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Survey of data removal methods on the Web and WebExtensions platforms.

Raw

This information was retrieved and collated on 2026-08-26.

Columns

Affects

The Affects column refers to how many records can be removed by a given removal method. This provides a high-level way to scope

one - The removal method can only remove one record in a call.
multiple - The removal method can remove one or more records in a call. If the method can also be used to remove a single record, it is still classified as "multiple".

Targeting

The Targeting column refers to how items that are removed are selected. Possible values are:

collection - All of the items in the collection are removed.
explicit - The removed item(s) are directly referenced by either the object on which the method was called or by properties passed into the method (e.g. a unique ID).
matching - The removed item(s) are evaluated at runtime based on the provided inputs. Conditions may include matching a pattern or set of conditions.
contextual - The removed item(s) are derived from on the object hierarchy and operation being performed.

Examples

`

Raw

	Type	Method	Return type	(a)sync	Affects	Targeting	URL	Notes
	web	delete Element.dataset.KEYNAME	true	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/dataset#setting_values	See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/delete for notes on the delete operator.
	web	Cache.delete(request, options?)	Promise<Boolean>	async	one	explicit,matching	https://developer.mozilla.org/en-US/docs/Web/API/Cache/delete	Resolves to `true` if the cache entry is deleted, or `false` otherwise.
	web	CacheStorage.delete(cacheName)	Promise<Boolean>	async	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/CacheStorage/delete	Resolves to `true` if the Cache object is found and deleted, and `false` otherwise.
	web	CharacterData.remove()	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/CharacterData/remove
	web	clearInterval(id)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/Window/clearInterval
	web	clearTimeout(id)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/Window/clearTimeout
	web	Console.clear(id)	undefined	sync	multiple	collection	https://developer.mozilla.org/en-US/docs/Web/API/console/clear_static
	web	CookieStore.delete(name\|options)	Promise<undefined>	async	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/CookieStore/delete
	web	CrashReportContext.delete(key)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/CrashReportContext/delete
	web	CSSFontFeatureValuesMap.clear()	undefined	sync	multiple	collection	https://developer.mozilla.org/en-US/docs/Web/API/CSSFontFeatureValuesMap/clear
	web	CSSFontFeatureValuesMap.delete(property)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/CSSFontFeatureValuesMap/delete
	web	CSSGroupingRule.deleteRule(index)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/CSSGroupingRule/deleteRule
	web	CustomStateSet.clear()	undefined	sync	multiple	collection	https://developer.mozilla.org/en-US/docs/Web/API/CustomStateSet/clear
	web	CustomStateSet.delete(value)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/CustomStateSet/delete
	web	DataTransfer.clearData()	undefined	sync	multiple	collection	https://developer.mozilla.org/en-US/docs/Web/API/DataTransfer/clearData
	web	DocumentType.remove()	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/DocumentType/remove	Single because there is only one doc type per document.
	web	DOMTokenList.remove(token1, ..., tokenN)	undefined	sync	multiple	explicit	https://developer.mozilla.org/en-US/docs/Web/API/DOMTokenList/remove
	web	Element.remove()	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/Element/remove	Removes an element from its parent.
	web	Element.removeAttribute(name)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/Element/removeAttribute
	web	Element.removeAttributeNode(attributeNode)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/Element/removeAttributeNode
	web	FileSystemHandle.remove(options?)	Promise<undefined>	async	multiple	explicit,matching	https://developer.mozilla.org/en-US/docs/Web/API/FileSystemHandle/remove	Removes the handle. If `options.recursive` is `true` and `FileSystemHandle` is a directory, also removes descendants.
	web	FontFaceSet.clear()	undefined	sync	multiple	collection	https://developer.mozilla.org/en-US/docs/Web/API/FontFaceSet/clear
	web	FontFaceSet.delete(font)	Boolean	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/FontFaceSet/delete	Return value is is true if the deletion was successful and false otherwise.
	web	FormData.delete(name)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/FormData/delete
