--- title: Before you try to change something, make sure you can... description: Before making any changes to an existing code, it's important to ensure that the unchanged component can build, deploy, and run properly. This helps verify the... canonical: https://daily.dev/posts/before-you-try-to-change-something-make-sure-you-can-change-nothing-94wum7ujt twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Before you try to change something, make sure you can change nothing | daily.dev og:description: Before making any changes to an existing code, it's important to ensure that the unchanged component can build, deploy, and run properly. This helps verify the... og:url: https://daily.dev/posts/before-you-try-to-change-something-make-sure-you-can-change-nothing-94wum7ujt og:image: https://api.daily.dev/og/posts/94WUM7ujT.png og:image:alt: Before you try to change something, make sure you can change nothing 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. # Before you try to change something, make sure you can change nothing **[Lobsters](https://daily.dev/sources/lobsters)** · 2 min read · 0 upvotes · 0 comments ## Summary Before making any changes to an existing code, it's important to ensure that the unchanged component can build, deploy, and run properly. This helps verify the setup of the development environment and identifies unrelated problems that need troubleshooting. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#testing](https://daily.dev/tags/testing) [View this post on daily.dev](https://daily.dev/posts/before-you-try-to-change-something-make-sure-you-can-change-nothing-94wum7ujt) ```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":"Before you try to change something, make sure you can change nothing","url":"https://daily.dev/posts/before-you-try-to-change-something-make-sure-you-can-change-nothing-94wum7ujt","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/before-you-try-to-change-something-make-sure-you-can-change-nothing-94wum7ujt"},"datePublished":"2024-05-14T12:39:43.733Z","dateModified":"2024-05-14T12:39:43.310Z","description":"Before making any changes to an existing code, it's important to ensure that the unchanged component can build, deploy, and run properly. This helps verify the...","image":"https://media.daily.dev/image/upload/s--0_ODbtD2--/f_auto/v1722860399/public/Placeholder%2008","thumbnailUrl":"https://media.daily.dev/image/upload/s--0_ODbtD2--/f_auto/v1722860399/public/Placeholder%2008","isAccessibleForFree":true,"articleSection":"Lobsters","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":"Organization","name":"Lobsters","logo":"https://media.daily.dev/image/upload/s--tl8v_Fku--/f_auto,t_logo/v1698841318/logos/lobste.jpg","url":"https://daily.dev/sources/lobsters"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/before-you-try-to-change-something-make-sure-you-can-change-nothing-94wum7ujt","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"testing","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Lobsters","item":"https://daily.dev/sources/lobsters"},{"@type":"ListItem","position":3,"name":"Before you try to change something, make sure you can change nothing"}]} ```