DMleadgen
46d973904b
Next.js website for Rocky Mountain Vending company featuring: - Product catalog with Stripe integration - Service areas and parts pages - Admin dashboard with Clerk authentication - SEO optimized pages with JSON-LD structured data Co-authored-by: Cursor <cursoragent@cursor.com>
255 lines
7.2 KiB
Text
255 lines
7.2 KiB
Text
type Whitespace = ' ' | '\n' | '\r' | '\f' | '\t'
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type Trim<S extends string> = S extends `${infer T}${Whitespace}`
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? Trim<T>
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: S extends `${Whitespace}${infer T}`
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? Trim<T>
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: S
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type Combinators = ' ' | '>' | '~' | '+'
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type GetLastTag<I> = I extends `${string}${Combinators}${infer Right}`
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? Right extends '' // right arm can't be empty
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? unknown
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: GetLastTag<Right>
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: I
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type PseudoPrefix =
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| 'a'
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| 'b'
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| 'c'
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| 'd'
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| 'e'
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| 'f'
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| 'h'
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| 'i'
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| 'l'
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| 'n'
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| 'o'
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| 'p'
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| 'r'
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| 's'
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| 't'
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| 'u'
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| 'v'
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| 'w'
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| ':-'
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type Split<S> = S extends `${string},` // invalid selector
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? unknown
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: S extends ''
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? ''
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: SplitRec<S>
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type SplitRec<S, Acc = never> = S extends `${infer Left},${infer Right}`
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? SplitRec<Right, Acc | Left>
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: S extends ''
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? Acc
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: SplitRec<'', Acc | S>
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type Quotes = '"' | "'"
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// DO NOT use union type like `${infer L},${Whitespace}${infer R}` here,
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// or it may cause OOM when running tsc in downstream projects.
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type PreprocessGrouping<I> = I extends `${infer L}, ${infer R}`
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? PreprocessGrouping<`${L},${R}`>
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: I extends `${infer L},\n${infer R}`
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? PreprocessGrouping<`${L},${R}`>
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: I extends `${infer L},\r${infer R}`
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? PreprocessGrouping<`${L},${R}`>
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: I extends `${infer L},\f${infer R}`
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? PreprocessGrouping<`${L},${R}`>
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: I extends `${infer L},\t${infer R}`
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? PreprocessGrouping<`${L},${R}`>
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: I
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type Preprocess<I> = I extends `${string}[]${string}` // invalid selector
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? unknown
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: PreprocessUnchecked<I>
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type PreprocessUnchecked<I> = I extends `${infer L}\\${Quotes}${infer R}` // remove escaped quotes
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? PreprocessUnchecked<`${L}${R}`>
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: I extends `${infer L}"${string}"${infer R}` // remove quoted content in attribute
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? PreprocessUnchecked<`${L}${R}`>
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: I extends `${infer L}'${string}'${infer R}` // remove quoted content in attribute
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? PreprocessUnchecked<`${L}${R}`>
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: I extends `${infer L}[${string}]${infer R}` // process attribute
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? PreprocessUnchecked<`${L}#x${R}`> // replace it with a fake ID selector
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: I extends `${infer L}[${string}${infer R}` // process unclosed attribute
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? PreprocessUnchecked<`${L}#x${R}`> // replace it with a fake ID selector
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: I
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/** Parse `:is()` and `:where()` */
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type ExpandFunctions<I> = I extends `${infer L}:is(${infer Args})${infer R}`
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? Split<Trim<Args>> extends string
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? ExpandFunctions<`${L}&${Split<Trim<Args>>}${R}`>
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: unknown
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: I extends `${infer L}:where(${infer Args})${infer R}`
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? Split<Trim<Args>> extends string
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? ExpandFunctions<`${L}&${Split<Trim<Args>>}${R}`>
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: unknown
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: I extends `${infer L}:${infer Pseudo}(${string})${infer R}`
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? IsIdentifier<Pseudo> extends true
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? ExpandFunctions<`${L}${R}`>
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: I
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: I
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/** Check whether each tag is valid or not. */
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type Postprocess<Tags> = PostprocessEach<GetLastTag<Tags>> extends string
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? PostprocessEach<GetLastTag<Tags>>
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: unknown
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/** Postprocess each tag with simple validation. */
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type PostprocessEach<I> = I extends `${string}.` // invalid class selector
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? unknown
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: I extends `${string}#` // invalid ID selector
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? unknown
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: PostprocessEachUnchecked<I>
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type PostprocessEachUnchecked<I> =
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I extends `${infer Tag}.${string}&${infer Rest}`
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? PostprocessEachUnchecked<`${Tag}&${Rest}`>
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: I extends `${infer Tag}.${string}`
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? PostprocessEachUnchecked<Tag>
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: I extends `${infer Tag}#${string}&${infer Rest}`
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? PostprocessEachUnchecked<`${Tag}&${Rest}`>
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: I extends `${infer Tag}#${string}`
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? PostprocessEachUnchecked<Tag>
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: I extends `${infer Tag}:${PseudoPrefix}${string}&${infer Rest}`
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? PostprocessEachUnchecked<`${Tag}&${Rest}`>
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: I extends `${infer Tag}:${PseudoPrefix}${string}`
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? PostprocessEachUnchecked<Tag>
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: I extends `${string}|${infer Tag}` // namespace prefix
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? PostprocessEachUnchecked<Tag>
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: I
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type ParseSelectorToTagNames<I extends string> = Trim<I> extends ''
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? unknown
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: Postprocess<Split<ExpandFunctions<Preprocess<PreprocessGrouping<Trim<I>>>>>>
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export type ParseSelector<
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I extends string,
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Fallback extends Element = Element,
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> = ParseSelectorToTagNames<I> extends string
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? ExpandAnd<ParseSelectorToTagNames<I>, Fallback> extends Fallback
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? ExpandAnd<ParseSelectorToTagNames<I>, Fallback>
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: Fallback
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: Fallback
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/**
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* Wrapper for `...&...` syntax expander.
