mozilla/source-map — pull request #7 by johnjbarton (2012-02-24 01:03:56+00:00)
Title: fix for Issue6

The original 'master' code had

if (aChunks != null) this.add(aChunks);

which uses implicit conversion. It might be ok, I do not know. On the 'umd' branch I changed it to

if (aChunks !== null) this.add(aChunks);

so that way we know what the check means. But then we need to compare to undefined.