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-rw-r--r--devtools/server/actors/object/previewers.js898
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diff --git a/devtools/server/actors/object/previewers.js b/devtools/server/actors/object/previewers.js
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+++ b/devtools/server/actors/object/previewers.js
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+const { Cu, Ci } = require("chrome");
+const { DevToolsServer } = require("devtools/server/devtools-server");
+const DevToolsUtils = require("devtools/shared/DevToolsUtils");
+loader.lazyRequireGetter(
+ this,
+ "ObjectUtils",
+ "devtools/server/actors/object/utils"
+);
+loader.lazyRequireGetter(
+ this,
+ "PropertyIterators",
+ "devtools/server/actors/object/property-iterator"
+);
+
+// Number of items to preview in objects, arrays, maps, sets, lists,
+// collections, etc.
+const OBJECT_PREVIEW_MAX_ITEMS = 10;
+
+/**
+ * Functions for adding information to ObjectActor grips for the purpose of
+ * having customized output. This object holds arrays mapped by
+ * Debugger.Object.prototype.class.
+ *
+ * In each array you can add functions that take three
+ * arguments:
+ * - the ObjectActor instance and its hooks to make a preview for,
+ * - the grip object being prepared for the client,
+ * - the raw JS object after calling Debugger.Object.unsafeDereference(). This
+ * argument is only provided if the object is safe for reading properties and
+ * executing methods. See DevToolsUtils.isSafeJSObject().
+ *
+ * Functions must return false if they cannot provide preview
+ * information for the debugger object, or true otherwise.
+ */
+const previewers = {
+ String: [
+ function(objectActor, grip, rawObj) {
+ return wrappedPrimitivePreviewer(
+ "String",
+ String,
+ objectActor,
+ grip,
+ rawObj
+ );
+ },
+ ],
+
+ Boolean: [
+ function(objectActor, grip, rawObj) {
+ return wrappedPrimitivePreviewer(
+ "Boolean",
+ Boolean,
+ objectActor,
+ grip,
+ rawObj
+ );
+ },
+ ],
+
+ Number: [
+ function(objectActor, grip, rawObj) {
+ return wrappedPrimitivePreviewer(
+ "Number",
+ Number,
+ objectActor,
+ grip,
+ rawObj
+ );
+ },
+ ],
+
+ Symbol: [
+ function(objectActor, grip, rawObj) {
+ return wrappedPrimitivePreviewer(
+ "Symbol",
+ Symbol,
+ objectActor,
+ grip,
+ rawObj
+ );
+ },
+ ],
+
+ Function: [
+ function({ obj, hooks }, grip) {
+ if (obj.name) {
+ grip.name = obj.name;
+ }
+
+ if (obj.displayName) {
+ grip.displayName = obj.displayName.substr(0, 500);
+ }
+
+ if (obj.parameterNames) {
+ grip.parameterNames = obj.parameterNames;
+ }
+
+ // Check if the developer has added a de-facto standard displayName
+ // property for us to use.
+ let userDisplayName;
+ try {
+ userDisplayName = obj.getOwnPropertyDescriptor("displayName");
+ } catch (e) {
+ // The above can throw "permission denied" errors when the debuggee
+ // does not subsume the function's compartment.
+ }
+
+ if (
+ userDisplayName &&
+ typeof userDisplayName.value == "string" &&
+ userDisplayName.value
+ ) {
+ grip.userDisplayName = hooks.createValueGrip(userDisplayName.value);
+ }
+
+ grip.isAsync = obj.isAsyncFunction;
+ grip.isGenerator = obj.isGeneratorFunction;
+
+ if (obj.script) {
+ grip.location = {
+ url: obj.script.url,
+ line: obj.script.startLine,
+ column: obj.script.startColumn,
+ };
+ }
+
+ return true;
+ },
+ ],
+
+ RegExp: [
+ function({ obj, hooks }, grip) {
+ const str = DevToolsUtils.callPropertyOnObject(obj, "toString");
+ if (typeof str != "string") {
+ return false;
+ }
+
+ grip.displayString = hooks.createValueGrip(str);
+ return true;
+ },
+ ],
+
+ Date: [
+ function({ obj, hooks }, grip) {
+ const time = DevToolsUtils.callPropertyOnObject(obj, "getTime");
+ if (typeof time != "number") {
+ return false;
+ }
+
+ grip.preview = {
+ timestamp: hooks.createValueGrip(time),
+ };
+ return true;
+ },
+ ],
+
+ Array: [
+ function({ obj, hooks }, grip) {
+ const length = ObjectUtils.getArrayLength(obj);
+
+ grip.preview = {
+ kind: "ArrayLike",
+ length: length,
+ };
+
+ if (hooks.getGripDepth() > 1) {
+ return true;
+ }
+
+ const raw = obj.unsafeDereference();
+ const items = (grip.preview.items = []);
+
+ for (let i = 0; i < length; ++i) {
+ if (raw && !isWorker) {
+ // Array Xrays filter out various possibly-unsafe properties (like
+ // functions, and claim that the value is undefined instead. This
+ // is generally the right thing for privileged code accessing untrusted
+ // objects, but quite confusing for Object previews. So we manually
+ // override this protection by waiving Xrays on the array, and re-applying
+ // Xrays on any indexed value props that we pull off of it.
