Remove more unnecessary polyfills from webapi for Node 16 (#5814)

* feat(webapi): Remove unnecessary polyfills now that we dropped support for Node 14

* feat(webapi): Removed more unnecessary polyfills for Node 16

* chore: changeset
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20 changed files with 23 additions and 422 deletions

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@ -0,0 +1,5 @@
---
'@astrojs/webapi': major
---
Moved target to Node 16. Removed polyfills for AbortController, AbortSignal, atob, btoa, Object.hasOwn, Promise.all, Array.at and String.replaceAll

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@ -24,10 +24,6 @@ THE SOFTWARE.
Code from [@astrocommunity/webapi](https://www.npmjs.com/@astrocommunity/webapi) is licensed under the CC0-1.0 License.
Code from [abort-controller](https://www.npmjs.com/package/abort-controller) is licensed under the MIT License (MIT), Copyright Toru Nagashima.
Code from [event-target-shim](https://www.npmjs.com/package/event-target-shim) is licensed under the MIT License (MIT), Copyright Toru Nagashima.
Code from [fetch-blob](https://www.npmjs.com/package/fetch-blob) is licensed under the MIT License (MIT), Copyright Jimmy Wärting.
Code from [formdata-polyfill](https://www.npmjs.com/package/formdata-polyfill) is licensed under the MIT License (MIT), Copyright Jimmy Wärting.

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@ -1,6 +1,6 @@
# WebAPI
**WebAPI** lets you use Web APIs in Node v12, v14, and v16.
**WebAPI** lets you use Web APIs not present in Node v16 and later.
```sh
npm install @astrojs/webapi
@ -23,9 +23,6 @@ These APIs are combined from popular open source projects and configured to shar
## Features
- [AbortController](https://developer.mozilla.org/en-US/docs/Web/API/AbortController)
- [AbortSignal](https://developer.mozilla.org/en-US/docs/Web/API/AbortSignal)
- [Blob](https://developer.mozilla.org/en-US/docs/Web/API/Blob)
- [ByteLengthQueuingStrategy](https://developer.mozilla.org/en-US/docs/Web/API/ByteLengthQueuingStrategy)
- [CanvasRenderingContext2D](https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D)
- [CSSStyleSheet](https://developer.mozilla.org/en-US/docs/Web/API/CSSStyleSheet)
@ -78,9 +75,7 @@ These APIs are combined from popular open source projects and configured to shar
- [WritableStreamDefaultController](https://developer.mozilla.org/en-US/docs/Web/API/WritableStreamDefaultController)
- [WritableStreamDefaultWriter](https://developer.mozilla.org/en-US/docs/Web/API/WritableStreamDefaultWriter)
- [Window](https://developer.mozilla.org/en-US/docs/Web/API/Window)
- [atob](https://developer.mozilla.org/en-US/docs/Web/API/atob)
- [btoa](https://developer.mozilla.org/en-US/docs/Web/API/btoa)
- [cancelAnimationFrame](https://developer.mozilla.org/en-US/docs/Web/API/cancelAnimationFrame)
- [cancelAnimationFrame](https://developer.mozilla.org/en-US/docs/Web/API/Window/cancelAnimationFrame)
- [cancelIdleCallback](https://developer.mozilla.org/en-US/docs/Web/API/cancelIdleCallback)
- [clearTimeout](https://developer.mozilla.org/en-US/docs/Web/API/clearTimeout)
- [fetch](https://developer.mozilla.org/en-US/docs/Web/API/fetch)
@ -89,12 +84,6 @@ These APIs are combined from popular open source projects and configured to shar
- [requestIdleCallback](https://developer.mozilla.org/en-US/docs/Web/API/requestIdleCallback)
- [setTimeout](https://developer.mozilla.org/en-US/docs/Web/API/setTimeout)
- [structuredClone](https://developer.mozilla.org/en-US/docs/Web/API/structuredClone)
- [Object.hasOwn](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwn)
- [Promise.any](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/any)
- [Array.prototype.at](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/at)
- [String.prototype.at](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/at)
- [String.prototype.replaceAll](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/replaceAll)
- [TypedArray.prototype.at](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray/at)
- [URLPattern](https://developer.mozilla.org/en-US/docs/Web/API/URLPattern)
## Usage
@ -102,7 +91,7 @@ These APIs are combined from popular open source projects and configured to shar
You can use WebAPIs as individual exports.
