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Fix issue #8 (setItem throws JSON Parse error) #9

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Fix issue #8 (setItem throws JSON Parse error) #9

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19 changes: 16 additions & 3 deletions src/storage.js
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Original file line number Diff line number Diff line change
Expand Up @@ -25,7 +25,12 @@ export const getAsync = async (key, secureStoreOptions) => {
const storageFileUri = await fixedStorageUri(secureStoreOptions);
if (storageFileUri) {
const storageString = await FileSystem.readAsStringAsync(storageFileUri);
const storage = JSON.parse(storageString);

let storage = {};
if (storageString) {
storage = JSON.parse(storageString);
}

const encryptedValue = storage[key];
value = AES.decrypt(encryptedValue, aesKey);
}
Expand All @@ -44,7 +49,10 @@ export const setAsync = async (key, value, secureStoreOptions) => {
const currentStorageFileUri = await fixedStorageUri(secureStoreOptions);
if (currentStorageFileUri) {
const storageString = await FileSystem.readAsStringAsync(currentStorageFileUri);
storage = JSON.parse(storageString);

if (storageString) {
storage = JSON.parse(storageString);
}
}

const { encryptionKey, encryptedData } = AES.encryptWithRandomKey(value);
Expand Down Expand Up @@ -72,7 +80,12 @@ export const removeAsync = async (key, secureStoreOptions) => {
const currentStorageFileUri = await fixedStorageUri(secureStoreOptions);
if (currentStorageFileUri) {
let storageString = await FileSystem.readAsStringAsync(currentStorageFileUri);
storage = JSON.parse(storageString);

let storage = {};
if (storageString) {
storage = JSON.parse(storageString);
}

delete storage.key;
storageString = JSON.stringify(storage);

Expand Down