FM / lib

/home/techb158/balavpn.abdallabala.com/node_modules/js-yaml/lib/

/home/techb158/balavpn.abdallabala.com/node_modules/js-yaml/lib

Name	Size	Mode	Actions
schema/	-	0777	rm
type/	-	0777	rm
common.js	1094	0666	edit dl rm
dumper.js	30967	0666	edit dl rm
exception.js	1285	0666	edit dl rm
index_vite_proxy.tmp.mjs	434	0666	edit dl rm
loader.js	50665	0666	edit dl rm
schema.js	3257	0666	edit dl rm
snippet.js	3063	0666	edit dl rm
type.js	1736	0666	edit dl rm

Edit: /home/techb158/balavpn.abdallabala.com/node_modules/js-yaml/lib/dumper.js (30967B)

'use strict'

const common = require('./common')
const YAMLException = require('./exception')
const DEFAULT_SCHEMA = require('./schema/default')

const _toString = Object.prototype.toString
const _hasOwnProperty = Object.prototype.hasOwnProperty

const CHAR_BOM = 0xFEFF
const CHAR_TAB = 0x09 /* Tab */
const CHAR_LINE_FEED = 0x0A /* LF */
const CHAR_CARRIAGE_RETURN = 0x0D /* CR */
const CHAR_SPACE = 0x20 /* Space */
const CHAR_EXCLAMATION = 0x21 /* ! */
const CHAR_DOUBLE_QUOTE = 0x22 /* " */
const CHAR_SHARP = 0x23 /* # */
const CHAR_PERCENT = 0x25 /* % */
const CHAR_AMPERSAND = 0x26 /* & */
const CHAR_SINGLE_QUOTE = 0x27 /* ' */
const CHAR_ASTERISK = 0x2A /* * */
const CHAR_COMMA = 0x2C /* , */
const CHAR_MINUS = 0x2D /* - */
const CHAR_COLON = 0x3A /* : */
const CHAR_EQUALS = 0x3D /* = */
const CHAR_GREATER_THAN = 0x3E /* > */
const CHAR_QUESTION = 0x3F /* ? */
const CHAR_COMMERCIAL_AT = 0x40 /* @ */
const CHAR_LEFT_SQUARE_BRACKET = 0x5B /* [ */
const CHAR_RIGHT_SQUARE_BRACKET = 0x5D /* ] */
const CHAR_GRAVE_ACCENT = 0x60 /* ` */
const CHAR_LEFT_CURLY_BRACKET = 0x7B /* { */
const CHAR_VERTICAL_LINE = 0x7C /* | */
const CHAR_RIGHT_CURLY_BRACKET = 0x7D /* } */

const ESCAPE_SEQUENCES = {}

ESCAPE_SEQUENCES[0x00] = '\\0'
ESCAPE_SEQUENCES[0x07] = '\\a'
ESCAPE_SEQUENCES[0x08] = '\\b'
ESCAPE_SEQUENCES[0x09] = '\\t'
ESCAPE_SEQUENCES[0x0A] = '\\n'
ESCAPE_SEQUENCES[0x0B] = '\\v'
ESCAPE_SEQUENCES[0x0C] = '\\f'
ESCAPE_SEQUENCES[0x0D] = '\\r'
ESCAPE_SEQUENCES[0x1B] = '\\e'
ESCAPE_SEQUENCES[0x22] = '\\"'
ESCAPE_SEQUENCES[0x5C] = '\\\\'
ESCAPE_SEQUENCES[0x85] = '\\N'
ESCAPE_SEQUENCES[0xA0] = '\\_'
ESCAPE_SEQUENCES[0x2028] = '\\L'
ESCAPE_SEQUENCES[0x2029] = '\\P'

const DEPRECATED_BOOLEANS_SYNTAX = [
  'y', 'Y', 'yes', 'Yes', 'YES', 'on', 'On', 'ON',
  'n', 'N', 'no', 'No', 'NO', 'off', 'Off', 'OFF'
]

const DEPRECATED_BASE60_SYNTAX = /^[-+]?[0-9_]+(?::[0-9_]+)+(?:\.[0-9_]*)?$/

function compileStyleMap (schema, map) {
  if (map === null) return {}

const result = {}
  const keys = Object.keys(map)

for (let index = 0, length = keys.length; index < length; index += 1) {
    let tag = keys[index]
    let style = String(map[tag])

