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Merged
merged 3 commits into from
Nov 6, 2020
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types: add support for null/fragment type in typescript definition #6

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664b864
types: add support for null/fragment type in typescript definition
ChristianMurphy Nov 6, 2020
7729efb
types: overload xastscript so fragements return Root
ChristianMurphy Nov 6, 2020
7141b74
types: fragment does not support attributes
ChristianMurphy Nov 6, 2020
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10 changes: 9 additions & 1 deletion types/index.d.ts
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
// TypeScript Version: 3.7

import {Element, Node} from 'xast'
import {Element, Node, Root} from 'xast'

type Children = string | Node | number | Children[]

Expand All @@ -19,6 +19,14 @@ type Attributes = Record<string, Primitive>
*/
declare function xastscript(name: string, ...children: Children[]): Element

/**
* Create XML trees in xast.
*
* @param name Qualified name. Case sensitive and can contain a namespace prefix (such as rdf:RDF).
* @param children (Lists of) child nodes. When strings are encountered, they are mapped to Text nodes.
*/
declare function xastscript(name: null, ...children: Children[]): Root

/**
* Create XML trees in xast.
*
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6 changes: 6 additions & 0 deletions types/test.ts
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Expand Up @@ -2,12 +2,17 @@ import x = require('xastscript')

x('urlset') // $ExpectType Element
x('urlset', 'string') // $ExpectType Element
x('urlset', 1) // $ExpectType Element
x('urlset', ['string', 'string']) // $ExpectType Element
x('urlset', x('loc'), 'string') // $ExpectType Element
x('urlset', x('loc')) // $ExpectType Element
x('urlset', x('loc'), x('loc')) // $ExpectType Element
x('urlset', [x('loc'), x('loc')]) // $ExpectType Element
x('urlset', []) // $ExpectType Element
x(null) // $ExpectType Root
x(null, 'string') // $ExpectType Root
x(null, 1) // $ExpectType Root
x(null, []) // $ExpectType Root

const xmlns = 'http://www.sitemaps.org/schemas/sitemap/0.9'

Expand All @@ -30,3 +35,4 @@ x('urlset', {xmlNumberAttribute}, []) // $ExpectType Element
x() // $ExpectError
x(false) // $ExpectError
x('urlset', x('loc'), {xmlns}) // $ExpectError
x(null, {xmlns}) // $ExpectError