`OBSTACLE_OBJECT_TYPES` causes `includes` argument to be too narrow, defeating the purpose of it existing.

[dyc3]

Expected Behavior

The following should work fine

OBSTACLE_OBJECT_TYPES.includes("test")

Actual Behavior

It makes ts angry >:(

Sample code (if available)

workaround

(OBSTACLE_OBJECT_TYPES as string[]).includes("test")

Your Environment

• Node.js version: v14.18.2
• TypeScript version: 4.3.5
• @types/screeps version: ^3.2.3