SebastianVerified account

I haven't posted anything about Rome in a while so here is what I worked on this evening. These are more error messages. It's obviously not all I'm working on but it's the easiest thing to tweet and discuss.

I have developed a vendetta against poor error messages. I have discovered that validating input like: function isValid(input: string): boolean; Is almost always bad. function getInvalidRange(input: string): undefined | [number, number]; Is way better.

What does that actually mean? Actually pointing to the specific range and location of invalid input rather than "there is an error in here somewhere".

Rome ingests package.json files and performs some normalization and validation. One of the fields is name. When you use a package.json name in npm or yarn that is invalid, it will just yell at you. Rome points to the exact location with some possible hints. Examples: