248 lines
9.8 KiB
JavaScript
248 lines
9.8 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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Object.defineProperty(exports, "default", {
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enumerable: true,
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get: ()=>expandTailwindAtRules
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});
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const _quickLru = /*#__PURE__*/ _interopRequireDefault(require("quick-lru"));
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const _sharedState = /*#__PURE__*/ _interopRequireWildcard(require("./sharedState"));
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const _generateRules = require("./generateRules");
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const _log = /*#__PURE__*/ _interopRequireDefault(require("../util/log"));
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const _cloneNodes = /*#__PURE__*/ _interopRequireDefault(require("../util/cloneNodes"));
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const _defaultExtractor = require("./defaultExtractor");
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function _interopRequireDefault(obj) {
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return obj && obj.__esModule ? obj : {
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default: obj
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};
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}
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function _getRequireWildcardCache(nodeInterop) {
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if (typeof WeakMap !== "function") return null;
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var cacheBabelInterop = new WeakMap();
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var cacheNodeInterop = new WeakMap();
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return (_getRequireWildcardCache = function(nodeInterop) {
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return nodeInterop ? cacheNodeInterop : cacheBabelInterop;
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})(nodeInterop);
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}
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function _interopRequireWildcard(obj, nodeInterop) {
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if (!nodeInterop && obj && obj.__esModule) {
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return obj;
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}
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if (obj === null || typeof obj !== "object" && typeof obj !== "function") {
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return {
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default: obj
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};
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}
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var cache = _getRequireWildcardCache(nodeInterop);
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if (cache && cache.has(obj)) {
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return cache.get(obj);
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}
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var newObj = {};
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var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor;
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for(var key in obj){
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if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) {
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var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null;
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if (desc && (desc.get || desc.set)) {
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Object.defineProperty(newObj, key, desc);
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} else {
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newObj[key] = obj[key];
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}
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}
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}
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newObj.default = obj;
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if (cache) {
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cache.set(obj, newObj);
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}
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return newObj;
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}
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let env = _sharedState.env;
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const builtInExtractors = {
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DEFAULT: _defaultExtractor.defaultExtractor
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};
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const builtInTransformers = {
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DEFAULT: (content)=>content,
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svelte: (content)=>content.replace(/(?:^|\s)class:/g, " ")
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};
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function getExtractor(context, fileExtension) {
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let extractors = context.tailwindConfig.content.extract;
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return extractors[fileExtension] || extractors.DEFAULT || builtInExtractors[fileExtension] || builtInExtractors.DEFAULT(context);
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}
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function getTransformer(tailwindConfig, fileExtension) {
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let transformers = tailwindConfig.content.transform;
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return transformers[fileExtension] || transformers.DEFAULT || builtInTransformers[fileExtension] || builtInTransformers.DEFAULT;
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}
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let extractorCache = new WeakMap();
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// Scans template contents for possible classes. This is a hot path on initial build but
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// not too important for subsequent builds. The faster the better though — if we can speed
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// up these regexes by 50% that could cut initial build time by like 20%.
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function getClassCandidates(content, extractor, candidates, seen) {
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if (!extractorCache.has(extractor)) {
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extractorCache.set(extractor, new _quickLru.default({
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maxSize: 25000
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}));
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}
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for (let line of content.split("\n")){
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line = line.trim();
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if (seen.has(line)) {
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continue;
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}
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seen.add(line);
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if (extractorCache.get(extractor).has(line)) {
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for (let match of extractorCache.get(extractor).get(line)){
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candidates.add(match);
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}
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} else {
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let extractorMatches = extractor(line).filter((s)=>s !== "!*");
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let lineMatchesSet = new Set(extractorMatches);
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for (let match1 of lineMatchesSet){
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candidates.add(match1);
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}
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extractorCache.get(extractor).set(line, lineMatchesSet);
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}
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}
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}
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/**
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*
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* @param {[import('./offsets.js').RuleOffset, import('postcss').Node][]} rules
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* @param {*} context
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*/ function buildStylesheet(rules, context) {
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let sortedRules = context.offsets.sort(rules);
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let returnValue = {
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base: new Set(),
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defaults: new Set(),
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components: new Set(),
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utilities: new Set(),
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variants: new Set()
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};
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for (let [sort, rule] of sortedRules){
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returnValue[sort.layer].add(rule);
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}
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return returnValue;
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}
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function expandTailwindAtRules(context) {
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return (root)=>{
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let layerNodes = {
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base: null,
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components: null,
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utilities: null,
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variants: null
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};
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root.walkAtRules((rule)=>{
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// Make sure this file contains Tailwind directives. If not, we can save
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// a lot of work and bail early. Also we don't have to register our touch
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// file as a dependency since the output of this CSS does not depend on
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// the source of any templates. Think Vue <style> blocks for example.