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*
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* `&` is valid, but the expander will return the default result which is `unknown`,
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* so we must check the result and if it's `unknown` we will turn it into `Fallback`.
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*/
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type ExpandAnd<
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I extends string,
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Fallback extends Element,
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> = unknown extends ExpandAndInner<I, Fallback>
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? Fallback
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: ExpandAndInner<I, Fallback>
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/**
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* Actually expand the `...&...` syntax.
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*
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* The reason why we choose `unknown` as initial type is
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* that `unknown & T` equals to `T`.
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*/
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type ExpandAndInner<
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I extends string,
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Fallback extends Element,
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Result extends Element | unknown = unknown,
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> = I extends `${'' | '*'}&${infer Rest}`
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? ExpandAndInner<Rest, Fallback, Result>
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: I extends `${infer Tag}&${infer Rest}`
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? ExpandAndInner<Rest, Fallback, Result & TagNameToElement<Tag, Fallback>>
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: I extends '' | '*'
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? Result
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: ExpandAndInner<'', Fallback, Result & TagNameToElement<I, Fallback>>
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export type TagNameToElement<
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Tag extends string,
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Fallback extends Element = Element,
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> = Tag extends keyof HTMLElementTagNameMap
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? HTMLElementTagNameMap[Tag]
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: Tag extends keyof SVGElementTagNameMap
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? SVGElementTagNameMap[Tag]
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: Fallback
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// --------------------------------------------------------
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// Strict Parser
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// --------------------------------------------------------
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// Specification is here: https://drafts.csswg.org/css-syntax-3/#ident-token-diagram
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// but we don't plan to comply that fully,
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// otherwise it will increase type-checking time and the complexity of parser.
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type LowerCaseLetter =
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| 'a'
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| 'b'
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| 'c'
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| 'd'
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| 'e'
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| 'f'
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| 'g'
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| 'h'
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| 'i'
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| 'j'
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| 'k'
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| 'l'
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| 'm'
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| 'n'
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| 'o'
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| 'p'
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| 'q'
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| 'r'
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| 's'
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| 't'
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| 'u'
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| 'v'
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| 'w'
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| 'x'
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| 'y'
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| 'z'
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type Digit = '0' | '1' | '2' | '3' | '4' | '5' | '6' | '7' | '8' | '9'
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type IdentifierFirstChar =
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| LowerCaseLetter
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| Uppercase<LowerCaseLetter>
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| '-'
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| '_'
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type IdentifierChar = IdentifierFirstChar | Digit
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type IsIdentifier<S> = S extends `${infer FirstChar}${infer Rest}`
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? FirstChar extends IdentifierFirstChar
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? IsValidRestChars<Rest>
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: false
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: false
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type IsValidTags<S> = S extends `${infer Head}&${infer Rest}`
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? IsValidTagName<Head> extends true
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? IsValidTags<Rest>
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: false
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: IsValidTagName<S>
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type IsValidTagName<S> = S extends '' | '*'
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? true
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: S extends `${infer H}${infer Rest}`
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? H extends IdentifierFirstChar
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? IsValidRestChars<Rest>
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: false
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: string extends S
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? true
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: false
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type IsValidRestChars<S extends string> = S extends `${infer H}${infer Rest}`
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? H extends IdentifierChar
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? IsValidRestChars<Rest>
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: false
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: true // no characters left, so it's OK
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export type StrictlyParseSelector<
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S extends string,
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Fallback extends Element = Element,
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> = string extends S
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? Fallback
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: ParseSelectorToTagNames<S> extends infer Tags
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? IsValidTags<Tags> extends true
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? Tags extends string
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? ExpandAnd<Tags, Fallback>
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: never
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: never
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: never
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