Method expForLevel

app/models/User.js:391–393

(level)

    // x = b * e^((y-1)/a) - c
    static expForLevel (level) {
      if (level > 1) { return Math.ceil((Math.exp((level - 1) / a) * b) - c) } else { return 0 }
    }

    static tierFromLevel (level) {
      // TODO: math