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substituteTailwindAtRules.js
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substituteTailwindAtRules.js
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import _ from 'lodash'
import postcss from 'postcss'
function updateSource(nodes, source) {
return _.tap(Array.isArray(nodes) ? postcss.root({ nodes }) : nodes, (tree) => {
tree.walk((node) => (node.source = source))
})
}
export default function (
_config,
{ base: pluginBase, components: pluginComponents, utilities: pluginUtilities }
) {
return function (css) {
css.walkAtRules('import', (atRule) => {
if (atRule.params === '"tailwindcss/base"' || atRule.params === "'tailwindcss/base'") {
atRule.name = 'tailwind'
atRule.params = 'base'
}
if (
atRule.params === '"tailwindcss/components"' ||
atRule.params === "'tailwindcss/components'"
) {
atRule.name = 'tailwind'
atRule.params = 'components'
}
if (
atRule.params === '"tailwindcss/utilities"' ||
atRule.params === "'tailwindcss/utilities'"
) {
atRule.name = 'tailwind'
atRule.params = 'utilities'
}
if (atRule.params === '"tailwindcss/screens"' || atRule.params === "'tailwindcss/screens'") {
atRule.name = 'tailwind'
atRule.params = 'screens'
}
})
let includesScreensExplicitly = false
const layers = {
base: [],
components: [],
utilities: [],
}
css.walkAtRules('layer', (atRule) => {
if (!['base', 'components', 'utilities'].includes(atRule.params)) {
return
}
layers[atRule.params].push(atRule)
})
css.walkAtRules('tailwind', (atRule) => {
if (atRule.params === 'preflight') {
// prettier-ignore
throw atRule.error("`@tailwind preflight` is not a valid at-rule in Tailwind v2.0, use `@tailwind base` instead.", { word: 'preflight' })
}
if (atRule.params === 'base') {
atRule.after(layers.base)
atRule.after(updateSource(pluginBase, atRule.source))
}
if (atRule.params === 'components') {
atRule.after(layers.components)
atRule.after(updateSource(pluginComponents, atRule.source))
}
if (atRule.params === 'utilities') {
atRule.after(layers.utilities)
atRule.after(updateSource(pluginUtilities, atRule.source))
}
if (atRule.params === 'screens') {
includesScreensExplicitly = true
}
})
if (!includesScreensExplicitly) {
css.append([postcss.atRule({ name: 'tailwind', params: 'screens' })])
}
}
}