mirror of
https://github.com/tailwindlabs/tailwindcss.git
synced 2025-12-08 21:36:08 +00:00
5f49e53aba
* ignore content files that don't exist PostCSS CLI will give you a fake file path that ends in /stdin if you are reading from stdin. * update changelog
842 lines
24 KiB
JavaScript
842 lines
24 KiB
JavaScript
import fs from 'fs'
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import url from 'url'
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import postcss from 'postcss'
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import dlv from 'dlv'
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import selectorParser from 'postcss-selector-parser'
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import transformThemeValue from '../util/transformThemeValue'
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import parseObjectStyles from '../util/parseObjectStyles'
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import prefixSelector from '../util/prefixSelector'
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import isPlainObject from '../util/isPlainObject'
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import escapeClassName from '../util/escapeClassName'
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import nameClass, { formatClass } from '../util/nameClass'
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import { coerceValue } from '../util/pluginUtils'
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import bigSign from '../util/bigSign'
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import { variantPlugins, corePlugins } from '../corePlugins'
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import * as sharedState from './sharedState'
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import { env } from './sharedState'
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import { toPath } from '../util/toPath'
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import log from '../util/log'
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import negateValue from '../util/negateValue'
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import isValidArbitraryValue from '../util/isValidArbitraryValue'
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function parseVariantFormatString(input) {
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if (input.includes('{')) {
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if (!isBalanced(input)) throw new Error(`Your { and } are unbalanced.`)
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return input
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.split(/{(.*)}/gim)
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.flatMap((line) => parseVariantFormatString(line))
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.filter(Boolean)
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}
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return [input.trim()]
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}
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function isBalanced(input) {
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let count = 0
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for (let char of input) {
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if (char === '{') {
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count++
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} else if (char === '}') {
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if (--count < 0) {
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return false // unbalanced
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}
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}
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}
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return count === 0
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}
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function insertInto(list, value, { before = [] } = {}) {
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before = [].concat(before)
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if (before.length <= 0) {
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list.push(value)
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return
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}
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let idx = list.length - 1
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for (let other of before) {
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let iidx = list.indexOf(other)
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if (iidx === -1) continue
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idx = Math.min(idx, iidx)
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}
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list.splice(idx, 0, value)
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}
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function parseStyles(styles) {
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if (!Array.isArray(styles)) {
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return parseStyles([styles])
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}
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return styles.flatMap((style) => {
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let isNode = !Array.isArray(style) && !isPlainObject(style)
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return isNode ? style : parseObjectStyles(style)
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})
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}
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function getClasses(selector) {
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let parser = selectorParser((selectors) => {
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let allClasses = []
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selectors.walkClasses((classNode) => {
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allClasses.push(classNode.value)
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})
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return allClasses
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})
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return parser.transformSync(selector)
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}
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function extractCandidates(node) {
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let classes = []
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if (node.type === 'rule') {
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for (let selector of node.selectors) {
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let classCandidates = getClasses(selector)
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// At least one of the selectors contains non-"on-demandable" candidates.
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if (classCandidates.length === 0) return []
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classes = [...classes, ...classCandidates]
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}
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return classes
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}
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if (node.type === 'atrule') {
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node.walkRules((rule) => {
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classes = [...classes, ...rule.selectors.flatMap((selector) => getClasses(selector))]
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})
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}
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return classes
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}
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function withIdentifiers(styles) {
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return parseStyles(styles).flatMap((node) => {
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let nodeMap = new Map()
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let candidates = extractCandidates(node)
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// If this isn't "on-demandable", assign it a universal candidate.
