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@fluentui/babel-make-styles
Advanced tools
A Babel plugin that performs build time transforms for @fluentui/make-styles
A Babel plugin that performs build time transforms for @fluentui/react-make-styles
.
yarn add @fluentui/babel-make-styles
.babelrc
{
"plugins": ["module:@fluentui/babel-make-styles"]
}
makeStyles()
from custom packagesimport { makeStyles } from 'custom-package';
// 👇 custom import names are also supported
import { createStyles } from 'custom-package';
By default plugin handles imports from @fluentui/react-components
& @fluentui/react-make-styles
, to handle imports from custom packages settings should be tweaked:
{
"plugins": [
[
"module:@fluentui/babel-make-styles",
{
"modules": [{ "moduleSource": "custom-package", "importName": "makeStyles" }]
}
]
]
}
NOTE: "custom-package" should re-export
__styles
function from@fluentui/react-make-styles
If you need to specify custom Babel configuration, you can pass them to babelOptions
. These options will be used by the plugin when parsing and evaluating modules.
{
"plugins": [
[
"module:@fluentui/babel-make-styles",
{
"babelOptions": {
"plugins": ["@babel/plugin-proposal-class-static-block"],
"presets": ["@babel/preset-typescript"]
}
}
]
]
}
{
"plugins": [
[
"module:@fluentui/babel-make-styles",
{
"evaluationRules": []
}
]
]
}
The set of rules that defines how the matched files will be transformed during the evaluation. EvalRule
is an object with two fields:
(path: string) => boolean
Evaluator
function, "ignore" or a name of the module that exports Evaluator
function as a default exportIf test
is omitted, the rule is applicable for all the files.
The last matched rule is used for transformation. If the last matched action for a file is "ignore" the file will be evaluated as is, so that file must not contain any js code that cannot be executed in nodejs environment (it's usually true for any lib in node_modules
).
If you need to compile certain modules under /node_modules/
(which can be the case in monorepo projects), it's recommended to do it on a module by module basis for faster transforms, e.g. ignore: /node_modules[\/\\](?!some-module|other-module)/
.
The default setup is:
module.exports = {
plugins: [
[
'module:@fluentui/babel-make-styles',
{
evaluationRules: [
{
action: require('@linaria/shaker').default,
},
{
test: /[/\\]node_modules[/\\]/,
action: 'ignore',
},
],
},
],
],
};
This plugin is designed to performed build time transforms for @fluentui/react-make-styles
, it supports both ES modules and CommonJS thus can be used in post processing after TypeScript, for example.
Transforms applied by this plugin allow to strip runtime part of makeStyles()
and improve performance.
Transforms
import { makeStyles } from '@fluentui/react-make-styles';
const useStyles = makeStyles({
root: { color: 'red' },
});
roughly to
import { __styles } from '@fluentui/react-make-styles';
const useStyles = __styles({
root: {
/* resolved styles */
},
});
This section focuses mainly on troubleshooting this babel plugin in the microsoft/fluentui repo. However the concepts are not coupled to the repo setup.
The plugin uses tools from linaria to evaluate runtime calls of makeStyles
.
Linaria's debugging documentation can help here. Here are a few examples with building packages with linaria debug output.
Directly from the package
$ DEBUG=linaria\* LINARIA_LOG=debug yarn build
Using Lage from the root of the repo
$ DEBUG=linaria\* LINARIA_LOG=debug yarn lage build --to <package-name>
Using yarn workspace
from the root of the repo
$ DEBUG=linaria\* LINARIA_LOG=debug yarn workspace <package-name> build
On Windows it's required to set environment variables via set
or you can use cross-env
, for example:
$ yarn cross-env DEBUG=linaria\* LINARIA_LOG=debug yarn workspace <package-name> build
The debug output will include:
@linaria/shaker
FAQs
A Babel plugin that performs build time transforms for @fluentui/make-styles
The npm package @fluentui/babel-make-styles receives a total of 0 weekly downloads. As such, @fluentui/babel-make-styles popularity was classified as not popular.
We found that @fluentui/babel-make-styles demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 13 open source maintainers collaborating on the project.
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