protocol.json

                "description": "Returns the computed style for a DOM node identified by <code>nodeId</code>."
            },
            {
                "name": "getPlatformFontsForNode",
                "parameters": [
                    { "name": "nodeId", "$ref": "DOM.NodeId" }
                ],
                "returns": [
                    { "name": "cssFamilyName", "type": "string", "description": "Font family name which is determined by computed style." },
                    { "name": "fonts", "type": "array", "items": { "$ref": "PlatformFontUsage" }, "description": "Usage statistics for every employed platform font." }
                ],
                "description": "Requests information about platform fonts which we used to render child TextNodes in the given node.",
                "hidden": true
            },
            {
                "name": "getStyleSheetText",
                "parameters": [
                    { "name": "styleSheetId", "$ref": "StyleSheetId" }
                ],
                "returns": [
                    { "name": "text", "type": "string", "description": "The stylesheet text." }
                ],
                "description": "Returns the current textual content and the URL for a stylesheet."
            },
            {
                "name": "setStyleSheetText",
                "parameters": [
                    { "name": "styleSheetId", "$ref": "StyleSheetId" },
                    { "name": "text", "type": "string" }
                ],
                "description": "Sets the new stylesheet text."
            },
            {
                "name": "setPropertyText",
                "parameters": [
                    { "name": "styleSheetId", "$ref": "StyleSheetId" },
                    { "name": "range", "$ref": "SourceRange", "description": "Either a source range of the property to be edited or an empty range representing a position for the property insertion." },
                    { "name": "text", "type": "string" }
                ],
                "returns": [
                    { "name": "style", "$ref": "CSSStyle", "description": "The resulting style after the property text modification." }
                ],
                "description": "Either replaces a property identified by <code>styleSheetId</code> and <code>range</code> with <code>text</code> or inserts a new property <code>text</code> at the position identified by an empty <code>range</code>."
            },
            {
                "name": "setRuleSelector",
                "parameters": [
                    { "name": "styleSheetId", "$ref": "StyleSheetId" },
                    { "name": "range", "$ref": "SourceRange" },
                    { "name": "selector", "type": "string" }
                ],
                "returns": [
                    { "name": "rule", "$ref": "CSSRule", "description": "The resulting rule after the selector modification." }
                ],
                "description": "Modifies the rule selector."
            },
            {
                "name": "setMediaText",
                "parameters": [
                    { "name": "styleSheetId", "$ref": "StyleSheetId" },
                    { "name": "range", "$ref": "SourceRange" },
                    { "name": "text", "type": "string" }
                ],
                "returns": [
                    { "name": "media", "$ref": "CSSMedia", "description": "The resulting CSS media rule after modification." }
                ],
                "description": "Modifies the rule selector."
            },
            {
                "name": "createStyleSheet",
                "parameters": [
                    { "name": "frameId", "$ref": "Page.FrameId", "description": "Identifier of the frame where \"via-inspector\" stylesheet should be created."}
                ],
                "returns": [
                    { "name": "styleSheetId", "$ref": "StyleSheetId", "description": "Identifier of the created \"via-inspector\" stylesheet." }
                ],
                "description": "Creates a new special \"via-inspector\" stylesheet in the frame with given <code>frameId</code>."
            },
            {
                "name": "addRule",
                "parameters": [
                    { "name": "styleSheetId", "$ref": "StyleSheetId", "description": "The css style sheet identifier where a new rule should be inserted." },
                    { "name": "ruleText", "type": "string", "description": "The text of a new rule." },
                    { "name": "location", "$ref": "SourceRange", "description": "Text position of a new rule in the target style sheet." }
                ],
                "returns": [
                    { "name": "rule", "$ref": "CSSRule", "description": "The newly created rule." }
                ],
                "description": "Inserts a new rule with the given <code>ruleText</code> in a stylesheet with given <code>styleSheetId</code>, at the position specified by <code>location</code>."
            },
            {
                "name": "forcePseudoState",
                "parameters": [
                    { "name": "nodeId", "$ref": "DOM.NodeId", "description": "The element id for which to force the pseudo state." },
                    { "name": "forcedPseudoClasses", "type": "array", "items": { "type": "string", "enum": ["active", "focus", "hover", "visited"] }, "description": "Element pseudo classes to force when computing the element's style." }
                ],
                "description": "Ensures that the given node will have specified pseudo-classes whenever its style is computed by the browser."
            },
            {
                "name": "getMediaQueries",
                "returns": [
                    { "name": "medias", "type": "array", "items": { "$ref": "CSSMedia" } }
                ],
                "description": "Returns all media queries parsed by the rendering engine.",
                "hidden": true
            }
        ],
        "events": [
            {
                "name": "mediaQueryResultChanged",
                "description": "Fires whenever a MediaQuery result changes (for example, after a browser window has been resized.) The current implementation considers only viewport-dependent media features."
            },
            {
                "name": "styleSheetChanged",
                "parameters": [
                    { "name": "styleSheetId", "$ref": "StyleSheetId" }
                ],
                "description": "Fired whenever a stylesheet is changed as a result of the client operation."
            },
            {
                "name": "styleSheetAdded",
                "parameters": [
                    { "name": "header", "$ref": "CSSStyleSheetHeader", "description": "Added stylesheet metainfo." }
                ],
                "description": "Fired whenever an active document stylesheet is added."
            },
            {
                "name": "styleSheetRemoved",
                "parameters": [
                    { "name": "styleSheetId", "$ref": "StyleSheetId", "description": "Identifier of the removed stylesheet." }
                ],
                "description": "Fired whenever an active document stylesheet is removed."
