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Prefer arrow functions (#2344)

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Lipis 2020-11-06 22:06:39 +02:00 • committed by GitHub
parent e05acd6fd9
commit a20f3240fd
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19 changed files with 304 additions and 336 deletions
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34
src/data/firebase.ts
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@ -8,7 +8,7 @@ let firebasePromise: Promise<
typeof import("firebase/app").default
> | null = null;
async function loadFirebase() {
const loadFirebase = async () => {
const firebase = (
await import(/* webpackChunkName: "firebase" */ "firebase/app")
).default;
@ -18,15 +18,17 @@ async function loadFirebase() {
firebase.initializeApp(firebaseConfig);
return firebase;
}
};
async function getFirebase(): Promise<typeof import("firebase/app").default> {
const getFirebase = async (): Promise<
typeof import("firebase/app").default
> => {
if (!firebasePromise) {
firebasePromise = loadFirebase();
}
const firebase = await firebasePromise!;
return firebase;
}
};
interface FirebaseStoredScene {
sceneVersion: number;
@ -34,10 +36,10 @@ interface FirebaseStoredScene {
ciphertext: firebase.default.firestore.Blob;
}
async function encryptElements(
const encryptElements = async (
key: string,
elements: readonly ExcalidrawElement[],
): Promise<{ ciphertext: ArrayBuffer; iv: Uint8Array }> {
): Promise<{ ciphertext: ArrayBuffer; iv: Uint8Array }> => {
const importedKey = await getImportedKey(key, "encrypt");
const iv = createIV();
const json = JSON.stringify(elements);
@ -52,13 +54,13 @@ async function encryptElements(
);
return { ciphertext, iv };
}
};
async function decryptElements(
const decryptElements = async (
key: string,
iv: Uint8Array,
ciphertext: ArrayBuffer,
): Promise<readonly ExcalidrawElement[]> {
): Promise<readonly ExcalidrawElement[]> => {
const importedKey = await getImportedKey(key, "decrypt");
const decrypted = await window.crypto.subtle.decrypt(
{
@ -73,7 +75,7 @@ async function decryptElements(
new Uint8Array(decrypted) as any,
);
return JSON.parse(decodedData);
}
};
const firebaseSceneVersionCache = new WeakMap<SocketIOClient.Socket, number>();
@ -90,10 +92,10 @@ export const isSavedToFirebase = (
return true;
};
export async function saveToFirebase(
export const saveToFirebase = async (
portal: Portal,
elements: readonly ExcalidrawElement[],
) {
) => {
const { roomID, roomKey, socket } = portal;
if (
// if no room exists, consider the room saved because there's nothing we can
@ -141,12 +143,12 @@ export async function saveToFirebase(
}
return didUpdate;
}
};
export async function loadFromFirebase(
export const loadFromFirebase = async (
roomID: string,
roomKey: string,
): Promise<readonly ExcalidrawElement[] | null> {
): Promise<readonly ExcalidrawElement[] | null> => {
const firebase = await getFirebase();
const db = firebase.firestore();
@ -159,4 +161,4 @@ export async function loadFromFirebase(
const ciphertext = storedScene.ciphertext.toUint8Array();
const iv = storedScene.iv.toUint8Array();
return restoreElements(await decryptElements(roomKey, iv, ciphertext));
}
};