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if (candidates.length === 0) {
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return [['*', node]]
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}
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return candidates.map((c) => {
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if (!nodeMap.has(node)) {
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nodeMap.set(node, node)
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}
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return [c, nodeMap.get(node)]
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})
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})
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}
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function buildPluginApi(tailwindConfig, context, { variantList, variantMap, offsets, classList }) {
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function getConfigValue(path, defaultValue) {
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return path ? dlv(tailwindConfig, path, defaultValue) : tailwindConfig
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}
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function applyConfiguredPrefix(selector) {
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return prefixSelector(tailwindConfig.prefix, selector)
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}
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function prefixIdentifier(identifier, options) {
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if (identifier === '*') {
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return '*'
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}
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if (!options.respectPrefix) {
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return identifier
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}
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return context.tailwindConfig.prefix + identifier
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}
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return {
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addVariant(variantName, variantFunctions, options = {}) {
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variantFunctions = [].concat(variantFunctions).map((variantFunction) => {
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if (typeof variantFunction !== 'string') {
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// Safelist public API functions
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return ({ modifySelectors, container, separator }) => {
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return variantFunction({ modifySelectors, container, separator })
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}
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}
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variantFunction = variantFunction
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.replace(/\n+/g, '')
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.replace(/\s{1,}/g, ' ')
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.trim()
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let fns = parseVariantFormatString(variantFunction)
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.map((str) => {
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if (!str.startsWith('@')) {
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return ({ format }) => format(str)
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}
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let [, name, params] = /@(.*?) (.*)/g.exec(str)
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return ({ wrap }) => wrap(postcss.atRule({ name, params }))
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})
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.reverse()
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return (api) => {
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for (let fn of fns) {
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fn(api)
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}
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}
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})
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insertInto(variantList, variantName, options)
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variantMap.set(variantName, variantFunctions)
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},
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postcss,
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prefix: applyConfiguredPrefix,
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e: escapeClassName,
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config: getConfigValue,
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theme(path, defaultValue) {
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const [pathRoot, ...subPaths] = toPath(path)
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const value = getConfigValue(['theme', pathRoot, ...subPaths], defaultValue)
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return transformThemeValue(pathRoot)(value)
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},
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corePlugins: (path) => {
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if (Array.isArray(tailwindConfig.corePlugins)) {
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return tailwindConfig.corePlugins.includes(path)
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}
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return getConfigValue(['corePlugins', path], true)
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},
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variants: () => {
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// Preserved for backwards compatibility but not used in v3.0+
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return []
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},
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addUserCss(userCss) {
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for (let [identifier, rule] of withIdentifiers(userCss)) {
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let offset = offsets.user++
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if (!context.candidateRuleMap.has(identifier)) {
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context.candidateRuleMap.set(identifier, [])
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}
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context.candidateRuleMap.get(identifier).push([{ sort: offset, layer: 'user' }, rule])
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}
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},
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addBase(base) {
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for (let [identifier, rule] of withIdentifiers(base)) {
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let prefixedIdentifier = prefixIdentifier(identifier, {})
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let offset = offsets.base++
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if (!context.candidateRuleMap.has(prefixedIdentifier)) {
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context.candidateRuleMap.set(prefixedIdentifier, [])
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}
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context.candidateRuleMap
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.get(prefixedIdentifier)
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.push([{ sort: offset, layer: 'base' }, rule])
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}
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},
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/**
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* @param {string} group
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* @param {Record<string, string | string[]>} declarations
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*/
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addDefaults(group, declarations) {
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const groups = {
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[`@defaults ${group}`]: declarations,
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}
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for (let [identifier, rule] of withIdentifiers(groups)) {
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let prefixedIdentifier = prefixIdentifier(identifier, {})
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let offset = offsets.base++
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if (!context.candidateRuleMap.has(prefixedIdentifier)) {
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context.candidateRuleMap.set(prefixedIdentifier, [])
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}
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context.candidateRuleMap
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.get(prefixedIdentifier)
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.push([{ sort: offset, layer: 'defaults' }, rule])
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}
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},
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addComponents(components, options) {
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let defaultOptions = {
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respectPrefix: true,
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respectImportant: false,
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}
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options = Object.assign({}, defaultOptions, Array.isArray(options) ? {} : options)
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for (let [identifier, rule] of withIdentifiers(components)) {
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let prefixedIdentifier = prefixIdentifier(identifier, options)
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let offset = offsets.components++
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classList.add(prefixedIdentifier)
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if (!context.candidateRuleMap.has(prefixedIdentifier)) {
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context.candidateRuleMap.set(prefixedIdentifier, [])
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}
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context.candidateRuleMap
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.get(prefixedIdentifier)
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.push([{ sort: offset, layer: 'components', options }, rule])
