feat: add plugin to remove rtl

packages/nutui-optimize-css/README.md

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+通过配置 postcss 对组件库的 css 进行优化。
+
+1. Taro 环境下的配置示例
+
+```text
+{
+  "mini": {
+    "postcss": {
+      "@nutui/optimize-css": {
+        "enable": true,
+        "config": {
+          "removeRtl": true,
+          "cssVariables": {
+            "include": [path.join(__dirname, 'variables.scss')],
+            "exclude": ["--nutui-color-primary-text"],
+            "type": "replace"
+          }
+        }
+      }
+    }
+  }
+}
+```
+
+配置说明：
+
+1. removeRtl：删除 rtl 相关样式
+2. cssVariables
+   - include: 指定css变量的文件
+   - exclude: 设置哪些 css 变量不进行替换, 在 JS 控制 css 变量时可以使用 exclude 指定
+   - type: css 变量的替换方案，默认不处理，当设置 replace 时，可将 css 变量替换为实际值

packages/nutui-optimize-css/build.config.ts

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+import { defineBuildConfig } from 'unbuild'
+
+export default defineBuildConfig({
+  failOnWarn: false,
+  entries: [
+    {
+      input: 'src/index',
+      outDir: 'dist',
+      format: 'cjs',
+      ext: 'cjs',
+    },
+  ],
+  outDir: 'dist',
+  externals: ['postcss', 'postcss-css-variables', 'postcss-scss'],
+  rollup: {
+    emitCJS: true,
+  },
+})

packages/nutui-optimize-css/package.json

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+{
+  "name": "@nutui/optimize-css",
+  "version": "1.0.0",
+  "description": "remove rtl",
+  "main": "dist/index.cjs",
+  "scripts": {
+    "build": "unbuild",
+    "test": "pnpm build && vitest"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "devDependencies": {
+    "@types/lodash": "^4.17.1",
+    "@types/node": "^20.14.11",
+    "@types/postcss-css-variables": "^0.18.3",
+    "ts-node": "^10.9.2",
+    "unbuild": "^2.0.0",
+    "vitest": "^1.5.0"
+  },
+  "dependencies": {
+    "lodash": "^4.17.21",
+    "postcss": "^8.4.39",
+    "postcss-css-variables": "^0.19.0",
+    "postcss-scss": "^4.0.9"
+  }
+}

packages/nutui-optimize-css/src/index.ts

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+import { optimizeCss } from './postcss-plugins'
+
+export default optimizeCss

packages/nutui-optimize-css/src/postcss-plugins/index.ts

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+import postcss, { ProcessOptions, Root, Document } from 'postcss'
+import { merge } from 'lodash'
+import cssVariables from 'postcss-css-variables'
+import { parse } from 'postcss-scss'
+import * as fs from 'fs'
+
+export type CSSVariable = `--${string}`
+export type FilePath = string
+
+export interface Options {
+  removeRtl: boolean
+  cssVariables: {
+    include: FilePath[]
+    exclude: CSSVariable[]
+    type: 'normal' | 'replace'
+  }
+}
+
+function removeRtl(rule: any, canRemove: boolean) {
+  if (!canRemove) return
+
+  const sourceFile = rule.source.input.file
+  if (
+    sourceFile &&
+    sourceFile.indexOf('@nutui') === -1 &&
+    sourceFile.indexOf('@dongdesign') === -1
+  )
+    return
+  if (
+    rule.selector.indexOf('nut-rtl') > -1 ||
+    rule.selector.indexOf('[dir=rtl]') > -1
+  )
+    rule.remove()
+}
+
+async function replaceCssVariables(
+  root,
+  cssVariablesContent: string[],
+  exclude: string[] = []
+) {
+  cssVariablesContent.push(root.toResult().css)
+  const options: ProcessOptions<Document | Root> = {
+    parser: parse,
+    from: undefined,
+  } as ProcessOptions<Root>
+  const replacedCss = postcss([
+    cssVariables({
+      preserve: (declaration) => {
+        if (exclude.includes(declaration.prop)) {
+          return true
+        }
+        const cssvars = declaration.value.match(/var\((--nutui-[\w\d-]+)\)/)
+        if (cssvars && exclude.includes(cssvars[1])) return true
+        return false
+      },
+    }),
+  ]).process(cssVariablesContent.join('\n'), options).css
+
+  const replacedRoot = postcss.parse(replacedCss)
+  root.raws = replacedRoot.raws
+  root.nodes = replacedRoot.nodes
+}
+
+export function optimizeCss(opts: Options) {
+  const defaultConfig = {
+    removeRtl: false,
+    cssVariables: {
+      include: [],
+      type: 'normal',
+    },
+  }
+  const config = merge(defaultConfig, opts)
+  const cssVariablesContent: string[] = []
+  if (config.cssVariables.type !== 'normal') {
+    config.cssVariables.include.forEach((p: string) => {
+      let content = ''
+      try {
+        // 从绝对路径读取 CSS 变量的内容
+        content = fs.readFileSync(p).toString()
+      } catch (e) {
+        content = ''
+      }
+      cssVariablesContent.push(content)
+    })
+  }
+
+  return {
+    postcssPlugin: 'postcss-optimize-css',
+    OnceExit(root) {
+      if (config.cssVariables.type === 'replace') {
+        replaceCssVariables(
+          root,
+          cssVariablesContent,
+          config.cssVariables.exclude
+        )
+      }
+    },
+    Rule(rule) {
+      removeRtl(rule, opts.removeRtl)
+    },
+  }
+}

