node_modules/postcss/lib/css-syntax-error.js - master - eb/Surf

node_modules/postcss/lib/css-syntax-error.js
300 строк24 KB
EvgeniyBudaev
Initial commit
17 фев 2020, 09:02
17 фев 2020, 09:02bb6f06f
"use strict";

exports.__esModule = true;
exports.default = void 0;

var _supportsColor = _interopRequireDefault(require("supports-color"));

var _chalk = _interopRequireDefault(require("chalk"));

var _terminalHighlight = _interopRequireDefault(require("./terminal-highlight"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; subClass.__proto__ = superClass; }

function _wrapNativeSuper(Class) { var _cache = typeof Map === "function" ? new Map() : undefined; _wrapNativeSuper = function _wrapNativeSuper(Class) { if (Class === null || !_isNativeFunction(Class)) return Class; if (typeof Class !== "function") { throw new TypeError("Super expression must either be null or a function"); } if (typeof _cache !== "undefined") { if (_cache.has(Class)) return _cache.get(Class); _cache.set(Class, Wrapper); } function Wrapper() { return _construct(Class, arguments, _getPrototypeOf(this).constructor); } Wrapper.prototype = Object.create(Class.prototype, { constructor: { value: Wrapper, enumerable: false, writable: true, configurable: true } }); return _setPrototypeOf(Wrapper, Class); }; return _wrapNativeSuper(Class); }

function isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }

function _construct(Parent, args, Class) { if (isNativeReflectConstruct()) { _construct = Reflect.construct; } else { _construct = function _construct(Parent, args, Class) { var a = [null]; a.push.apply(a, args); var Constructor = Function.bind.apply(Parent, a); var instance = new Constructor(); if (Class) _setPrototypeOf(instance, Class.prototype); return instance; }; } return _construct.apply(null, arguments); }

function _isNativeFunction(fn) { return Function.toString.call(fn).indexOf("[native code]") !== -1; }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

/**
 * The CSS parser throws this error for broken CSS.
 *
 * Custom parsers can throw this error for broken custom syntax using
 * the {@link Node#error} method.
 *
 * PostCSS will use the input source map to detect the original error location.
 * If you wrote a Sass file, compiled it to CSS and then parsed it with PostCSS,
 * PostCSS will show the original position in the Sass file.
 *
 * If you need the position in the PostCSS input
 * (e.g., to debug the previous compiler), use `error.input.file`.
 *
 * @example
 * // Catching and checking syntax error
 * try {
 *   postcss.parse('a{')
 * } catch (error) {
 *   if (error.name === 'CssSyntaxError') {
 *     error //=> CssSyntaxError
 *   }
 * }
 *
 * @example
 * // Raising error from plugin
 * throw node.error('Unknown variable', { plugin: 'postcss-vars' })
 */
var CssSyntaxError =
/*#__PURE__*/
function (_Error) {
  _inheritsLoose(CssSyntaxError, _Error);

  /**
   * @param {string} message  Error message.
   * @param {number} [line]   Source line of the error.
   * @param {number} [column] Source column of the error.
   * @param {string} [source] Source code of the broken file.
   * @param {string} [file]   Absolute path to the broken file.
   * @param {string} [plugin] PostCSS plugin name, if error came from plugin.
   */
  function CssSyntaxError(message, line, column, source, file, plugin) {
    var _this;

    _this = _Error.call(this, message) || this;
    /**
     * Always equal to `'CssSyntaxError'`. You should always check error type
     * by `error.name === 'CssSyntaxError'`
     * instead of `error instanceof CssSyntaxError`,
     * because npm could have several PostCSS versions.
     *
     * @type {string}
     *
     * @example
     * if (error.name === 'CssSyntaxError') {
     *   error //=> CssSyntaxError
     * }
     */

    _this.name = 'CssSyntaxError';
    /**
     * Error message.
     *
     * @type {string}
     *
     * @example
     * error.message //=> 'Unclosed block'
     */

