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// license: MIT

/**
 * usage: sql`insert into hoge values (2,${`(select json_agg(users) from users)`})` //out: ["insert into hoge values (2,$1)",["(select json_agg(users) from users)"]]
 * @template T
 * @type {(r:TemplateStringsArray,...v:T[])=>[string, T[]]}
 */
export const sql = (r,...rawValues) => {
  const valuearr = [...new Set(rawValues)]
  const values = new Map(valuearr.map((v,i) => [v,i+1]))

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export interface HElement {
  tag: string, attrs: Record<string,string>, children: (HElement|string)[], toHTML(): string, toDOM(): Element
}

export type HComponent = ((attrs:Record<string,string>,children:HElement["children"],componentUtil:HComponentUtil)=>HElement)

export interface HComponentUtil_nonPrivate {
  __nativeElement__?:Element
  __event__: {
    didMount:null|(()=>void)

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const base58Chars = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"
const base58Table = {...Object.fromEntries(Object.entries(base58Chars).map(([k,v])=>[v,BigInt(k)])),...base58Chars}

/** @param {arrayBuffer} buf */
function base58enc(buf){
    const u8 = new Uint8Array(buf)
    let int = 0n
    u8.forEach( (x,i) => int += BigInt(x * 256 ** (u8.length-1-i)) )
    let res = ""
    while (1){

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const sortJSON = o => Object.fromEntries(Object.entries(o).sort((a,b)=>a[0].charCodeAt(0) - b[0].charCodeAt(0)))

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/**
 * @example
 *   html("div",{class:"hogehoge"},[
 *     html("p",{},"i am salmon!!"),
 *     "<script>alert('raw html is not embeddable');</script>"
 *   ]);
 */
const html = (name,attrs,...children) => ((children.length==1) && void(children[0] instanceof Array) && (children=children[0])) || {name:name,attrs:attrs,children:children,toString(){return `<${this.name} ${Object.entries(this.attrs).map(([k,v])=>(void(v=v.replace(/"|'|<|>/g,([c])=>"&x"+(c.charCodeAt(0).toString(16))+";")) || `${k}=${v?.match("'") ? '"'+v+'"' : v.match(/"|[\s]/) ? "'"+v+"'" : v}`)).join(" ")}>${children.map(x=>typeof x === "string" ? x.replace(/"|'|<|>/g,([c])=>"&#x"+(c.charCodeAt(0).toString(16))+";") : x.toString()).join("")}</${name}>`}}

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const genChrs = (f,t)=>f<t ? String.fromCharCode(f++) + genChrs(f,t) : String.fromCharCode(f++)

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/**
 * @example
 * console.log($enum("A","B","C"),$enum(10)("A","B","C")) // {A:0,B:1,C:2} {A:10,B:11,C:12}
 */
export function $enum(...start){
  const mkobj=(...keys)=>Object.fromEntries(keys.map((x,i)=>[x,typeof start[0] === "number" ? start[0]+i : i]))
  return start.find(x=>typeof x !== "number") ? mkobj(...start) : mkobj
}
export default $enum;

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Array.from({length:500},(_,n)=>((i=n+1)=>(i%3==0) + (i%15==0) + (i%5==0)*2)()).map((x,i)=>x&1 ? "Fizz" : x&2 ? "Buzz" : x&4 ? "Fizz Buzz" : i+1).forEach((m)=>console.log(m))

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export type Down<A> = A extends [null, ...null[]]
  ? ((..._: A) => null) extends (_:null, ...a:infer T) => null
    ? T
    : never
  : never

export type Up<A extends null[],B extends null|null[] = null> = [...A,...(B extends null ? [B] : B)]

export type Num<N extends number,A extends null[] = []> = {
  0:A,

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type Append<T extends any[],U extends any> = [...T,U]
type range<N extends number,A extends any[]> = {
  0:range<N,Append<A,A["length"]>>,
  1:A
}[A["length"] extends N ? 1 : 0]
const nums:range<4,[]>=[0,1,2,3]
console.log(nums)