            }
        ]
    },
    {
        "domain": "Timeline",
        "description": "Timeline domain is deprecated. Please use Tracing instead.",
        "types": [
            {
                "id": "TimelineEvent",
                "type": "object",
                "properties": [
                    { "name": "type", "type": "string", "description": "Event type." },
                    { "name": "data", "type": "object", "description": "Event data." },
                    { "name": "startTime", "type": "number", "description": "Start time." },
                    { "name": "endTime", "type": "number", "optional": true, "description": "End time." },
                    { "name": "children", "type": "array", "optional": true, "items": { "$ref": "TimelineEvent" }, "description": "Nested records." },
                    { "name": "thread", "type": "string", "optional": true, "hidden": true, "description": "If present, identifies the thread that produced the event." },
                    { "name": "stackTrace", "$ref": "Console.StackTrace", "optional": true, "hidden": true, "description": "Stack trace." },
                    { "name": "frameId", "type": "string", "optional": true, "hidden": true, "description": "Unique identifier of the frame within the page that the event relates to." }
                ],
                "description": "Timeline record contains information about the recorded activity."
            }
        ],
        "commands": [
            {
                "name": "enable",
                "description": "Deprecated."
            },
            {
                "name": "disable",
                "description": "Deprecated."
            },
            {
                "name": "start",
                "parameters": [
                    { "name": "maxCallStackDepth", "optional": true, "type": "integer", "description": "Samples JavaScript stack traces up to <code>maxCallStackDepth</code>, defaults to 5." },
                    { "name": "bufferEvents", "optional": true, "type": "boolean", "hidden": true, "description": "Whether instrumentation events should be buffered and returned upon <code>stop</code> call." },
                    { "name": "liveEvents", "optional": true, "type": "string", "hidden": true, "description": "Coma separated event types to issue although bufferEvents is set."},
                    { "name": "includeCounters", "optional": true, "type": "boolean", "hidden": true, "description": "Whether counters data should be included into timeline events." },
                    { "name": "includeGPUEvents", "optional": true, "type": "boolean", "hidden": true, "description": "Whether events from GPU process should be collected." }
                ],
                "description": "Deprecated."
            },
            {
                "name": "stop",
                "description": "Deprecated."
            }
        ],
        "events": [
            {
                "name": "eventRecorded",
                "parameters": [
                    { "name": "record", "$ref": "TimelineEvent", "description": "Timeline event record data." }
                ],
                "description": "Deprecated."
            }
        ]
    },
    {
        "domain": "Debugger",
        "description": "Debugger domain exposes JavaScript debugging capabilities. It allows setting and removing breakpoints, stepping through execution, exploring stack traces, etc.",
        "types": [
            {
                "id": "BreakpointId",
                "type": "string",
                "description": "Breakpoint identifier."
            },
            {
                "id": "ScriptId",
                "type": "string",
                "description": "Unique script identifier."
            },
            {
                "id": "CallFrameId",
                "type": "string",
                "description": "Call frame identifier."
            },
            {
                "id": "Location",
                "type": "object",
                "properties": [
                    { "name": "scriptId", "$ref": "ScriptId", "description": "Script identifier as reported in the <code>Debugger.scriptParsed</code>." },
                    { "name": "lineNumber", "type": "integer", "description": "Line number in the script (0-based)." },
                    { "name": "columnNumber", "type": "integer", "optional": true, "description": "Column number in the script (0-based)." }
                ],
                "description": "Location in the source code."
            },
            {
                "id": "FunctionDetails",
                "hidden": true,
                "type": "object",
                "properties": [
                    { "name": "location", "$ref": "Location", "optional": true, "description": "Location of the function, none for native functions." },
                    { "name": "functionName", "type": "string", "description": "Name of the function." },
                    { "name": "isGenerator", "type": "boolean", "description": "Whether this is a generator function." },
                    { "name": "scopeChain", "type": "array", "optional": true, "items": { "$ref": "Scope" }, "description": "Scope chain for this closure." }
                ],
                "description": "Information about the function."
            },
            {
                "id": "GeneratorObjectDetails",
                "hidden": true,
                "type": "object",
                "properties": [
                    { "name": "function", "$ref": "Runtime.RemoteObject", "description": "Generator function." },
                    { "name": "functionName", "type": "string", "description": "Name of the generator function." },
                    { "name": "status", "type": "string", "enum": ["running", "suspended", "closed"], "description": "Current generator object status." },
                    { "name": "location", "$ref": "Location", "optional": true, "description": "If suspended, location where generator function was suspended (e.g. location of the last 'yield'). Otherwise, location of the generator function." }
                ],
                "description": "Information about the generator object."
            },
            {
                "id": "CollectionEntry",
                "hidden": true,
                "type": "object",
                "properties": [
                    { "name": "key", "$ref": "Runtime.RemoteObject", "optional": true, "description": "Entry key of a map-like collection, otherwise not provided." },
                    { "name": "value", "$ref": "Runtime.RemoteObject", "description": "Entry value." }
                ],
                "description": "Collection entry."
            },
            {
                "id": "CallFrame",
                "type": "object",
                "properties": [
                    { "name": "callFrameId", "$ref": "CallFrameId", "description": "Call frame identifier. This identifier is only valid while the virtual machine is paused." },
                    { "name": "functionName", "type": "string", "description": "Name of the JavaScript function called on this call frame." },
                    { "name": "functionLocation", "$ref": "Location", "optional": true, "hidden": true, "description": "Location in the source code." },
                    { "name": "location", "$ref": "Location", "description": "Location in the source code." },
                    { "name": "scopeChain", "type": "array", "items": { "$ref": "Scope" }, "description": "Scope chain for this call frame." },
                    { "name": "this", "$ref": "Runtime.RemoteObject", "description": "<code>this</code> object for this call frame." },
                    { "name": "returnValue", "$ref": "Runtime.RemoteObject", "optional": true, "hidden": true, "description": "The value being returned, if the function is at return point." }
                ],
                "description": "JavaScript call frame. Array of call frames form the call stack."