	web	Geolocation.clearWatch(id)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/Geolocation/clearWatch
	web	GPUCommandEncoder.clearBuffer(buffer, offset?, size?)	undefined	sync	multiple	explicit	https://developer.mozilla.org/en-US/docs/Web/API/GPUCommandEncoder/clearBuffer
	web	Headers.delete(name)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/Headers/delete
	web	Highlight.clear()	undefined	sync	multiple	collection	https://developer.mozilla.org/en-US/docs/Web/API/Highlight/clear
	web	Highlight.delete(range)	undefined	sync	multiple	explicit	https://developer.mozilla.org/en-US/docs/Web/API/Highlight/delete
	web	HighlightRegistry.clear()	undefined	sync	multiple	collection	https://developer.mozilla.org/en-US/docs/Web/API/HighlightRegistry/clear
	web	HighlightRegistry.delete(customHighlightName)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/HighlightRegistry/delete
	web	HTMLOptionsCollection.remove(index)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/HTMLOptionsCollection/remove
	web	HTMLSelectElement.remove(index)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/HTMLSelectElement/remove
	web	HTMLTableElement.deleteCaption()	undefined	sync	one	contextual	https://developer.mozilla.org/en-US/docs/Web/API/HTMLTableElement/deleteCaption	Flagged as contextual because the set of elements and nodes that are removed is derived from the object this method is called on.
	web	HTMLTableElement.deleteRow(index)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/HTMLTableElement/deleteRow
	web	HTMLTableElement.deleteTFoot()	undefined	sync	one	contextual	https://developer.mozilla.org/en-US/docs/Web/API/HTMLTableElement/deleteTFoot	Flagged as contextual because the set of elements and nodes that are removed is derived from the object this method is called on.
	web	HTMLTableElement.deleteTHead()	undefined	sync	one	contextual	https://developer.mozilla.org/en-US/docs/Web/API/HTMLTableElement/deleteTHead	Flagged as contextual because the set of elements and nodes that are removed is derived from the object this method is called on.
	web	HTMLTableRowElement.deleteCell(index)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/HTMLTableRowElement/deleteCell
	web	HTMLTableSectionElement.deleteRow(index)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/HTMLTableSectionElement/deleteRow
	web	IDBCursor.delete()	IDBRequest	async	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/IDBCursor/delete	Returns an `IDBRequest` instance; if successful, the `result` property will be `undefined`.
	web	IDBDatabase.deleteObjectStore(name)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/IDBDatabase/deleteObjectStore	This method can be called only within a versionchange transaction.
	web	IDBFactory.deleteDatabase(name, options?)	IDBOpenDBRequest	async	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/IDBFactory/deleteDatabase
	web	IDBObjectStore.clear()	IDBRequest	async	multiple	collection	https://developer.mozilla.org/en-US/docs/Web/API/IDBObjectStore/clear	Returns an `IDBRequest` instance; if successful, the `result` property will be `undefined`.
	web	IDBObjectStore.delete(key)	IDBRequest	async	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/IDBObjectStore/delete	Returns an `IDBRequest` instance; if successful, the `result` property will be `undefined`.
	web	IDBObjectStore.deleteIndex(indexName)	IDBRequest	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/IDBObjectStore/deleteIndex	Must be called only from a VersionChange transaction mode callback.
	web	Map.clear()	undefined	sync	multiple	collection	https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/clear
	web	Map.delete(key)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/delete
	web	MediaStream.removeTrack(track)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/removeTrack
	web	Navigator.clearAppBadge()	Promise<undefined>	async	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/Navigator/clearAppBadge
	web	Node.removeChild(child)	Node	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/Node/removeChild	Removes single Node from the parent and returns it.
	web	Permissions.revoke(permissionDescriptor)	Promise<PermissionStatus>	async	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/Permissions/query	Deprecated.
	web	Performance.clearMarks()	undefined	sync	multiple	collection	https://developer.mozilla.org/en-US/docs/Web/API/Performance/clearMarks
	web	Performance.clearMeasures()	undefined	sync	multiple	collection	https://developer.mozilla.org/en-US/docs/Web/API/Performance/clearMeasures
	web	Performance.clearResourceTimings()	undefined	sync	multiple	collection	https://developer.mozilla.org/en-US/docs/Web/API/Performance/clearResourceTimings
