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fela-preset-lusk

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fela-preset-lusk

Fela plugin presets used at Lusk

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Fela Preset Lusk

npm

Fela plugin presets used at Lusk.

Installation

npm install --save fela-preset-lusk

Features

fela-preset-lusk enhances the default Fela behaviour to allow you to write style objects that looks like this:

{
  color: "red",
  onHover: {
    color: "blue",
  },
  atWide: {
    color: "orange",
  }
}

Instead of:

{
  color: "red",
  ":hover": {
    color: "blue",
  },
  "@media (min-width: 40em)": {
    color: "orange",
  }
}

...much more JavaScripty. Note that media query names have to be configured on app-by-app basis. See usage below.

Additionally, all styles are automatically prefixed for optimal cross-browser compatibility. :clap:

Usage

Client-side

import { createRenderer } from "fela";
import luskPreset from "fela-preset-lusk";

const renderer = createRenderer({
  plugins: luskPreset({
    mediaQueries: {
      // Use whatever is appropriate for your app. Query names can be anything,
      // but try to stick to the `atSize` pattern.
      atNarrow: "@media (min-width: 25em)",
      atWide: "@media (min-width: 40em)",
      atVeryWide: "@media (min-width: 78em)",
    },
  }),
});

Server-side

Server side preset differs from the client-side one by using dynamic style prefixer. When supplied userAgent string, (usually from this.headers["user-agent"] when using Koa) it will only prefix declarations that are not supported by the requesting browser. For modern browsers this makes the response extremely lean. :sparkles:

import { createRenderer } from "fela";
import luskPresetServer from "fela-preset-lusk/server";

const renderer = createRenderer({
  plugins: luskPresetServer({
    mediaQueries: {
      // Same as client-side...
      atNarrow: "@media (min-width: 25em)",
      atWide: "@media (min-width: 40em)",
      atVeryWide: "@media (min-width: 78em)",
    },
    prefixer: {
      // Use the user-agent information from the incoming request
      userAgent: "User Agent String"
    },
  }),
});

Combining with other plugins

If you want to add more plugins before or after the preset, spread the array returned from the preset function into another array.

const renderer = createRenderer({
  plugins: [
    pluginBefore(),
    ...luskPreset(),
    pluginAfter(),
  ],
});


If you're interested in more info about Fela plugins, see the official documentation.

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Package last updated on 10 Aug 2017

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