            },
            {
                "id": "StackTrace",
                "type": "object",
                "properties": [
                    { "name": "callFrames", "type": "array", "items": { "$ref": "CallFrame" }, "description": "Call frames of the stack trace." },
                    { "name": "description", "type": "string", "optional": true, "description": "String label of this stack trace. For async traces this may be a name of the function that initiated the async call." },
                    { "name": "asyncStackTrace", "$ref": "StackTrace", "optional": true, "description": "Async stack trace, if any." }
                ],
                "description": "JavaScript call stack, including async stack traces.",
                "hidden": true
            },
            {
                "id": "Scope",
                "type": "object",
                "properties": [
                    { "name": "type", "type": "string", "enum": ["global", "local", "with", "closure", "catch", "block", "script"], "description": "Scope type." },
                    { "name": "object", "$ref": "Runtime.RemoteObject", "description": "Object representing the scope. For <code>global</code> and <code>with</code> scopes it represents the actual object; for the rest of the scopes, it is artificial transient object enumerating scope variables as its properties." }
                ],
                "description": "Scope description."
            },
            {
                "id": "ExceptionDetails",
                "type": "object",
                "description": "Detailed information on exception (or error) that was thrown during script compilation or execution.",
                "properties": [
                    { "name": "text", "type": "string", "description": "Exception text." },
                    { "name": "url", "type": "string", "optional": true, "description": "URL of the message origin." },
                    { "name": "scriptId", "type": "string", "optional": true, "description": "Script ID of the message origin." },
                    { "name": "line", "type": "integer", "optional": true, "description": "Line number in the resource that generated this message." },
                    { "name": "column", "type": "integer", "optional": true, "description": "Column number in the resource that generated this message." },
                    { "name": "stackTrace", "$ref": "Console.StackTrace", "optional": true, "description": "JavaScript stack trace for assertions and error messages." }
                ]
            },
            {
                "id": "SetScriptSourceError",
                "type": "object",
                "properties": [
                    { "name": "compileError", "optional": true, "type": "object", "properties":
                        [
                            { "name": "message", "type": "string", "description": "Compiler error message" },
                            { "name": "lineNumber", "type": "integer", "description": "Compile error line number (1-based)" },
                            { "name": "columnNumber", "type": "integer", "description": "Compile error column number (1-based)" }
                        ]
                    }
                ],
                "description": "Error data for setScriptSource command. compileError is a case type for uncompilable script source error.",
                "hidden": true
            },
            {
                "id": "PromiseDetails",
                "type": "object",
                "description": "Information about the promise.",
                "properties": [
                    { "name": "id", "type": "integer", "description": "Unique id of the promise." },
                    { "name": "status", "type": "string", "enum": ["pending", "resolved", "rejected"], "description": "Status of the promise." },
                    { "name": "parentId", "type": "integer", "optional": true, "description": "Id of the parent promise." },
                    { "name": "callFrame", "$ref": "Console.CallFrame", "optional": true, "description": "Top call frame on promise creation."},
                    { "name": "creationTime", "type": "number", "optional": true, "description": "Creation time of the promise." },
                    { "name": "settlementTime", "type": "number", "optional": true, "description": "Settlement time of the promise." },
                    { "name": "creationStack", "$ref": "Console.StackTrace", "optional": true, "description": "JavaScript stack trace on promise creation." },
                    { "name": "asyncCreationStack", "$ref": "Console.AsyncStackTrace", "optional": true, "description": "JavaScript asynchronous stack trace on promise creation, if available." },
                    { "name": "settlementStack", "$ref": "Console.StackTrace", "optional": true, "description": "JavaScript stack trace on promise settlement." },
                    { "name": "asyncSettlementStack", "$ref": "Console.AsyncStackTrace", "optional": true, "description": "JavaScript asynchronous stack trace on promise settlement, if available." }
                ],
                "hidden": true
            },
            {
                "id": "AsyncOperation",
                "type": "object",
                "description": "Information about the async operation.",
                "properties": [
                    { "name": "id", "type": "integer", "description": "Unique id of the async operation." },
                    { "name": "description", "type": "string", "description": "String description of the async operation." },
                    { "name": "stackTrace", "$ref": "Console.StackTrace", "optional": true, "description": "Stack trace where async operation was scheduled." },
                    { "name": "asyncStackTrace", "$ref": "Console.AsyncStackTrace", "optional": true, "description": "Asynchronous stack trace where async operation was scheduled, if available." }
                ],
                "hidden": true
            },
            {
                "id": "SearchMatch",
                "type": "object",
                "description": "Search match for resource.",
                "properties": [
                    { "name": "lineNumber", "type": "number", "description": "Line number in resource content." },
                    { "name": "lineContent", "type": "string", "description": "Line with match content." }
                ],
                "hidden": true
            }
        ],
        "commands": [
            {
                "name": "enable",
                "description": "Enables debugger for the given page. Clients should not assume that the debugging has been enabled until the result for this command is received."
            },
            {
                "name": "disable",
                "description": "Disables debugger for given page."
            },
            {
                "name": "setBreakpointsActive",
                "parameters": [
                    { "name": "active", "type": "boolean", "description": "New value for breakpoints active state." }
                ],
                "description": "Activates / deactivates all breakpoints on the page."
            },
            {
                "name": "setSkipAllPauses",
                "hidden": true,
                "parameters": [
                    { "name": "skipped", "type": "boolean", "description": "New value for skip pauses state." }
                ],
                "description": "Makes page not interrupt on any pauses (breakpoint, exception, dom exception etc)."