	web	Range.deleteContents()	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/Range/deleteContents
	web	Range.extractContents()	DocumentFragment	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/Range/extractContents	Similar to deleteContents, but returns the removed contents and (for partial selections) a clone of ancestor nodes.
	web	Sanitizer.removeAttribute(attribute)	Boolean	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/Sanitizer/removeAttribute	true if the operation changed the configuration to disallow the attribute, and false if the attribute was already disallowed.
	web	Sanitizer.removeElement(element)	Boolean	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/Sanitizer/removeElement	true if the operation changed the configuration to disallow the element, and false if the element was already disallowed.
	web	Sanitizer.removeUnsafe()	Boolean	sync	multiple	collection	https://developer.mozilla.org/en-US/docs/Web/API/Sanitizer/removeUnsafe
	web	Selection.deleteFromDocument()	undefined	sync	one	contextual	https://developer.mozilla.org/en-US/docs/Web/API/Selection/deleteFromDocument	Flagged as contextual because the set of elements and nodes that are removed is derived from the object this method is called on.
	web	Selection.removeAllRanges()	undefined	sync	multiple	collection	https://developer.mozilla.org/en-US/docs/Web/API/Selection/removeAllRanges
	web	Selection.removeRange(range)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/Selection/removeRange
	web	Set.clear()	undefined	sync	multiple	collection	https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set/clear
	web	Set.delete()	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set/delete
	web	SourceBuffer.remove(start, end)	undefined	sync	multiple	matching	https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/remove	Affects multiple media segments in a SourceBuffer. Affected segments must match the provided time ranges.
	web	Storage.clear()	undefined	sync	multiple	collection	https://developer.mozilla.org/en-US/docs/Web/API/Storage/clear
	web	Storage.removeItem()	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/Storage/removeItem
	web	StylePropertyMap.clear()	undefined	sync	multiple	collection	https://developer.mozilla.org/en-US/docs/Web/API/StylePropertyMap/clear
	web	StylePropertyMap.delete(property)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/StylePropertyMap/delete
	web	SVGLengthList.clear()	undefined	sync	multiple	collection	https://developer.mozilla.org/en-US/docs/Web/API/SVGLengthList/clear
	web	SVGLengthList.removeItem(index)	SVGLength	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/SVGLengthList/removeItem	Returns the `SVGLength` that was removed from the list.
	web	SVGLengthList.replaceItem(newItem, index)	SVGLength	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/SVGLengthList/replaceItem	Returns the `SVGLength` that was added the list.
	web	SVGNumberList.clear()	undefined	sync	multiple	collection	https://developer.mozilla.org/en-US/docs/Web/API/SVGNumberList/clear
	web	SVGNumberList.removeItem(index)	SVGNumber	sync.	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/SVGNumberList/removeItem	Returns the `SVGNumber` that was removed from the list.
	web	SVGNumberList.replaceItem(newItem, index)	SVGNumber	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/SVGNumberList/replaceItem	Returns the `SVGNumber` that was added the list.
	web	SVGPointList.clear()	undefined	sync	multiple	collection	https://developer.mozilla.org/en-US/docs/Web/API/SVGPointList/clear
	web	SVGPointList.removeItem(index)	DOMPoint	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/SVGPointList/removeItem	Returns the `DOMPoint` that was removed from the list.
	web	SVGPointList.replaceItem(obj, index)	DOMPoint	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/SVGPointList/replaceItem	Returns the `DOMPoint` that was added the list.
	web	SVGStringList.clear()	undefined	sync	multiple	collection	https://developer.mozilla.org/en-US/docs/Web/API/SVGStringList/clear
	web	SVGStringList.removeItem(index)	String	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/SVGStringList/removeItem	Returns the `String` that was removed from the list.
	web	SVGStringList.replaceItem(newItem, index)	String	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/SVGStringList/replaceItem	Returns the `String` that was added the list.
	web	SVGTransformList.clear()	undefined	sync	multiple	collection	https://developer.mozilla.org/en-US/docs/Web/API/SVGTransformList/clear
	web	SVGTransformList.removeItem(index)	SVGTransform	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/SVGTransformList/removeItem	Returns the `SVGTransform` that was removed from the list.
