Upgrading Pattern Lab Node

To upgrade the Node version of Pattern Lab do the following:

Version 6 instructions

Ensure that you're using at least Node.js version 14, to which we've upgraded to with !1430
If you haven't migrated from mustache to handlebars engine and templates so far, now would be a good time as mustache has been replaced by handlebars as the default template language with version 5 of pattern lab, and mustache might get removed sooner rather than later. To make a long story short, handlebars is mostly compatible, but more mature than mustache, so a migration shouldn't be too hard, and even beneficial. Additionally using mustache templates most likely won't work anymore starting with this new major version 6 due to these potentially breaking changes for mustache usage:
- Removed styleModifiers with !1452, that haven't been mentioned in the documentation any more anyhow.
- replaced hogan.js by handlebars rendering !1456, that would expect the usage of block helpers instead of typical mustache iterations over objects.
Please explicitly configure your used engine within patternlab-config.json as described within the documentations section https://patternlab.io/docs/editing-the-configuration-options/#heading-engines. The previous way of scanning node_modules folder for pattern engines is deprecated and will be removed with version 7.