初始化代码

uniapp/uni-app/node_modules/postcss-loader/src/Error.js

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+/**
+ * **PostCSS Syntax Error**
+ *
+ * Loader wrapper for postcss syntax errors
+ *
+ * @class SyntaxError
+ * @extends Error
+ *
+ * @param {Object} err CssSyntaxError
+ */
+class SyntaxError extends Error {
+  constructor (error) {
+    super(error)
+
+    const { line, column, reason } = error
+
+    this.name = 'SyntaxError'
+
+    this.message = `${this.name}\n\n`
+
+    if (typeof line !== 'undefined') {
+      this.message += `(${line}:${column}) `
+    }
+
+    this.message += `${reason}`
+
+    const code = error.showSourceCode()
+
+    if (code) {
+      this.message += `\n\n${code}\n`
+    }
+
+    this.stack = false
+  }
+}
+
+module.exports = SyntaxError

uniapp/uni-app/node_modules/postcss-loader/src/Warning.js

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+/**
+ * **PostCSS Plugin Warning**
+ *
+ * Loader wrapper for postcss plugin warnings (`root.messages`)
+ *
+ * @class Warning
+ * @extends Error
+ *
+ * @param {Object} warning PostCSS Warning
+ */
+class Warning extends Error {
+  constructor (warning) {
+    super(warning)
+
+    const { text, line, column } = warning
+
+    this.name = 'Warning'
+
+    this.message = `${this.name}\n\n`
+
+    if (typeof line !== 'undefined') {
+      this.message += `(${line}:${column}) `
+    }
+
+    this.message += `${text}`
+
+    this.stack = false
+  }
+}
+
+module.exports = Warning

uniapp/uni-app/node_modules/postcss-loader/src/index.js

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+const path = require('path')
+
+const { getOptions } = require('loader-utils')
+const validateOptions = require('schema-utils')
+
+const postcss = require('postcss')
+const postcssrc = require('postcss-load-config')
+
+const Warning = require('./Warning.js')
+const SyntaxError = require('./Error.js')
+const parseOptions = require('./options.js')
+
+/**
+ * **PostCSS Loader**
+ *
+ * Loads && processes CSS with [PostCSS](https://github.com/postcss/postcss)
+ *
+ * @method loader
+ *
+ * @param {String} css Source
+ * @param {Object} map Source Map
+ *
+ * @return {cb} cb Result
+ */
+function loader (css, map, meta) {
+  const options = Object.assign({}, getOptions(this))
+
+  validateOptions(require('./options.json'), options, 'PostCSS Loader')
+
+  const cb = this.async()
+  const file = this.resourcePath
+
+  const sourceMap = options.sourceMap
+
+  Promise.resolve().then(() => {
+    const length = Object.keys(options)
+      .filter((option) => {
+        switch (option) {
+          // case 'exec':
+          case 'ident':
+          case 'config':
+          case 'sourceMap':
+            return
+          default:
+            return option
+        }
+      })
+      .length
+
+    if (length) {
+      return parseOptions.call(this, options)
+    }
+
+    const rc = {
+      path: path.dirname(file),
+      ctx: {
+        file: {
+          extname: path.extname(file),
+          dirname: path.dirname(file),
+          basename: path.basename(file)
+        },
+        options: {}
+      }
+    }
+
+    if (options.config) {
+      if (options.config.path) {
+        rc.path = path.resolve(options.config.path)
+      }
+
+      if (options.config.ctx) {
+        rc.ctx.options = options.config.ctx
+      }
+    }
+
+    rc.ctx.webpack = this
+
+    return postcssrc(rc.ctx, rc.path)
+  }).then((config) => {
+    if (!config) {
+      config = {}
+    }
+
+    if (config.file) {
+      this.addDependency(config.file)
+    }
+
+    // Disable override `to` option from `postcss.config.js`
+    if (config.options.to) {
+      delete config.options.to
+    }
+    // Disable override `from` option from `postcss.config.js`
+    if (config.options.from) {
+      delete config.options.from
+    }
+
+    let plugins = config.plugins || []
+
+    let options = Object.assign({
+      from: file,
+      map: sourceMap
+        ? sourceMap === 'inline'
+          ? { inline: true, annotation: false }
+          : { inline: false, annotation: false }
+        : false
+    }, config.options)
+
+    // Loader Exec (Deprecated)
+    // https://webpack.js.org/api/loaders/#deprecated-context-properties
+    if (options.parser === 'postcss-js') {
+      css = this.exec(css, this.resource)
+    }
+
+    if (typeof options.parser === 'string') {
+      options.parser = require(options.parser)
+    }
+
+    if (typeof options.syntax === 'string') {
+      options.syntax = require(options.syntax)
+    }
+
+    if (typeof options.stringifier === 'string') {
+      options.stringifier = require(options.stringifier)
+    }
+
+    // Loader API Exec (Deprecated)
+    // https://webpack.js.org/api/loaders/#deprecated-context-properties
+    if (config.exec) {
+      css = this.exec(css, this.resource)
+    }
+
+    if (sourceMap && typeof map === 'string') {
+      map = JSON.parse(map)
+    }
+
+    if (sourceMap && map) {
+      options.map.prev = map
+    }
+
+    return postcss(plugins)
+      .process(css, options)
+      .then((result) => {
+        let { css, map, root, processor, messages } = result
+
+        result.warnings().forEach((warning) => {
+          this.emitWarning(new Warning(warning))
+        })
+
+        messages.forEach((msg) => {
+          if (msg.type === 'dependency') {
+            this.addDependency(msg.file)
+          }
+        })
+
+        map = map ? map.toJSON() : null
+
+        if (map) {
+          map.file = path.resolve(map.file)
+          map.sources = map.sources.map((src) => path.resolve(src))
+        }
+
+        if (!meta) {
+          meta = {}
+        }
+
+        const ast = {
+          type: 'postcss',
+          version: processor.version,
+          root
+        }
+
+        meta.ast = ast
+        meta.messages = messages
+
+        if (this.loaderIndex === 0) {
+          /**
+           * @memberof loader
+           * @callback cb
+           *
+           * @param {Object} null Error
+           * @param {String} css  Result (JS Module)
+           * @param {Object} map  Source Map
+           */
+          cb(null, `module.exports = ${JSON.stringify(css)}`, map)
+
+          return null
+        }
+
+        /**
+         * @memberof loader
+         * @callback cb
+         *
+         * @param {Object} null Error
+         * @param {String} css  Result (Raw Module)
+         * @param {Object} map  Source Map
+         */
+        cb(null, css, map, meta)
+
+        return null
+      })
+  }).catch((err) => {
+    if (err.file) {
+      this.addDependency(err.file)
+    }
+
+    return err.name === 'CssSyntaxError'
+      ? cb(new SyntaxError(err))
+      : cb(err)
+  })
+}
+
+/**
+ * @author Andrey Sitnik (@ai) <andrey@sitnik.ru>
+ *
+ * @license MIT
+ * @version 3.0.0
+ *
+ * @module postcss-loader
+ *
+ * @requires path
+ *
+ * @requires loader-utils
+ * @requires schema-utils
+ *
+ * @requires postcss
+ * @requires postcss-load-config
+ *
+ * @requires ./options.js
+ * @requires ./Warning.js
+ * @requires ./SyntaxError.js
+ */
+module.exports = loader

