--- title: How to control global objects in Angular. | daily.dev description: A practical guide on how to avoid using raw global objects in Angular by wrapping external libraries (using Leaflet as an example) with Angular's... canonical: https://daily.dev/posts/how-to-control-global-objects-in-angular--ajmutpymk twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: How to control global objects in Angular. | daily.dev og:description: A practical guide on how to avoid using raw global objects in Angular by wrapping external libraries (using Leaflet as an example) with Angular's... og:url: https://daily.dev/posts/how-to-control-global-objects-in-angular--ajmutpymk og:image: https://api.daily.dev/og/posts/ajmuTPYMk.png og:image:alt: How to control global objects in Angular. og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # How to control global objects in Angular. **[Playful Programming](https://daily.dev/sources/playfulprogramming)** · [@danywalls](https://daily.dev/danywalls) · 3 min read · 0 upvotes · 0 comments ## Summary A practical guide on how to avoid using raw global objects in Angular by wrapping external libraries (using Leaflet as an example) with Angular's InjectionToken and @Inject decorator. The tutorial covers installing Leaflet, defining a TypeScript interface for its API, creating an InjectionToken, registering it in AppModule providers, and injecting it into a service via @Inject — enabling cleaner, more testable code. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Angular Dependency Injection Is a Tree Search, Not Magic](https://daily.dev/posts/angular-dependency-injection-is-a-tree-search-not-magic-om4axsm1e) · Medium · 3 upvotes · 0 comments - [Angular’s New injectAsync\(\) API Explained](https://daily.dev/posts/angular-s-new-injectasync-api-explained-aqo0mdr2h) · ITNEXT · 1 upvotes · 0 comments - [Build a Dependency Injection Container in Vanilla JavaScript](https://daily.dev/posts/build-a-dependency-injection-container-in-vanilla-javascript-9lfm4wjy6) · JS Dev Space · 3 upvotes · 0 comments - [ViewChild in Angular: Components, Directives, and DOM Elements](https://daily.dev/posts/viewchild-in-angular-components-directives-and-dom-elements-wnxgphafd) · DigitalOcean Community · 0 upvotes · 0 comments - [NestJS Dependency Injection: Source Code, Type Erasure Hacks, and Building Your Own IoC Container from Scratch](https://daily.dev/posts/nestjs-dependency-injection-source-code-type-erasure-hacks-and-building-your-own-ioc-container-fr-74fnlhzd6) · Medium · 0 upvotes · 0 comments --- Tags: [#webdev](https://daily.dev/tags/webdev), [#javascript](https://daily.dev/tags/javascript), [#angular](https://daily.dev/tags/angular), [#dependency-injection](https://daily.dev/tags/dependency-injection) [View this post on daily.dev](https://daily.dev/posts/how-to-control-global-objects-in-angular--ajmutpymk) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"How to control global objects in Angular.","url":"https://daily.dev/posts/how-to-control-global-objects-in-angular--ajmutpymk","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/how-to-control-global-objects-in-angular--ajmutpymk"},"datePublished":"2026-03-16T21:47:07.599Z","dateModified":"2026-03-17T18:00:28.638Z","description":"A practical guide on how to avoid using raw global objects in Angular by wrapping external libraries (using Leaflet as an example) with Angular's...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/410880cc2be7879b17fe4710fc4917c6?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/410880cc2be7879b17fe4710fc4917c6?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Playful Programming","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Person","name":"Dany Paredes","url":"https://daily.dev/danywalls","image":"https://avatars.githubusercontent.com/u/5494535?v=4","interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"EndorseAction"},"userInteractionCount":80}},"commentCount":0,"discussionUrl":"https://daily.dev/posts/how-to-control-global-objects-in-angular--ajmutpymk","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"webdev,javascript,angular,dependency-injection","timeRequired":"PT3M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Playful Programming","item":"https://daily.dev/sources/playfulprogramming"},{"@type":"ListItem","position":3,"name":"How to control global objects in Angular."}]} ```