```js
import { AbortController, Blob, Event, EventTarget, File, fetch, Response } from '@astrojs/webapi'
import { Event, EventTarget, File, fetch, Response } from '@astrojs/webapi'
```
You can apply WebAPIs to an object, like `globalThis`.
@ -149,11 +138,10 @@ polyfill(globalThis, {
| Shorthand | Excludes |
|:-------------- |:-------- |
| `Blob+` | `Blob`, `File` |
| `Document+` | `Document`, `HTMLDocument` |
| `Element+` | `Element`, and exclusions from `HTMLElement+` |
| `Event+` | `Event`, `CustomEvent`, `EventTarget`, `AbortSignal`, `MediaQueryList`, `Window`, and exclusions from `Node+` |
| `EventTarget+` | `Event`, `CustomEvent`, `EventTarget`, `AbortSignal`, `MediaQueryList`, `Window`, and exclusions from `Node+` |
| `Event+` | `Event`, `CustomEvent`, `EventTarget`, `MediaQueryList`, `Window`, and exclusions from `Node+` |
| `EventTarget+` | `Event`, `CustomEvent`, `EventTarget`, `MediaQueryList`, `Window`, and exclusions from `Node+` |
| `HTMLElement+` | `CustomElementsRegistry`, `HTMLElement`, `HTMLBodyElement`, `HTMLCanvasElement`, `HTMLDivElement`, `HTMLHeadElement`, `HTMLHtmlElement`, `HTMLImageElement`, `HTMLStyleElement`, `HTMLTemplateElement`, `HTMLUnknownElement`, `Image` |
| `Node+` | `Node`, `DocumentFragment`, `ShadowRoot`, `Document`, `HTMLDocument`, and exclusions from `Element+` |
| `StyleSheet+` | `StyleSheet`, `CSSStyleSheet` |
@ -166,10 +154,6 @@ polyfill(globalThis, {
Thank you to Jon Neal for his work on the original [webapi](https://github.com/astro-community/webapi) project that this package is forked from. Licensed under the CC0-1.0 License.
Code from [abort-controller](https://www.npmjs.com/package/abort-controller) is licensed under the MIT License (MIT), Copyright Toru Nagashima.
Code from [event-target-shim](https://www.npmjs.com/package/event-target-shim) is licensed under the MIT License (MIT), Copyright Toru Nagashima.
Code from [fetch-blob](https://www.npmjs.com/package/fetch-blob) is licensed under the MIT License (MIT), Copyright Jimmy Wärting.
Code from [formdata-polyfill](https://www.npmjs.com/package/formdata-polyfill) is licensed under the MIT License (MIT), Copyright Jimmy Wärting.

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@ -1,6 +1,6 @@
// organize-imports-ignore
export { pathToPosix } from './lib/utils';
export { AbortController, AbortSignal, alert, atob, Blob, btoa, ByteLengthQueuingStrategy, cancelAnimationFrame, cancelIdleCallback, CanvasRenderingContext2D, CharacterData, clearTimeout, Comment, CountQueuingStrategy, CSSStyleSheet, CustomElementRegistry, CustomEvent, Document, DocumentFragment, DOMException, Element, Event, EventTarget, fetch, File, FormData, Headers, HTMLBodyElement, HTMLCanvasElement, HTMLDivElement, HTMLDocument, HTMLElement, HTMLHeadElement, HTMLHtmlElement, HTMLImageElement, HTMLSpanElement, HTMLStyleElement, HTMLTemplateElement, HTMLUnknownElement, Image, ImageData, IntersectionObserver, MediaQueryList, MutationObserver, Node, NodeFilter, NodeIterator, OffscreenCanvas, ReadableByteStreamController, ReadableStream, ReadableStreamBYOBReader, ReadableStreamBYOBRequest, ReadableStreamDefaultController, ReadableStreamDefaultReader, Request, requestAnimationFrame, requestIdleCallback, ResizeObserver, Response, setTimeout, ShadowRoot, structuredClone, StyleSheet, Text, TransformStream, TreeWalker, URLPattern, Window, WritableStream, WritableStreamDefaultController, WritableStreamDefaultWriter, } from './mod.js';
export { alert, ByteLengthQueuingStrategy, cancelAnimationFrame, cancelIdleCallback, CanvasRenderingContext2D, CharacterData, clearTimeout, Comment, CountQueuingStrategy, CSSStyleSheet, CustomElementRegistry, CustomEvent, Document, DocumentFragment, DOMException, Element, Event, EventTarget, fetch, File, FormData, Headers, HTMLBodyElement, HTMLCanvasElement, HTMLDivElement, HTMLDocument, HTMLElement, HTMLHeadElement, HTMLHtmlElement, HTMLImageElement, HTMLSpanElement, HTMLStyleElement, HTMLTemplateElement, HTMLUnknownElement, Image, ImageData, IntersectionObserver, MediaQueryList, MutationObserver, Node, NodeFilter, NodeIterator, OffscreenCanvas, ReadableByteStreamController, ReadableStream, ReadableStreamBYOBReader, ReadableStreamBYOBRequest, ReadableStreamDefaultController, ReadableStreamDefaultReader, Request, requestAnimationFrame, requestIdleCallback, ResizeObserver, Response, setTimeout, ShadowRoot, structuredClone, StyleSheet, Text, TransformStream, TreeWalker, URLPattern, Window, WritableStream, WritableStreamDefaultController, WritableStreamDefaultWriter, } from './mod.js';
