Scenario generator for vore roleplay and story ideas.
https://scenario-generator.deliciousreya.net/responses
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62 lines
2.2 KiB
62 lines
2.2 KiB
export function jsonParser<OutputT extends object = object, KeysT extends keyof OutputT = keyof OutputT, InputT extends { readonly [key in KeysT]: string } = { readonly [key in KeysT]: string }>(keys: readonly KeysT[]): (value: InputT) => Pick<OutputT, KeysT> {
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const keysCopy = keys.slice()
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return (value) => {
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const result: Partial<Pick<OutputT, KeysT>> = {}
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for (const key of keysCopy) {
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result[key] = JSON.parse(value[key])
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}
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return result as Pick<OutputT, KeysT>
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}
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}
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export function rows<OutputT extends object = object, InputT extends object = object>(transformer?: (value: InputT) => OutputT): (result: D1Result<object>) => OutputT[] {
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if (transformer) {
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return (result) => (result.results as InputT[]).map(transformer)
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} else {
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return (result) => result.results as OutputT[];
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}
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}
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export function guaranteedSingleton<OutputT extends object = object, InputT extends object = object>(transformer?: (value: InputT) => OutputT): (result: D1Result<object>) => OutputT {
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const inner = singleton<OutputT, InputT>(transformer)
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return (result) => {
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const out = inner(result)
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if (out === null) {
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throw Error('expected exactly one result but got none')
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}
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return out
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}
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}
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export function singleton<OutputT extends object = object, InputT extends object = object>(transformer?: (value: InputT) => OutputT): (result: D1Result<object>) => OutputT | null {
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if (transformer) {
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return (result) => {
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if (result.results.length > 1) {
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throw Error(`expected single result but got ${result.results.length}`);
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}
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const resultRow = result.results[0] as InputT|undefined
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return resultRow ? transformer(resultRow) : null;
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};
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} else {
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return (result) => {
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if (result.results.length > 1) {
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throw Error(`expected single result but got ${result.results.length}`);
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}
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const resultRow = result.results[0] as OutputT|undefined
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return resultRow ?? null;
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};
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}
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}
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export function nothing(): (result: D1Result) => void {
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return (result) => {
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if (result.results.length > 0) {
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throw Error(`expected no results but got ${result.results.length}`);
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}
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};
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}
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export function writeCount(): (result: D1Result) => number {
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return (result) => result.meta.rows_written;
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}
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