twada / offset-sourcemap-lines Goto Github PK

//very-long-file.min.js 
....

//another-file.min.js
...

//my-file-with-sourcemaps.min.js                            <--
...
//# sourceMappingURL=my-file-with-sourcemaps.min.js.map      <--

//yet-another-file.min.js
...

var offsetLines = require('offset-sourcemap-lines');
var conv = require('convert-source-map');
var fs = require('fs');

var codeWithSourceMapComment = fs.readFileSync('ABCD.js', 'utf-8');
var sourceMap = fs.readFileSync('my-file-with-sourcemaps.min.js.map', 'utf-8');
var originalMap = conv.fromJSON(sourceMap).toObject();

var offsettedMap = offsetLines(originalMap, 19);  //

var newSourceMapComment = conv.fromObject(offsettedMap).toJSON();
fs.writeFileSync('jita.min.js2.map', newSourceMapComment);