New css interface

flow-typed/mocha.js

@@ -1,2 +1,3 @@
 declare function describe(string, Function): void
 declare function it(string, Function): void
+declare function beforeEach(Function): void

packages/css-jss/.size-snapshot.json

@@ -0,0 +1,31 @@
+{
+  "dist/css-jss.js": {
+    "bundled": 56983,
+    "minified": 20207,
+    "gzipped": 6762
+  },
+  "dist/css-jss.min.js": {
+    "bundled": 56229,
+    "minified": 19748,
+    "gzipped": 6543
+  },
+  "dist/css-jss.cjs.js": {
+    "bundled": 2569,
+    "minified": 1038,
+    "gzipped": 575
+  },
+  "dist/css-jss.esm.js": {
+    "bundled": 2360,
+    "minified": 876,
+    "gzipped": 504,
+    "treeshaked": {
+      "rollup": {
+        "code": 157,
+        "import_statements": 63
+      },
+      "webpack": {
+        "code": 1180
+      }
+    }
+  }
+}

packages/css-jss/LICENSE

@@ -0,0 +1,8 @@
+The MIT License (MIT)
+Copyright (c) 2014-present Oleg Isonen (Slobodskoi) & contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

packages/css-jss/package.json

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+{
+  "name": "css-jss",
+  "description": "Implements css() interface on top of JSS",
+  "version": "10.0.0-alpha.17",
+  "license": "MIT",
+  "homepage": "https://cssinjs.org/",
+  "main": "dist/css-jss.cjs.js",
+  "module": "dist/css-jss.esm.js",
+  "unpkg": "dist/css-jss.bundle.js",
+  "typings": "./src/index.d.ts",
+  "author": "JSS Team",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/cssinjs/jss"
+  },
+  "bugs": {
+    "url": "https://github.com/cssinjs/jss/issues/new"
+  },
+  "files": [
+    "dist",
+    "src",
+    "LICENSE"
+  ],
+  "keywords": [
+    "jss",
+    "style",
+    "sheet",
+    "stylesheet",
+    "css",
+    "components",
+    "composable",
+    "css in js",
+    "css-in-js"
+  ],
+  "scripts": {
+    "build": "node ../../scripts/build.js",
+    "check-snapshot": "node ../../scripts/match-snapshot.js"
+  },
+  "dependencies": {
+    "@babel/runtime": "^7.3.1",
+    "jss": "10.0.0-alpha.17",
+    "jss-preset-default": "10.0.0-alpha.17"
+  }
+}

packages/css-jss/readme.md

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+# css-jss
+
+[![Version](https://img.shields.io/npm/v/css-jss.svg?style=flat)](https://npmjs.org/package/css-jss)
+[![License](https://img.shields.io/npm/l/css-jss.svg?style=flat)](https://github.com/cssinjs/jss/blob/master/LICENSE)
+[![Downlodas](https://img.shields.io/npm/dm/css-jss.svg?style=flat)](https://npmjs.org/package/css-jss)
+[![Size](https://img.shields.io/bundlephobia/minzip/css-jss.svg?style=flat)](https://npmjs.org/package/css-jss)
+[![Dependencies](https://img.shields.io/david/cssinjs/jss.svg?path=packages%2Fcss-jss&style=flat)](https://npmjs.org/package/css-jss)
+[![Gitter](https://badges.gitter.im/JoinChat.svg)](https://gitter.im/cssinjs/lobby)
+
+> Implements css() interface on top of JSS
+
+See our website [css-jss](https://cssinjs.org/css-jss?v=v10.0.0-alpha.17) for more information.
+
+## Install
+
+Using npm:
+
+```sh
+npm install css-jss
+```
+
+or using yarn:
+
+```sh
+yarn add css-jss
+```