packages/nutui-optimize-css/test/__snapshots__/remove-rtl.test.ts.snap

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+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
+
+exports[`@nutui/optimize-css > remove rtl 1`] = `
+"
+"
+`;

packages/nutui-optimize-css/test/__snapshots__/replace-css-var.test.ts.snap

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+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
+
+exports[`@nutui/optimize-css > optimize css 1`] = `
+":root {
+  --nutui-color-primary-text: blue;
+}
+
+
+.nut-address-footer-btn {
+  background: linear-gradient(135deg, yellow 0%, #fa2c19 100%);
+  color: blue;
+  color: var(--nutui-color-primary-text)
+}
+"
+`;

packages/nutui-optimize-css/test/remove-rtl.test.ts

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+import postcss from 'postcss'
+import { describe, expect, it } from 'vitest'
+import optimizeCss from '../dist/index.cjs'
+
+const css = `
+[dir=rtl] .ca, .xcdd {
+  margin-left: 0;
+  margin-right: 9px
+}
+[dir=rtl] .nut-address-exist-item-info, .nut-rtl .nut-address-exist-item-info {
+  margin-left: 0;
+  margin-right: 9px
+}
+`
+describe('@nutui/optimize-css', () => {
+  it('remove rtl', async () => {
+    const a = await postcss([
+      optimizeCss({
+        removeRtl: true,
+      }),
+    ]).process(css, { from: undefined })
+    const optimizedCsss = a.css.toString()
+    // @ts-ignore
+    expect(optimizedCsss).toMatchSnapshot()
+  })
+})

packages/nutui-optimize-css/test/replace-css-var.test.ts

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+import postcss from 'postcss'
+import path from 'path'
+import { describe, expect, it } from 'vitest'
+import optimizeCss from '../dist/index.cjs'
+
+const css = `
+.nut-address-footer-btn {
+  background: linear-gradient(135deg, var(--nutui-color-primary-stop-1, #f53d6d) 0%, var(--nutui-color-primary-stop-2, #fa2c19) 100%);
+  color: var(--nutui-color-primary-text)
+}
+`
+describe('@nutui/optimize-css', () => {
+  it('optimize css', async () => {
+    const a = await postcss([
+      optimizeCss({
+        cssVariables: {
+          include: [path.join(__dirname, 'variables.scss')],
+          exclude: ['--nutui-color-primary-text'],
+          type: 'replace',
+        },
+      }),
+    ]).process(css, { from: undefined })
+    const optimizedCsss = a.css.toString()
+    console.log(optimizedCsss)
+    // @ts-ignore
+    expect(optimizedCsss).toMatchSnapshot()
+  })
+})

packages/nutui-optimize-css/test/variables.css

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+:root {
+  --nutui-color-primary-stop-1: red;
+  --nutui-color-primary-text: green;
+}

packages/nutui-optimize-css/test/variables.scss

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+:root {
+  --nutui-color-primary-text: blue;
+  --nutui-color-primary-stop-1: yellow;
+}

packages/nutui-optimize-css/tsconfig.json

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+{
+  "extends": "../../tsconfig.json",
+  "compilerOptions": {
+    "allowSyntheticDefaultImports": true,
+    "experimentalDecorators": true,
+    "moduleResolution": "node",
+    "noImplicitAny": false,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "removeComments": false,
+    "resolveJsonModule": true,
+    "skipLibCheck": true,
+    "strictNullChecks": true,
+    "target": "ES2015",
+    "outDir": "./dist",
+    "rootDir": "./src",
+    "module": "ESNext",
+    "sourceMap": true,
+    "declaration": true,
+    "declarationDir": "types",
+    "isolatedModules": false,
+    "types": ["node"]
+  },
+  "include": [
+    "./src"
+  ]
+}

packages/nutui-optimize-css/vitest.config.ts

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+import { defineConfig } from 'vitest/config'
+
+export default defineConfig({
+  test: {
+    // ... Specify options here.
+  },
+})