27 lines
559 B
TypeScript
27 lines
559 B
TypeScript
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import React from 'react'
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interface Config {
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apiUrl: string
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}
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async function loadConfig(): Promise<Config> {
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const response = await fetch('./config.json')
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const config = await response.json()
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return config
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}
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let _configPromise: Promise<Config> = loadConfig()
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let _configCache: null | Config = null
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export function useConfig() {
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const [config, setConfig] = React.useState<Config>(_configCache)
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React.useEffect(() => {
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if (!_configCache) {
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_configPromise.then(setConfig)
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}
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}, [])
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return config
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}
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export default _configPromise
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