if (tag.slice(0, 2) === '!!') {
      tag = 'tag:yaml.org,2002:' + tag.slice(2)
    }
    const type = schema.compiledTypeMap['fallback'][tag]

if (type && _hasOwnProperty.call(type.styleAliases, style)) {
      style = type.styleAliases[style]
    }

result[tag] = style
  }

return result
}

function encodeHex (character) {
  let handle
  let length

const string = character.toString(16).toUpperCase()

if (character <= 0xFF) {
    handle = 'x'
    length = 2
  } else if (character <= 0xFFFF) {
    handle = 'u'
    length = 4
  } else if (character <= 0xFFFFFFFF) {
    handle = 'U'
    length = 8
  } else {
    throw new YAMLException('code point within a string may not be greater than 0xFFFFFFFF')
  }

return '\\' + handle + common.repeat('0', length - string.length) + string
}

const QUOTING_TYPE_SINGLE = 1
const QUOTING_TYPE_DOUBLE = 2

function State (options) {
  this.schema = options['schema'] || DEFAULT_SCHEMA
  this.indent = Math.max(1, (options['indent'] || 2))
  this.noArrayIndent = options['noArrayIndent'] || false
  this.skipInvalid = options['skipInvalid'] || false
  this.flowLevel = (common.isNothing(options['flowLevel']) ? -1 : options['flowLevel'])
  this.styleMap = compileStyleMap(this.schema, options['styles'] || null)
  this.sortKeys = options['sortKeys'] || false
  this.lineWidth = options['lineWidth'] || 80
  this.noRefs = options['noRefs'] || false
  this.noCompatMode = options['noCompatMode'] || false
  this.condenseFlow = options['condenseFlow'] || false
  this.quotingType = options['quotingType'] === '"' ? QUOTING_TYPE_DOUBLE : QUOTING_TYPE_SINGLE
  this.forceQuotes = options['forceQuotes'] || false
  this.replacer = typeof options['replacer'] === 'function' ? options['replacer'] : null

this.implicitTypes = this.schema.compiledImplicit
  this.explicitTypes = this.schema.compiledExplicit

this.tag = null
  this.result = ''

this.duplicates = []
  this.usedDuplicates = null
}

// Indents every line in a string. Empty lines (\n only) are not indented.
function indentString (string, spaces) {
  const ind = common.repeat(' ', spaces)
  let position = 0
  let result = ''
  const length = string.length

while (position < length) {
    let line
    const next = string.indexOf('\n', position)
    if (next === -1) {
      line = string.slice(position)
      position = length
    } else {
      line = string.slice(position, next + 1)
      position = next + 1
    }

if (line.length && line !== '\n') result += ind

result += line
  }

return result
}

function generateNextLine (state, level) {
  return '\n' + common.repeat(' ', state.indent * level)
}

function testImplicitResolving (state, str) {
  for (let index = 0, length = state.implicitTypes.length; index < length; index += 1) {
    const type = state.implicitTypes[index]

if (type.resolve(str)) {
      return true
    }
  }

return false
}

// [33] s-white ::= s-space | s-tab
function isWhitespace (c) {
  return c === CHAR_SPACE || c === CHAR_TAB
}

// Returns true if the character can be printed without escaping.
// From YAML 1.2: "any allowed characters known to be non-printable
// should also be escaped. [However,] This isn’t mandatory"
// Derived from nb-char - \t - #x85 - #xA0 - #x2028 - #x2029.
function isPrintable (c) {
  return (c >= 0x00020 && c <= 0x00007E) ||
    ((c >= 0x000A1 && c <= 0x00D7FF) && c !== 0x2028 && c !== 0x2029) ||
    ((c >= 0x0E000 && c <= 0x00FFFD) && c !== CHAR_BOM) ||
    (c >= 0x10000 && c <= 0x10FFFF)
}

// [34] ns-char ::= nb-char - s-white
// [27] nb-char ::= c-printable - b-char - c-byte-order-mark
// [26] b-char  ::= b-line-feed | b-carriage-return
// Including s-white (for some reason, examples doesn't match specs in this aspect)
// ns-char ::= c-printable - b-line-feed - b-carriage-return - c-byte-order-mark
function isNsCharOrWhitespace (c) {
  return isPrintable(c) &&
    c !== CHAR_BOM &&
    // - b-char
    c !== CHAR_CARRIAGE_RETURN &&
    c !== CHAR_LINE_FEED
}