+ const desc = Object.getOwnPropertyDescriptor(Cu.waiveXrays(raw), i);
+ if (desc && !desc.get && !desc.set) {
+ let value = Cu.unwaiveXrays(desc.value);
+ value = ObjectUtils.makeDebuggeeValueIfNeeded(obj, value);
+ items.push(hooks.createValueGrip(value));
+ } else if (!desc) {
+ items.push(null);
+ } else {
+ items.push(hooks.createValueGrip(undefined));
+ }
+ } else if (raw && !Object.getOwnPropertyDescriptor(raw, i)) {
+ items.push(null);
+ } else {
+ // Workers do not have access to Cu.
+ const value = DevToolsUtils.getProperty(obj, i);
+ items.push(hooks.createValueGrip(value));
+ }
+
+ if (items.length == OBJECT_PREVIEW_MAX_ITEMS) {
+ break;
+ }
+ }
+
+ return true;
+ },
+ ],
+
+ Set: [
+ function(objectActor, grip) {
+ const size = DevToolsUtils.getProperty(objectActor.obj, "size");
+ if (typeof size != "number") {
+ return false;
+ }
+
+ grip.preview = {
+ kind: "ArrayLike",
+ length: size,
+ };
+
+ // Avoid recursive object grips.
+ if (objectActor.hooks.getGripDepth() > 1) {
+ return true;
+ }
+
+ const items = (grip.preview.items = []);
+ for (const item of PropertyIterators.enumSetEntries(
+ objectActor,
+ /* forPreview */ true
+ )) {
+ items.push(item);
+ if (items.length == OBJECT_PREVIEW_MAX_ITEMS) {
+ break;
+ }
+ }
+
+ return true;
+ },
+ ],
+
+ WeakSet: [
+ function(objectActor, grip) {
+ const enumEntries = PropertyIterators.enumWeakSetEntries(
+ objectActor,
+ /* forPreview */ true
+ );
+
+ grip.preview = {
+ kind: "ArrayLike",
+ length: enumEntries.size,
+ };
+
+ // Avoid recursive object grips.
+ if (objectActor.hooks.getGripDepth() > 1) {
+ return true;
+ }
+
+ const items = (grip.preview.items = []);
+ for (const item of enumEntries) {
+ items.push(item);
+ if (items.length == OBJECT_PREVIEW_MAX_ITEMS) {
+ break;
+ }
+ }
+
+ return true;
+ },
+ ],
+
+ Map: [
+ function(objectActor, grip) {
+ const size = DevToolsUtils.getProperty(objectActor.obj, "size");
+ if (typeof size != "number") {
+ return false;
+ }
+
+ grip.preview = {
+ kind: "MapLike",
+ size: size,
+ };
+
+ if (objectActor.hooks.getGripDepth() > 1) {
+ return true;
+ }
+
+ const entries = (grip.preview.entries = []);
+ for (const entry of PropertyIterators.enumMapEntries(
+ objectActor,
+ /* forPreview */ true
+ )) {
+ entries.push(entry);
+ if (entries.length == OBJECT_PREVIEW_MAX_ITEMS) {
+ break;
+ }
+ }
+
+ return true;
+ },
+ ],
+
+ WeakMap: [
+ function(objectActor, grip) {
+ const enumEntries = PropertyIterators.enumWeakMapEntries(
+ objectActor,
+ /* forPreview */ true
+ );
+
+ grip.preview = {
+ kind: "MapLike",
+ size: enumEntries.size,
+ };
+
+ if (objectActor.hooks.getGripDepth() > 1) {
+ return true;
+ }
+
+ const entries = (grip.preview.entries = []);
+ for (const entry of enumEntries) {
+ entries.push(entry);
+ if (entries.length == OBJECT_PREVIEW_MAX_ITEMS) {
+ break;
+ }
+ }
+
+ return true;
+ },
+ ],
+
+ DOMStringMap: [
+ function({ obj, hooks }, grip, rawObj) {
