vega/vega-dataflow

Show friendlier error if a signal is undefined.

kanitw opened this issue · 1 comments

If a signal is undefined in Graph.js line 216, an Uncaught TypeError: Cannot read property 'addListener' of undefined will be thrown.

We should catch this error and produce a friendlier “Invalid Signal Name” error (or something like this) instead.

Good call. Addressed in 181939d.