Inspect Lit or Polymer webcomponents 'through a prism'. View and modify component properties on the fly through Chrome DevTools.
Lit Prism Extension
Open the developer tools (F12) and select the Lit Prism sidepane from within the Elements panel. Select an HTML element from the Elements panel in order to view its properties. Currently supported webcomponents are LitElement and PolymerElement components.
The list of properties will refresh automatically whenever a property or a subproperty value changes, and the sidepane will keep the current scroll position.
Due to a developer tools limitation the expanded values cannot be re-expanded after updating the property list. In such cases, it might be useful to toggle the \"Automatically refresh property list' switch to 'disabled'.
No data is or will be collected.
Changelog:
v1.2.0 Added support for other types of webcomponents as well, especially for Lit V2 elements. Increased auto refresh interval to 1 second. Grouping webcomponent methods into _FUNCTIONS.
v1.1.1 Minor tweak, added the Lit Message also to arrays, as a first entry, in case it was an array, instead of an object, which contained a circular reference.
v1.1.0 Fixed issue regarding high resource consumption, due to the long process of depth-limited stringification process. Components whose integral list of properties can easily be stringified are returned instantly. For components which contain properties with circular references, the individual data props are analyzed, and only those are truncated, which have circular references. The rest of the props are returned as-is, irrelevant of the depth. An informative message is prepended as a sub-value to the truncated props. Props that are undefined are also listed now, with having the value \"undefined\" as a string.
v1.0.3 Fixed a bug because of which some Polymer properties which were specified in the component's static properties getter were not listed in the sidepane. Swapped the safeStringify method with an alternative one, which supports depth specification, thus, effectively limiting the JSON stringification process, avoiding endless circular references.
v1.0.2 Fixed a bug because of which array properties of Polymer components were not listed in the sidepane.
Marketplace searchable tags:
litelement, lit-element, lit element, polymerelement, polymer-element, polymer element
Source Manifest.json
How to download and manually install Lit Prism extension for Chrome
Looking for a way to install Lit Prism extensions for Chrome, you can search for them in the Chrome Web Store, clicking the "Add to Chrome" button, and following the straightforward process.
However, you may need to install Lit Prism extensions manually, this article outlines two simple methods to effortlessly install Lit Prism extensions, whether they come as unpacked folders in compressed formats like .zip or as .crx files.
Method 1: Download Lit Prism extension and manually install through Drag &Drop
If you ever need to manually install a Lit Prism extension for Chrome, don't worry, it's a simple process. Just follow these easy steps, and you will have your extension ready to use in no time.
Step 1: Download the Lit Prism Extension by clicking the "Download CRX" button on the website.
Look for the Lit Prism extension you wish to install. Go to the website and download the Lit Prism extension package, which is usually a .CRX file and comes in a zipped file. Here ".crx" file is the format for Lit Prism extension that contains all the data.
Step 2: Extract &Arrange Files
Once the file is downloaded, extract that file into its own folder. Similarly, give that extension files a permanent home. In other words, keep it in a folder that you don't accidentally delete it because these files will be needed to make that extension work.
Step 3: Go to the Chrome Extensions Page
Open Google Chrome and in the address bar, type chrome://extensions; it will open the Google Chrome extensions page. Make sure that "My extensions" is selected in the sidebar.
Step 4: Drag and Drop the Extension
Now, go to the folder where you extracted the Lit Prism extension and drag &drop the extension file from there anywhere onto the extension page within Google Chrome.
Step 5: Complete the Installation
Once you drag and drop the extension file, follow the steps that Google Chrome takes you through. Similarly, if the extension file is of .crx file format, you will be required to review the permissions and then add the extension.
Now, you can manage that added extension as you would like to with any other Chrome extension that you added through Chrome Webstore. Its icon will also appear in the Google Chrome Menu on the right side of the address bar once you activate it.
Method 2: Download Lit Prism extension for Chrome and install in Developer Mode
This is another method to install Lit Prism extension manually, but the twist is that here, you install by enabling the developer mode option provided in Google Chrome. This mode is commonly used for testing extensions or running unpublished tools.
Step 1: Download the Lit Prism extension file
Select and download the Lit Prism extension by clicking the 'Download CRX' button on the website.
Step 2: Extract the downloaded contents
Convert the file to a ZIP file if it is in CRX format then extract the Lit Prism extension zip file or folder that you downloaded. Make sure you extract it using the same folder name and keep it safely in another folder, so you don't delete it by mistake. The extracted folder will be needed to keep your Lit Prism extension running.
Step 3: Open Chrome Extension Setting Page
In the address bar of Google Chrome, type chrome://extensions and open the Chrome Extension Page.
Step 4: Enable Developer Mode
After opening the Chrome Extension page, look at the top right side, and you will find the toggle option of "Developer mode."Simply enable that developer mode option.
Step 5: Load the Unpacked Extension
Once you enable the developer mode option, you will see the menu of Load Unpacked, Pack Extensions and Update. From that, select the option "Load unpacked."
Step 6: Select the Extension Folder
Once the pop-up opens upon clicking Load unpacked, select the Lit Prism extension directory and click on the "Select Folder "button.
Step 7: Confirm and Install
After you select an extension folder of a Google Chrome extension you're installing manually, confirm its installation for the final time and let the installation complete.
Conclusion
Here we've made a step-by-step guide on How to manually install Lit Prism extension in 2 ways. We hope this guide proves helpful.
Similar Extensions
Web Component DevTools 653 9 ★ 1.74MiB
Vue.js devtools 653 43 ★ 2.08MiB
tweak: mock and modify HTTP requests 653 190 ★ 3.22MiB
Angular state inspector 653 64 ★ 36.35KiB
axe DevTools - Web Accessibility Testing 653 114 ★ 2.89MiB
Custom Elements Locator 653 3 ★ 3.46MiB
PolySearch 653 5 ★ 19.17KiB
Preact Developer Tools 653 11 ★ 147KiB
Vue.js devtools (beta) 653 149 ★ 2.54MiB
GraphQL developer tools 653 24 ★ 98.19KiB
Vue force dev 653 35 ★ 38.0KiB
Polymer Ready 653 15 ★ 14.71KiB
Angular DevTools 653 159 ★ 3.2MiB
MobX Developer Tools 653 51 ★ 682KiB
Solid Devtools 653 7 ★ 123KiB
Alpine.js devtools 653 34 ★ 67.78KiB
Svelte DevTools+ 653 5 ★ 267KiB
ARIA DevTools 653 32 ★ 491KiB
AngularJS Inspect Watchers 653 21 ★ 35.49KiB
Svelte DevTools 653 19 ★ 58.61KiB
CSS Stacking Context inspector 653 21 ★ 262KiB
ng-inspect for AngularJS 653 87 ★ 585KiB
Ember Inspector 653 345 ★ 3.49MiB
Svelte Reactive Debugger 653 0 ★ 216KiB
User reviews
Vlad Timofte (ID: 0000003ce8447a48) Voted 5 ★ - Updated 11/10/2023
Elisa Olalde (ID: 0000006b0cdd41e1) Voted 5 ★ - Updated 01/25/2022
Cristian “Skynetwasbetter” I (ID: 000000082624a113) Voted 5 ★ - Updated 01/25/2022
Anduel Pitushi (ID: 00000077c80101f6) Voted 5 ★ - Updated 08/17/2021
Rares Ghinga (ID: 000000d7c4bae6d4) Voted 5 ★ - Updated 08/17/2021