            },
            {
                "name": "setBreakpointByUrl",
                "parameters": [
                    { "name": "lineNumber", "type": "integer", "description": "Line number to set breakpoint at." },
                    { "name": "url", "type": "string", "optional": true, "description": "URL of the resources to set breakpoint on." },
                    { "name": "urlRegex", "type": "string", "optional": true, "description": "Regex pattern for the URLs of the resources to set breakpoints on. Either <code>url</code> or <code>urlRegex</code> must be specified." },
                    { "name": "columnNumber", "type": "integer", "optional": true, "description": "Offset in the line to set breakpoint at." },
                    { "name": "condition", "type": "string", "optional": true, "description": "Expression to use as a breakpoint condition. When specified, debugger will only stop on the breakpoint if this expression evaluates to true." }
                ],
                "returns": [
                    { "name": "breakpointId", "$ref": "BreakpointId", "description": "Id of the created breakpoint for further reference." },
                    { "name": "locations", "type": "array", "items": { "$ref": "Location" }, "description": "List of the locations this breakpoint resolved into upon addition." }
                ],
                "description": "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 <code>locations</code> property. Further matching script parsing will result in subsequent <code>breakpointResolved</code> events issued. This logical breakpoint will survive page reloads."
            },
            {
                "name": "setBreakpoint",
                "parameters": [
                    { "name": "location", "$ref": "Location", "description": "Location to set breakpoint in." },
                    { "name": "condition", "type": "string", "optional": true, "description": "Expression to use as a breakpoint condition. When specified, debugger will only stop on the breakpoint if this expression evaluates to true." }
                ],
                "returns": [
                    { "name": "breakpointId", "$ref": "BreakpointId", "description": "Id of the created breakpoint for further reference." },
                    { "name": "actualLocation", "$ref": "Location", "description": "Location this breakpoint resolved into." }
                ],
                "description": "Sets JavaScript breakpoint at a given location."
            },
            {
                "name": "removeBreakpoint",
                "parameters": [
                    { "name": "breakpointId", "$ref": "BreakpointId" }
                ],
                "description": "Removes JavaScript breakpoint."
            },
            {
                "name": "continueToLocation",
                "parameters": [
                    { "name": "location", "$ref": "Location", "description": "Location to continue to." },
                    { "name": "interstatementLocation", "type": "boolean", "optional": true, "hidden": true, "description": "Allows breakpoints at the intemediate positions inside statements." }
                ],
                "description": "Continues execution until specific location is reached."
            },
            {
                "name": "stepOver",
                "description": "Steps over the statement."
            },
            {
                "name": "stepInto",
                "description": "Steps into the function call."
            },
            {
                "name": "stepOut",
                "description": "Steps out of the function call."
            },
            {
                "name": "pause",
                "description": "Stops on the next JavaScript statement."
            },
            {
                "name": "resume",
                "description": "Resumes JavaScript execution."
            },
            {
                "name": "stepIntoAsync",
                "description": "Steps into the first async operation handler that was scheduled by or after the current statement.",
                "hidden": true
            },
            {
                "name": "searchInContent",
                "parameters": [
                    { "name": "scriptId", "$ref": "ScriptId", "description": "Id of the script to search in." },
                    { "name": "query", "type": "string", "description": "String to search for."  },
                    { "name": "caseSensitive", "type": "boolean", "optional": true, "description": "If true, search is case sensitive." },
                    { "name": "isRegex", "type": "boolean", "optional": true, "description": "If true, treats string parameter as regex." }
                ],
                "returns": [
                    { "name": "result", "type": "array", "items": { "$ref": "SearchMatch" }, "description": "List of search matches." }
                ],
                "description": "Searches for given string in script content."
            },
            {
                "name": "canSetScriptSource",
                "returns": [
                    { "name": "result", "type": "boolean", "description": "True if <code>setScriptSource</code> is supported." }
                ],
                "description": "Always returns true."
            },
            {
                "name": "setScriptSource",
                "parameters": [
                    { "name": "scriptId", "$ref": "ScriptId", "description": "Id of the script to edit." },
                    { "name": "scriptSource", "type": "string", "description": "New content of the script." },
                    { "name": "preview", "type": "boolean", "optional": true, "description": " If true the change will not actually be applied. Preview mode may be used to get result description without actually modifying the code.", "hidden": true }
                ],
                "returns": [
                    { "name": "callFrames", "type": "array", "optional": true, "items": { "$ref": "CallFrame" }, "description": "New stack trace in case editing has happened while VM was stopped." },
                    { "name": "result", "type": "object", "optional": true, "description": "VM-specific description of the changes applied.", "hidden": true },
                    { "name": "asyncStackTrace", "$ref": "StackTrace", "optional": true, "description": "Async stack trace, if any.", "hidden": true }
                ],
                "error": {
                    "$ref": "SetScriptSourceError"
                },
                "description": "Edits JavaScript source live."
            },
            {
                "name": "restartFrame",
                "parameters": [
                    { "name": "callFrameId", "$ref": "CallFrameId", "description": "Call frame identifier to evaluate on." }
                ],
                "returns": [
                    { "name": "callFrames", "type": "array", "items": { "$ref": "CallFrame" }, "description": "New stack trace." },
                    { "name": "result", "type": "object", "description": "VM-specific description." },
                    { "name": "asyncStackTrace", "$ref": "StackTrace", "optional": true, "description": "Async stack trace, if any." }
                ],
                "hidden": true,
                "description": "Restarts particular call frame from the beginning."
            },
            {
                "name": "getScriptSource",
                "parameters": [
                    { "name": "scriptId", "$ref": "ScriptId", "description": "Id of the script to get source for." }
                ],
                "returns": [
                    { "name": "scriptSource", "type": "string", "description": "Script source." }
                ],
                "description": "Returns source for the script with given id."
