heap since last event
         * then one or more heapStatsUpdate events will be sent before a new lastSeenObjectId event.
         */
        prependListener(event: "HeapProfiler.lastSeenObjectId", listener: (message: InspectorNotification<HeapProfiler.LastSeenObjectIdEventDataType>) => void): this;

        prependListener(event: "HeapProfiler.reportHeapSnapshotProgress", listener: (message: InspectorNotification<HeapProfiler.ReportHeapSnapshotProgressEventDataType>) => void): this;
        prependListener(event: "HeapProfiler.resetProfiles", listener: () => void): this;
        prependListener(event: "Profiler.consoleProfileFinished", listener: (message: InspectorNotification<Profiler.ConsoleProfileFinishedEventDataType>) => void): this;

        /**
         * Sent when new profile recording is started using console.profile() call.
         */
        prependListener(event: "Profiler.consoleProfileStarted", listener: (message: InspectorNotification<Profiler.ConsoleProfileStartedEventDataType>) => void): this;

        /**
         * Notification is issued every time when binding is called.
         * @experimental
         */
        prependListener(event: "Runtime.bindingCalled", listener: (message: InspectorNotification<Runtime.BindingCalledEventDataType>) => void): this;

        /**
         * Issued when console API was called.
         */
        prependListener(event: "Runtime.consoleAPICalled", listener: (message: InspectorNotification<Runtime.ConsoleAPICalledEventDataType>) => void): this;

        /**
         * Issued when unhandled exception was revoked.
         */
        prependListener(event: "Runtime.exceptionRevoked", listener: (message: InspectorNotification<Runtime.ExceptionRevokedEventDataType>) => void): this;

        /**
         * Issued when exception was thrown and unhandled.
         */
        prependListener(event: "Runtime.exceptionThrown", listener: (message: InspectorNotification<Runtime.ExceptionThrownEventDataType>) => void): this;

        /**
         * Issued when new execution context is created.
         */
        prependListener(event: "Runtime.executionContextCreated", listener: (message: InspectorNotification<Runtime.ExecutionContextCreatedEventDataType>) => void): this;

        /**
         * Issued when execution context is destroyed.
         */
        prependListener(event: "Runtime.executionContextDestroyed", listener: (message: InspectorNotification<Runtime.ExecutionContextDestroyedEventDataType>) => void): this;

        /**
         * Issued when all executionContexts were cleared in browser
         */
        prependListener(event: "Runtime.executionContextsCleared", listener: () => void): this;

        /**
         * Issued when object should be inspected (for example, as a result of inspect() command line API
         * call).
         */
        prependListener(event: "Runtime.inspectRequested", listener: (message: InspectorNotification<Runtime.InspectRequestedEventDataType>) => void): this;

        /**
         * Contains an bucket of collected trace events.
         */
        prependListener(event: "NodeTracing.dataCollected", listener: (message: InspectorNotification<NodeTracing.DataCollectedEventDataType>) => void): this;

        /**
         * Signals that tracing is stopped and there is no trace buffers pending flush, all data were
         * delivered via dataCollected events.
         */
        prependListener(event: "NodeTracing.tracingComplete", listener: () => void): this;

        /**
         * Issued when attached to a worker.
         */
        prependListener(event: "NodeWorker.attachedToWorker", listener: (message: InspectorNotification<NodeWorker.AttachedToWorkerEventDataType>) => void): this;

        /**
         * Issued when detached from the worker.
         */
        prependListener(event: "NodeWorker.detachedFromWorker", listener: (message: InspectorNotification<NodeWorker.DetachedFromWorkerEventDataType>) => void): this;

        /**
         * Notifies about a new protocol message received from the session
         * (session ID is provided in attachedToWorker notification).
         */
        prependListener(event: "NodeWorker.receivedMessageFromWorker", listener: (message: InspectorNotification<NodeWorker.ReceivedMessageFromWorkerEventDataType>) => void): this;

        prependOnceListener(event: string, listener: (...args: any[]) => void): this;

        /**
         * Emitted when any notification from the V8 Inspector is received.
         */
        prependOnceListener(event: "inspectorNotification", listener: (message: InspectorNotification<{}>) => void): this;

        /**
         * Issued when new console message is added.
         */
        prependOnceListener(event: "Console.messageAdded", listener: (message: InspectorNotification<Console.MessageAddedEventDataType>) => void): this;

        /**
         * Fired when breakpoint is resolved to an actual script and location.
         */
        prependOnceListener(event: "Debugger.breakpointResolved", listener: (message: InspectorNotification<Debugger.BreakpointResolvedEventDataType>) => void): this;

        /**
         * Fired when the virtual machine stopped on breakpoint or exception or any other stop criteria.
         */
        prependOnceListener(event: "Debugger.paused", listener: (message: InspectorNotification<Debugger.PausedEventDataType>) => void): this;

        /**
         * Fired when the virtual machine resumed execution.
         */
        prependOnceListener(event: "Debugger.resumed", listener: () => void): this;

        /**
         * Fired when virtual machine fails to parse the script.
         */
        prependOnceListener(event: "Debugger.scriptFailedToParse", listener: (message: InspectorNotification<Debugger.ScriptFailedToParseEventDataType>) => void): this;