export declare const polyfill: {
(target: any, options?: PolyfillOptions): any;
internals(target: any, name: string): any;

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@ -50,7 +50,6 @@
"bugs": "https://github.com/withastro/astro/issues",
"homepage": "https://github.com/withastro/astro/tree/main/packages/webapi#readme",
"dependencies": {
"global-agent": "^3.0.0",
"undici": "^5.14.0"
},
"devDependencies": {
@ -59,19 +58,15 @@
"@rollup/plugin-node-resolve": "^13.3.0",
"@rollup/plugin-typescript": "^8.3.2",
"@types/chai": "^4.3.1",
"@types/global-agent": "^2.1.1",
"@types/mocha": "^9.1.1",
"@types/node": "^14.18.21",
"@ungap/structured-clone": "^0.3.4",
"abort-controller": "^3.0.0",
"chai": "^4.3.6",
"event-target-shim": "^6.0.2",
"fetch-blob": "^3.1.5",
"formdata-polyfill": "^4.0.10",
"magic-string": "^0.25.9",
"mocha": "^9.2.2",
"rollup": "^2.79.1",
"rollup-plugin-terser": "^7.0.2",
"tslib": "^2.4.0",
"typescript": "~4.7.3",
"urlpattern-polyfill": "^1.0.0-rc5"

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@ -58,12 +58,6 @@ const plugins = [
inject({
// import { Promise as P } from 'es6-promise'
// P: [ 'es6-promise', 'Promise' ],
AbortController: [
'abort-controller/dist/abort-controller.mjs',
'AbortController',
],
Blob: ['fetch-blob/from.js', 'Blob'],
DOMException: [pathToDOMException, 'DOMException'],
Document: ['./Document', 'Document'],
Element: ['./Element', 'Element'],
@ -172,7 +166,7 @@ async function build() {
inputOptions: {
input: 'src/polyfill.ts',
plugins: plugins,
external: ['undici', 'global-agent'],
external: ['undici'],
onwarn(warning, warn) {
if (warning.code !== 'UNRESOLVED_IMPORT') warn(warning)
},

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@ -28,7 +28,6 @@ const exclusionsForNode = [
...exclusionsForElement,
] as const
const exclusionsForEventTarget = [
'AbortSignal',
'Event',
'CustomEvent',
'EventTarget',
@ -38,7 +37,6 @@ const exclusionsForEventTarget = [
...exclusionsForNode,
] as const
const exclusionsForEvent = [
'AbortSignal',
'Event',
'CustomEvent',
'EventTarget',
@ -49,7 +47,6 @@ const exclusionsForEvent = [
] as const
export const exclusions = {
'Blob+': ['Blob', 'File'],
'Document+': exclusionsForDocument,
'Element+': exclusionsForElement,
'Event+': exclusionsForEvent,

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@ -5,7 +5,6 @@ export const inheritance = {
Document: 'Node',
DocumentFragment: 'Node',
Element: 'Node',
File: 'Blob',
HTMLDocument: 'Document',
HTMLElement: 'Element',
HTMLBodyElement: 'HTMLElement',

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@ -1,7 +0,0 @@
export function atob(data: string): string {
return Buffer.from(data, 'base64').toString('binary')
}
export function btoa(data: string): string {
return Buffer.from(data, 'binary').toString('base64')
}

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@ -1,57 +0,0 @@
import { Event } from 'event-target-shim'
/** An event fired by a context requester to signal it desires a named context. */
export class ContextEvent<T = unknown> extends Event<'context-request'> {
constructor(init: ContextEventInit<T>) {
super('context-request', { bubbles: true, composed: true })
init = Object(init) as Required<ContextEventInit<T>>
this.context = init.context
}
context!: Context<T>
multiple!: boolean
callback!: ContextCallback<Context<T>>
}
interface ContextEventInit<T = unknown> {
context: Context<T>
multiple?: boolean
callback: ContextCallback<Context<T>>
}
