'use strict'

// Note: this is the semver.org version of the spec that it implements
// Not necessarily the package version of this code.
const SEMVER_SPEC_VERSION = '2.0.0'

const MAX_LENGTH = 256
const MAX_SAFE_INTEGER = Number.MAX_SAFE_INTEGER ||
/* istanbul ignore next */ 9007199254740991

// Max safe segment length for coercion.
const MAX_SAFE_COMPONENT_LENGTH = 16

// Max safe length for a build identifier. The max length minus 6 characters for
// the shortest version with a build 0.0.0+BUILD.
const MAX_SAFE_BUILD_LENGTH = MAX_LENGTH - 6

// ECMAScript whitespace and line terminators matched by \s.
const WHITESPACE_CHARACTERS = [
  '\t',
  '\n',
  '\v',
  '\f',
  '\r',
  ' ',
  '\u00a0',
  '\u1680',
  '\u2000',
  '\u2001',
  '\u2002',
  '\u2003',
  '\u2004',
  '\u2005',
  '\u2006',
  '\u2007',
  '\u2008',
  '\u2009',
  '\u200a',
  '\u2028',
  '\u2029',
  '\u202f',
  '\u205f',
  '\u3000',
  '\ufeff',
]

const RELEASE_TYPES = [
  'major',
  'premajor',
  'minor',
  'preminor',
  'patch',
  'prepatch',
  'prerelease',
]

module.exports = {
  MAX_LENGTH,
  MAX_SAFE_COMPONENT_LENGTH,
  MAX_SAFE_BUILD_LENGTH,
  MAX_SAFE_INTEGER,
  WHITESPACE_CHARACTERS,
  RELEASE_TYPES,
  SEMVER_SPEC_VERSION,
  FLAG_INCLUDE_PRERELEASE: 0b001,
  FLAG_LOOSE: 0b010,
}