Fixed mapping to original file in sourcemap

[mpfau]

babel swallows the path of the source file if sourceFileName is not defined.

[guybedford]

Thanks for posting. Can you clarify a little more how this alters the source map / output?

[mpfau]

Sure! :-)

Environment:

• "systemjs": "0.19.40",
• "systemjs-builder": "0.15.33",
• "systemjs-plugin-babel": "0.0.17",

Before applying the patch, the relative path to the sources was missing for all files transpiled with plugin-babel:
"sources":["classCallCheck.js","cjs.js","es6.js"]

This made it impossible for the browser to find the original source files. The same section looks as follows, after applying the patch:
"sources":["node_modules/systemjs-plugin-babel/babel-helpers/classCallCheck.js","src/cjs.js","src/es6.js"]

[guybedford]

Sure thanks for clarifying!

[guybedford]

Released in 0.0.18.