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wtf is angular-idle-preload?

patrickjs/angular-idle-preload — explained in plain English

Analysis updated 2026-07-18 · repo last pushed 2022-09-25

★ 99TypeScriptAudience · developerComplexity · 2/5DormantSetup · easy

TL;DR

An Angular library that quietly preloads lazy-loaded routes during the browser's idle time, so navigating between app sections feels instant.

Mindmap

mindmap
  root((repo))
    What it does
      Preloads routes in idle time
      Uses requestIdleCallback
      Falls back on old browsers
    Tech stack
      TypeScript
      Angular
      requestIdleCallback
    Use cases
      Multi-tab dashboards
      Faster route navigation
      Smoother lazy loading
    Audience
      Angular developers

Code map

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filefunction / class

Why would anyone build with this?

REASON 1

Preload dashboard tabs like Analytics or Reports in the background so clicking them feels instant

REASON 2

Make an Angular app with many lazy-loaded routes feel more responsive without extra bundling work

REASON 3

Avoid stutter or dropped frames by only preloading during genuinely idle browser time

REASON 4

Support older browsers with a fallback scheduling approach when requestIdleCallback isn't available

What's in the stack?

TypeScriptAngular

How it stacks up

patrickjs/angular-idle-preloadgonemedia/aipointerbrowser-use/browsercode
Stars999897
LanguageTypeScriptTypeScriptTypeScript
Last pushed2022-09-25——
MaintenanceDormant——
Setup difficultyeasyeasymoderate
Complexity2/52/53/5
Audiencedevelopergeneraldeveloper

Figures from each repo's GitHub metadata at analysis time.

How do you spin it up?

Difficulty · easy Time to first run · 5min

Yoink these prompts

Prompt 1
Show me how to install and configure Angular Idle Preload as my router's preloading strategy.
Prompt 2
Explain how this library uses requestIdleCallback to avoid interrupting user interactions.
Prompt 3
What fallback does this library use on browsers that don't support requestIdleCallback?
Prompt 4
Help me verify that my Angular app's lazy routes are being preloaded during idle time with this library.

Frequently asked questions

wtf is angular-idle-preload?

An Angular library that quietly preloads lazy-loaded routes during the browser's idle time, so navigating between app sections feels instant.

What language is angular-idle-preload written in?

Mainly TypeScript. The stack also includes TypeScript, Angular.

Is angular-idle-preload actively maintained?

Dormant — no commits in 2+ years (last push 2022-09-25).

How hard is angular-idle-preload to set up?

Setup difficulty is rated easy, with roughly 5min to a first successful run.

Who is angular-idle-preload for?

Mainly developer.

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