+ if (!rawObj) {
+ return false;
+ }
+
+ const keys = obj.getOwnPropertyNames();
+ grip.preview = {
+ kind: "MapLike",
+ size: keys.length,
+ };
+
+ if (hooks.getGripDepth() > 1) {
+ return true;
+ }
+
+ const entries = (grip.preview.entries = []);
+ for (const key of keys) {
+ const value = ObjectUtils.makeDebuggeeValueIfNeeded(obj, rawObj[key]);
+ entries.push([key, hooks.createValueGrip(value)]);
+ if (entries.length == OBJECT_PREVIEW_MAX_ITEMS) {
+ break;
+ }
+ }
+
+ return true;
+ },
+ ],
+
+ Promise: [
+ function({ obj, hooks }, grip, rawObj) {
+ const { state, value, reason } = ObjectUtils.getPromiseState(obj);
+ const ownProperties = Object.create(null);
+ ownProperties["<state>"] = { value: state };
+ let ownPropertiesLength = 1;
+
+ // Only expose <value> or <reason> in top-level promises, to avoid recursion.
+ // <state> is not problematic because it's a string.
+ if (hooks.getGripDepth() === 1) {
+ if (state == "fulfilled") {
+ ownProperties["<value>"] = { value: hooks.createValueGrip(value) };
+ ++ownPropertiesLength;
+ } else if (state == "rejected") {
+ ownProperties["<reason>"] = { value: hooks.createValueGrip(reason) };
+ ++ownPropertiesLength;
+ }
+ }
+
+ grip.preview = {
+ kind: "Object",
+ ownProperties,
+ ownPropertiesLength,
+ };
+
+ return true;
+ },
+ ],
+
+ Proxy: [
+ function({ obj, hooks }, grip, rawObj) {
+ // Only preview top-level proxies, avoiding recursion. Otherwise, since both the
+ // target and handler can also be proxies, we could get an exponential behavior.
+ if (hooks.getGripDepth() > 1) {
+ return true;
+ }
+
+ // The `isProxy` getter of the debuggee object only detects proxies without
+ // security wrappers. If false, the target and handler are not available.
+ const hasTargetAndHandler = obj.isProxy;
+
+ grip.preview = {
+ kind: "Object",
+ ownProperties: Object.create(null),
+ ownPropertiesLength: 2 * hasTargetAndHandler,
+ };
+
+ if (hasTargetAndHandler) {
+ Object.assign(grip.preview.ownProperties, {
+ "<target>": { value: hooks.createValueGrip(obj.proxyTarget) },
+ "<handler>": { value: hooks.createValueGrip(obj.proxyHandler) },
+ });
+ }
+
+ return true;
+ },
+ ],
+};
+
+/**
+ * Generic previewer for classes wrapping primitives, like String,
+ * Number and Boolean.
+ *
+ * @param string className
+ * Class name to expect.
+ * @param object classObj
+ * The class to expect, eg. String. The valueOf() method of the class is
+ * invoked on the given object.
+ * @param ObjectActor objectActor
+ * The object actor
+ * @param Object grip
+ * The result grip to fill in
+ * @return Booolean true if the object was handled, false otherwise
+ */
+function wrappedPrimitivePreviewer(
+ className,
+ classObj,
+ objectActor,
+ grip,
+ rawObj
+) {
+ const { obj, hooks } = objectActor;
+
+ let v = null;
+ try {
+ v = classObj.prototype.valueOf.call(rawObj);
+ } catch (ex) {
+ // valueOf() can throw if the raw JS object is "misbehaved".
