Skip to main content

Launch handler

import * as mod from "jsr:@nzip/lofi/recipes/launch-handler";

Opt-in helpers for installed-app launch handling and safe client reuse.

installInstalledAppLaunchConsumer​

function

function installInstalledAppLaunchConsumer(options: InstallLaunchConsumerOptions): InstalledLaunchConsumer

Feature-detect and install one early launch-queue consumer.

The most recently installed consumer owns the queue. Disposing an older development/HMR generation cannot replace the newer consumer; disposing the current owner installs a no-op consumer so stale callbacks stop handling launches.

installInstalledAppLaunchQueueConsumer​

function

function installInstalledAppLaunchQueueConsumer(options: InstallLaunchQueueConsumerOptions): InstalledLaunchConsumer

Feature-detect and install one raw launch-queue consumer.

This is the composition seam used by recipes such as file handling. The most recently installed consumer owns the queue, including across different lofi launch recipes. Treat every delivered parameter as untrusted input.

parseInstalledAppLaunchTarget​

function

function parseInstalledAppLaunchTarget(targetURL: string | undefined, scopeValue: string | URL): InstalledAppLaunchResult

Parse one browser-provided launch URL against an exact origin and path scope.

InstalledAppLaunchIssue​

type

type InstalledAppLaunchIssue = 
  | "missing-target"
  | "invalid-target"
  | "credentialed-target"
  | "outside-origin"
  | "outside-scope";

Stable rejection that never contains the received launch URL.

InstalledAppLaunchParameters​

type

type InstalledAppLaunchParameters = {
  targetURL?: string;
  files?: readonly FileSystemHandle[];
};

Launch data delivered by a browser LaunchQueue.

InstalledAppLaunchQueue​

type

type InstalledAppLaunchQueue = {
  setConsumer(consumer: (parameters: InstalledAppLaunchParameters) => void): void;
};

Minimal browser launch-queue seam used by the recipe.

InstalledAppLaunchResult​

type

type InstalledAppLaunchResult = { ok: true; target: InstalledAppLaunchTarget } | { ok: false; issue: InstalledAppLaunchIssue };

Accepted in-scope launch target or value-free rejection.

InstalledAppLaunchTarget​

type

type InstalledAppLaunchTarget = {
  url: string;
};

A parsed launch URL proven to stay inside the configured application scope.

InstalledLaunchConsumer​

type

type InstalledLaunchConsumer = {
  supported: boolean;
  dispose(): void;
};

Result of feature-detecting and registering the launch consumer.

InstallLaunchConsumerOptions​

type

type InstallLaunchConsumerOptions = {
  scope: string | URL;
  queue?: InstalledAppLaunchQueue;
  onLaunch(target: InstalledAppLaunchTarget): void;
  onRejected?(issue: InstalledAppLaunchIssue): void;
};

Options for registering one launch-queue consumer.

InstallLaunchQueueConsumerOptions​

type

type InstallLaunchQueueConsumerOptions = {
  queue?: InstalledAppLaunchQueue;
  onLaunch(parameters: InstalledAppLaunchParameters): void;
};

Options for registering one raw browser launch-queue consumer.