This means we must use a version of Node.js that has support for ES modules in order to use this package.įor our own code, we can show Node.js that all modules in our project are ES modules by adding "type": "module" in our package.json, or we can set the file extension of individual scripts to. ECMAScript Modules (ESM): uses export to export functions and objects and import to load them in another moduleĮxeca becomes a pure ESM package with its v6.0.0 release.
CommonJS Modules (CJS): uses module.exports to export functions and objects and require() to load them in another module.Node.js supports two different module types: Using a pure ES module package in Node.js
RUNJS ALTERNATIVES INSTALL
Next, install the execa library: npm install execa Now, let’s create a new package.json file: npm init -yes Open up your terminal and create a new directory named tutorial, then change into that directory: mkdir tutorial It uses the popular cross-spawn package, which works around known issues with Node.js’ child_process.spawn method on Windows. Execa takes care of child process clean-up for us automatically, ensuring we don’t end up with “zombie” processes.Īnother benefit of using execa is that it brings its support for running child processes with Node.js on Windows. We probably don’t want child processes hanging around if the process that is executing our script ( node) dies for any reason. This is convenient for readability on the command line, but not helpful in a scripting context, so execa automatically strips these new lines for us by default. It’s common for programs to include a new line at the end of their output. For example, if we’re passing a string with spaces or quotes, execa will take care of escaping them for us. If we need it, there is also an execaSync method for running commands synchronously.Įxeca also conveniently escapes and quotes any command arguments that we pass to it.
RUNJS ALTERNATIVES CODE
This means we can use async/await in our code instead of needing to create callback functions as we do with the asynchronous child_process module methods. There are several benefits that execa provides over the built-in Node.js child_process module.įirst, execa exposes a promise-based API.
RUNJS ALTERNATIVES WINDOWS
Node.js has a built-in child_process module. He's on Twitter at if you'd like to say hi. He helps developers level up with Node.js at. That's it! You've successfully located your JavaScript code that Retool runs.Simon Plenderleith Follow Simon is an independent Node.js consultant and educator.
For example, if I have a query named query2 in Retool I would search for query2.js. Once the search bar has opened, search for. Search for the file: Cmd + P (on Mac) or Ctrl + P (on Windows). You will not be able to find your JavaScript unless you have run it previously. This allows Retool to tell chrome to keep track of the JavaScript code and assign it to a specific file name. Make sure your query or transformer has run at least once since page load. As an alternative, you can right-click on the webpage and click "Inspect" to open the developer console. To open the console in Chrome, use this keyboard shortcut: Cmd + Option + J (on a Mac) or Ctrl + Shift + J (on Windows).We're going to use chrome for this example so the keybinding may differ from browser to browser, but the ideas will work. The first thing we need to do is open up our developer tools. Let's say we have a Run JS Code query named query2. Upload multiple files through a GCS / S3 resource.
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