/** A Context object defines an optional initial value for a Context, as well as a name identifier for debugging purposes. */
export type Context<T = unknown> = {
name: string
initialValue?: T
}
/** A helper type which can extract a Context value type from a Context type. */
export type ContextType<T extends Context> = T extends Context<infer Y>
? Y
: never
/** A function which creates a Context value object */
export function createContext<T>(
name: string,
initialValue?: T
): Readonly<Context<T>> {
return {
name,
initialValue,
}
}
/** A callback which is provided by a context requester and is called with the value satisfying the request. */
export type ContextCallback<ValueType> = (
value: ValueType,
dispose?: () => void
) => void
declare global {
interface HTMLElementEventMap {
/** A 'context-request' event can be emitted by any element which desires a context value to be injected by an external provider. */
'context-request': ContextEvent
}
}

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@ -1,21 +0,0 @@
import * as _ from './utils'
export const hasOwn = {
hasOwn(instance: object, property: any) {
return _.__object_hasOwnProperty(instance, property)
},
}.hasOwn
export const initObject = (target: any, exclude: Set<string>) => {
if (exclude.has('Object') || exclude.has('object') || exclude.has('hasOwn'))
return
const Class = target.Object || globalThis.Object
Object.defineProperty(Class, 'hasOwn', {
value: hasOwn,
writable: true,
enumerable: false,
configurable: true,
})
}

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@ -1,28 +0,0 @@
export const any = {
async any<T>(iterable: Iterable<T | PromiseLike<T>>): Promise<T> {
return Promise.all(
[...iterable].map((promise) => {
return new Promise((resolve, reject) =>
Promise.resolve(promise).then(reject, resolve)
)
})
).then(
(errors) => Promise.reject(errors),
(value) => Promise.resolve<T>(value)
)
},
}.any
export const initPromise = (target: any, exclude: Set<string>) => {
if (exclude.has('Promise') || exclude.has('any')) return
const Class = target.Promise || globalThis.Promise
if (!Class.any)
Object.defineProperty(Class, 'any', {
value: any,
writable: true,
enumerable: false,
configurable: true,
})
}

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@ -1,30 +0,0 @@
import * as _ from './utils'
export const replaceAll = {
replaceAll(
this: string,
searchValue: RegExp | string,
replaceValue: string | ((substring: string, ...args: any[]) => string)
) {
return _.__object_isPrototypeOf(RegExp.prototype, searchValue)
? this.replace(searchValue as RegExp, replaceValue as string)
: this.replace(
new RegExp(_.__string_escapeRegExp(searchValue as string), 'g'),
replaceValue as string
)
},
}.replaceAll
export const initString = (target: any, exclude: Set<string>) => {
if (exclude.has('String') || exclude.has('replaceAll')) return
const Class = target.String || globalThis.String
if (!Class.prototype.replaceAll)
Object.defineProperty(Class.prototype, 'replaceAll', {
value: replaceAll,
writable: true,
enumerable: false,
configurable: true,
})
}

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@ -1,8 +1,5 @@
import { performance } from 'node:perf_hooks'
/** Returns the milliseconds elapsed since January 1, 1970 00:00:00 UTC. */
export const __date_now = Date.now
/** Returns the function bound to the given object. */
export const __function_bind = Function.bind.bind(
Function.call as unknown as any
@ -12,34 +9,6 @@ export const __function_bind = Function.bind.bind(
...args: TArgs
) => TFunc
/** Returns the function called with the specified values. */
export const __function_call = Function.call.bind(
Function.call as unknown as any
) as <TArgs extends any, TFunc extends (...args: TArgs[]) => any>(
callback: TFunc,
thisArg: unknown,
...args: TArgs[]
) => ReturnType<TFunc>
/** Returns an object with the specified prototype. */
export const __object_create = Object.create as {
<T extends any = any>(value: T): any extends T ? Record<any, any> : T
}
/** Returns whether an object has a property with the specified name. */