+ return false;
+ }
+
+ if (v === null) {
+ return false;
+ }
+
+ const canHandle = GenericObject(
+ objectActor,
+ grip,
+ rawObj,
+ className === "String"
+ );
+ if (!canHandle) {
+ return false;
+ }
+
+ grip.preview.wrappedValue = hooks.createValueGrip(
+ ObjectUtils.makeDebuggeeValueIfNeeded(obj, v)
+ );
+ return true;
+}
+
+function GenericObject(
+ objectActor,
+ grip,
+ rawObj,
+ specialStringBehavior = false
+) {
+ const { obj, hooks } = objectActor;
+ if (grip.preview || grip.displayString || hooks.getGripDepth() > 1) {
+ return false;
+ }
+
+ const preview = (grip.preview = {
+ kind: "Object",
+ ownProperties: Object.create(null),
+ ownSymbols: [],
+ });
+
+ const names = ObjectUtils.getPropNamesFromObject(obj, rawObj);
+ const symbols = ObjectUtils.getSafeOwnPropertySymbols(obj);
+
+ preview.ownPropertiesLength = names.length;
+ preview.ownSymbolsLength = symbols.length;
+
+ let length,
+ i = 0;
+ if (specialStringBehavior) {
+ length = DevToolsUtils.getProperty(obj, "length");
+ if (typeof length != "number") {
+ specialStringBehavior = false;
+ }
+ }
+
+ for (const name of names) {
+ if (specialStringBehavior && /^[0-9]+$/.test(name)) {
+ const num = parseInt(name, 10);
+ if (num.toString() === name && num >= 0 && num < length) {
+ continue;
+ }
+ }
+
+ const desc = objectActor._propertyDescriptor(name, true);
+ if (!desc) {
+ continue;
+ }
+
+ preview.ownProperties[name] = desc;
+ if (++i == OBJECT_PREVIEW_MAX_ITEMS) {
+ break;
+ }
+ }
+
+ for (const symbol of symbols) {
+ const descriptor = objectActor._propertyDescriptor(symbol, true);
+ if (!descriptor) {
+ continue;
+ }
+
+ preview.ownSymbols.push(
+ Object.assign(
+ {
+ descriptor,
+ },
+ hooks.createValueGrip(symbol)
+ )
+ );
+
+ if (++i == OBJECT_PREVIEW_MAX_ITEMS) {
+ break;
+ }
+ }
+
+ if (i < OBJECT_PREVIEW_MAX_ITEMS) {
+ preview.safeGetterValues = objectActor._findSafeGetterValues(
+ Object.keys(preview.ownProperties),
+ OBJECT_PREVIEW_MAX_ITEMS - i
+ );
+ }
+
+ return true;
+}
+
+// Preview functions that do not rely on the object class.
+previewers.Object = [
+ function TypedArray({ obj, hooks }, grip) {
+ if (!ObjectUtils.isTypedArray(obj)) {
+ return false;
+ }
+
+ grip.preview = {
+ kind: "ArrayLike",
+ length: ObjectUtils.getArrayLength(obj),
+ };
+
+ if (hooks.getGripDepth() > 1) {
+ return true;
+ }
+
+ const previewLength = Math.min(
+ OBJECT_PREVIEW_MAX_ITEMS,
+ grip.preview.length
+ );
+ grip.preview.items = [];
+ for (let i = 0; i < previewLength; i++) {
+ const desc = obj.getOwnPropertyDescriptor(i);
+ if (!desc) {
+ break;
+ }
+ grip.preview.items.push(desc.value);
+ }
+
+ return true;
+ },
+
+ function Error({ obj, hooks }, grip) {
+ switch (obj.class) {
+ case "Error":
+ case "EvalError":
+ case "RangeError":
+ case "ReferenceError":
+ case "SyntaxError":
+ case "TypeError":
+ case "URIError":
+ case "InternalError":
+ case "AggregateError":
+ case "CompileError":
+ case "DebuggeeWouldRun":
+ case "LinkError":
+ case "RuntimeError":
+ const name = DevToolsUtils.getProperty(obj, "name");
+ const msg = DevToolsUtils.getProperty(obj, "message");
+ const stack = DevToolsUtils.getProperty(obj, "stack");
+ const fileName = DevToolsUtils.getProperty(obj, "fileName");
+ const lineNumber = DevToolsUtils.getProperty(obj, "lineNumber");
+ const columnNumber = DevToolsUtils.getProperty(obj, "columnNumber");
+ grip.preview = {
+ kind: "Error",
+ name: hooks.createValueGrip(name),
+ message: hooks.createValueGrip(msg),
+ stack: hooks.createValueGrip(stack),
+ fileName: hooks.createValueGrip(fileName),
+ lineNumber: hooks.createValueGrip(lineNumber),
+ columnNumber: hooks.createValueGrip(columnNumber),
+ };
