chushihua

node_modules/vue-loader/lib/style-compiler/load-postcss-config.js

@@ -0,0 +1,66 @@
+const load = require('postcss-load-config')
+
+let loaded
+
+function isObject (val) {
+  return val && typeof val === 'object'
+}
+
+module.exports = function loadPostcssConfig (loaderContext, inlineConfig = {}) {
+  if (inlineConfig.useConfigFile === false) {
+    return Promise.resolve({
+      plugins: inlineConfig.plugins || [],
+      options: inlineConfig.options || {}
+    })
+  }
+
+  if (process.env.VUE_LOADER_TEST || !loaded) {
+    const config = inlineConfig.config || {}
+    const ctx = { webpack: loaderContext }
+    if (config.ctx) {
+      ctx.options = config.ctx
+    }
+    loaded = load(ctx, config.path, { argv: false }).catch(err => {
+      // postcss-load-config throws error when no config file is found,
+      // but for us it's optional. only emit other errors
+      if (err.message.indexOf('No PostCSS Config found') >= 0) {
+        return
+      }
+      const friendlyErr = new Error(`Error loading PostCSS config: ${err.message}`)
+      Error.captureStackTrace(friendlyErr, err)
+      loaderContext.emitError(friendlyErr)
+    })
+  }
+
+  return loaded.then(config => {
+    let plugins = []
+    let options = {}
+
+    // inline postcss options for vue-loader
+    if (typeof inlineConfig === 'function') {
+      inlineConfig = inlineConfig.call(this, this)
+    }
+    if (Array.isArray(inlineConfig)) {
+      plugins = inlineConfig
+    } else if (isObject(inlineConfig)) {
+      plugins =
+        typeof inlineConfig.plugins === 'function'
+          ? inlineConfig.plugins.call(this, this)
+          : inlineConfig.plugins || []
+      options = inlineConfig.options || {}
+    }
+
+    // merge postcss config file
+    if (config && config.plugins) {
+      plugins = plugins.concat(config.plugins)
+    }
+    if (config && config.options) {
+      options = Object.assign({}, config.options, options)
+    }
+
+    return {
+      plugins,
+      options
+    }
+  })
+}