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astro/packages/webapi/test/internals.js

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import { assert, test } from '../run/test.setup.js'
import { polyfill } from '../mod.js'
test(() => {
return [
{
name: 'Includes polyfill.internals functionality',
test() {
const target = {}
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polyfill(target, { exclude: 'window document' })
const pseudo = { ...target }
assert.equal(Reflect.has(pseudo, 'document'), false)
const CustomElement = class extends pseudo.HTMLElement {}
pseudo.customElements.define('custom-element', CustomElement)
polyfill.internals(pseudo, 'Document')
assert.equal(Reflect.has(pseudo, 'document'), true)
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assert.equal(
CustomElement.prototype.isPrototypeOf(
pseudo.document.createElement('custom-element')
),
true
)
},
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},
]
})