        /**
         * Fired when virtual machine parses script. This event is also fired for all known and uncollected
         * scripts upon enabling debugger.
         */
        prependOnceListener(event: "Debugger.scriptParsed", listener: (message: InspectorNotification<Debugger.ScriptParsedEventDataType>) => void): this;

        prependOnceListener(event: "HeapProfiler.addHeapSnapshotChunk", listener: (message: InspectorNotification<HeapProfiler.AddHeapSnapshotChunkEventDataType>) => void): this;

        /**
         * If heap objects tracking has been started then backend may send update for one or more fragments
         */
        prependOnceListener(event: "HeapProfiler.heapStatsUpdate", listener: (message: InspectorNotification<HeapProfiler.HeapStatsUpdateEventDataType>) => void): this;

        /**
         * If heap objects tracking has been started then backend regularly sends a current value for last
         * seen object id and corresponding timestamp. If the were changes in the heap since last event
         * then one or more heapStatsUpdate events will be sent before a new lastSeenObjectId event.
         */
        prependOnceListener(event: "HeapProfiler.lastSeenObjectId", listener: (message: InspectorNotification<HeapProfiler.LastSeenObjectIdEventDataType>) => void): this;

        prependOnceListener(event: "HeapProfiler.reportHeapSnapshotProgress", listener: (message: InspectorNotification<HeapProfiler.ReportHeapSnapshotProgressEventDataType>) => void): this;
        prependOnceListener(event: "HeapProfiler.resetProfiles", listener: () => void): this;
        prependOnceListener(event: "Profiler.consoleProfileFinished", listener: (message: InspectorNotification<Profiler.ConsoleProfileFinishedEventDataType>) => void): this;

        /**
         * Sent when new profile recording is started using console.profile() call.
         */
        prependOnceListener(event: "Profiler.consoleProfileStarted", listener: (message: InspectorNotification<Profiler.ConsoleProfileStartedEventDataType>) => void): this;

        /**
         * Notification is issued every time when binding is called.
         * @experimental
         */
        prependOnceListener(event: "Runtime.bindingCalled", listener: (message: InspectorNotification<Runtime.BindingCalledEventDataType>) => void): this;

        /**
         * Issued when console API was called.
         */
        prependOnceListener(event: "Runtime.consoleAPICalled", listener: (message: InspectorNotification<Runtime.ConsoleAPICalledEventDataType>) => void): this;

        /**
         * Issued when unhandled exception was revoked.
         */
        prependOnceListener(event: "Runtime.exceptionRevoked", listener: (message: InspectorNotification<Runtime.ExceptionRevokedEventDataType>) => void): this;

        /**
         * Issued when exception was thrown and unhandled.
         */
        prependOnceListener(event: "Runtime.exceptionThrown", listener: (message: InspectorNotification<Runtime.ExceptionThrownEventDataType>) => void): this;

        /**
         * Issued when new execution context is created.
         */
        prependOnceListener(event: "Runtime.executionContextCreated", listener: (message: InspectorNotification<Runtime.ExecutionContextCreatedEventDataType>) => void): this;

        /**
         * Issued when execution context is destroyed.
         */
        prependOnceListener(event: "Runtime.executionContextDestroyed", listener: (message: InspectorNotification<Runtime.ExecutionContextDestroyedEventDataType>) => void): this;

        /**
         * Issued when all executionContexts were cleared in browser
         */
        prependOnceListener(event: "Runtime.executionContextsCleared", listener: () => void): this;

        /**
         * Issued when object should be inspected (for example, as a result of inspect() command line API
         * call).
         */
        prependOnceListener(event: "Runtime.inspectRequested", listener: (message: InspectorNotification<Runtime.InspectRequestedEventDataType>) => void): this;

        /**
         * Contains an bucket of collected trace events.
         */
        prependOnceListener(event: "NodeTracing.dataCollected", listener: (message: InspectorNotification<NodeTracing.DataCollectedEventDataType>) => void): this;

        /**
         * Signals that tracing is stopped and there is no trace buffers pending flush, all data were
         * delivered via dataCollected events.
         */
        prependOnceListener(event: "NodeTracing.tracingComplete", listener: () => void): this;

        /**
         * Issued when attached to a worker.
         */
        prependOnceListener(event: "NodeWorker.attachedToWorker", listener: (message: InspectorNotification<NodeWorker.AttachedToWorkerEventDataType>) => void): this;

        /**
         * Issued when detached from the worker.
         */
        prependOnceListener(event: "NodeWorker.detachedFromWorker", listener: (message: InspectorNotification<NodeWorker.DetachedFromWorkerEventDataType>) => void): this;

        /**
         * Notifies about a new protocol message received from the session
         * (session ID is provided in attachedToWorker notification).
         */
        prependOnceListener(event: "NodeWorker.receivedMessageFromWorker", listener: (message: InspectorNotification<NodeWorker.ReceivedMessageFromWorkerEventDataType>) => void): this;
    }

    // Top Level API

    /**
     * Activate inspector on host and port. Equivalent to node --inspect=[[host:]port], but can be done programatically after node has started.
     * If wait is true, will block until a client has connected to the inspect port and flow control has been passed to the debugger client.
     * @param port Port to listen on for inspector connections. Optional, defaults to what was specified on the CLI.
     * @param host Host to listen on for inspector connections. Optional, defaults to what was specified on the CLI.
     * @param wait Block until a client has connected. Optional, defaults to false.
     */
    function open(port?: number, host?: string, wait?: boolean): void;

    /**
     * Deactivate the inspector. Blocks until there are no active connections.
     */
    function close(): void;

    /**
     * Return the URL of the active inspector, or undefined if there is none.
     */
    function url(): string;
}