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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 | 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 12x 12x 12x 5x 7x 4x 4x 4x 3x 1x 1x 1x 1x 2x 1x 1x 1x 1x 1x 6x 4x 21x 21x 21x 21x 21x 10x 11x 10x 10x 10x 10x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 4x 4x 11x 5x 5x 5x 11x 10x 10x 10x 10x 11x 6x 6x 6x 6x | import path from 'path' import fs from 'fs' import resolveFile from 'resolve-file' import postcss from 'postcss' import cssModules from 'postcss-modules' import temp from 'temp' import { TextDecoder } from 'util' import { OnLoadArgs, OnLoadResult, OnResolveArgs, OnResolveResult, PluginBuild } from 'esbuild' import { getModule, isCSSModule } from './helpers' export interface PluginOptions { extract?: boolean cssModuleMatch?: RegExp postcss?: unknown[] } export interface RenderOptions { sassOptions?: {} stylusOptions?: {} lessOptions?: {} } const LOAD_TEMP_NAMESPACE = 'load_temp_namespace' const LOAD_STYLE_NAMESPACE = 'load_style_namespace' const styleFilter = /.\.(css|sass|scss|less|styl)$/ export const renderStyle = async (filePath, options: RenderOptions = {}) => { const { ext } = path.parse(filePath) if (ext === '.css') { return await fs.promises.readFile(filePath) } if (ext === '.sass' || ext === '.scss') { const sassOptions = options.sassOptions || {} const sass = getModule('sass') return sass.renderSync({ ...sassOptions, file: filePath }).css.toString('utf-8') } if (ext === '.styl') { const stylusOptions = options.sassOptions || {} const stylus = getModule('stylus') const source = await fs.promises.readFile(filePath) return await stylus.render(new TextDecoder().decode(source), { ...stylusOptions, filename: filePath }) } if (ext === '.less') { const lestOptions = options.lessOptions || {} const less = getModule('less') const source = await fs.promises.readFile(filePath) return (await less.render(new TextDecoder().decode(source), { ...lestOptions, filename: filePath })).css } throw new Error(`Can't render this style '${ext}'.`) } const handleCSSModules = (mapping) => cssModules({ getJSON: (_, json) => { mapping.data = JSON.stringify(json, null, 2) } }) const onStyleResolve = async (args: OnResolveArgs): Promise<OnResolveResult> => { const { namespace, resolveDir } = args let fullPath = resolveFile(args.path, {}) if (!fullPath) fullPath = path.resolve(args.resolveDir, args.path) if (namespace === LOAD_STYLE_NAMESPACE) { return { path: fullPath, namespace: LOAD_TEMP_NAMESPACE, pluginData: { resolveDir } } } return { path: fullPath, namespace: LOAD_STYLE_NAMESPACE } } const onTempLoad = async (args: OnLoadArgs): Promise<OnLoadResult> => { const { pluginData } = args const data = await fs.promises.readFile(args.path) return { resolveDir: pluginData.resolveDir, contents: data, loader: 'css' } } const onStyleLoad = (options) => async (args: OnLoadArgs): Promise<OnLoadResult> => { // { extract: false } is for SSR since we only need the css mapping and not the actual css file const extract = options.extract === undefined ? true : options.extract const cssModulesMatch = options.cssModulesMatch || /\.module\./ const isCSSModule = args.path.match(cssModulesMatch) // Render whatever style currently on the loader .css, .sass, .styl, .less let css = await renderStyle(args.path) let mapping = { data: {} } let plugins = options.postcss || [] let injectMapping = false let contents = '' // Match file with extension .module. => styles.module.sass if (isCSSModule) { // We have css module file so we include the postcss-modules plugin plugins = [handleCSSModules(mapping), ...plugins] injectMapping = true } // Makes no sense to process postcss if we don't have any plugins if (plugins.length > 0) { console.log(plugins) css = (await postcss(plugins).process(css, { from: args.path })).css // Inject classnames mapping for css modules if (injectMapping) contents += `export default ${mapping.data};` } // Write new css to a temporary file if (extract) { const writestream = temp.createWriteStream({ suffix: '.css' }) writestream.write(css) writestream.end() // Inject import "new url path" so esbuild can resolve a new css file contents += `import ${JSON.stringify(writestream.path)};` } return { resolveDir: path.dirname(args.path), // Keep resolveDir for onTempLoad anything resolve inside temp file must be resolve using source dir contents: contents } } export default (options: PluginOptions = {}) => ({ name: 'esbuild-postcss-plugin', setup: (build: PluginBuild) => { // Resolve all css or other style here build.onResolve({ filter: styleFilter }, onStyleResolve) // New temp files from rendered css must evaluated build.onLoad({ filter: /.*/, namespace: LOAD_TEMP_NAMESPACE }, onTempLoad) // Render css with CSS Extensions / Preprocessors and PostCSS build.onLoad({ filter: /.*/, namespace: LOAD_STYLE_NAMESPACE }, onStyleLoad(options)) } }) |