babel-generator - npm Package Compare versions

Comparing version 6.4.3 to 6.4.5

lib/generators/expressions.js

@@ -129,2 +129,3 @@ /* @flow */
   this.print(node.callee, node);
+  if (node.loc) this.printAuxAfterComment();
 
@@ -131,0 +132,0 @@ this.push("(");

lib/printer.js

@@ -89,3 +89,3 @@ "use strict";
 
-    this.map.mark(node, "start");
+    this.map.mark(node);
 
@@ -103,3 +103,3 @@ this._print(node, parent);
     this._printStack.pop();
-    this.map.mark(node, "end");
+    if (parent) this.map.mark(parent);
     if (opts.after) opts.after();
@@ -183,2 +183,6 @@
 
+        if (opts.separator && parent.loc) {
+          _this.printAuxAfterComment();
+        }
+
         if (opts.separator && i < len - 1) {
@@ -185,0 +189,0 @@ _this.push(opts.separator);

lib/source-map.js

@@ -29,2 +29,3 @@ "use strict";
     this.opts = opts;
+    this.last = { generated: {}, original: {} };
 
@@ -60,3 +61,3 @@ if (opts.sourceMaps) {
 
-  SourceMap.prototype.mark = function mark(node, type) {
+  SourceMap.prototype.mark = function mark(node) {
     var loc = node.loc;
@@ -77,9 +78,19 @@ if (!loc) return; // no location info
 
-    var original = loc[type];
+    var original = loc.start;
 
-    map.addMapping({
+    // Avoid emitting duplicates on either side. Duplicated
+    // original values creates unnecesssarily large source maps
+    // and increases compile time. Duplicates on the generated
+    // side can lead to incorrect mappings.
+    if (comparePosition(original, this.last.original) || comparePosition(generated, this.last.generated)) {
+      return;
+    }
+
+    this.last = {
       source: this.opts.sourceFileName,
       generated: generated,
       original: original
-    });
+    };
+
+    map.addMapping(this.last);
   };
@@ -91,2 +102,6 @@
 exports["default"] = SourceMap;
+
+function comparePosition(a, b) {
+  return a.line === b.line && a.column === b.column;
+}
 module.exports = exports["default"];

package.json

 {
   "name": "babel-generator",
-  "version": "6.4.3",
+  "version": "6.4.5",
   "description": "Turns an AST into code.",
@@ -16,3 +16,3 @@ "author": "Sebastian McKenzie <[e-mail]>",
     "babel-runtime": "^5.0.0",
-    "babel-types": "^6.4.3",
+    "babel-types": "^6.4.5",
     "detect-indent": "^3.0.1",
@@ -27,4 +27,4 @@ "is-integer": "^1.0.4",
     "babel-helper-fixtures": "^6.3.13",
-    "babylon": "^6.4.2"
+    "babylon": "^6.4.5"
   }
 }

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Found 1 instance in 1 package

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Worsened metrics

Total package byte prevSize

90318

decreased by-6.28%

Number of package files

21

decreased by-4.55%

Lines of code

2696

decreased by-7%

Dependency changes

• Updatedbabel-types@^6.4.5