            },
            {
                "name": "getFunctionDetails",
                "hidden": true,
                "parameters": [
                    { "name": "functionId", "$ref": "Runtime.RemoteObjectId", "description": "Id of the function to get details for." }
                ],
                "returns": [
                    { "name": "details", "$ref": "FunctionDetails", "description": "Information about the function." }
                ],
                "description": "Returns detailed information on given function."
            },
            {
                "name": "getGeneratorObjectDetails",
                "hidden": true,
                "parameters": [
                    { "name": "objectId", "$ref": "Runtime.RemoteObjectId", "description": "Id of the generator object to get details for." }
                ],
                "returns": [
                    { "name": "details", "$ref": "GeneratorObjectDetails", "description": "Information about the generator object." }
                ],
                "description": "Returns detailed information on given generator object."
            },
            {
                "name": "getCollectionEntries",
                "hidden": true,
                "parameters": [
                    { "name": "objectId", "$ref": "Runtime.RemoteObjectId", "description": "Id of the collection to get entries for." }
                ],
                "returns": [
                    { "name": "entries", "type": "array", "items": { "$ref": "CollectionEntry" }, "description": "Array of collection entries." }
                ],
                "description": "Returns entries of given collection."
            },
            {
                "name": "setPauseOnExceptions",
                "parameters": [
                    { "name": "state", "type": "string", "enum": ["none", "uncaught", "all"], "description": "Pause on exceptions mode." }
                ],
                "description": "Defines pause on exceptions state. Can be set to stop on all exceptions, uncaught exceptions or no exceptions. Initial pause on exceptions state is <code>none</code>."
            },
            {
                "name": "evaluateOnCallFrame",
                "parameters": [
                    { "name": "callFrameId", "$ref": "CallFrameId", "description": "Call frame identifier to evaluate on." },
                    { "name": "expression", "type": "string", "description": "Expression to evaluate." },
                    { "name": "objectGroup", "type": "string", "optional": true, "description": "String object group name to put result into (allows rapid releasing resulting object handles using <code>releaseObjectGroup</code>)." },
                    { "name": "includeCommandLineAPI", "type": "boolean", "optional": true, "description": "Specifies whether command line API should be available to the evaluated expression, defaults to false.", "hidden": true },
                    { "name": "doNotPauseOnExceptionsAndMuteConsole", "type": "boolean", "optional": true, "description": "Specifies whether evaluation should stop on exceptions and mute console. Overrides setPauseOnException state.", "hidden": true },
                    { "name": "returnByValue", "type": "boolean", "optional": true, "description": "Whether the result is expected to be a JSON object that should be sent by value." },
                    { "name": "generatePreview", "type": "boolean", "optional": true, "hidden": true, "description": "Whether preview should be generated for the result." }
                ],
                "returns": [
                    { "name": "result", "$ref": "Runtime.RemoteObject", "description": "Object wrapper for the evaluation result." },
                    { "name": "wasThrown", "type": "boolean", "optional": true, "description": "True if the result was thrown during the evaluation." },
                    { "name": "exceptionDetails", "$ref": "ExceptionDetails", "optional": true, "hidden": true, "description": "Exception details."}
                ],
                "description": "Evaluates expression on a given call frame."
            },
            {
                "name": "compileScript",
                "hidden": true,
                "parameters": [
                    { "name": "expression", "type": "string", "description": "Expression to compile." },
                    { "name": "sourceURL", "type": "string", "description": "Source url to be set for the script." },
                    { "name": "persistScript", "type": "boolean", "description": "Specifies whether the compiled script should be persisted." },
                    { "name": "executionContextId", "$ref": "Runtime.ExecutionContextId", "optional": true, "description": "Specifies in which isolated context to perform script run. Each content script lives in an isolated context and this parameter may be used to specify one of those contexts. If the parameter is omitted or 0 the evaluation will be performed in the context of the inspected page." }
                ],
                "returns": [
                    { "name": "scriptId", "$ref": "ScriptId", "optional": true, "description": "Id of the script." },
                    { "name": "exceptionDetails", "$ref": "ExceptionDetails", "optional": true, "description": "Exception details."}
                ],
                "description": "Compiles expression."
            },
            {
                "name": "runScript",
                "hidden": true,
                "parameters": [
                    { "name": "scriptId", "$ref": "ScriptId", "description": "Id of the script to run." },
                    { "name": "executionContextId", "$ref": "Runtime.ExecutionContextId", "optional": true, "description": "Specifies in which isolated context to perform script run. Each content script lives in an isolated context and this parameter may be used to specify one of those contexts. If the parameter is omitted or 0 the evaluation will be performed in the context of the inspected page." },
                    { "name": "objectGroup", "type": "string", "optional": true, "description": "Symbolic group name that can be used to release multiple objects." },
                    { "name": "doNotPauseOnExceptionsAndMuteConsole", "type": "boolean", "optional": true, "description": "Specifies whether script run should stop on exceptions and mute console. Overrides setPauseOnException state." }
                ],
                "returns": [
                    { "name": "result", "$ref": "Runtime.RemoteObject", "description": "Run result." },
                    { "name": "exceptionDetails", "$ref": "ExceptionDetails", "optional": true, "description": "Exception details."}
                ],
                "description": "Runs script with given id in a given context."
            },
            {
                "name": "setVariableValue",
                "parameters": [
                    { "name": "scopeNumber", "type": "integer", "description": "0-based number of scope as was listed in scope chain. Only 'local', 'closure' and 'catch' scope types are allowed. Other scopes could be manipulated manually." },
                    { "name": "variableName", "type": "string", "description": "Variable name." },
                    { "name": "newValue", "$ref": "Runtime.CallArgument", "description": "New variable value." },
                    { "name": "callFrameId", "$ref": "CallFrameId", "optional": true, "description": "Id of callframe that holds variable." },
                    { "name": "functionObjectId", "$ref": "Runtime.RemoteObjectId", "optional": true, "description": "Object id of closure (function) that holds variable." }
                ],
                "hidden": true,
                "description": "Changes value of variable in a callframe or a closure. Either callframe or function must be specified. Object-based scopes are not supported and must be mutated manually."