+ return true;
+ default:
+ return false;
+ }
+ },
+
+ function CSSMediaRule({ obj, hooks }, grip, rawObj) {
+ if (isWorker || !rawObj || obj.class != "CSSMediaRule") {
+ return false;
+ }
+ grip.preview = {
+ kind: "ObjectWithText",
+ text: hooks.createValueGrip(rawObj.conditionText),
+ };
+ return true;
+ },
+
+ function CSSStyleRule({ obj, hooks }, grip, rawObj) {
+ if (isWorker || !rawObj || obj.class != "CSSStyleRule") {
+ return false;
+ }
+ grip.preview = {
+ kind: "ObjectWithText",
+ text: hooks.createValueGrip(rawObj.selectorText),
+ };
+ return true;
+ },
+
+ function ObjectWithURL({ obj, hooks }, grip, rawObj) {
+ if (
+ isWorker ||
+ !rawObj ||
+ !(
+ obj.class == "CSSImportRule" ||
+ obj.class == "CSSStyleSheet" ||
+ obj.class == "Location" ||
+ rawObj instanceof Ci.nsIDOMWindow
+ )
+ ) {
+ return false;
+ }
+
+ let url;
+ if (rawObj instanceof Ci.nsIDOMWindow && rawObj.location) {
+ url = rawObj.location.href;
+ } else if (rawObj.href) {
+ url = rawObj.href;
+ } else {
+ return false;
+ }
+
+ grip.preview = {
+ kind: "ObjectWithURL",
+ url: hooks.createValueGrip(url),
+ };
+
+ return true;
+ },
+
+ function ArrayLike({ obj, hooks }, grip, rawObj) {
+ if (
+ isWorker ||
+ !rawObj ||
+ (obj.class != "DOMStringList" &&
+ obj.class != "DOMTokenList" &&
+ obj.class != "CSSRuleList" &&
+ obj.class != "MediaList" &&
+ obj.class != "StyleSheetList" &&
+ obj.class != "NamedNodeMap" &&
+ obj.class != "FileList" &&
+ obj.class != "NodeList")
+ ) {
+ return false;
+ }
+
+ if (typeof rawObj.length != "number") {
+ return false;
+ }
+
+ grip.preview = {
+ kind: "ArrayLike",
+ length: rawObj.length,
+ };
+
+ if (hooks.getGripDepth() > 1) {
+ return true;
+ }
+
+ const items = (grip.preview.items = []);
+
+ for (
+ let i = 0;
+ i < rawObj.length && items.length < OBJECT_PREVIEW_MAX_ITEMS;
+ i++
+ ) {
+ const value = ObjectUtils.makeDebuggeeValueIfNeeded(obj, rawObj[i]);
+ items.push(hooks.createValueGrip(value));
+ }
+
+ return true;
+ },
+
+ function CSSStyleDeclaration({ obj, hooks }, grip, rawObj) {
+ if (
+ isWorker ||
+ !rawObj ||
+ (obj.class != "CSSStyleDeclaration" && obj.class != "CSS2Properties")
+ ) {
+ return false;
+ }
+
+ grip.preview = {
+ kind: "MapLike",
+ size: rawObj.length,
+ };
+
+ const entries = (grip.preview.entries = []);
+
+ for (let i = 0; i < OBJECT_PREVIEW_MAX_ITEMS && i < rawObj.length; i++) {
+ const prop = rawObj[i];
+ const value = rawObj.getPropertyValue(prop);
+ entries.push([prop, hooks.createValueGrip(value)]);
+ }
+
+ return true;
+ },
+
+ function DOMNode({ obj, hooks }, grip, rawObj) {
+ if (
+ isWorker ||
+ obj.class == "Object" ||
+ !rawObj ||
+ !Node.isInstance(rawObj)
+ ) {
+ return false;
+ }
+
+ const preview = (grip.preview = {
+ kind: "DOMNode",
+ nodeType: rawObj.nodeType,
+ nodeName: rawObj.nodeName,
+ isConnected: rawObj.isConnected === true,
+ });
+
+ if (rawObj.nodeType == rawObj.DOCUMENT_NODE && rawObj.location) {
+ preview.location = hooks.createValueGrip(rawObj.location.href);
+ } else if (obj.class == "DocumentFragment") {
+ preview.childNodesLength = rawObj.childNodes.length;
+
+ if (hooks.getGripDepth() < 2) {
+ preview.childNodes = [];
+ for (const node of rawObj.childNodes) {
+ const actor = hooks.createValueGrip(obj.makeDebuggeeValue(node));
+ preview.childNodes.push(actor);
+ if (preview.childNodes.length == OBJECT_PREVIEW_MAX_ITEMS) {
+ break;
+ }
+ }
+ }
+ } else if (Element.isInstance(rawObj)) {
+ // For HTML elements (in an HTML document, at least), the nodeName is an
+ // uppercased version of the actual element name. Check for HTML
+ // elements, that is elements in the HTML namespace, and lowercase the
+ // nodeName in that case.
