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import type { DecodeBuffer } from "./buffer.ts"import type { AnyCodec } from "./codec.ts"
export abstract class ScaleError extends Error {  constructor(readonly codec: AnyCodec, message: string) {    super(message)  }}
export class ScaleAssertError extends ScaleError {  override readonly name = "ScaleAssertError"  constructor(codec: AnyCodec, readonly value: unknown, message: string) {    super(codec, message)  }}
export class ScaleEncodeError extends ScaleError {  override readonly name = "ScaleEncodeError"  constructor(codec: AnyCodec, readonly value: unknown, message: string) {    super(codec, message)  }}
export class ScaleDecodeError extends ScaleError {  override readonly name = "ScaleDecodeError"  constructor(codec: AnyCodec, readonly buffer: DecodeBuffer, message: string) {    super(codec, message)  }}
export type Expand<T> = T extends T ? { [K in keyof T]: T[K] } : neverexport type U2I<U> = (U extends U ? (u: U) => 0 : never) extends (i: infer I) => 0 ? Extract<I, U> : never
type _Narrow<T, U> = [U] extends [T] ? U : Extract<T, U>export type Narrow<T = unknown> =  | _Narrow<T, 0 | number & {}>  | _Narrow<T, 0n | bigint & {}>  | _Narrow<T, "" | string & {}>  | _Narrow<T, boolean>  | _Narrow<T, symbol>  | _Narrow<T, []>  | _Narrow<T, { [_: PropertyKey]: Narrow }>  | (T extends object ? { [K in keyof T]: Narrow<T[K]> } : never)  | Extract<{} | null | undefined, T>