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// Pure price-mode logic (no DOM), imported by both the element and its test. |
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/** Which of the two prices the tier radios should carry. */ |
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export type PriceMode = 'founder' | 'list'; |
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/** The two prices a tier card publishes as data attributes. */ |
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export interface TierPrices { |
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std: string | null; |
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founder: string | null; |
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} |
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|
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/** |
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* The price a tier should carry in the given mode. |
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* |
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* Returns `null` when the card does not publish the price that mode needs, so |
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* the caller leaves the DOM alone rather than writing `undefined` into a form |
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* value the server computes on. That happens on a page rendered with the |
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* founder window shut, where there is no toggle and nothing should move. |
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*/ |
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export function priceFor(prices: TierPrices, mode: PriceMode): string | null { |
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const chosen = mode === 'founder' ? prices.founder : prices.std; |
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return chosen === null || chosen === '' ? null : chosen; |
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} |
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|
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/** |
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* Render a monthly price the way the tier card writes it. |
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* |
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* Kept here rather than inlined so the test pins the format: the server |
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* renders the first one, the toggle renders every one after, and the two must |
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* agree or the price visibly reformats the first time somebody flips it. |
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*/ |
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export function formatMonthly(price: string): string { |
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return `$${price}/mo`; |
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} |
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