Client initialization options

Login helpers take a separate login argument and an InitOptions object. Every login flow requires a device value.

import { loginWithQR } from "@nezumi0627/vylinejs";
import { FileStorage } from "@nezumi0627/vylinejs/storage";

const client = await loginWithQR({
	onReceiveQRUrl(url) {
		console.log(url);
	},
	onPincodeRequest(pin) {
		console.log("Enter this PIN in LINE:", pin);
	},
}, {
	device: "IOSIPAD",
	storage: new FileStorage("./private/line-session.json"),
	// endpoint: "legy.line-apps.com",
	// version: "26.6.2",
	// fetch: (input, init) => fetch(input, init),
	// legy: { encrypted: "auto" },
});

Options

Option	Type	Default	Purpose
device	Device	Required	Protocol device profile, such as IOSIPAD, ANDROID, or DESKTOPWIN.
version	string	Device-specific	LINE application version sent in protocol identification fields. Override only when you know which profile the server expects.
endpoint	string	legy.line-apps.com	API endpoint used by the client. Most users should keep the default.
storage	BaseStorage	MemoryStorage	Persists credentials, E2EE material, and protocol state. Use protected persistent storage for a long-running client.
fetch	FetchLike	globalThis.fetch	Custom network function for environments that need a proxy or custom transport.
legy.encrypted	boolean | "auto"	"auto"	Controls LEGY request encryption. auto selects behavior based on the credential/token type.
legy.endpoint	string	Library default	Overrides the LEGY endpoint when using a custom compatible server.

Supported device strings are DESKTOPWIN, DESKTOPMAC, ANDROID, ANDROIDSECONDARY, IOS, IOSIPAD, WATCHOS, and WEAROS. LINE may reject a device/version combination; these values imitate protocol profiles and do not identify the host operating system.

MemoryStorage is cleared when the process exits. FileStorage writes JSON in plaintext, so restrict access to the file. For encrypted persistence, use EncryptedStorage with a non-exportable AES-GCM key held outside this library; see authentication and session storage.

The exact public option type is exported as InitOptions from the main package. See the authentication guide for the separate arguments accepted by each login helper.