serverless/lib/cli/render-help/command.js

import utils from '@serverlessinc/sf-core/src/utils.js';
import renderOptionsHelp from './options.js';
import generateCommandUsage from './generate-command-usage.js';

const { writeText } = utils;

export default ({ commandName, commandsSchema }) => {
  const commandSchema = commandsSchema.get(commandName);

  if (commandSchema) {
    writeText(generateCommandUsage(commandName, commandSchema));
  }
  for (const [subCommandName, subCommandSchema] of commandsSchema) {
    if (!subCommandName.startsWith(`${commandName} `)) continue;
    writeText(generateCommandUsage(subCommandName, subCommandSchema));
  }
  if (commandSchema) renderOptionsHelp(Object.assign({}, commandSchema.options));

  writeText();
};