43 lines
932 B
JavaScript
43 lines
932 B
JavaScript
// LocalStorage and IDB may be disabled in private mode, when "blocking cookies" in Safari,
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// or other cases
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import { thunk } from './thunk'
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const testKey = '__test__'
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export const testHasLocalStorage = thunk(() => {
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try {
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localStorage.setItem(testKey, testKey)
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if (!localStorage.length || localStorage.getItem(testKey) !== testKey) {
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return false
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}
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localStorage.removeItem(testKey)
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} catch (e) {
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return false
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}
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return true
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})
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export const testHasIndexedDB = thunk(async () => {
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if (typeof indexedDB === 'undefined') {
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return false
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}
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try {
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const idbFailed = await new Promise(resolve => {
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const db = indexedDB.open(testKey)
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db.onerror = () => resolve(true)
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db.onsuccess = () => {
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indexedDB.deleteDatabase(testKey)
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resolve(false)
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}
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})
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if (idbFailed) {
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return false
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}
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} catch (e) {
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return false
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}
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return true
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})
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