export const __object_hasOwnProperty = Function.call.bind(
Object.prototype.hasOwnProperty
) as {
<T1 extends object, T2>(object: T1, key: T2): T2 extends keyof T1
? true
: false
}
/** Returns a string representation of an object. */
export const __object_toString = Function.call.bind(
Object.prototype.toString
) as { (value: any): string }
/** Returns whether the object prototype exists in another object. */
export const __object_isPrototypeOf = Function.call.bind(
Object.prototype.isPrototypeOf
@ -48,10 +17,6 @@ export const __object_isPrototypeOf = Function.call.bind(
/** Current high resolution millisecond timestamp. */
export const __performance_now = performance.now as () => number
/** Returns the string escaped for use inside regular expressions. */
export const __string_escapeRegExp = (value: string) =>
value.replace(/[\\^$*+?.()|[\]{}]/g, '\\$&')
// @ts-ignore
export const INTERNALS = new WeakMap<unknown, any>()

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@ -1,10 +1,5 @@
import {
AbortController,
AbortSignal,
alert,
atob,
Blob,
btoa,
ByteLengthQueuingStrategy,
cancelAnimationFrame,
cancelIdleCallback,
@ -43,11 +38,7 @@ import {
initCustomElementRegistry,
initDocument,
initMediaQueryList,
initObject,
initPromise,
initRelativeIndexingMethod,
initStorage,
initString,
initWindow,
IntersectionObserver,
MediaQueryList,
@ -87,12 +78,7 @@ import { inheritance } from './inheritance'
export { pathToPosix } from './lib/utils'
export {
AbortController,
AbortSignal,
alert,
atob,
Blob,
btoa,
ByteLengthQueuingStrategy,
cancelAnimationFrame,
cancelIdleCallback,
@ -162,9 +148,6 @@ export {
export const polyfill = (target: any, options?: PolyfillOptions) => {
const webAPIs = {
AbortController,
AbortSignal,
Blob,
ByteLengthQueuingStrategy,
CanvasRenderingContext2D,
CharacterData,
@ -225,8 +208,6 @@ export const polyfill = (target: any, options?: PolyfillOptions) => {
Window,
alert,
atob,
btoa,
cancelAnimationFrame,
cancelIdleCallback,
clearTimeout,
@ -314,12 +295,8 @@ export const polyfill = (target: any, options?: PolyfillOptions) => {
}
}
initObject(target, excludeOptions)
initMediaQueryList(target, excludeOptions)
initPromise(target, excludeOptions)
initRelativeIndexingMethod(target, excludeOptions)
initStorage(target, excludeOptions)
initString(target, excludeOptions)
initWindow(target, excludeOptions)
return target
@ -330,11 +307,7 @@ polyfill.internals = (target: any, name: string) => {
CustomElementRegistry: initCustomElementRegistry,
Document: initDocument,
MediaQueryList: initMediaQueryList,
Object: initObject,
Promise: initPromise,
RelativeIndexingMethod: initRelativeIndexingMethod,
Storage: initStorage,
String: initString,
Window: initWindow,
}

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@ -1,11 +1,5 @@
// @ts-check
import {
AbortController,
AbortSignal,
} from 'abort-controller/dist/abort-controller.mjs'
import { Event, EventTarget } from 'event-target-shim'
import { Blob, File } from 'fetch-blob/from.js'
import { FormData } from 'formdata-polyfill/esm.min.js'
import {
ByteLengthQueuingStrategy,
@ -27,7 +21,6 @@ import {
cancelAnimationFrame,
requestAnimationFrame,
} from './lib/AnimationFrame'
import { atob, btoa } from './lib/Base64'
import { CharacterData, Comment, Text } from './lib/CharacterData'
import { CustomEvent } from './lib/CustomEvent'
import { DOMException } from './lib/DOMException'
@ -78,20 +71,13 @@ import { initWindow, Window } from './lib/Window'
import { alert } from './lib/Alert'
import { initObject } from './lib/Object'
import { initPromise } from './lib/Promise'
import { initRelativeIndexingMethod } from './lib/RelativeIndexingMethod'
import { initString } from './lib/String'
const fetch = undici.fetch
const Headers = undici.Headers
const Response = undici.Response
const Request = undici.Request
const File = undici.File
export {
AbortController,
AbortSignal,
Blob,
ByteLengthQueuingStrategy,
CanvasRenderingContext2D,
CharacterData,
@ -151,8 +137,6 @@ export {
WritableStreamDefaultWriter,
Window,
alert,
atob,
btoa,
cancelAnimationFrame,