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if (rule.name === "tailwind") {
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if (Object.keys(layerNodes).includes(rule.params)) {
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layerNodes[rule.params] = rule;
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}
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}
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});
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if (Object.values(layerNodes).every((n)=>n === null)) {
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return root;
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}
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// ---
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// Find potential rules in changed files
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let candidates = new Set([
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_sharedState.NOT_ON_DEMAND
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]);
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let seen = new Set();
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env.DEBUG && console.time("Reading changed files");
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for (let { content , extension } of context.changedContent){
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let transformer = getTransformer(context.tailwindConfig, extension);
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let extractor = getExtractor(context, extension);
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getClassCandidates(transformer(content), extractor, candidates, seen);
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}
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env.DEBUG && console.timeEnd("Reading changed files");
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// ---
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// Generate the actual CSS
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let classCacheCount = context.classCache.size;
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env.DEBUG && console.time("Generate rules");
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(0, _generateRules.generateRules)(candidates, context);
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env.DEBUG && console.timeEnd("Generate rules");
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// We only ever add to the classCache, so if it didn't grow, there is nothing new.
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env.DEBUG && console.time("Build stylesheet");
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if (context.stylesheetCache === null || context.classCache.size !== classCacheCount) {
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context.stylesheetCache = buildStylesheet([
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...context.ruleCache
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], context);
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}
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env.DEBUG && console.timeEnd("Build stylesheet");
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let { defaults: defaultNodes , base: baseNodes , components: componentNodes , utilities: utilityNodes , variants: screenNodes , } = context.stylesheetCache;
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// ---
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// Replace any Tailwind directives with generated CSS
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if (layerNodes.base) {
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layerNodes.base.before((0, _cloneNodes.default)([
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...baseNodes,
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...defaultNodes
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], layerNodes.base.source, {
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layer: "base"
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}));
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layerNodes.base.remove();
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}
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if (layerNodes.components) {
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layerNodes.components.before((0, _cloneNodes.default)([
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...componentNodes
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], layerNodes.components.source, {
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layer: "components"
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}));
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layerNodes.components.remove();
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}
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if (layerNodes.utilities) {
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layerNodes.utilities.before((0, _cloneNodes.default)([
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...utilityNodes
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], layerNodes.utilities.source, {
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layer: "utilities"
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}));
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layerNodes.utilities.remove();
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}
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// We do post-filtering to not alter the emitted order of the variants
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const variantNodes = Array.from(screenNodes).filter((node)=>{
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var ref;
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const parentLayer = (ref = node.raws.tailwind) === null || ref === void 0 ? void 0 : ref.parentLayer;
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if (parentLayer === "components") {
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return layerNodes.components !== null;
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}
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if (parentLayer === "utilities") {
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return layerNodes.utilities !== null;
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}
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return true;
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});
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if (layerNodes.variants) {
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layerNodes.variants.before((0, _cloneNodes.default)(variantNodes, layerNodes.variants.source, {
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layer: "variants"
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}));
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layerNodes.variants.remove();
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} else if (variantNodes.length > 0) {
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root.append((0, _cloneNodes.default)(variantNodes, root.source, {
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layer: "variants"
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}));
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}
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// If we've got a utility layer and no utilities are generated there's likely something wrong
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const hasUtilityVariants = variantNodes.some((node)=>{
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var ref;
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return ((ref = node.raws.tailwind) === null || ref === void 0 ? void 0 : ref.parentLayer) === "utilities";
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});
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if (layerNodes.utilities && utilityNodes.size === 0 && !hasUtilityVariants) {
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_log.default.warn("content-problems", [
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"No utility classes were detected in your source files. If this is unexpected, double-check the `content` option in your Tailwind CSS configuration.",
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"https://tailwindcss.com/docs/content-configuration"
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]);
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}
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// ---
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if (env.DEBUG) {
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console.log("Potential classes: ", candidates.size);
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console.log("Active contexts: ", _sharedState.contextSourcesMap.size);
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}
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// Clear the cache for the changed files
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context.changedContent = [];
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// Cleanup any leftover @layer atrules
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root.walkAtRules("layer", (rule)=>{
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if (Object.keys(layerNodes).includes(rule.params)) {
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rule.remove();
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}
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});
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};
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}
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