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updating the README.md documentation file

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Brian Mulhall
2020-03-14 18:32:38 -05:00
parent b38abd9f45
commit d310e38574
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packages/standard-minifier-js/README.md
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@@ -3,9 +3,25 @@
***
Standard Minifier for JS
===
========================
This package provides a minifier plugin used for Meteor apps by default.
This package provides a minifier plugin used for Meteor apps by default. The behavior
of this plugin during a development build is that all JS files will not be minified,
they will include a source map, and are sent to the client as seperate files. The behavior
during a production build is that all JS files are concatenated into a single, minified JS
file and this file will not include a source map.
The JS minifier uses UglifyJS2. The options include name-mangling and other
commonly used options.
The JS minifier package uses `Terser` version `4.6.6` as of `Meteor` version `1.10.1`. The options
we setting that differ from the default settings are the following:
```
drop_debugger: false
unused: false
safari10: true
```
The rest of the minification options are the default values that `Terser` uses out of the box.
Additionally, we are only making a single pass over the source in order to compress the
output and this could be something we want to increase in the future. JS files are only
minified during a production build and the extra time spent on a second or third pass
may be worth the improved compression.