yargs/lib/platform-shims/browser.mjs

yargs the modern, pirate-themed, successor to optimist.

'use strict'

import cliui from 'https://unpkg.com/cliui@7.0.1/index.mjs'
import Parser from "https://unpkg.com/yargs-parser@19.0.0/browser.js";
import { getProcessArgvBin } from '../../build/lib/utils/process-argv.js'
import { YError } from '../../build/lib/yerror.js'

const REQUIRE_ERROR = 'require is not supported in browser'
const REQUIRE_DIRECTORY_ERROR = 'loading a directory of commands is not supported in browser'

export default {
  assert: {
    notStrictEqual: (a, b) => {
      // noop.
    },
    strictEqual: (a, b) => {
      // noop.
    }
  },
  cliui,
  findUp: () => undefined,
  getEnv: (key) => {
    // There is no environment in browser:
    return undefined
  },
  inspect: console.log,
  getCallerFile: () => {
    throw new YError(REQUIRE_DIRECTORY_ERROR)
  },
  getProcessArgvBin,
  mainFilename: 'yargs',
  Parser,
  path: {
    basename: (str) => str,
    dirname: (str) => str,
    extname: (str) => str,
    relative: (str) => str
  },
  process: {
    argv: () => [],
    cwd: () => '',
    execPath: () => '',
    // exit is noop browser:
    exit: () => {},
    nextTick: (cb) => {
      window.setTimeout(cb, 1)
    },
    stdColumns: 80
  },
  readFileSync: () => {
    return ''
  },
  require: () => {
    throw new YError(REQUIRE_ERROR)
  },
  requireDirectory: () => {
    throw new YError(REQUIRE_DIRECTORY_ERROR)
  },
  stringWidth: (str) => {
    return [...str].length
  },
  // TODO: replace this with y18n once it's ported to ESM:
  y18n: {
    __: (...str) => {
      if (str.length === 0) return ''
      const args = str.slice(1)
      return sprintf(str[0], ...args)
    },
    __n: (str1, str2, count, ...args) => {
      if (count === 1) {
        return sprintf(str1, ...args)
      } else {
        return sprintf(str2, ...args)
      }
    },
    getLocale: () => {
      return 'en_US'
    },
    setLocale: () => {},
    updateLocale: () => {}
  }
}

function sprintf(_str, ...args) {
  let str = ''
  const split = _str.split('%s')
  split.forEach((token, i) => {
    str += `${token}${split[i + 1] !== undefined && args[i] ? args[i] : ''}`
  })
  return str
}