+ if (rawObj.namespaceURI == "http://www.w3.org/1999/xhtml") {
+ preview.nodeName = preview.nodeName.toLowerCase();
+ }
+
+ // Add preview for DOM element attributes.
+ preview.attributes = {};
+ preview.attributesLength = rawObj.attributes.length;
+ for (const attr of rawObj.attributes) {
+ preview.attributes[attr.nodeName] = hooks.createValueGrip(attr.value);
+ }
+ } else if (obj.class == "Attr") {
+ preview.value = hooks.createValueGrip(rawObj.value);
+ } else if (
+ obj.class == "Text" ||
+ obj.class == "CDATASection" ||
+ obj.class == "Comment"
+ ) {
+ preview.textContent = hooks.createValueGrip(rawObj.textContent);
+ }
+
+ return true;
+ },
+
+ function DOMEvent({ obj, hooks }, grip, rawObj) {
+ if (isWorker || !rawObj || !Event.isInstance(rawObj)) {
+ return false;
+ }
+
+ const preview = (grip.preview = {
+ kind: "DOMEvent",
+ type: rawObj.type,
+ properties: Object.create(null),
+ });
+
+ if (hooks.getGripDepth() < 2) {
+ const target = obj.makeDebuggeeValue(rawObj.target);
+ preview.target = hooks.createValueGrip(target);
+ }
+
+ if (obj.class == "KeyboardEvent") {
+ preview.eventKind = "key";
+ preview.modifiers = ObjectUtils.getModifiersForEvent(rawObj);
+ }
+
+ const props = ObjectUtils.getPropsForEvent(obj.class);
+
+ // Add event-specific properties.
+ for (const prop of props) {
+ let value = rawObj[prop];
+ if (ObjectUtils.isObjectOrFunction(value)) {
+ // Skip properties pointing to objects.
+ if (hooks.getGripDepth() > 1) {
+ continue;
+ }
+ value = obj.makeDebuggeeValue(value);
+ }
+ preview.properties[prop] = hooks.createValueGrip(value);
+ }
+
+ // Add any properties we find on the event object.
+ if (!props.length) {
+ let i = 0;
+ for (const prop in rawObj) {
+ let value = rawObj[prop];
+ if (
+ prop == "target" ||
+ prop == "type" ||
+ value === null ||
+ typeof value == "function"
+ ) {
+ continue;
+ }
+ if (value && typeof value == "object") {
+ if (hooks.getGripDepth() > 1) {
+ continue;
+ }
+ value = obj.makeDebuggeeValue(value);
+ }
+ preview.properties[prop] = hooks.createValueGrip(value);
+ if (++i == OBJECT_PREVIEW_MAX_ITEMS) {
+ break;
+ }
+ }
+ }
+
+ return true;
+ },
+
+ function DOMException({ obj, hooks }, grip, rawObj) {
+ if (isWorker || !rawObj || obj.class !== "DOMException") {
+ return false;
+ }
+
+ grip.preview = {
+ kind: "DOMException",
+ name: hooks.createValueGrip(rawObj.name),
+ message: hooks.createValueGrip(rawObj.message),
+ code: hooks.createValueGrip(rawObj.code),
+ result: hooks.createValueGrip(rawObj.result),
+ filename: hooks.createValueGrip(rawObj.filename),
+ lineNumber: hooks.createValueGrip(rawObj.lineNumber),
+ columnNumber: hooks.createValueGrip(rawObj.columnNumber),
+ };
+
+ return true;
+ },
+
+ function Object(objectActor, grip, rawObj) {
+ return GenericObject(
+ objectActor,
+ grip,
+ rawObj,
+ /* specialStringBehavior = */ false
+ );
+ },
+];
+
+module.exports = previewers;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-02 09:45:02 +0000