    _this.reason = message;

    if (file) {
      /**
       * Absolute path to the broken file.
       *
       * @type {string}
       *
       * @example
       * error.file       //=> 'a.sass'
       * error.input.file //=> 'a.css'
       */
      _this.file = file;
    }

    if (source) {
      /**
       * Source code of the broken file.
       *
       * @type {string}
       *
       * @example
       * error.source       //=> 'a { b {} }'
       * error.input.column //=> 'a b { }'
       */
      _this.source = source;
    }

    if (plugin) {
      /**
       * Plugin name, if error came from plugin.
       *
       * @type {string}
       *
       * @example
       * error.plugin //=> 'postcss-vars'
       */
      _this.plugin = plugin;
    }

    if (typeof line !== 'undefined' && typeof column !== 'undefined') {
      /**
       * Source line of the error.
       *
       * @type {number}
       *
       * @example
       * error.line       //=> 2
       * error.input.line //=> 4
       */
      _this.line = line;
      /**
       * Source column of the error.
       *
       * @type {number}
       *
       * @example
       * error.column       //=> 1
       * error.input.column //=> 4
       */

      _this.column = column;
    }

    _this.setMessage();

    if (Error.captureStackTrace) {
      Error.captureStackTrace(_assertThisInitialized(_this), CssSyntaxError);
    }

    return _this;
  }

  var _proto = CssSyntaxError.prototype;

  _proto.setMessage = function setMessage() {
    /**
     * Full error text in the GNU error format
     * with plugin, file, line and column.
     *
     * @type {string}
     *
     * @example
     * error.message //=> 'a.css:1:1: Unclosed block'
     */
    this.message = this.plugin ? this.plugin + ': ' : '';
    this.message += this.file ? this.file : '<css input>';

    if (typeof this.line !== 'undefined') {
      this.message += ':' + this.line + ':' + this.column;
    }

    this.message += ': ' + this.reason;
  }
  /**
   * Returns a few lines of CSS source that caused the error.
   *
   * If the CSS has an input source map without `sourceContent`,
   * this method will return an empty string.
   *
   * @param {boolean} [color] Whether arrow will be colored red by terminal
   *                          color codes. By default, PostCSS will detect
   *                          color support by `process.stdout.isTTY`
   *                          and `process.env.NODE_DISABLE_COLORS`.
   *
   * @example
   * error.showSourceCode() //=> "  4 | }
   *                        //      5 | a {
   *                        //    > 6 |   bad
   *                        //        |   ^
   *                        //      7 | }
   *                        //      8 | b {"
   *
   * @return {string} Few lines of CSS source that caused the error.
   */
  ;

  _proto.showSourceCode = function showSourceCode(color) {
    var _this2 = this;

    if (!this.source) return '';
    var css = this.source;

    if (_terminalHighlight.default) {
      if (typeof color === 'undefined') color = _supportsColor.default.stdout;
      if (color) css = (0, _terminalHighlight.default)(css);
    }

    var lines = css.split(/\r?\n/);
    var start = Math.max(this.line - 3, 0);
    var end = Math.min(this.line + 2, lines.length);
    var maxWidth = String(end).length;

    function mark(text) {
      if (color && _chalk.default.red) {
        return _chalk.default.red.bold(text);
      }

      return text;
    }

    function aside(text) {
      if (color && _chalk.default.gray) {
        return _chalk.default.gray(text);
      }

      return text;
    }

    return lines.slice(start, end).map(function (line, index) {
      var number = start + 1 + index;
      var gutter = ' ' + (' ' + number).slice(-maxWidth) + ' | ';

      if (number === _this2.line) {
        var spacing = aside(gutter.replace(/\d/g, ' ')) + line.slice(0, _this2.column - 1).replace(/[^\t]/g, ' ');
        return mark('>') + aside(gutter) + line + '\n ' + spacing + mark('^');
      }

      return ' ' + aside(gutter) + line;
    }).join('\n');
  }
  /**
   * Returns error position, message and source code of the broken part.
   *
   * @example
   * error.toString() //=> "CssSyntaxError: app.css:1:1: Unclosed block
   *                  //    > 1 | a {
   *                  //        | ^"
   *
   * @return {string} Error position, message and source code.
   */
  ;

  _proto.toString = function toString() {
    var code = this.showSourceCode();

    if (code) {
      code = '\n\n' + code + '\n';
    }

    return this.name + ': ' + this.message + code;
  }
  /**
   * @memberof CssSyntaxError#
   * @member {Input} input Input object with PostCSS internal information
   *                       about input file. If input has source map
   *                       from previous tool, PostCSS will use origin
   *                       (for example, Sass) source. You can use this
   *                       object to get PostCSS input source.
   *
   * @example
   * error.input.file //=> 'a.css'
   * error.file       //=> 'a.sass'
   */
  ;

  return CssSyntaxError;
}(_wrapNativeSuper(Error));

var _default = CssSyntaxError;
exports.default = _default;
module.exports = exports.default;
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