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}
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},
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addUtilities(utilities, options) {
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let defaultOptions = {
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respectPrefix: true,
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respectImportant: true,
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}
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options = Object.assign({}, defaultOptions, Array.isArray(options) ? {} : options)
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for (let [identifier, rule] of withIdentifiers(utilities)) {
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let prefixedIdentifier = prefixIdentifier(identifier, options)
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let offset = offsets.utilities++
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classList.add(prefixedIdentifier)
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if (!context.candidateRuleMap.has(prefixedIdentifier)) {
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context.candidateRuleMap.set(prefixedIdentifier, [])
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}
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context.candidateRuleMap
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.get(prefixedIdentifier)
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.push([{ sort: offset, layer: 'utilities', options }, rule])
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}
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},
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matchUtilities: function (utilities, options) {
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let defaultOptions = {
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respectPrefix: true,
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respectImportant: true,
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}
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options = { ...defaultOptions, ...options }
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let offset = offsets.utilities++
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for (let identifier in utilities) {
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let prefixedIdentifier = prefixIdentifier(identifier, options)
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let rule = utilities[identifier]
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classList.add([prefixedIdentifier, options])
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function wrapped(modifier, { isOnlyPlugin }) {
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let { type = 'any' } = options
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type = [].concat(type)
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let [value, coercedType] = coerceValue(type, modifier, options, tailwindConfig)
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if (value === undefined) {
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return []
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}
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if (!type.includes(coercedType) && !isOnlyPlugin) {
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return []
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}
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if (!isValidArbitraryValue(value)) {
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return []
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}
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let ruleSets = []
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.concat(rule(value))
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.filter(Boolean)
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.map((declaration) => ({
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[nameClass(identifier, modifier)]: declaration,
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}))
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return ruleSets
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}
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let withOffsets = [{ sort: offset, layer: 'utilities', options }, wrapped]
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if (!context.candidateRuleMap.has(prefixedIdentifier)) {
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context.candidateRuleMap.set(prefixedIdentifier, [])
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}
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context.candidateRuleMap.get(prefixedIdentifier).push(withOffsets)
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}
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},
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matchComponents: function (components, options) {
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let defaultOptions = {
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respectPrefix: true,
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respectImportant: false,
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}
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options = { ...defaultOptions, ...options }
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let offset = offsets.components++
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for (let identifier in components) {
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let prefixedIdentifier = prefixIdentifier(identifier, options)
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let rule = components[identifier]
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classList.add([prefixedIdentifier, options])
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function wrapped(modifier, { isOnlyPlugin }) {
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let { type = 'any' } = options
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type = [].concat(type)
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let [value, coercedType] = coerceValue(type, modifier, options, tailwindConfig)
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if (value === undefined) {
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return []
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}
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if (!type.includes(coercedType)) {
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if (isOnlyPlugin) {
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log.warn([
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`Unnecessary typehint \`${coercedType}\` in \`${identifier}-${modifier}\`.`,
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`You can safely update it to \`${identifier}-${modifier.replace(
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coercedType + ':',
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''
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)}\`.`,
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])
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} else {
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return []
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}
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}
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if (!isValidArbitraryValue(value)) {
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return []
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}
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let ruleSets = []
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.concat(rule(value))
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.filter(Boolean)
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.map((declaration) => ({
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[nameClass(identifier, modifier)]: declaration,
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}))
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return ruleSets
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}
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let withOffsets = [{ sort: offset, layer: 'components', options }, wrapped]
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if (!context.candidateRuleMap.has(prefixedIdentifier)) {
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context.candidateRuleMap.set(prefixedIdentifier, [])
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}
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context.candidateRuleMap.get(prefixedIdentifier).push(withOffsets)
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}
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},
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}
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}
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let fileModifiedMapCache = new WeakMap()
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export function getFileModifiedMap(context) {
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if (!fileModifiedMapCache.has(context)) {
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fileModifiedMapCache.set(context, new Map())
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}
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return fileModifiedMapCache.get(context)
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}
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function trackModified(files, fileModifiedMap) {
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let changed = false
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for (let file of files) {
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if (!file) continue
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let parsed = url.parse(file)
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let pathname = parsed.hash ? parsed.href.replace(parsed.hash, '') : parsed.href
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pathname = parsed.search ? pathname.replace(parsed.search, '') : pathname
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let newModified = fs.statSync(decodeURIComponent(pathname), { throwIfNoEntry: false })?.mtimeMs
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if (!newModified) {
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// It could happen that a file is passed in that doesn't exist. E.g.:
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// postcss-cli will provide you a fake path when reading from stdin. This
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// path then looks like /path-to-your-project/stdin In that case we just
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// want to ignore it and don't track changes at all.
