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import { Command, CommandHelp } from './command-types.ts'import { makeIndentN, InitMap } from './utils.ts'
class HelpCategories extends InitMap<string, CommandHelp[]> {  protected init(): CommandHelp[] {    return []  }}
export function* helpLines(  command: Command<any, any>,  cmdPath: readonly string[],): Generator<string, void, unknown> {  const catMap = new HelpCategories()  for (const item of command.help(cmdPath)) {    catMap.get(item.category).push(item)  }
  for (const [category, items] of catMap) {    yield category + ':'
    for (const { title, description } of items) {      yield* makeIndentN(title, 2)      if (description) yield* makeIndentN(description, 4)    }  }}
export const help = (  command: Command<any, any>,  cmdPath: readonly string[],): string => [...helpLines(command, cmdPath)].join('\n')
export default help