Tiers & Capabilities

Tiers (Ordered)

type Tier = "VERY_LOW" | "LOW" | "NEUTRAL" | "HIGH" | "VERY_HIGH";

const TIER_ORDER: Record<Tier, number> = {
  VERY_LOW: 0,
  LOW: 1,
  NEUTRAL: 2,
  HIGH: 3,
  VERY_HIGH: 4,
};

function tierGte(a: Tier, b: Tier): boolean {
  return TIER_ORDER[a] >= TIER_ORDER[b];
}

Implementation Note: Never use string comparison (>=) on Tier values directly. Always use tierGte() or equivalent numeric comparison.

Capabilities (Ordered)

type Capability = "NONE" | "INTERMEDIATE" | "ADVANCED" | "EXPERT";

const CAPABILITY_ORDER: Record<Capability, number> = {
  NONE: 0,
  INTERMEDIATE: 1,
  ADVANCED: 2,
  EXPERT: 3,
};

Tier Comparison Helpers

function tierLt(a: Tier, b: Tier): boolean {
  return TIER_ORDER[a] < TIER_ORDER[b];
}

function capabilityGte(a: Capability, b: Capability): boolean {
  return CAPABILITY_ORDER[a] >= CAPABILITY_ORDER[b];
}