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Added json parsing errors handling

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Dmitriy Shishkov 2021-07-16 21:07:02 +05:00
parent 515068c574
commit d472664604
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GPG Key ID: 14358F96FCDD8060
1 changed files with 20 additions and 9 deletions
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29
src/utils/localStorage.ts
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@ -4,10 +4,13 @@ import { validateResponse } from "~/utils/api";
export const getHashList = () => { export const getHashList = () => {
const hashListStr = localStorage.getItem("list") || "[]"; const hashListStr = localStorage.getItem("list") || "[]";
const hashList: unknown = JSON.parse(hashListStr); try {
const hashList: unknown = JSON.parse(hashListStr);
if (isArrOfStr(hashList)) return hashList; if (isArrOfStr(hashList)) return hashList;
else { else throw new Error("ValidationError");
} catch (e) {
console.error(e);
localStorage.setItem("list", "[]"); localStorage.setItem("list", "[]");
return []; return [];
} }
@ -17,8 +20,12 @@ export const getBookHT = (hashList: string[]) => {
const bookHT: Record<string, IBook> = {}; const bookHT: Record<string, IBook> = {};
hashList.forEach((hash) => { hashList.forEach((hash) => {
const obj: unknown = JSON.parse(localStorage.getItem(hash) || "{}"); try {
if (validateResponse(obj)) bookHT[hash] = obj; const obj: unknown = JSON.parse(localStorage.getItem(hash) || "{}");
if (validateResponse(obj)) bookHT[hash] = obj;
} catch (e) {
console.error(e);
}
}); });
return bookHT; return bookHT;
@ -50,11 +57,15 @@ export const loadPages = (
const str = localStorage.getItem(hashStr(hash, height, width)); const str = localStorage.getItem(hashStr(hash, height, width));
if (str) { if (str) {
const obj: unknown = JSON.parse(str); try {
const obj: unknown = JSON.parse(str);
if (validatePages(obj)) { if (validatePages(obj)) {
cb(obj); cb(obj);
return true; return true;
}
} catch (e) {
console.error(e);
} }
} }