Merge pull request #2225 from tailwindlabs/add-postcss-init-option

add tailwind -p init option to generate a postcss file

__tests__/cli.test.js

@@ -10,6 +10,7 @@ describe('cli', () => {
   const customConfigPath = path.resolve(__dirname, 'fixtures/custom-config.js')
   const defaultConfigFixture = utils.readFile(constants.defaultConfigStubFile)
   const simpleConfigFixture = utils.readFile(constants.simpleConfigStubFile)
+  const defaultPostCssConfigFixture = utils.readFile(constants.defaultPostCssConfigStubFile)
 
   beforeEach(() => {
     console.log = jest.fn()
@@ -25,6 +26,17 @@ describe('cli', () => {
       })
     })
 
+    it('creates a Tailwind config file and a postcss.config.js file', () => {
+      return runInTempDirectory(() => {
+        return cli(['init', '-p']).then(() => {
+          expect(utils.readFile(constants.defaultConfigFile)).toEqual(simpleConfigFixture)
+          expect(utils.readFile(constants.defaultPostCssConfigFile)).toEqual(
+            defaultPostCssConfigFixture
+          )
+        })
+      })
+    })
+
     it('creates a full Tailwind config file', () => {
       return runInTempDirectory(() => {
         return cli(['init', '--full']).then(() => {

src/cli/commands/init.js

@@ -13,10 +13,15 @@ export const options = [
     usage: '--full',
     description: 'Generate complete configuration file.',
   },
+  {
+    usage: '-p',
+    description: 'Generate a postcss configuration file.',
+  },
 ]
 
 export const optionMap = {
   full: ['full'],
+  postcss: ['p'],
 }
 
 /**
@@ -43,6 +48,14 @@ export function run(cliParams, cliOptions) {
     utils.log()
     utils.log(emoji.yes, 'Created Tailwind config file:', colors.file(simplePath))
 
+    if (cliOptions.postcss) {
+      const path = utils.getSimplePath(constants.defaultPostCssConfigFile)
+      utils.exists(constants.defaultPostCssConfigFile) &&
+        utils.die(colors.file(path), 'already exists.')
+      utils.copyFile(constants.defaultPostCssConfigStubFile, constants.defaultPostCssConfigFile)
+      utils.log(emoji.yes, 'Created PostCSS config file:', colors.file(path))
+    }
+
     utils.footer()
 
     resolve()

src/constants.js

@@ -2,5 +2,11 @@ import path from 'path'
 
 export const cli = 'tailwind'
 export const defaultConfigFile = './tailwind.config.js'
+export const defaultPostCssConfigFile = './postcss.config.js'
+
 export const defaultConfigStubFile = path.resolve(__dirname, '../stubs/defaultConfig.stub.js')
 export const simpleConfigStubFile = path.resolve(__dirname, '../stubs/simpleConfig.stub.js')
+export const defaultPostCssConfigStubFile = path.resolve(
+  __dirname,
+  '../stubs/defaultPostCssConfig.stub.js'
+)

stubs/defaultPostCssConfig.stub.js

@@ -0,0 +1,7 @@
+module.exports = {
+  plugins: {
+    tailwindcss: {},
+    autoprefixer: {},
+  },
+}
+