Remove stable dependency

package.json

@@ -14,7 +14,6 @@
     "convert-source-map": "^1.1.2",
     "optimist": "^0.6.1",
     "source-map": "^0.5.3",
-    "stable": "^0.1.5",
     "stringmap": "^0.2.2",
     "stringset": "^0.2.1"
   },

src/generate-sourcemap.js

@@ -4,7 +4,7 @@ const os = require("os");
 const convertSourceMap = require("convert-source-map");
 const SourceMapConsumer = require("source-map").SourceMapConsumer;
 const SourceMapGenerator = require("source-map").SourceMapGenerator;
-const stableSort = require("stable");
+const stableSort = require("./utils").stableSort;
 
 class SourceMapper {
     constructor(src, nodePositions, fragments, inFile, sourceRoot) {

src/utils.js

@@ -0,0 +1,9 @@
+function stableSort(arr, compareFn) {
+    return arr.map((value, index) => [value, index]).sort(([a, ai], [b, bi]) => {
+        const cmp = compareFn(a, b);
+        return cmp === 0 ? ai - bi : cmp;
+    }).map(([value, _]) => value);
+}
+
+
+module.exports = { stableSort };