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continue
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}
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if (!fileModifiedMap.has(file) || newModified > fileModifiedMap.get(file)) {
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changed = true
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}
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fileModifiedMap.set(file, newModified)
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}
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return changed
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}
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function extractVariantAtRules(node) {
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node.walkAtRules((atRule) => {
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if (['responsive', 'variants'].includes(atRule.name)) {
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extractVariantAtRules(atRule)
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atRule.before(atRule.nodes)
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atRule.remove()
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}
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})
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}
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function collectLayerPlugins(root) {
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let layerPlugins = []
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root.each((node) => {
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if (node.type === 'atrule' && ['responsive', 'variants'].includes(node.name)) {
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node.name = 'layer'
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node.params = 'utilities'
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}
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})
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// Walk @layer rules and treat them like plugins
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root.walkAtRules('layer', (layerRule) => {
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extractVariantAtRules(layerRule)
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if (layerRule.params === 'base') {
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for (let node of layerRule.nodes) {
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layerPlugins.push(function ({ addBase }) {
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addBase(node, { respectPrefix: false })
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})
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}
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layerRule.remove()
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} else if (layerRule.params === 'components') {
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for (let node of layerRule.nodes) {
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layerPlugins.push(function ({ addComponents }) {
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addComponents(node, { respectPrefix: false })
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})
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}
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layerRule.remove()
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} else if (layerRule.params === 'utilities') {
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for (let node of layerRule.nodes) {
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layerPlugins.push(function ({ addUtilities }) {
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addUtilities(node, { respectPrefix: false })
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})
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}
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layerRule.remove()
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}
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})
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root.walkRules((rule) => {
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// At this point it is safe to include all the left-over css from the
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// user's css file. This is because the `@tailwind` and `@layer` directives
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// will already be handled and will be removed from the css tree.
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layerPlugins.push(function ({ addUserCss }) {
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addUserCss(rule, { respectPrefix: false })
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})
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})
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return layerPlugins
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}
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function resolvePlugins(context, root) {
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let corePluginList = Object.entries({ ...variantPlugins, ...corePlugins })
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.map(([name, plugin]) => {
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if (!context.tailwindConfig.corePlugins.includes(name)) {
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return null
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}
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return plugin
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})
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.filter(Boolean)
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let userPlugins = context.tailwindConfig.plugins.map((plugin) => {
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if (plugin.__isOptionsFunction) {
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plugin = plugin()
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}
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return typeof plugin === 'function' ? plugin : plugin.handler
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})
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let layerPlugins = collectLayerPlugins(root)
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// TODO: This is a workaround for backwards compatibility, since custom variants
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// were historically sorted before screen/stackable variants.
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let beforeVariants = [
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variantPlugins['pseudoElementVariants'],
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variantPlugins['pseudoClassVariants'],
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]
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let afterVariants = [
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variantPlugins['directionVariants'],
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variantPlugins['reducedMotionVariants'],
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variantPlugins['darkVariants'],
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variantPlugins['printVariant'],
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variantPlugins['screenVariants'],
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variantPlugins['orientationVariants'],
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]
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return [...corePluginList, ...beforeVariants, ...userPlugins, ...afterVariants, ...layerPlugins]
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}
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function registerPlugins(plugins, context) {
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let variantList = []
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let variantMap = new Map()
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let offsets = {
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defaults: 0n,
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base: 0n,
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components: 0n,
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utilities: 0n,
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user: 0n,
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}
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let classList = new Set()
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let pluginApi = buildPluginApi(context.tailwindConfig, context, {
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variantList,
|
|
variantMap,
|
|
offsets,
|
|
classList,
|
|
})
|
|
|
|
for (let plugin of plugins) {
|
|
if (Array.isArray(plugin)) {
|
|
for (let pluginItem of plugin) {
|
|
pluginItem(pluginApi)
|
|
}
|
|
} else {
|
|
plugin?.(pluginApi)
|
|
}
|
|
}
|
|
|
|
let highestOffset = ((args) => args.reduce((m, e) => (e > m ? e : m)))([
|
|
offsets.base,
|
|
offsets.defaults,
|
|
offsets.components,
|
|
offsets.utilities,
|
|
offsets.user,
|
|
])
|
|
let reservedBits = BigInt(highestOffset.toString(2).length)
|
|
|
|
// A number one less than the top range of the highest offset area
|
|
// so arbitrary properties are always sorted at the end.