packages/css-jss/src/createCss.js

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+// @flow
+import type {StyleSheet} from 'jss'
+// eslint-disable-next-line no-unused-vars
+import type {Css, StyleArg, ClassName} from './types'
+
+const createCss = (sheet: StyleSheet): Css => {
+  const cache = new Map()
+  let ruleIndex = 0
+
+  return function css(/* :: ..._: StyleArg[] */): ClassName {
+    // eslint-disable-next-line prefer-rest-params
+    const args = arguments
+
+    // We can avoid the need for stringification with a babel plugin,
+    // which could generate a hash at build time and add it to the object.
+    const argsStr = JSON.stringify(args)
+    const cached = cache.get(argsStr)
+    if (cached) return cached.className
+
+    const flatArgs = []
+
+    // Flatten arguments which can be
+    // - style objects
+    // - array of style objects
+    // - arrays of style objects
+    for (const argIndex in args) {
+      const arg = args[argIndex]
+      if (!Array.isArray(arg)) {
+        flatArgs.push(arg)
+        continue
+      }
+      for (let innerArgIndex = 0; innerArgIndex < arg.length; innerArgIndex++) {
+        flatArgs.push(arg[innerArgIndex])
+      }
+    }
+
+    const mergedStyle = {}
+    const labels = []
+
+    for (let i = 0; i < flatArgs.length; i++) {
+      let style = flatArgs[i]
+      if (!style) continue
+      // It can be a class name that css() has previously generated.
+      if (typeof style === 'string') {
+        // eslint-disable-next-line no-shadow
+        const cached = cache.get(style)
+        if (cached) {
+          // eslint-disable-next-line prefer-spread
+          if (cached.labels.length) labels.push.apply(labels, cached.labels)
+          style = cached.style
+        }
+      }
+      if (style.label) labels.push(style.label)
+      Object.assign(mergedStyle, style)
+    }
+    delete mergedStyle.label
+    const label = labels.length === 0 ? 'css' : labels.join('-')
+    const key = `${label}-${ruleIndex++}`
+    sheet.addRule(key, mergedStyle)
+    const className = sheet.classes[key]
+    const cacheValue = {style: mergedStyle, labels, className}
+    cache.set(argsStr, cacheValue)
+    cache.set(className, cacheValue)
+    return className
+  }
+}
+
+export default createCss