// [127]  ns-plain-safe(c) ::= c = flow-out  ⇒ ns-plain-safe-out
//                             c = flow-in   ⇒ ns-plain-safe-in
//                             c = block-key ⇒ ns-plain-safe-out
//                             c = flow-key  ⇒ ns-plain-safe-in
// [128] ns-plain-safe-out ::= ns-char
// [129]  ns-plain-safe-in ::= ns-char - c-flow-indicator
// [130]  ns-plain-char(c) ::=  ( ns-plain-safe(c) - “:” - “#” )
//                            | ( /* An ns-char preceding */ “#” )
//                            | ( “:” /* Followed by an ns-plain-safe(c) */ )
function isPlainSafe (c, prev, inblock) {
  const cIsNsCharOrWhitespace = isNsCharOrWhitespace(c)
  const cIsNsChar = cIsNsCharOrWhitespace && !isWhitespace(c)
  return (
    (
      // ns-plain-safe
      inblock // c = flow-in
        ? cIsNsCharOrWhitespace
        : cIsNsCharOrWhitespace &&
          // - c-flow-indicator
          c !== CHAR_COMMA &&
          c !== CHAR_LEFT_SQUARE_BRACKET &&
          c !== CHAR_RIGHT_SQUARE_BRACKET &&
          c !== CHAR_LEFT_CURLY_BRACKET &&
          c !== CHAR_RIGHT_CURLY_BRACKET
    ) &&
    // ns-plain-char
    c !== CHAR_SHARP && // false on '#'
    !(prev === CHAR_COLON && !cIsNsChar)
  ) || // false on ': '
  (isNsCharOrWhitespace(prev) && !isWhitespace(prev) && c === CHAR_SHARP) || // change to true on '[^ ]#'
  (prev === CHAR_COLON && cIsNsChar) // change to true on ':[^ ]'
}

// Simplified test for values allowed as the first character in plain style.
function isPlainSafeFirst (c) {
  // Uses a subset of ns-char - c-indicator
  // where ns-char = nb-char - s-white.
  // No support of ( ( “?” | “:” | “-” ) /* Followed by an ns-plain-safe(c)) */ ) part
  return isPrintable(c) &&
    c !== CHAR_BOM &&
    !isWhitespace(c) && // - s-white
    // - (c-indicator ::=
    // “-” | “?” | “:” | “,” | “[” | “]” | “{” | “}”
    c !== CHAR_MINUS &&
    c !== CHAR_QUESTION &&
    c !== CHAR_COLON &&
    c !== CHAR_COMMA &&
    c !== CHAR_LEFT_SQUARE_BRACKET &&
    c !== CHAR_RIGHT_SQUARE_BRACKET &&
    c !== CHAR_LEFT_CURLY_BRACKET &&
    c !== CHAR_RIGHT_CURLY_BRACKET &&
    // | “#” | “&” | “*” | “!” | “|” | “=” | “>” | “'” | “"”
    c !== CHAR_SHARP &&
    c !== CHAR_AMPERSAND &&
    c !== CHAR_ASTERISK &&
    c !== CHAR_EXCLAMATION &&
    c !== CHAR_VERTICAL_LINE &&
    c !== CHAR_EQUALS &&
    c !== CHAR_GREATER_THAN &&
    c !== CHAR_SINGLE_QUOTE &&
    c !== CHAR_DOUBLE_QUOTE &&
    // | “%” | “@” | “`”)
    c !== CHAR_PERCENT &&
    c !== CHAR_COMMERCIAL_AT &&
    c !== CHAR_GRAVE_ACCENT
}

// Simplified test for values allowed as the last character in plain style.
function isPlainSafeLast (c) {
  // just not whitespace or colon, it will be checked to be plain character later
  return !isWhitespace(c) && c !== CHAR_COLON
}

// Same as 'string'.codePointAt(pos), but works in older browsers.
function codePointAt (string, pos) {
  const first = string.charCodeAt(pos)
  let second

if (first >= 0xD800 && first <= 0xDBFF && pos + 1 < string.length) {
    second = string.charCodeAt(pos + 1)
    if (second >= 0xDC00 && second <= 0xDFFF) {
      // https://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
      return (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000
    }
  }
  return first
}

