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July 20, 2022 09:40
Wait for Firebase emulators to finish
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import { client as Client, connection as Connection } from 'websocket' | |
export interface LogMessage { | |
type: string | |
utf8Data: string | |
} | |
export interface LogMessageContent { | |
level: string | |
data: Data | |
timestamp: number | |
message: string | |
} | |
export interface Data { | |
metadata: Metadata | |
} | |
export interface Metadata { | |
emulator: Emulator | |
function: Emulator | |
message: string | |
} | |
export interface Emulator { | |
name: string | |
} | |
let con: Connection | |
const listeners: (() => void)[] = [] | |
export function initFirebaseListener(waitTimeMs: number = 100) { | |
return new Promise((resolve) => { | |
if (con) { | |
resolve(true) | |
} | |
const socket = new Client() | |
socket.connect('ws://localhost:4500/') | |
socket.on('connect', (connection) => { | |
con = connection | |
let debounce: NodeJS.Timeout | |
con.on('message', (message) => { | |
const data = message as any as LogMessage | |
const messageContent = JSON.parse(data.utf8Data) as LogMessageContent | |
if (messageContent.message.startsWith('Beginning execution of "')) { | |
if (debounce) { | |
clearTimeout(debounce) | |
} | |
} else if (messageContent.message.startsWith('Finished "')) { | |
debounce = setTimeout( | |
() => listeners.forEach((listener) => listener()), | |
waitTimeMs | |
) | |
} | |
}) | |
resolve(true) | |
}) | |
}) | |
} | |
export function closeSocket() { | |
con.close() | |
} | |
export function waitForFirebaseToFinish() { | |
return new Promise((resolve) => { | |
listeners.push(() => resolve(true)) | |
}) | |
} |
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