	web	SVGTransformList.replaceItem(newItem, index)	SVGTransform	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/SVGTransformList/replaceItem	Returns the `SVGTransform` that was added the list.
	web	URLSearchParams.delete(name, value?)	undefined	sync	one	explicit,matching	https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams/delete
	web	WebGLRenderingContext.deleteBuffer(buffer)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/deleteBuffer
	web	WebGLRenderingContext.deleteFramebuffer(framebuffer)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/deleteFramebuffer
	web	WebGLRenderingContext.deleteProgram(program)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/deleteProgram
	web	WebGLRenderingContext.deleteRenderbuffer(renderbuffer)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/deleteRenderbuffer
	web	WebGLRenderingContext.deleteShader(shader)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/deleteShader
	web	WebGLRenderingContext.deleteTexture(texture)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/deleteTexture
	web	WebGLRenderingContext.clear(mask)	undefined	sync	multiple	collection,matching	https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/clear	The `mask` parameter specifies which buffers to clear.
	web	WebGL2RenderingContext.deleteQuery(query)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/WebGL2RenderingContext/deleteQuery
	web	WebGL2RenderingContext.deleteSampler(sampler)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/WebGL2RenderingContext/deleteSampler
	web	WebGL2RenderingContext.deleteSync(sync)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/WebGL2RenderingContext/deleteSync
	web	WebGL2RenderingContext.deleteTransformFeedback(transformFeedback)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/WebGL2RenderingContext/deleteTransformFeedback
	web	WebGL2RenderingContext.deleteVertexArray(vertexArray)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/WebGL2RenderingContext/deleteVertexArray
	web	XRAnchor.delete()	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/XRAnchor/delete
	web	XRCompositionLayer.destroy()	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/XRCompositionLayer/destroy
	web	XSLTProcessor.clearParameters()	undefined	sync	multiple	collection	https://developer.mozilla.org/en-US/docs/Web/API/XSLTProcessor/clearParameters
	web	XSLTProcessor.removeParameter(namespaceURI, name)	undefined	sync	one	explicit	https://developer.mozilla.org/en-US/docs/Web/API/XSLTProcessor/removeParameter
	ext	alarms.clear(name)	Promise<Boolean>	async	one	explicit	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/alarms/clear	Resolves to `true` if the alarm was cleared, otherwise `false`.
	ext	alarms.clearAll()	Promise<Boolean>	async	multiple	collection	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/alarms/clearAll	Resolves to `true` if any alarms were cleared, otherwise `false`. Chromium always resolves to `true`.
	ext	bookmarks.remove(id)	Promise<undefined>	async	one	explicit	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/bookmarks/remove
	ext	bookmarks.removeTree(id)	Promise<undefined>	async	multiple	matching	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/bookmarks/removeTree	Caller specifies a folder to remove, multiple children may be matched.
	ext	browsingData.remove(options, dataTypes)	Promise<undefined>	async	multiple	matching	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/browsingData/remove
	ext	browsingData.removeCache(browsingData.RemovalOptions)	Promise<undefined>	async	multiple	collection	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/browsingData/removeCache	Flagged as 'collection' rather than 'matching' because removalOptions is required but ignored.
	ext	browsingData.removeCookies(browsingData.RemovalOptions)	Promise<undefined>	async	multiple	matching	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/browsingData/RemovalOptions
	ext	browsingData.removeDownloads(browsingData.RemovalOptions)	Promise<undefined>	async	multiple	matching	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/browsingData/removeDownloads
	ext	browsingData.removeFormData(browsingData.RemovalOptions)	Promise<undefined>	async	multiple	matching	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/browsingData/removeFormData
	ext	browsingData.removeHistory(browsingData.RemovalOptions)	Promise<undefined>	async	multiple	matching	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/browsingData/removeHistory
	ext	browsingData.removeLocalStorage(browsingData.RemovalOptions)	Promise<undefined>	async	multiple	matching	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/browsingData/removeLocalStorage
