All files / app/codeCharta/ui/customConfigs/addCustomConfigButton/addCustomConfigDialog/downloadAndPurgeConfigs validateLocalStorageSize.ts

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export const validateLocalStorageSize = () => {
    const customLocalStorageLimitInKB = 768
    let allStringsConcatenated = ""
    for (const [key, value] of Object.entries(localStorage)) {
        allStringsConcatenated += key + value
    }
 
    // It does not exist a limit for the total localStorage size that applies to all browsers.
    // Usually 2MB - 10MB are available (5MB seems to be very common).
    // The localStorage size (e.g. 5MB) is assigned per origin.
    // Multiply localStorage characters by 16 (bits because they are stored in UTF-16).
    // Add 3KB as it seems there is some default overhead.
    const localStorageSizeInKB = 3 + (allStringsConcatenated.length * 16) / 8 / 1024
 
    return localStorageSizeInKB <= customLocalStorageLimitInKB
}