I Built an npm Package to Solve a Date Validation Problem Every Enterprise Form Developer Faces

Every enterprise application I've worked on has the same quiet frustration lurking inside it. You have a form with multiple date fields. A start date, a review date, and an end date. A contract open date, an approval date, and a close date. A phase one deadline, a phase two deadline, a phase three deadline. The exact labels don't matter — the problem is always the same: these dates must be in order, and someone has to validate that. And every team I've ever seen solve this problem solves it ba