1 files changed, 145 insertions, 0 deletions
diff --git a/node_modules/snapdragon/lib/source-maps.js b/node_modules/snapdragon/lib/source-maps.js
new file mode 100644
index 0000000..d8e638b
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+++ b/node_modules/snapdragon/lib/source-maps.js
@@ -0,0 +1,145 @@
+'use strict';
+
+var fs = require('fs');
+var path = require('path');
+var define = require('define-property');
+var utils = require('./utils');
+
+/**
+ * Expose `mixin()`.
+ * This code is based on `source-maps-support.js` in reworkcss/css
+ * https://github.com/reworkcss/css/blob/master/lib/stringify/source-map-support.js
+ * Copyright (c) 2012 TJ Holowaychuk <tj@vision-media.ca>
+ */
+
+module.exports = mixin;
+
+/**
+ * Mixin source map support into `compiler`.
+ *
+ * @param {Object} `compiler`
+ * @api public
+ */
+
+function mixin(compiler) {
+  define(compiler, '_comment', compiler.comment);
+  compiler.map = new utils.SourceMap.SourceMapGenerator();
+  compiler.position = { line: 1, column: 1 };
+  compiler.content = {};
+  compiler.files = {};
+
+  for (var key in exports) {
+    define(compiler, key, exports[key]);
+  }
+}
+
+/**
+ * Update position.
+ *
+ * @param {String} str
+ */
+
+exports.updatePosition = function(str) {
+  var lines = str.match(/\n/g);
+  if (lines) this.position.line += lines.length;
+  var i = str.lastIndexOf('\n');
+  this.position.column = ~i ? str.length - i : this.position.column + str.length;
+};
+
+/**
+ * Emit `str` with `position`.
+ *
+ * @param {String} str
+ * @param {Object} [pos]
+ * @return {String}
+ */
+
+exports.emit = function(str, node) {
+  var position = node.position || {};
+  var source = position.source;
+  if (source) {
+    if (position.filepath) {
+      source = utils.unixify(position.filepath);
+    }
+
+    this.map.addMapping({
+      source: source,
+      generated: {
+        line: this.position.line,
+        column: Math.max(this.position.column - 1, 0)
+      },
+      original: {
+        line: position.start.line,
+        column: position.start.column - 1
+      }
+    });
+
+    if (position.content) {
+      this.addContent(source, position);
+    }
+    if (position.filepath) {
+      this.addFile(source, position);
+    }
+
+    this.updatePosition(str);
+    this.output += str;
+  }
+  return str;
+};
+
+/**
+ * Adds a file to the source map output if it has not already been added
+ * @param {String} `file`
+ * @param {Object} `pos`
+ */
+
+exports.addFile = function(file, position) {
+  if (typeof position.content !== 'string') return;
+  if (Object.prototype.hasOwnProperty.call(this.files, file)) return;
+  this.files[file] = position.content;
+};
+
+/**
+ * Adds a content source to the source map output if it has not already been added
+ * @param {String} `source`
+ * @param {Object} `position`
+ */
+
+exports.addContent = function(source, position) {
+  if (typeof position.content !== 'string') return;
+  if (Object.prototype.hasOwnProperty.call(this.content, source)) return;
+  this.map.setSourceContent(source, position.content);
+};
+
+/**
+ * Applies any original source maps to the output and embeds the source file
+ * contents in the source map.
+ */
+
+exports.applySourceMaps = function() {
+  Object.keys(this.files).forEach(function(file) {
+    var content = this.files[file];
+    this.map.setSourceContent(file, content);
+
+    if (this.options.inputSourcemaps === true) {
+      var originalMap = utils.sourceMapResolve.resolveSync(content, file, fs.readFileSync);
+      if (originalMap) {
+        var map = new utils.SourceMap.SourceMapConsumer(originalMap.map);
+        var relativeTo = originalMap.sourcesRelativeTo;
+        this.map.applySourceMap(map, file, utils.unixify(path.dirname(relativeTo)));
+      }
+    }
+  }, this);
+};
+
+/**
+ * Process comments, drops sourceMap comments.
+ * @param {Object} node
+ */
+
+exports.comment = function(node) {
+  if (/^# sourceMappingURL=/.test(node.comment)) {
+    return this.emit('', node.position);
+  }
+  return this._comment(node);
+};