|
|
context.arbitraryPropertiesSort = ((1n << reservedBits) << 0n) - 1n
|
|
|
|
context.layerOrder = {
|
|
defaults: (1n << reservedBits) << 0n,
|
|
base: (1n << reservedBits) << 1n,
|
|
components: (1n << reservedBits) << 2n,
|
|
utilities: (1n << reservedBits) << 3n,
|
|
user: (1n << reservedBits) << 4n,
|
|
}
|
|
|
|
reservedBits += 5n
|
|
|
|
let offset = 0
|
|
context.variantOrder = new Map(
|
|
variantList
|
|
.map((variant, i) => {
|
|
let variantFunctions = variantMap.get(variant).length
|
|
let bits = (1n << BigInt(i + offset)) << reservedBits
|
|
offset += variantFunctions - 1
|
|
return [variant, bits]
|
|
})
|
|
.sort(([, a], [, z]) => bigSign(a - z))
|
|
)
|
|
|
|
context.minimumScreen = [...context.variantOrder.values()].shift()
|
|
|
|
// Build variantMap
|
|
for (let [variantName, variantFunctions] of variantMap.entries()) {
|
|
let sort = context.variantOrder.get(variantName)
|
|
context.variantMap.set(
|
|
variantName,
|
|
variantFunctions.map((variantFunction, idx) => [sort << BigInt(idx), variantFunction])
|
|
)
|
|
}
|
|
|
|
let safelist = (context.tailwindConfig.safelist ?? []).filter(Boolean)
|
|
if (safelist.length > 0) {
|
|
let checks = []
|
|
|
|
for (let value of safelist) {
|
|
if (typeof value === 'string') {
|
|
context.changedContent.push({ content: value, extension: 'html' })
|
|
continue
|
|
}
|
|
|
|
if (value instanceof RegExp) {
|
|
log.warn('root-regex', [
|
|
'Regular expressions in `safelist` work differently in Tailwind CSS v3.0.',
|
|
'Update your `safelist` configuration to eliminate this warning.',
|
|
// TODO: Add https://tw.wtf/regex-safelist
|
|
])
|
|
continue
|
|
}
|
|
|
|
checks.push(value)
|
|
}
|
|
|
|
if (checks.length > 0) {
|
|
let patternMatchingCount = new Map()
|
|
|
|
for (let util of classList) {
|
|
let utils = Array.isArray(util)
|
|
? (() => {
|
|
let [utilName, options] = util
|
|
let classes = Object.keys(options?.values ?? {}).map((value) =>
|
|
formatClass(utilName, value)
|
|
)
|
|
|
|
if (options?.supportsNegativeValues) {
|
|
classes = [...classes, ...classes.map((cls) => '-' + cls)]
|
|
}
|
|
|
|
return classes
|
|
})()
|
|
: [util]
|
|
|
|
for (let util of utils) {
|
|
for (let { pattern, variants = [] } of checks) {
|
|
// RegExp with the /g flag are stateful, so let's reset the last
|
|
// index pointer to reset the state.
|
|
pattern.lastIndex = 0
|
|
|
|
if (!patternMatchingCount.has(pattern)) {
|
|
patternMatchingCount.set(pattern, 0)
|
|
}
|
|
|
|
if (!pattern.test(util)) continue
|
|
|
|
patternMatchingCount.set(pattern, patternMatchingCount.get(pattern) + 1)
|
|
|
|
context.changedContent.push({ content: util, extension: 'html' })
|
|
for (let variant of variants) {
|
|
context.changedContent.push({
|
|
content: variant + context.tailwindConfig.separator + util,
|
|
extension: 'html',
|
|
})
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
for (let [regex, count] of patternMatchingCount.entries()) {
|
|
if (count !== 0) continue
|
|
|
|
log.warn([
|
|
`The safelist pattern \`${regex}\` doesn't match any Tailwind CSS classes.`,
|
|
'Fix this pattern or remove it from your `safelist` configuration.',
|
|
])
|
|
}
|
|
}
|
|
}
|
|
|
|
// Generate a list of strings for autocompletion purposes, e.g.
|
|
// ['uppercase', 'lowercase', ...]