            },
            {
                "name": "getStepInPositions",
                "parameters": [
                    { "name": "callFrameId", "$ref": "CallFrameId", "description": "Id of a call frame where the current statement should be analized" }
                ],
                "returns": [
                    { "name": "stepInPositions", "type": "array", "items": { "$ref": "Location" }, "optional": true, "description": "experimental" }
                ],
                "hidden": true,
                "description": "Lists all positions where step-in is possible for a current statement in a specified call frame"
            },
            {
                "name": "getBacktrace",
                "returns": [
                    { "name": "callFrames", "type": "array", "items": { "$ref": "CallFrame" }, "description": "Call stack the virtual machine stopped on." },
                    { "name": "asyncStackTrace", "$ref": "StackTrace", "optional": true, "description": "Async stack trace, if any." }
                ],
                "hidden": true,
                "description": "Returns call stack including variables changed since VM was paused. VM must be paused."
            },
            {
                "name": "skipStackFrames",
                "parameters": [
                    { "name": "script", "type": "string", "optional": true, "description": "Regular expression defining the scripts to ignore while stepping." },
                    { "name": "skipContentScripts", "type": "boolean", "optional": true, "description": "True, if all content scripts should be ignored." }
                ],
                "hidden": true,
                "description": "Makes backend skip steps in the sources with names matching given pattern. VM will try leave blacklisted scripts by performing 'step in' several times, finally resorting to 'step out' if unsuccessful."
            },
            {
                "name": "setAsyncCallStackDepth",
                "parameters": [
                    { "name": "maxDepth", "type": "integer", "description": "Maximum depth of async call stacks. Setting to <code>0</code> will effectively disable collecting async call stacks (default)." }
                ],
                "hidden": true,
                "description": "Enables or disables async call stacks tracking."
            },
            {
                "name": "enablePromiseTracker",
                "parameters": [
                    { "name": "captureStacks", "type": "boolean", "optional": true, "description": "Whether to capture stack traces for promise creation and settlement events (default: false)." }
                ],
                "hidden": true,
                "description": "Enables promise tracking, information about <code>Promise</code>s created or updated will now be stored on the backend."
            },
            {
                "name": "disablePromiseTracker",
                "hidden": true,
                "description": "Disables promise tracking."
            },
            {
                "name": "getPromises",
                "returns": [
                    { "name": "promises", "type": "array", "items": { "$ref": "PromiseDetails" }, "description": "Information about stored promises." }
                ],
                "hidden": true,
                "description": "Returns detailed information about all <code>Promise</code>s that were created or updated after the <code>enablePromiseTracker</code> command, and have not been garbage collected yet."
            },
            {
                "name": "getPromiseById",
                "parameters": [
                    { "name": "promiseId", "type": "integer" },
                    { "name": "objectGroup", "type": "string", "optional": true, "description": "Symbolic group name that can be used to release multiple objects." }
                ],
                "returns": [
                    { "name": "promise", "$ref": "Runtime.RemoteObject", "description": "Object wrapper for <code>Promise</code> with specified ID, if any." }
                ],
                "hidden": true,
                "description": "Returns <code>Promise</code> with specified ID."
            },
            {
                "name": "flushAsyncOperationEvents",
                "hidden": true,
                "description": "Fires pending <code>asyncOperationStarted</code> events (if any), as if a debugger stepping session has just been started."
            },
            {
                "name": "setAsyncOperationBreakpoint",
                "parameters": [
                    { "name": "operationId", "type": "integer", "description": "ID of the async operation to set breakpoint for." }
                ],
                "hidden": true,
                "description": "Sets breakpoint on AsyncOperation callback handler."
            },
            {
                "name": "removeAsyncOperationBreakpoint",
                "parameters": [
                    { "name": "operationId", "type": "integer", "description": "ID of the async operation to remove breakpoint for." }
                ],
                "hidden": true,
                "description": "Removes AsyncOperation breakpoint."
            }
        ],
        "events": [
            {
                "name": "globalObjectCleared",
                "description": "Called when global has been cleared and debugger client should reset its state. Happens upon navigation or reload."
            },
            {
                "name": "scriptParsed",
                "parameters": [
                    { "name": "scriptId", "$ref": "ScriptId", "description": "Identifier of the script parsed." },
                    { "name": "url", "type": "string", "description": "URL or name of the script parsed (if any)." },
                    { "name": "startLine", "type": "integer", "description": "Line offset of the script within the resource with given URL (for script tags)." },
                    { "name": "startColumn", "type": "integer", "description": "Column offset of the script within the resource with given URL." },
                    { "name": "endLine", "type": "integer", "description": "Last line of the script." },
                    { "name": "endColumn", "type": "integer", "description": "Length of the last line of the script." },
                    { "name": "isContentScript", "type": "boolean", "optional": true, "description": "Determines whether this script is a user extension script." },
                    { "name": "isInternalScript", "type": "boolean", "optional": true, "description": "Determines whether this script is an internal script.", "hidden": true },
                    { "name": "sourceMapURL", "type": "string", "optional": true, "description": "URL of source map associated with script (if any)." },
                    { "name": "hasSourceURL", "type": "boolean", "optional": true, "description": "True, if this script has sourceURL.", "hidden": true }
                ],
                "description": "Fired when virtual machine parses script. This event is also fired for all known and uncollected scripts upon enabling debugger."
