babel-generator - npm Package Compare versions

Comparing version 6.6.5 to 6.7.0

lib/generators/types.js

@@ -27,2 +27,12 @@ /* eslint max-len: 0 */
 function Identifier(node) {
+  // FIXME: We hang variance off Identifer to support Flow's def-site variance.
+  // This is a terrible hack, but changing type annotations to use a new,
+  // dedicated node would be a breaking change. This should be cleaned up in
+  // the next major.
+  if (node.variance === "plus") {
+    this.push("+");
+  } else if (node.variance === "minus") {
+    this.push("-");
+  }
+
   this.push(node.name);
@@ -29,0 +39,0 @@ }

lib/index.js

@@ -79,3 +79,3 @@ "use strict";
     var style = "  ";
-    if (code) {
+    if (code && typeof code === "string") {
       var _indent = _detectIndent2["default"](code).indent;
@@ -82,0 +82,0 @@ if (_indent && _indent !== " ") style = _indent;

lib/source-map.js

@@ -5,2 +5,4 @@ "use strict";
 
+var _Object$keys = require("babel-runtime/core-js/object/keys")["default"];
+
 var _interopRequireDefault = require("babel-runtime/helpers/interop-require-default")["default"];
@@ -26,2 +28,6 @@
   function SourceMap(position, opts, code) {
+    // istanbul ignore next
+
+    var _this = this;
+
     _classCallCheck(this, SourceMap);
@@ -39,3 +45,9 @@
 
-      this.map.setSourceContent(opts.sourceFileName, code);
+      if (typeof code === "string") {
+        this.map.setSourceContent(opts.sourceFileName, code);
+      } else if (typeof code === "object") {
+        _Object$keys(code).forEach(function (sourceFileName) {
+          _this.map.setSourceContent(sourceFileName, code[sourceFileName]);
+        });
+      }
     } else {
@@ -90,3 +102,3 @@ this.map = null;
     this.last = {
-      source: this.opts.sourceFileName,
+      source: loc.filename || this.opts.sourceFileName,
       generated: generated,
@@ -93,0 +105,0 @@ original: original

package.json

 {
   "name": "babel-generator",
-  "version": "6.6.5",
+  "version": "6.7.0",
   "description": "Turns an AST into code.",
@@ -16,3 +16,3 @@ "author": "Sebastian McKenzie <[e-mail]>",
     "babel-runtime": "^5.0.0",
-    "babel-types": "^6.6.5",
+    "babel-types": "^6.7.0",
     "detect-indent": "^3.0.1",
@@ -27,4 +27,4 @@ "is-integer": "^1.0.4",
     "babel-helper-fixtures": "^6.6.5",
-    "babylon": "^6.6.5"
+    "babylon": "^6.7.0"
   }
 }

README.md

@@ -47,2 +47,39 @@ # babel-generator
 sourceRoot             | string   |                 | A root for all relative URLs in the source map
-sourceFileName         | string   |                 | The filename for the source code (i.e. the code in the `code` argument)
+sourceFileName         | string   |                 | The filename for the source code (i.e. the code in the `code` argument).  This will only be used if `code` is a string.
+
+## AST from Multiple Sources
+
+In most cases, Babel does a 1:1 transformation of input-file to output-file.  However,
+you may be dealing with AST constructed from multiple sources - JS files, templates, etc.
+If this is the case, and you want the sourcemaps to reflect the correct sources, you'll need
+to make some changes to your code.
+
+First, each node with a `loc` property (which indicates that node's original placement in the
+source document) must also include a `loc.filename` property, set to the source filename.
+
+Second, you should pass an object to `generate` as the `code` parameter.  Keys
+should be the source filenames, and values should be the source content.
+
+Here's an example of what that might look like:
+
+```js
+import {parse} from 'babylon';
+import traverse from "babel-traverse";
+import generate from 'babel-generator';
+
+const a = 'var a = 1;';
+const b = 'var b = 2;';
+const astA = parse(a, { filename: 'a.js' });
+const astB = parse(b, { filename: 'b.js' });
+const ast = {
+  type: 'Program',
+  body: [].concat(astA.body, ast2.body)
+};
+
+const { code, map } = generate(ast, { /* options */ }, {
+  'a.js': a,
+  'b.js': b
+});
+
+// Sourcemap will point to both a.js and b.js where appropriate.
+```

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Improved metrics

Total package byte prevSize

87099

increased by2.41%

Lines of code

2632

increased by0.69%

Number of lines in readme file

85

increased by77.08%

Dependency changes

• Updatedbabel-types@^6.7.0