	ext	browsingData.removePasswords(browsingData.RemovalOptions)	Promise<undefined>	async	multiple	matching	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/browsingData/removePasswords
	ext	browsingData.removePluginData(browsingData.RemovalOptions)	Promise<undefined>	async	multiple	matching	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/browsingData/removePluginData
	ext	BrowserSetting.clear(details)	Promise<Boolean>	async	one	explicit	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/types/BrowserSetting/clear	Resolves to `true` if the setting was cleared, `false` otherwise. NOTE: Uses the name ChromeSettings in Chromium.
	ext	contextMenus.remove(menuItemId)	Promise<undefined>	async	one	explicit	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/contextMenus/remove	Removes a single menu item by ID.
	ext	contextMenus.removeAll()	Promise<undefined>	async	multiple	collection	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/menus/removeAll
	ext	contextualIdentities.remove(cookieStoreId)	Promise<ContextualIdentity>	async	one	explicit	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/contextualIdentities/remove
	ext	cookies.remove(details)	Promise<Cookie\|null>	async	one	explicit	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/cookies/remove
	ext	downloads.erase(downloads.DownloadQuery)	Promise<Number[]>	async	multiple	matching	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/downloads/erase	The resolved array contains the IDs of the removed downloads.DownloadItem objects.
	ext	downloads.removeFile(id)	Promise<undefined>	async	one	explicit	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/downloads/removeFile
	ext	events.Event.removeListener(function)	Promise<undefined>	async	one	explicit	https://developer.chrome.com/docs/extensions/reference/api/events#method-Event-removeListener
	ext	events.Event.removeRules(ruleIds?)	Promise<undefined>	async	multiple	explicit,collection	https://developer.chrome.com/docs/extensions/reference/api/events#method-Event-removeRules	If `ruleIds` are specified, only matches the specified IDs, otherwise matches all.
	ext	find.removeHighlighting()	Promise<undefined>	async	multiple	collection	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/find/removeHighlighting
	ext	history.deleteAll()	Promise<undefined>	async	multiple	collection	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/history/deleteAll
	ext	history.deleteRange(range)	Promise<undefined>	async	multiple	matching	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/history/deleteRange
	ext	history.deleteUrl(details)	Promise<undefined>	async	one	explicit	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/history/deleteUrl	NOTE: Didn't check if URLs can use match patterns.
	ext	notifications.clear(id)	Promise<Boolean>	async	one	explicit	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/notifications/clear	Resolves to `true` if the notification was cleared, otherwise `false`.
	ext	permissions.remove(permissions.Permissions)	Promise<Boolean>	async	multiple	explicit	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/permissions/remove
	ext	scripting.removeCSS(details)	Promise<undefined>	async	multiple	matching	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/scripting/removeCSS	Removes all matching CSS added with `insertCSS()`.
	ext	sessions.removeTabValue(tabId, key)	Promise<undefined>	async	one	explicit	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/sessions/removeTabValue
	ext	sessions.removeWindowValue(windowId, key)	Promise<undefined>	async	one	explicit	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/sessions/removeWindowValue
	ext	StorageArea.clear()	Promise<undefined>	async	multiple	collection	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/storage/StorageArea/clear
	ext	StorageArea.remove(keys)	Promise<undefined>	async	multiple	explicit	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/storage/StorageArea/remove
	ext	tabs.remove(tabIds)	Promise<undefined>	async	multiple	explicit	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/tabs/remove
	ext	tabs.removeCSS(tabId, details)	Promise<undefined>	async	multiple	matching	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/scripting/removeCSS	Removes all matching CSS added with `insertCSS()`.
	ext	tabs.ungroup(tabIds)	Promise<undefined>	async	multiple	matching	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/tabs/ungroup	Removed groups are derived from the group membership of the specified tab IDs.
	ext	windows.remove(id)	Promise<undefined>	async	one	explicit	https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/tabs/remove

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