            },
            {
                "name": "scriptFailedToParse",
                "parameters": [
                    { "name": "scriptId", "$ref": "ScriptId", "description": "Identifier of the script parsed." },
                    { "name": "url", "type": "string", "description": "URL or name of the script parsed (if any)." },
                    { "name": "startLine", "type": "integer", "description": "Line offset of the script within the resource with given URL (for script tags)." },
                    { "name": "startColumn", "type": "integer", "description": "Column offset of the script within the resource with given URL." },
                    { "name": "endLine", "type": "integer", "description": "Last line of the script." },
                    { "name": "endColumn", "type": "integer", "description": "Length of the last line of the script." },
                    { "name": "isContentScript", "type": "boolean", "optional": true, "description": "Determines whether this script is a user extension script." },
                    { "name": "isInternalScript", "type": "boolean", "optional": true, "description": "Determines whether this script is an internal script.", "hidden": true },
                    { "name": "sourceMapURL", "type": "string", "optional": true, "description": "URL of source map associated with script (if any)." },
                    { "name": "hasSourceURL", "type": "boolean", "optional": true, "description": "True, if this script has sourceURL.", "hidden": true }
                ],
                "description": "Fired when virtual machine fails to parse the script."
            },
            {
                "name": "breakpointResolved",
                "parameters": [
                    { "name": "breakpointId", "$ref": "BreakpointId", "description": "Breakpoint unique identifier." },
                    { "name": "location", "$ref": "Location", "description": "Actual breakpoint location." }
                ],
                "description": "Fired when breakpoint is resolved to an actual script and location."
            },
            {
                "name": "paused",
                "parameters": [
                    { "name": "callFrames", "type": "array", "items": { "$ref": "CallFrame" }, "description": "Call stack the virtual machine stopped on." },
                    { "name": "reason", "type": "string", "enum": [ "XHR", "DOM", "EventListener", "exception", "assert", "CSPViolation", "debugCommand", "promiseRejection", "AsyncOperation", "other" ], "description": "Pause reason." },
                    { "name": "data", "type": "object", "optional": true, "description": "Object containing break-specific auxiliary properties." },
                    { "name": "hitBreakpoints", "type": "array", "optional": true, "items": { "type": "string" }, "description": "Hit breakpoints IDs", "hidden": true },
                    { "name": "asyncStackTrace", "$ref": "StackTrace", "optional": true, "description": "Async stack trace, if any.", "hidden": true }
                ],
                "description": "Fired when the virtual machine stopped on breakpoint or exception or any other stop criteria."
            },
            {
                "name": "resumed",
                "description": "Fired when the virtual machine resumed execution."
            },
            {
                "name": "promiseUpdated",
                "parameters": [
                    { "name": "eventType", "type": "string", "enum": ["new", "update", "gc"], "description": "Type of the event." },
                    { "name": "promise", "$ref": "PromiseDetails", "description": "Information about the updated <code>Promise</code>." }
                ],
                "description": "Fired when a <code>Promise</code> is created, updated or garbage collected.",
                "hidden": true
            },
            {
                "name": "asyncOperationStarted",
                "parameters": [
                    { "name": "operation", "$ref": "AsyncOperation", "description": "Information about the async operation." }
                ],
                "description": "Fired when an async operation is scheduled (while in a debugger stepping session).",
                "hidden": true
            },
            {
                "name": "asyncOperationCompleted",
                "parameters": [
                    { "name": "id", "type": "integer", "description": "ID of the async operation that was completed." }
                ],
                "description": "Fired when an async operation is completed (while in a debugger stepping session).",
                "hidden": true
            }
        ]
    },
    {
        "domain": "DOMDebugger",
        "description": "DOM debugging allows setting breakpoints on particular DOM operations and events. JavaScript execution will stop on these operations as if there was a regular breakpoint set.",
        "types": [
            {
                "id": "DOMBreakpointType",
                "type": "string",
                "enum": ["subtree-modified", "attribute-modified", "node-removed"],
                "description": "DOM breakpoint type."
            }
        ],
        "commands": [
            {
                "name": "setDOMBreakpoint",
                "parameters": [
                    { "name": "nodeId", "$ref": "DOM.NodeId", "description": "Identifier of the node to set breakpoint on." },
                    { "name": "type", "$ref": "DOMBreakpointType", "description": "Type of the operation to stop upon." }
                ],
                "description": "Sets breakpoint on particular operation with DOM."
            },
            {
                "name": "removeDOMBreakpoint",
                "parameters": [
                    { "name": "nodeId", "$ref": "DOM.NodeId", "description": "Identifier of the node to remove breakpoint from." },
                    { "name": "type", "$ref": "DOMBreakpointType", "description": "Type of the breakpoint to remove." }
                ],
                "description": "Removes DOM breakpoint that was set using <code>setDOMBreakpoint</code>."
            },
            {
                "name": "setEventListenerBreakpoint",
                "parameters": [
                    { "name": "eventName", "type": "string", "description": "DOM Event name to stop on (any DOM event will do)." },
                    { "name": "targetName", "type": "string", "optional": true, "description": "EventTarget interface name to stop on. If equal to <code>\"*\"</code> or not provided, will stop on any EventTarget.", "hidden": true }
                ],
                "description": "Sets breakpoint on particular DOM event."
            },
            {
                "name": "removeEventListenerBreakpoint",
                "parameters": [
                    { "name": "eventName", "type": "string", "description": "Event name." },
                    { "name": "targetName", "type": "string", "optional": true, "description": "EventTarget interface name.", "hidden": true }
                ],
                "description": "Removes breakpoint on particular DOM event."
            },
            {
                "name": "setInstrumentationBreakpoint",
                "parameters": [
                    { "name": "eventName", "type": "string", "description": "Instrumentation name to stop on." }
                ],
                "description": "Sets breakpoint on particular native event.",
                "hidden": true
            },
            {
                "name": "removeInstrumentationBreakpoint",
                "parameters": [
                    { "name": "eventName", "type": "string", "description": "Instrumentation name to stop on." }
                ],
                "description": "Removes breakpoint on particular native event.",
                "hidden": true
            },
            {
                "name": "setXHRBreakpoint",
                "parameters": [
                    { "name": "url", "type": "string", "description": "Resource URL substring. All XHRs having this substring in the URL will get stopped upon." }
                ],
                "description": "Sets breakpoint on XMLHttpRequest."