// Determines whether block indentation indicator is required.
function needIndentIndicator (string) {
  const leadingSpaceRe = /^\n* /
  return leadingSpaceRe.test(string)
}

const STYLE_PLAIN = 1
const STYLE_SINGLE = 2
const STYLE_LITERAL = 3
const STYLE_FOLDED = 4
const STYLE_DOUBLE = 5

// Determines which scalar styles are possible and returns the preferred style.
// lineWidth = -1 => no limit.
// Pre-conditions: str.length > 0.
// Post-conditions:
//    STYLE_PLAIN or STYLE_SINGLE => no \n are in the string.
//    STYLE_LITERAL => no lines are suitable for folding (or lineWidth is -1).
//    STYLE_FOLDED => a line > lineWidth and can be folded (and lineWidth != -1).
function chooseScalarStyle (string, singleLineOnly, indentPerLevel, lineWidth,
  testAmbiguousType, quotingType, forceQuotes, inblock) {
  let i
  let char = 0
  let prevChar = null
  let hasLineBreak = false
  let hasFoldableLine = false // only checked if shouldTrackWidth
  const shouldTrackWidth = lineWidth !== -1
  let previousLineBreak = -1 // count the first line correctly
  let plain = isPlainSafeFirst(codePointAt(string, 0)) &&
    isPlainSafeLast(codePointAt(string, string.length - 1))

if (singleLineOnly || forceQuotes) {
    // Case: no block styles.
    // Check for disallowed characters to rule out plain and single.
    for (i = 0; i < string.length; char >= 0x10000 ? i += 2 : i++) {
      char = codePointAt(string, i)
      if (!isPrintable(char)) {
        return STYLE_DOUBLE
      }
      plain = plain && isPlainSafe(char, prevChar, inblock)
      prevChar = char
    }
  } else {
    // Case: block styles permitted.
    for (i = 0; i < string.length; char >= 0x10000 ? i += 2 : i++) {
      char = codePointAt(string, i)
      if (char === CHAR_LINE_FEED) {
        hasLineBreak = true
        // Check if any line can be folded.
        if (shouldTrackWidth) {
          hasFoldableLine = hasFoldableLine ||
            // Foldable line = too long, and not more-indented.
            (i - previousLineBreak - 1 > lineWidth &&
             string[previousLineBreak + 1] !== ' ')
          previousLineBreak = i
        }
      } else if (!isPrintable(char)) {
        return STYLE_DOUBLE
      }
      plain = plain && isPlainSafe(char, prevChar, inblock)
      prevChar = char
    }
    // in case the end is missing a \n
    hasFoldableLine = hasFoldableLine || (shouldTrackWidth &&
      (i - previousLineBreak - 1 > lineWidth &&
       string[previousLineBreak + 1] !== ' '))
  }
  // Although every style can represent \n without escaping, prefer block styles
  // for multiline, since they're more readable and they don't add empty lines.
  // Also prefer folding a super-long line.
  if (!hasLineBreak && !hasFoldableLine) {
    // Strings interpretable as another type have to be quoted;
    // e.g. the string 'true' vs. the boolean true.
    if (plain && !forceQuotes && !testAmbiguousType(string)) {
      return STYLE_PLAIN
    }
    return quotingType === QUOTING_TYPE_DOUBLE ? STYLE_DOUBLE : STYLE_SINGLE
  }
  // Edge case: block indentation indicator can only have one digit.
  if (indentPerLevel > 9 && needIndentIndicator(string)) {
    return STYLE_DOUBLE
  }
  // At this point we know block styles are valid.
  // Prefer literal style unless we want to fold.
  if (!forceQuotes) {
    return hasFoldableLine ? STYLE_FOLDED : STYLE_LITERAL
  }
  return quotingType === QUOTING_TYPE_DOUBLE ? STYLE_DOUBLE : STYLE_SINGLE
}

