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type ArrayOneOrMore<T> = {  0: T} & Array<T>
export type Value =  | {    type: 'rand'    value: [Value, Value]  }  | {    type: 'pick'    value: ArrayOneOrMore<Value>  }  | {    type: 'seq'    value: ArrayOneOrMore<Value>  }  | number
export const value = (v: Value, index: number): number => {  if (typeof v === 'number') {    return v  }
  if (v.type === 'rand') {    return value(v.value[0], index) +      Math.random() * (value(v.value[1], index) - value(v.value[0], index))  } else if (v.type === 'seq') {    return value(v.value[index % v.value.length], index)  }
  return value(v.value[Math.floor(Math.random() * v.value.length)], index)}
export const seq = (values: ArrayOneOrMore<Value>): Value => {  return {    type: 'seq',    value: values,  }}
export const pick = (values: ArrayOneOrMore<Value>): Value => {  return {    type: 'pick',    value: values,  }}
export const rand = (from: Value, to: Value): Value => {  return {    type: 'rand',    value: [from, to],  }}