            },
            {
                "name": "removeXHRBreakpoint",
                "parameters": [
                    { "name": "url", "type": "string", "description": "Resource URL substring." }
                ],
                "description": "Removes breakpoint from XMLHttpRequest."
            }
        ]
    },
    {
        "domain": "Profiler",
        "hidden": true,
        "types": [
            {
                "id": "CPUProfileNode",
                "type": "object",
                "description": "CPU Profile node. Holds callsite information, execution statistics and child nodes.",
                "properties": [
                    { "name": "functionName", "type": "string", "description": "Function name." },
                    { "name": "scriptId", "$ref": "Debugger.ScriptId", "description": "Script identifier." },
                    { "name": "url", "type": "string", "description": "URL." },
                    { "name": "lineNumber", "type": "integer", "description": "1-based line number of the function start position." },
                    { "name": "columnNumber", "type": "integer", "description": "1-based column number of the function start position." },
                    { "name": "hitCount", "type": "integer", "description": "Number of samples where this node was on top of the call stack." },
                    { "name": "callUID", "type": "number", "description": "Call UID." },
                    { "name": "children", "type": "array", "items": { "$ref": "CPUProfileNode" }, "description": "Child nodes." },
                    { "name": "deoptReason", "type": "string", "description": "The reason of being not optimized. The function may be deoptimized or marked as don't optimize."},
                    { "name": "id", "type": "integer", "description": "Unique id of the node." },
                    { "name": "positionTicks", "type": "array", "items": { "$ref": "PositionTickInfo" }, "description": "An array of source position ticks." }
                ]
            },
            {
                "id": "CPUProfile",
                "type": "object",
                "description": "Profile.",
                "properties": [
                    { "name": "head", "$ref": "CPUProfileNode" },
                    { "name": "startTime", "type": "number", "description": "Profiling start time in seconds." },
                    { "name": "endTime", "type": "number", "description": "Profiling end time in seconds." },
                    { "name": "samples", "optional": true, "type": "array", "items": { "type": "integer" }, "description": "Ids of samples top nodes." },
                    { "name": "timestamps", "optional": true, "type": "array", "items": { "type": "number" }, "description": "Timestamps of the samples in microseconds." }
                ]
            },
            {
                "id": "PositionTickInfo",
                "type": "object",
                "description": "Specifies a number of samples attributed to a certain source position.",
                "properties": [
                    { "name": "line", "type": "integer", "description": "Source line number (1-based)." },
                    { "name": "ticks", "type": "integer", "description": "Number of samples attributed to the source line." }
                ]
            }
        ],
        "commands": [
            {
                "name": "enable"
            },
            {
                "name": "disable"
            },
            {
                "name": "setSamplingInterval",
                "parameters": [
                    { "name": "interval", "type": "integer", "description": "New sampling interval in microseconds." }
                ],
                "description": "Changes CPU profiler sampling interval. Must be called before CPU profiles recording started."
            },
            {
                "name": "start"
            },
            {
                "name": "stop",
                "returns": [
                    { "name": "profile", "$ref": "CPUProfile", "description": "Recorded profile." }
                ]
            }
        ],
        "events": [
            {
                "name": "consoleProfileStarted",
                "parameters": [
                    { "name": "id", "type": "string" },
                    { "name": "location", "$ref": "Debugger.Location", "description": "Location of console.profile()." },
                    { "name": "title", "type": "string", "optional": true, "description": "Profile title passed as argument to console.profile()." }

                ],
                "description": "Sent when new profile recodring is started using console.profile() call."
            },
            {
                "name": "consoleProfileFinished",
                "parameters": [
                    { "name": "id", "type": "string" },
                    { "name": "location", "$ref": "Debugger.Location", "description": "Location of console.profileEnd()." },
                    { "name": "profile", "$ref": "CPUProfile" },
                    { "name": "title", "type": "string", "optional": true, "description": "Profile title passed as argunet to console.profile()." }
                ]
            }
        ]
    },
    {
        "domain": "HeapProfiler",
        "hidden": true,
        "types": [
            {
                "id": "HeapSnapshotObjectId",
                "type": "string",
                "description": "Heap snapshot object id."
            }
        ],
        "commands": [
            {
                "name": "enable"
            },
            {
                "name": "disable"
            },
            {
                "name": "startTrackingHeapObjects",
                "parameters": [
                    { "name": "trackAllocations", "type": "boolean", "optional": true }
                ]
            },
            {
                "name": "stopTrackingHeapObjects",
                "parameters": [
                    { "name": "reportProgress", "type": "boolean", "optional": true, "description": "If true 'reportHeapSnapshotProgress' events will be generated while snapshot is being taken when the tracking is stopped." }
                ]

            },
            {
                "name": "takeHeapSnapshot",
                "parameters": [
                    { "name": "reportProgress", "type": "boolean", "optional": true, "description": "If true 'reportHeapSnapshotProgress' events will be generated while snapshot is being taken." }
                ]
            },
            {
                "name": "collectGarbage"
            },
            {
                "name": "getObjectByHeapObjectId",
                "parameters": [
                    { "name": "objectId", "$ref": "HeapSnapshotObjectId" },
                    { "name": "objectGroup", "type": "string", "optional": true, "description": "Symbolic group name that can be used to release multiple objects." }
                ],
                "returns": [
                    { "name": "result", "$ref": "Runtime.RemoteObject", "description": "Evaluation result." }
                ]