To install Devtools for React Native, you'll need to use npm or yarn. You can install it by running the command npm install -g @react-native-community/cli or yarn global add @react-native-community/cli.
The @react-native-community/cli package includes the devtools. It's a popular choice among developers.
To install Devtools for DOM, you can use npm or yarn as well. Simply run the command npm install -g react-devtools or yarn global add react-devtools.
This will allow you to inspect the DOM and React components in your browser.
Installation
To install react-devtools, you can use a global install, which is often the most convenient method.
You can install react-devtools globally with a simple command.
If you prefer to avoid global installations, you can add react-devtools as a project dependency.
With Yarn, you can do this by running a specific command.
With NPM, you can use NPX to install react-devtools.
Development and Building
You can build a package file from package sources using the build() function. This allows you to create a binary version of your package.
To build a package, you can use the build() function, which creates a package file from package sources. You can also use the install_* functions to install an R package.
The devtools package provides several functions for building and installing packages. Here are some key functions:
- build() builds a package file from package sources.
- install() reinstalls the package, detaching the currently loaded version then reloading the new version with library().
- install_* functions install an R package.
React Native Usage
If you're using React Native, you'll need to forward ports used by React DevTools if you're not working with a local simulator.
For React Native 0.43 or higher, the simulator should connect within a few seconds. If it doesn't happen automatically, try reloading the React Native app.
Building
Building your R package is a crucial step in the development process. You can use the `install()` function to reinstall a package, detaching the currently loaded version and reloading the new version with `library()`. However, reloading a package is not guaranteed to work, so be sure to check the documentation for `unload()` for caveats.
The `build()` function is a powerful tool for building a package file from package sources. You can use it to build a binary version of your package, making it easily installable on other machines.
Here's a rundown of the key functions you'll need to build and install your package:
- `install()`: reinstalls the package, detaching the currently loaded version and reloading the new version with `library()`.
- `build()`: builds a package file from package sources.
- `install_* functions`: install an R package.
These functions will help you build and install your package, but it's worth noting that `install()` is not guaranteed to work due to the caveats mentioned earlier.
Troubleshooting and Release
You can use check() to update your package's documentation and build it locally, then check its functionality on all systems CRAN uses before submission. This helps catch any issues before you upload to CRAN.
The check() function is a great way to test your package on different systems without having to manually upload and install it each time.
check_win() and check_rhub() are also available for checking your package using win-builder and r-hub respectively. You can use these functions to test your package on different systems before submitting it to CRAN.
release() makes sure everything is okay with your package, including asking you some questions, then builds and uploads it to CRAN.
Check and Release:
The check and release process is a crucial step in getting your package ready for submission to CRAN. You'll want to run check() to update the documentation, then build and check the package locally.
To ensure your package is compatible with all systems used by CRAN, you can also use check_win() to check using win-builder or check_rhub() to check using r-hub. This makes it easy to identify and fix any issues before submission.
Before releasing your package, release() will ask you a series of questions to ensure everything is in order. It will then build and upload your package to CRAN.
Here are the steps involved in the check and release process:
- check() updates the documentation, then builds and checks the package locally.
- check_win() checks a package using win-builder.
- check_rhub() checks a package using r-hub.
- release() makes sure everything is ok with your package, then builds and uploads to CRAN.
Inspecting Component Instances
Inspecting Component Instances is a powerful tool for debugging JavaScript in Chrome. You can inspect the props and state of React components in the browser console.
To do this, select a React component in React DevTools. There is a search box at the top that helps you find one by name.
As soon as you select it, it will be available as $r in the Chrome console. This lets you inspect its props, state, and instance properties.
Learning and Resources
You can find comprehensive guidance on R package development in the book "R Packages", which covers all common parts of package development and uses devtools throughout.
RStudio community is a great place to ask specific questions related to package development, and you can also find valuable resources like rOpenSci packages, which has extensive documentation on best practices for R packages looking to be contributed to rOpenSci.
Writing R Extensions is the exhaustive, canonical reference for writing R packages, maintained by the R core developers.
There are also a number of fantastic blog posts on writing your first package, including those found in the article section.
Here are some essential packages to know about:
- testthat: Writing and running tests (i.e. test()).
- roxygen2: Function and package documentation (i.e. document()).
- remotes: Installing packages (i.e. install_github()).
- pkgbuild: Building binary packages (including checking if build tools are available) (i.e. build()).
- pkgload: Simulating package loading (i.e. load_all()).
- rcmdcheck: Running R CMD check and reporting the results (i.e. check()).
- revdepcheck: Running R CMD check on all reverse dependencies, and figuring out what’s changed since the last CRAN release (i.e. revdep_check()).
- sessioninfo: R session info (i.e. session_info()).
- usethis: Automating package setup (i.e. use_test()).
You can easily load all these development tools with library(devtools).
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