Release Notes for Node.js 14
For use with Node.js 14 LTS
Date of release: 2020-11-03
Chapter 1. Required Infrastructure Component Versions
Red Hat does not provide support for components listed below, with the exception of components explicitly designated as supported.
OpenShift Container Platform (OCP)[a]
1.34.2 or later
2.0 or later
oc command line tool
3.11 or later[c]
[a] OCP is supported by Red Hat
[b] CDK is supported by Red Hat
[c] The version of the
Chapter 2. Features
This section contains information about feature changes introduced in the current release.
2.1. New and Changed features
Node.js 14 LTS has the following new features and enhancements.
2.1.1. Diagnostic report available as stable feature
The diagnostic report functionality is available as a stable feature in Node.js 14 LTS. In earlier releases of Node.js, the functionality was available as Technology Preview.
This feature enables you to generate diagnostic reports for anomalies, such as, performance issues, memory leaks, high CPU usage, and so on. The report is in JSON format. The report uses the first failure data capture (FFDC) technology. This technology captures diagnostic data at the time when the error occurs.
2.1.3. Metering labels for images in Red Hat OpenShift Container Platform
The Node.js images for Red Hat OpenShift Container Platform have labels that enable the use of OpenShift metering. For more information about using metering, see Metering in Red Hat OpenShift Container Platform documentation.
2.1.4. Full ICU (International Components for Unicode) data set is enabled by default
International Components for Unicode (ICU) supports internationalization and globalization of software applications. It provides support for many languages and locales. It simplifies the development and deployment of software applications in all languages.
From Node.js 14 LTS, the
full-icu option is enabled by default. This option enables full ICU data set. For more information about the
full-icu option, see Internationalization support.
In previous releases of Node.js, only English data set was enabled by default. You had to perform additional steps to get and enable support for other locales.
2.1.5. Support for Node.js Runtime on IBM Z
The Red Hat build of Node.js for s390x platform is supported only in OpenShift environments provisioned on IBM Z infrastructure. Running a Node.js application on a stand-alone installation of RHEL on IBM Z is not supported.
New images for products supported on IBM Z are available in the Red Hat Container Catalog.
For more information about deploying Node.js applications on OpenShift provisioned on IBM Z infrastructure, see the section Example applications for Node.js.
2.2. Deprecated features
There are no features deprecated in this release.
2.3. Technology preview
The following features are available as Technology Preview features in Node.js 14 LTS release.
2.3.1. New class for async local storage
AsyncLocalStorage class creates an asynchronous state in callbacks and promise chains. Use the class to store data in these asynchronous states.
2.3.2. WebAssembly System Interface (WASI)
The WebAssembly packages for Node.js improve performance and cross-platform support.
The new WASI APIs provide an implementation of the WebAssembly System Interface specification. Use this interface for sandboxed execution of WebAssembly applications. Using the interface, the applications also get access to the underlying operating system.
2.3.3. Removed the warning message for EcmaScript modules
In earlier releases of Node.js, a warning message was returned when EcmaScript modules were used in the applications. The warning message indicated that the EcmaScript modules are experimental features.
From Node.js 14 LTS onward, the warning message has been removed. However, note that the EcmaScript modules are still available as Technology Preview.
2.4. Supported architectures
Node.js builder images and RPM packages are available and supported for use with the following CPU architectures:
- AMD x86_64
- IBM Z (s390x) in the OpenShift environment
- PowerPC 64-bit Little Endian
Chapter 3. Release components
Chapter 4. Fixed issues
This release incorporates all of the fixed issues in the community release of Node.js 14 LTS.
Chapter 5. Known issues
There are no known issues affecting this release.
Chapter 6. Known issues affecting required infrastructure components
There are no known issues affecting infrastructure components required by this release.