What's changed

This change changes the format of the error message thrown in unreachable() to consistent with the rest of @std/assert. It also capitalizes the first letter of the error message.

Why this change was made

Previously, the format of the error message unreachable() threw didn't have the message suffix, given by the msg argument, at the end of the message string, which is what the rest of @std/assert. This change was made for consistency.

Migration guide

To migrate, update the logic that handles the error message:

import { unreachable } from "@std/assert/unreachable";

try {
  unreachable("Hello");
} catch (error) {
- if (error.message === "Hello") {
+ if (error.message === "Unreachable: Hello") {
    foo();
  }
}