|
|
context.getClassList = function () {
|
|
let output = []
|
|
|
|
for (let util of classList) {
|
|
if (Array.isArray(util)) {
|
|
let [utilName, options] = util
|
|
let negativeClasses = []
|
|
|
|
for (let [key, value] of Object.entries(options?.values ?? {})) {
|
|
output.push(formatClass(utilName, key))
|
|
if (options?.supportsNegativeValues && negateValue(value)) {
|
|
negativeClasses.push(formatClass(utilName, `-${key}`))
|
|
}
|
|
}
|
|
|
|
output.push(...negativeClasses)
|
|
} else {
|
|
output.push(util)
|
|
}
|
|
}
|
|
|
|
return output
|
|
}
|
|
}
|
|
|
|
export function createContext(tailwindConfig, changedContent = [], root = postcss.root()) {
|
|
let context = {
|
|
disposables: [],
|
|
ruleCache: new Set(),
|
|
classCache: new Map(),
|
|
applyClassCache: new Map(),
|
|
notClassCache: new Set(),
|
|
postCssNodeCache: new Map(),
|
|
candidateRuleMap: new Map(),
|
|
tailwindConfig,
|
|
changedContent: changedContent,
|
|
variantMap: new Map(),
|
|
stylesheetCache: null,
|
|
}
|
|
|
|
let resolvedPlugins = resolvePlugins(context, root)
|
|
registerPlugins(resolvedPlugins, context)
|
|
|
|
return context
|
|
}
|
|
|
|
let contextMap = sharedState.contextMap
|
|
let configContextMap = sharedState.configContextMap
|
|
let contextSourcesMap = sharedState.contextSourcesMap
|
|
|
|
export function getContext(
|
|
root,
|
|
result,
|
|
tailwindConfig,
|
|
userConfigPath,
|
|
tailwindConfigHash,
|
|
contextDependencies
|
|
) {
|
|
let sourcePath = result.opts.from
|
|
let isConfigFile = userConfigPath !== null
|
|
|
|
env.DEBUG && console.log('Source path:', sourcePath)
|
|
|
|
let existingContext
|
|
|
|
if (isConfigFile && contextMap.has(sourcePath)) {
|
|
existingContext = contextMap.get(sourcePath)
|
|
} else if (configContextMap.has(tailwindConfigHash)) {
|
|
let context = configContextMap.get(tailwindConfigHash)
|
|
contextSourcesMap.get(context).add(sourcePath)
|
|
contextMap.set(sourcePath, context)
|
|
|
|
existingContext = context
|
|
}
|
|
|
|
// If there's already a context in the cache and we don't need to
|
|
// reset the context, return the cached context.
|
|
if (existingContext) {
|
|
let contextDependenciesChanged = trackModified(
|
|
[...contextDependencies],
|
|
getFileModifiedMap(existingContext)
|
|
)
|
|
if (!contextDependenciesChanged) {
|
|
return [existingContext, false]
|
|
}
|
|
}
|
|
|
|
// If this source is in the context map, get the old context.
|
|
// Remove this source from the context sources for the old context,
|
|
// and clean up that context if no one else is using it. This can be
|
|
// called by many processes in rapid succession, so we check for presence
|
|
// first because the first process to run this code will wipe it out first.
|
|
if (contextMap.has(sourcePath)) {
|
|
let oldContext = contextMap.get(sourcePath)
|
|
if (contextSourcesMap.has(oldContext)) {
|
|
contextSourcesMap.get(oldContext).delete(sourcePath)
|
|
if (contextSourcesMap.get(oldContext).size === 0) {
|
|
contextSourcesMap.delete(oldContext)
|
|
for (let [tailwindConfigHash, context] of configContextMap) {
|
|
if (context === oldContext) {
|
|
configContextMap.delete(tailwindConfigHash)
|
|
}
|
|
}
|
|
for (let disposable of oldContext.disposables.splice(0)) {
|
|
disposable(oldContext)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
env.DEBUG && console.log('Setting up new context...')
|
|
|
|
let context = createContext(tailwindConfig, [], root)
|
|
|
|
trackModified([...contextDependencies], getFileModifiedMap(context))
|
|
|
|
// ---
|
|
|
|
// Update all context tracking state
|
|
|
|
configContextMap.set(tailwindConfigHash, context)
|
|
contextMap.set(sourcePath, context)
|
|
|
|
if (!contextSourcesMap.has(context)) {
|
|
contextSourcesMap.set(context, new Set())
|
|
}
|
|
|
|
contextSourcesMap.get(context).add(sourcePath)
|
|
|
|
return [context, true]
|
|
}
|