// Note: line breaking/folding is implemented for only the folded style.
// NB. We drop the last trailing newline (if any) of a returned block scalar
//  since the dumper adds its own newline. This always works:
//    • No ending newline => unaffected; already using strip "-" chomping.
//    • Ending newline    => removed then restored.
//  Importantly, this keeps the "+" chomp indicator from gaining an extra line.
function writeScalar (state, string, level, iskey, inblock) {
  state.dump = (function () {
    if (string.length === 0) {
      return state.quotingType === QUOTING_TYPE_DOUBLE ? '""' : "''"
    }
    if (!state.noCompatMode) {
      if (DEPRECATED_BOOLEANS_SYNTAX.indexOf(string) !== -1 || DEPRECATED_BASE60_SYNTAX.test(string)) {
        return state.quotingType === QUOTING_TYPE_DOUBLE ? ('"' + string + '"') : ("'" + string + "'")
      }
    }

const indent = state.indent * Math.max(1, level) // no 0-indent scalars
    // As indentation gets deeper, let the width decrease monotonically
    // to the lower bound min(state.lineWidth, 40).
    // Note that this implies
    //  state.lineWidth ≤ 40 + state.indent: width is fixed at the lower bound.
    //  state.lineWidth > 40 + state.indent: width decreases until the lower bound.
    // This behaves better than a constant minimum width which disallows narrower options,
    // or an indent threshold which causes the width to suddenly increase.
    const lineWidth = (state.lineWidth === -1)
      ? -1
      : Math.max(Math.min(state.lineWidth, 40), state.lineWidth - indent)

// Without knowing if keys are implicit/explicit, assume implicit for safety.
    const singleLineOnly = iskey ||
      // No block styles in flow mode.
      (state.flowLevel > -1 && level >= state.flowLevel)
    function testAmbiguity (string) {
      return testImplicitResolving(state, string)
    }

switch (chooseScalarStyle(string, singleLineOnly, state.indent, lineWidth,
      testAmbiguity, state.quotingType, state.forceQuotes && !iskey, inblock)) {
      case STYLE_PLAIN:
        return string
      case STYLE_SINGLE:
        return "'" + string.replace(/'/g, "''") + "'"
      case STYLE_LITERAL:
        return '|' + blockHeader(string, state.indent) +
          dropEndingNewline(indentString(string, indent))
      case STYLE_FOLDED:
        return '>' + blockHeader(string, state.indent) +
          dropEndingNewline(indentString(foldString(string, lineWidth), indent))
      case STYLE_DOUBLE:
        return '"' + escapeString(string, lineWidth) + '"'
      default:
        throw new YAMLException('impossible error: invalid scalar style')
    }
  }())
}

// Pre-conditions: string is valid for a block scalar, 1 <= indentPerLevel <= 9.
function blockHeader (string, indentPerLevel) {
  const indentIndicator = needIndentIndicator(string) ? String(indentPerLevel) : ''

// note the special case: the string '\n' counts as a "trailing" empty line.
  const clip = string[string.length - 1] === '\n'
  const keep = clip && (string[string.length - 2] === '\n' || string === '\n')
  const chomp = keep ? '+' : (clip ? '' : '-')

return indentIndicator + chomp + '\n'
}

// (See the note for writeScalar.)
function dropEndingNewline (string) {
  return string[string.length - 1] === '\n' ? string.slice(0, -1) : string
}

// Note: a long line without a suitable break point will exceed the width limit.
// Pre-conditions: every char in str isPrintable, str.length > 0, width > 0.
function foldString (string, width) {
  // In folded style, $k$ consecutive newlines output as $k+1$ newlines—
  // unless they're before or after a more-indented line, or at the very
  // beginning or end, in which case $k$ maps to $k$.
  // Therefore, parse each chunk as newline(s) followed by a content line.
  const lineRe = /(\n+)([^\n]*)/g

// first line (possibly an empty line)
  let result = (function () {
    let nextLF = string.indexOf('\n')
    nextLF = nextLF !== -1 ? nextLF : string.length
    lineRe.lastIndex = nextLF
    return foldLine(string.slice(0, nextLF), width)
  }())
  // If we haven't reached the first content line yet, don't add an extra \n.
  let prevMoreIndented = string[0] === '\n' || string[0] === ' '
  let moreIndented

// rest of the lines
  let match
  while ((match = lineRe.exec(string))) {
    const prefix = match[1]
    const line = match[2]

moreIndented = (line[0] === ' ')
    result += prefix +
      ((!prevMoreIndented && !moreIndented && line !== '') ? '\n' : '') +
      foldLine(line, width)
    prevMoreIndented = moreIndented
  }

return result
}

// Greedy line breaking.
// Picks the longest line under the limit each time,
// otherwise settles for the shortest line over the limit.
// NB. More-indented lines *cannot* be folded, as that would add an extra \n.
function foldLine (line, width) {
  if (line === '' || line[0] === ' ') return line

