Fix.

node_modules/snapdragon/lib/compiler.js

@@ -0,0 +1,177 @@
+'use strict';
+
+var use = require('use');
+var define = require('define-property');
+var debug = require('debug')('snapdragon:compiler');
+var utils = require('./utils');
+
+/**
+ * Create a new `Compiler` with the given `options`.
+ * @param {Object} `options`
+ */
+
+function Compiler(options, state) {
+  debug('initializing', __filename);
+  this.options = utils.extend({source: 'string'}, options);
+  this.state = state || {};
+  this.compilers = {};
+  this.output = '';
+  this.set('eos', function(node) {
+    return this.emit(node.val, node);
+  });
+  this.set('noop', function(node) {
+    return this.emit(node.val, node);
+  });
+  this.set('bos', function(node) {
+    return this.emit(node.val, node);
+  });
+  use(this);
+}
+
+/**
+ * Prototype methods
+ */
+
+Compiler.prototype = {
+
+  /**
+   * Throw an error message with details including the cursor position.
+   * @param {String} `msg` Message to use in the Error.
+   */
+
+  error: function(msg, node) {
+    var pos = node.position || {start: {column: 0}};
+    var message = this.options.source + ' column:' + pos.start.column + ': ' + msg;
+
+    var err = new Error(message);
+    err.reason = msg;
+    err.column = pos.start.column;
+    err.source = this.pattern;
+
+    if (this.options.silent) {
+      this.errors.push(err);
+    } else {
+      throw err;
+    }
+  },
+
+  /**
+   * Define a non-enumberable property on the `Compiler` instance.
+   *
+   * ```js
+   * compiler.define('foo', 'bar');
+   * ```
+   * @name .define
+   * @param {String} `key` propery name
+   * @param {any} `val` property value
+   * @return {Object} Returns the Compiler instance for chaining.
+   * @api public
+   */
+
+  define: function(key, val) {
+    define(this, key, val);
+    return this;
+  },
+
+  /**
+   * Emit `node.val`
+   */
+
+  emit: function(str, node) {
+    this.output += str;
+    return str;
+  },
+
+  /**
+   * Add a compiler `fn` with the given `name`
+   */
+
+  set: function(name, fn) {
+    this.compilers[name] = fn;
+    return this;
+  },
+
+  /**
+   * Get compiler `name`.
+   */
+
+  get: function(name) {
+    return this.compilers[name];
+  },
+
+  /**
+   * Get the previous AST node.
+   */
+
+  prev: function(n) {
+    return this.ast.nodes[this.idx - (n || 1)] || { type: 'bos', val: '' };
+  },
+
+  /**
+   * Get the next AST node.
+   */
+
+  next: function(n) {
+    return this.ast.nodes[this.idx + (n || 1)] || { type: 'eos', val: '' };
+  },
+
+  /**
+   * Visit `node`.
+   */
+
+  visit: function(node, nodes, i) {
+    var fn = this.compilers[node.type];
+    this.idx = i;
+
+    if (typeof fn !== 'function') {
+      throw this.error('compiler "' + node.type + '" is not registered', node);
+    }
+    return fn.call(this, node, nodes, i);
+  },
+
+  /**
+   * Map visit over array of `nodes`.
+   */
+
+  mapVisit: function(nodes) {
+    if (!Array.isArray(nodes)) {
+      throw new TypeError('expected an array');
+    }
+    var len = nodes.length;
+    var idx = -1;
+    while (++idx < len) {
+      this.visit(nodes[idx], nodes, idx);
+    }
+    return this;
+  },
+
+  /**
+   * Compile `ast`.
+   */
+
+  compile: function(ast, options) {
+    var opts = utils.extend({}, this.options, options);
+    this.ast = ast;
+    this.parsingErrors = this.ast.errors;
+    this.output = '';
+
+    // source map support
+    if (opts.sourcemap) {
+      var sourcemaps = require('./source-maps');
+      sourcemaps(this);
+      this.mapVisit(this.ast.nodes);
+      this.applySourceMaps();
+      this.map = opts.sourcemap === 'generator' ? this.map : this.map.toJSON();
+      return this;
+    }
+
+    this.mapVisit(this.ast.nodes);
+    return this;
+  }
+};
+
+/**
+ * Expose `Compiler`
+ */
+
+module.exports = Compiler;