uniapp/uni-app/node_modules/postcss-loader/src/options.js

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+/**
+ * **PostCSS Options Parser**
+ *
+ * Transforms the loader options into a valid postcss config `{Object}`
+ *
+ * @method parseOptions
+ *
+ * @param {Boolean} exec Execute CSS-in-JS
+ * @param {String|Object} parser PostCSS Parser
+ * @param {String|Object} syntax PostCSS Syntax
+ * @param {String|Object} stringifier PostCSS Stringifier
+ * @param {Array|Object|Function} plugins PostCSS Plugins
+ *
+ * @return {Promise} PostCSS Config
+ */
+function parseOptions ({ exec, parser, syntax, stringifier, plugins }) {
+  if (typeof plugins === 'function') {
+    plugins = plugins.call(this, this)
+  }
+
+  if (typeof plugins === 'undefined') {
+    plugins = []
+  } else if (!Array.isArray(plugins)) {
+    plugins = [ plugins ]
+  }
+
+  const options = {}
+
+  options.parser = parser
+  options.syntax = syntax
+  options.stringifier = stringifier
+
+  return Promise.resolve({ options, plugins, exec })
+}
+
+module.exports = parseOptions

uniapp/uni-app/node_modules/postcss-loader/src/options.json

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+{
+  "type": "object",
+  "properties": {
+    "config": {
+      "type": "object",
+      "properties": {
+        "path": {
+          "type": "string"
+        },
+        "ctx": {
+          "type": "object"
+        }
+      },
+      "errorMessage": {
+        "properties": {
+          "ctx": "should be {Object} (https://github.com/postcss/postcss-loader#context-ctx)",
+          "path": "should be {String} (https://github.com/postcss/postcss-loader#path)"
+        }
+      },
+      "additionalProperties": false
+    },
+    "exec": {
+      "type": "boolean"
+    },
+    "parser": {
+      "type": [ "string", "object" ]
+    },
+    "syntax": {
+      "type": [ "string", "object" ]
+    },
+    "stringifier": {
+      "type": [ "string", "object" ]
+    },
+    "plugins": {
+      "anyOf": [
+        { "type": "array" },
+        { "type": "object" },
+        { "instanceof": "Function" }
+      ]
+    },
+    "sourceMap": {
+      "type": [ "string", "boolean" ]
+    }
+  },
+  "errorMessage": {
+    "properties": {
+      "exec": "should be {Boolean} (https://github.com/postcss/postcss-loader#exec)",
+      "config": "should be {Object} (https://github.com/postcss/postcss-loader#config)",
+      "parser": "should be {String|Object} (https://github.com/postcss/postcss-loader#parser)",
+      "syntax": "should be {String|Object} (https://github.com/postcss/postcss-loader#syntax)",
+      "stringifier": "should be {String|Object} (https://github.com/postcss/postcss-loader#stringifier)",
+      "plugins": "should be {Array|Object|Function} (https://github.com/postcss/postcss-loader#plugins)",
+      "sourceMap": "should be {String|Boolean} (https://github.com/postcss/postcss-loader#sourcemap)"
+    }
+  },
+  "additionalProperties": true
+}