source-mapper - npm Package Compare versions

Comparing version 0.2.1 to 0.3.0

CHANGES.md

 # Changes
 
+## 0.3.0
+
+- Add optional `offset` parameter
+
 ## 0.2.1
@@ -4,0 +8,0 @@

lib/source-mapper.js

@@ -38,3 +38,3 @@ /*
 
-exports.line = function (consumer, line) {
+exports.line = function (consumer, line, offset) {
   return line.replace(stackRE, function (m, pre, p, nr, post) {
@@ -46,3 +46,3 @@ /*jslint unparam: true*/
     var mapped = consumer.originalPositionFor({
-      line   : Number(nr),
+      line   : Number(nr) - (offset || 0),
       column : 0
@@ -55,3 +55,3 @@ });
 
-exports.stream = function (consumer) {
+exports.stream = function (consumer, offset) {
   if (!(consumer instanceof sourceMap.SourceMapConsumer)) {
@@ -66,3 +66,3 @@ consumer = new sourceMap.SourceMapConsumer(consumer);
       if (p !== -1) {
-        this.queue(exports.line(consumer, buf.substring(0, p + 1)));
+        this.queue(exports.line(consumer, buf.substring(0, p + 1), offset));
         buf = buf.substring(p + 1);
@@ -69,0 +69,0 @@ }

package.json

 {
   "name": "source-mapper",
-  "version": "0.2.1",
+  "version": "0.3.0",
   "description": "Replace URLs in track traces with original sources",
@@ -5,0 +5,0 @@ "author": "Maximilian Antoni <[e-mail]> (http://maxantoni.de)",

README.md

 # Source Mapper
 
-Replace URLs in track traces with original sources based on [source-map][]. For
+Replace URLs in stack traces with original sources based on [source-map][]. For
 node and the browser.
@@ -26,4 +26,12 @@
   maps.
-- `stream(map)` returns a [through][] stream that replaces URLs in stack traces
-  with the original source location.
+- `consumer(map)` returns a source map consumer for the given `map`.
+- `line(consumer, line[, offset])` maps the given line to the original source
+  using a consumer. If `offset` is given, it is substracted from the line
+  number.
+- `stream(consumer[, offset])` returns a [through][] stream that replaces URLs
+  in stack traces with the original source location using a consumer. If
+  `offset` is given, it is substracted from the line number.
+- `stream(map[, offset])` returns a [through][] stream that replaces URLs in
+  stack traces with the original source location using a source map. If
+  `offset` is given, it is substracted from the line number.
 
@@ -30,0 +38,0 @@ ## Development

test/source-mapper-test.js

@@ -17,3 +17,14 @@ /*global describe, it, before, beforeEach*/
 
+function spy(obj, prop) {
+  var fn = obj[prop];
+  function s() {
+    s.calls.push(Array.prototype.slice.call(arguments));
+    return fn.apply(this, arguments);
+  }
+  s.calls = [];
+  obj[prop] = s;
+  return s;
+}
 
+
 describe('source-mapper', function () {
@@ -110,2 +121,21 @@ var js;
 
+  it('passes line number minus offset to consumer (line)', function () {
+    var s = spy(c, 'originalPositionFor');
+
+    mapper.line(c, 'about:blank:12', 7);
+
+    assert.equal(s.calls.length, 1);
+    assert.equal(s.calls[0][0].line, 5);
+  });
+
+  it('passes line number minus offset to consumer (stream)', function () {
+    var s = spy(c, 'originalPositionFor');
+
+    var stream = mapper.stream(c, 7);
+    stream.write('about:blank:12\n');
+
+    assert.equal(s.calls.length, 1);
+    assert.equal(s.calls[0][0].line, 5);
+  });
+
 });

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Improved metrics

Total package byte prevSize

9035

increased by17.7%

Lines of code

176

increased by15.03%

Number of lines in readme file

52

increased by18.18%

No dependency changes