17 lines
533 B
TypeScript
17 lines
533 B
TypeScript
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export function loadState<T>(app: string, key: string, fallback?: T): T {
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const elem = <HTMLInputElement>document.querySelector(`#initial-state-${app}-${key}`);
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if (elem === null) {
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if (fallback !== undefined) {
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return fallback;
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}
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throw new Error(`Could not find initial state ${key} of ${app}`);
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}
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try {
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const value = atob(elem.value);
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return JSON.parse(value);
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} catch (e) {
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throw new Error(`Could not parse initial state ${key} of ${app}`);
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}
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}
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