packages/css-jss/src/createCss.test.js

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+// @flow
+import expect from 'expect.js'
+import {stripIndent} from 'common-tags'
+import {create as createJss} from 'jss'
+import {createGenerateId} from '../../../tests/utils'
+import {create as createCss} from './index'
+
+describe('css-jss', () => {
+  let sheet
+  let css
+
+  beforeEach(() => {
+    sheet = createJss({createGenerateId}).createStyleSheet()
+    css = createCss(sheet)
+  })
+
+  it('should accept a single style object argument', () => {
+    const className = css({color: 'red'})
+    expect(className).to.be('css-0-id')
+    expect(sheet.toString()).to.be(stripIndent`
+      .css-0-id {
+        color: red;
+      }
+    `)
+  })
+
+  it('should accept multiple style object arguments', () => {
+    const className = css({color: 'red'}, {background: 'green'})
+    expect(className).to.be('css-0-id')
+    expect(sheet.toString()).to.be(stripIndent`
+      .css-0-id {
+        color: red;
+        background: green;
+      }
+    `)
+  })
+
+  it('should accept multiple style object array', () => {
+    const className = css([{color: 'red'}, {background: 'green'}])
+    expect(className).to.be('css-0-id')
+    expect(sheet.toString()).to.be(stripIndent`
+      .css-0-id {
+        color: red;
+        background: green;
+      }
+    `)
+  })
+
+  it('should accept multiple style object array and style objects', () => {
+    const className = css([{color: 'red'}, {background: 'green'}], {float: 'left'})
+    expect(className).to.be('css-0-id')
+    expect(sheet.toString()).to.be(stripIndent`
+      .css-0-id {
+        color: red;
+        background: green;
+        float: left;
+      }
+    `)
+  })
+
+  it('should accept multiple style object arrays', () => {
+    const className = css([{color: 'red'}, {background: 'green'}], [{float: 'left'}])
+    expect(className).to.be('css-0-id')
+    expect(sheet.toString()).to.be(stripIndent`
+      .css-0-id {
+        color: red;
+        background: green;
+        float: left;
+      }
+    `)
+  })
+
+  it('should compose css() calls', () => {
+    const className = css(css({color: 'red'}), css({background: 'green'}))
+    expect(className).to.be('css-2-id')
+    expect(sheet.toString()).to.be(stripIndent`
+      .css-0-id {
+        color: red;
+      }
+      .css-1-id {
+        background: green;
+      }
+      .css-2-id {
+        color: red;
+        background: green;
+      }
+    `)
+  })
+
+  it('should compose css() calls inside of array arg', () => {
+    const className = css([css({color: 'red'}), css({background: 'green'})])
+    expect(className).to.be('css-2-id')
+    expect(sheet.toString()).to.be(stripIndent`
+      .css-0-id {
+        color: red;
+      }
+      .css-1-id {
+        background: green;
+      }
+      .css-2-id {
+        color: red;
+        background: green;
+      }
+    `)
+  })
+
+  it('should compose css() calls from mixed array and strings', () => {
+    const className = css([css({color: 'red'}), css({background: 'green'})], css({float: 'left'}))
+    expect(className).to.be('css-3-id')
+    expect(sheet.toString()).to.be(stripIndent`
+      .css-0-id {
+        color: red;
+      }
+      .css-1-id {
+        background: green;
+      }
+      .css-2-id {
+        float: left;
+      }
+      .css-3-id {
+        color: red;
+        background: green;
+        float: left;
+      }
+    `)
+  })
+
+  it('should ignore empty values', () => {
+    const className = css(null, {color: 'red'}, '', {background: 'green'}, undefined)
+    expect(className).to.be('css-0-id')
+    expect(sheet.toString()).to.be(stripIndent`
+      .css-0-id {
+        color: red;
+        background: green;
+      }
+    `)
+  })
+
+  it('should accept label', () => {
+    const className = css({color: 'red', label: 'xxx'}, {background: 'green'})
+    expect(className).to.be('xxx-0-id')
+    expect(sheet.toString()).to.be(stripIndent`
+      .xxx-0-id {
+        color: red;
+        background: green;
+      }
+    `)
+  })
+
+  it('should merge label', () => {
+    const className = css({color: 'red', label: 'xxx'}, {background: 'green', label: 'yyy'})
+    expect(className).to.be('xxx-yyy-0-id')
+    expect(sheet.toString()).to.be(stripIndent`
+      .xxx-yyy-0-id {
+        color: red;
+        background: green;
+      }
+    `)
+  })
+
+  it('should cache a single style', () => {
+    const style = {color: 'red'}
+    const className1 = css(style)
+    const className2 = css(style)
+    expect(className1).to.be('css-0-id')
+    expect(className2).to.be('css-0-id')
+    expect(sheet.toString()).to.be(stripIndent`
+      .css-0-id {
+        color: red;
+      }
+    `)
+  })
+
+  it('should cache multiple styles', () => {
+    const style1 = {color: 'red'}
+    const style2 = {background: 'green'}
+    const className1 = css(style1, style2)
+    const className2 = css(style1, style2)
+    expect(className1).to.be('css-0-id')
+    expect(className2).to.be('css-0-id')
+    expect(sheet.toString()).to.be(stripIndent`
+      .css-0-id {
+        color: red;
+        background: green;
+      }
+    `)
+  })
+
+  it('should try get the cached rule by using a ref first before trying to stringify', () => {})
+})

packages/css-jss/src/index.js

@@ -0,0 +1,18 @@
+// @flow
+import {create as createJss} from 'jss'
+import type {StyleSheet} from 'jss'
+import preset from 'jss-preset-default'
+import createCss from './createCss'
+import type {Css, Style} from './types'
+
+const jss = createJss(preset())
+const defaultSheet = jss.createStyleSheet().attach()
+
+export type {Css, Style}
+
+export const create = (sheet?: StyleSheet): Css => {
+  if (sheet) defaultSheet.detach()
+  return createCss(sheet || defaultSheet)
+}
+
+export default create()