cancelIdleCallback,
clearTimeout,
@ -164,10 +148,6 @@ export {
initCustomElementRegistry,
initDocument,
initMediaQueryList,
initObject,
initPromise,
initRelativeIndexingMethod,
initStorage,
initString,
initWindow,
}

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@ -2,4 +2,3 @@ declare module 'node:*'
declare module '@ungap/structured-clone/esm/index.js'
declare module '@ungap/structured-clone/esm/deserialize.js'
declare module '@ungap/structured-clone/esm/serialize.js'
declare module 'abort-controller/dist/abort-controller.mjs'

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@ -1,29 +0,0 @@
import { expect } from 'chai'
import { polyfill } from '../mod.js'
describe('Base64', () => {
const target = {}
before(() => polyfill(target))
it('Supports Base64 Methods', () => {
expect(target).to.have.property('atob').that.is.a('function')
expect(target).to.have.property('btoa').that.is.a('function')
})
it('Supports atob(data)', () => {
const a = 'SGVsbG8sIHdvcmxk'
const b = target.atob(a)
expect(a).to.equal('SGVsbG8sIHdvcmxk')
expect(b).to.equal('Hello, world')
})
it('Supports btoa(data)', () => {
const b = 'Hello, world'
const a = target.btoa(b)
expect(a).to.equal('SGVsbG8sIHdvcmxk')
expect(b).to.equal('Hello, world')
})
})

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@ -6,9 +6,6 @@ describe('Basic', () => {
it('Globals exist', () => {
const webAPIs = [
'AbortController',
'AbortSignal',
'Blob',
'ByteLengthQueuingStrategy',
'CSSStyleSheet',
'CountQueuingStrategy',
@ -66,32 +63,6 @@ describe('Basic', () => {
}
})
it('Constructs an Event', () => {
const e = new Event('test')
expect(e.type).to.equal('test')
})
it('Constructs an EventTarget', () => {
const _t = new EventTarget()
})
it('Dispatches an Event on an EventTarget', () => {
const t = new EventTarget()
let pass = false
t.addEventListener('test', (event) => {
pass = true
})
const e = new Event('test')
t.dispatchEvent(e)
expect(pass).to.equal(true)
})
it('Classes extend as expected', () => {
expect(HTMLElement.prototype).to.be.an.instanceof(Element)
expect(Element.prototype).to.be.an.instanceof(Node)
@ -113,73 +84,4 @@ describe('Basic', () => {
it('globalThis.window === globalThis', () => {
expect(globalThis.window).to.equal(globalThis)
})
it('Relative Indexing Method (String#at)', () => {
expect(String.prototype.at).to.be.a('function')
expect(String.prototype.at.length).to.equal(1)
const example = 'The quick brown fox jumps over the lazy dog.'
expect(example.at(2)).to.equal('e')
expect(example.at(-2)).to.equal('g')
})
it('Relative Indexing Method (Array#at)', () => {
expect(Array.prototype.at).to.be.a('function')
expect(Array.prototype.at.length).to.equal(1)
const example = [1, 3, 5, 7, 9]
expect(example.at(1)).to.equal(3)
expect(example.at(-1)).to.equal(9)
})
it('Relative Indexing Method (TypedArray#at)', () => {
expect(Int8Array.prototype.at).to.be.a('function')
expect(Int8Array.prototype.at.length).to.equal(1)
const example = new Int8Array([1, 3, 5, 7, 9])
expect(example.at(1)).to.equal(3)
expect(example.at(-1)).to.equal(9)
})
it('Object.hasOwn', () => {
expect(Object.hasOwn).to.be.a('function')
expect(Object.hasOwn.length).to.equal(2)
const example = {}
expect(Object.hasOwn(example, 'prop')).to.equal(false)
example.prop = 'exists'
expect(Object.hasOwn(example, 'prop')).to.equal(true)
})
it('Promise.any', () => {
expect(Promise.any).to.be.a('function')
expect(Promise.any.length).to.equal(1)
Promise.any([
Promise.resolve(42),
Promise.reject(-1),
Promise.reject(Infinity),
]).then((result) => {
expect(result).to.equal(42)
})
})
it('String#replaceAll', () => {
expect(String.prototype.replaceAll).to.be.a('function')
expect(String.prototype.replaceAll.length).to.equal(2)
const t1 =
'Of all the sorcerers in Harry Potter, Halo is my favorite sorcerer.'
const t2 = t1.replaceAll('sorcerer', 'philosopher')
const t3 =
'Of all the philosophers in Harry Potter, Halo is my favorite philosopher.'
expect(t2).to.equal(t3)
})
})

View file

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