update

1 files changed, 49 insertions, 50 deletions

diff --git a/node_modules/source-map/lib/mapping-list.js b/node_modules/source-map/lib/mapping-list.js
index 70568610..06d1274a 100644
--- a/node_modules/source-map/lib/mapping-list.js
+++ b/node_modules/source-map/lib/mapping-list.js
@@ -5,7 +5,7 @@
  * http://opensource.org/licenses/BSD-3-Clause
  */
 
-const util = require("./util");
+var util = require('./util');
 
 /**
  * Determine whether mappingB is after mappingA with respect to generated
@@ -13,68 +13,67 @@ const util = require("./util");
  */
 function generatedPositionAfter(mappingA, mappingB) {
   // Optimized for most common case
-  const lineA = mappingA.generatedLine;
-  const lineB = mappingB.generatedLine;
-  const columnA = mappingA.generatedColumn;
-  const columnB = mappingB.generatedColumn;
+  var lineA = mappingA.generatedLine;
+  var lineB = mappingB.generatedLine;
+  var columnA = mappingA.generatedColumn;
+  var columnB = mappingB.generatedColumn;
   return lineB > lineA || lineB == lineA && columnB >= columnA ||
          util.compareByGeneratedPositionsInflated(mappingA, mappingB) <= 0;
 }
 
 /**
  * A data structure to provide a sorted view of accumulated mappings in a
- * performance conscious manner. It trades a negligible overhead in general
+ * performance conscious manner. It trades a neglibable overhead in general
  * case for a large speedup in case of mappings being added in order.
  */
-class MappingList {
-  constructor() {
-    this._array = [];
-    this._sorted = true;
-    // Serves as infimum
-    this._last = {generatedLine: -1, generatedColumn: 0};
-  }
+function MappingList() {
+  this._array = [];
+  this._sorted = true;
+  // Serves as infimum
+  this._last = {generatedLine: -1, generatedColumn: 0};
+}
 
-  /**
-   * Iterate through internal items. This method takes the same arguments that
-   * `Array.prototype.forEach` takes.
-   *
-   * NOTE: The order of the mappings is NOT guaranteed.
-   */
-  unsortedForEach(aCallback, aThisArg) {
+/**
+ * Iterate through internal items. This method takes the same arguments that
+ * `Array.prototype.forEach` takes.
+ *
+ * NOTE: The order of the mappings is NOT guaranteed.
+ */
+MappingList.prototype.unsortedForEach =
+  function MappingList_forEach(aCallback, aThisArg) {
     this._array.forEach(aCallback, aThisArg);
-  }
+  };
 
-  /**
-   * Add the given source mapping.
-   *
-   * @param Object aMapping
-   */
-  add(aMapping) {
-    if (generatedPositionAfter(this._last, aMapping)) {
-      this._last = aMapping;
-      this._array.push(aMapping);
-    } else {
-      this._sorted = false;
-      this._array.push(aMapping);
-    }
+/**
+ * Add the given source mapping.
+ *
+ * @param Object aMapping
+ */
+MappingList.prototype.add = function MappingList_add(aMapping) {
+  if (generatedPositionAfter(this._last, aMapping)) {
+    this._last = aMapping;
+    this._array.push(aMapping);
+  } else {
+    this._sorted = false;
+    this._array.push(aMapping);
   }
+};
 
-  /**
-   * Returns the flat, sorted array of mappings. The mappings are sorted by
-   * generated position.
-   *
-   * WARNING: This method returns internal data without copying, for
-   * performance. The return value must NOT be mutated, and should be treated as
-   * an immutable borrow. If you want to take ownership, you must make your own
-   * copy.
-   */
-  toArray() {
-    if (!this._sorted) {
-      this._array.sort(util.compareByGeneratedPositionsInflated);
-      this._sorted = true;
-    }
-    return this._array;
+/**
+ * Returns the flat, sorted array of mappings. The mappings are sorted by
+ * generated position.
+ *
+ * WARNING: This method returns internal data without copying, for
+ * performance. The return value must NOT be mutated, and should be treated as
+ * an immutable borrow. If you want to take ownership, you must make your own
+ * copy.
+ */
+MappingList.prototype.toArray = function MappingList_toArray() {
+  if (!this._sorted) {
+    this._array.sort(util.compareByGeneratedPositionsInflated);
+    this._sorted = true;
   }
-}
+  return this._array;
+};
 
 exports.MappingList = MappingList;