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xast-util-is-element

Port of hast-util-is-element for xast

Contents

• xast-util-is-element
  • Contents
  • What is this?
  • When should I use this?
  • Install
  • Use
  • API
  • Syntax tree
  • Types
  • Compatibility
  • Security
  • Related
  • Contribute
  • License

What is this?

When should I use this?

Install

This package is ESM only. In Node.js (version 12.20+, 14.14+, 16.0+, 18.0+), install as

pnpm add xast-util-is-element
# or with yarn
# yarn add xast-util-is-element
# or with npm
# npm install xast-util-is-element

Use

API

---

convertElement()

Signature

convertElement<T>(test: T["name"] | TestFunctionPredicate<T>): AssertPredicate<T>;

Type parameters

• T extends Element<T>

Parameters

Name	Type
test	T["name"]

Returns

AssertPredicate<T>

Defined in: lib/xast-util-is-element.ts:174

Signature

convertElement(test?: Test): AssertAnything;

Parameters

Name	Type
test?	Test

Returns

AssertAnything

Defined in: lib/xast-util-is-element.ts:177

---

isElement()

Signature

isElement(): false;

Returns

false

Defined in: lib/xast-util-is-element.ts:123

Signature

isElement<T>(
  node: unknown, 
  test?: PredicateTest<T>, 
  index?: number, 
  parent?: Parent<Node<Data>, Data>, 
  context?: unknown): node is T;

Type parameters

• T extends Element<T> = Element

Parameters

Name	Type
node	unknown
test?	PredicateTest<T>
index?	number
parent?	Parent<Node<Data>, Data>
context?	unknown

Returns

node is T

Defined in: lib/xast-util-is-element.ts:124

Signature

isElement(
  node: unknown, 
  test: Test, 
  index?: number, 
  parent?: Parent<Node<Data>, Data>, 
  context?: unknown): boolean;

Parameters

Name	Type
node	unknown
test	Test
index?	number
parent?	Parent<Node<Data>, Data>
context?	unknown

Returns

boolean

Defined in: lib/xast-util-is-element.ts:131

---

AssertAnything

Function

Type declaration

Check if a node is an element and passes a certain node test

Signature

(node?: unknown, index?: number | null, parent?: Parent | null): boolean;

Parameters

Name	Type
node?	unknown
index?	number
parent?	Parent

Returns

boolean

Defined in: lib/xast-util-is-element.ts:40

---

AssertPredicate

<Y> Function

Type parameters

• Y extends Element

Type declaration

Check if a node is an element and passes a certain node test

Signature

(node?: unknown, index?: number | null, parent?: Parent | null): node is Y;

Parameters

Name	Type
node?	unknown
index?	number
parent?	Parent

Returns

node is Y

Defined in: lib/xast-util-is-element.ts:50

---

Name

string

Defined in: lib/xast-util-is-element.ts:4

---

PredicateTest

<T> null | undefined | T["name"] | TestFunctionPredicate<T> | (T["name"] | TestFunctionPredicate<T>)[]

Type parameters

• T extends Element

Defined in: lib/xast-util-is-element.ts:12

---

Test

null | undefined | Name | TestFunctionAnything | (Name | TestFunctionAnything)[]

Defined in: lib/xast-util-is-element.ts:5

---

TestFunctionAnything

Function

Type declaration

Check if an element passes a test

Signature

(element: Element, index?: number | null, parent?: Parent | null): boolean | void;

Parameters

Name	Type
element	Element
index?	number
parent?	Parent

Returns

boolean | void

Defined in: lib/xast-util-is-element.ts:22

---

TestFunctionPredicate

<X> Function

Type parameters

• X extends Element

Type declaration

Check if an element passes a certain node test

Signature

(element: Element, index?: number | null, parent?: Parent | null): element is X;

Parameters

Name	Type
element	Element
index?	number
parent?	Parent

Returns

element is X

Defined in: lib/xast-util-is-element.ts:31

Syntax tree

Types

Compatibility

Security

Related

Contribute

License

MIT © Thomas F. K. Jorna