// Since a more-indented line adds a \n, breaks can't be followed by a space.
  const breakRe = / [^ ]/g // note: the match index will always be <= length-2.
  let match
  // start is an inclusive index. end, curr, and next are exclusive.
  let start = 0
  let end
  let curr = 0
  let next = 0
  let result = ''

// Invariants: 0 <= start <= length-1.
  //   0 <= curr <= next <= max(0, length-2). curr - start <= width.
  // Inside the loop:
  //   A match implies length >= 2, so curr and next are <= length-2.
  while ((match = breakRe.exec(line))) {
    next = match.index
    // maintain invariant: curr - start <= width
    if (next - start > width) {
      end = (curr > start) ? curr : next // derive end <= length-2
      result += '\n' + line.slice(start, end)
      // skip the space that was output as \n
      start = end + 1                    // derive start <= length-1
    }
    curr = next
  }

// By the invariants, start <= length-1, so there is something left over.
  // It is either the whole string or a part starting from non-whitespace.
  result += '\n'
  // Insert a break if the remainder is too long and there is a break available.
  if (line.length - start > width && curr > start) {
    result += line.slice(start, curr) + '\n' + line.slice(curr + 1)
  } else {
    result += line.slice(start)
  }

return result.slice(1) // drop extra \n joiner
}

// Escapes a double-quoted string.
function escapeString (string) {
  let result = ''
  let char = 0

for (let i = 0; i < string.length; char >= 0x10000 ? i += 2 : i++) {
    char = codePointAt(string, i)
    const escapeSeq = ESCAPE_SEQUENCES[char]

if (!escapeSeq && isPrintable(char)) {
      result += string[i]
      if (char >= 0x10000) result += string[i + 1]
    } else {
      result += escapeSeq || encodeHex(char)
    }
  }

return result
}

function writeFlowSequence (state, level, object) {
  let _result = ''
  const _tag = state.tag

for (let index = 0, length = object.length; index < length; index += 1) {
    let value = object[index]

if (state.replacer) {
      value = state.replacer.call(object, String(index), value)
    }

// Write only valid elements, put null instead of invalid elements.
    if (writeNode(state, level, value, false, false) ||
        (typeof value === 'undefined' &&
         writeNode(state, level, null, false, false))) {
      if (_result !== '') _result += ',' + (!state.condenseFlow ? ' ' : '')
      _result += state.dump
    }
  }

state.tag = _tag
  state.dump = '[' + _result + ']'
}

function writeBlockSequence (state, level, object, compact) {
  let _result = ''
  const _tag = state.tag

for (let index = 0, length = object.length; index < length; index += 1) {
    let value = object[index]

if (state.replacer) {
      value = state.replacer.call(object, String(index), value)
    }

// Write only valid elements, put null instead of invalid elements.
    if (writeNode(state, level + 1, value, true, true, false, true) ||
        (typeof value === 'undefined' &&
         writeNode(state, level + 1, null, true, true, false, true))) {
      if (!compact || _result !== '') {
        _result += generateNextLine(state, level)
      }

if (state.dump && CHAR_LINE_FEED === state.dump.charCodeAt(0)) {
        _result += '-'
      } else {
        _result += '- '
      }

_result += state.dump
    }
  }

state.tag = _tag
  state.dump = _result || '[]' // Empty sequence if no valid values.
}

function writeFlowMapping (state, level, object) {
  let _result = ''
  const _tag = state.tag
  const objectKeyList = Object.keys(object)

for (let index = 0, length = objectKeyList.length; index < length; index += 1) {
    let pairBuffer = ''
    if (_result !== '') pairBuffer += ', '

if (state.condenseFlow) pairBuffer += '"'

const objectKey = objectKeyList[index]
    let objectValue = object[objectKey]

if (state.replacer) {
      objectValue = state.replacer.call(object, objectKey, objectValue)
    }

if (!writeNode(state, level, objectKey, false, false)) {
      continue // Skip this pair because of invalid key;
    }

if (state.dump.length > 1024) pairBuffer += '? '

pairBuffer += state.dump + (state.condenseFlow ? '"' : '') + ':' + (state.condenseFlow ? '' : ' ')

if (!writeNode(state, level, objectValue, false, false)) {
      continue // Skip this pair because of invalid value.
    }

pairBuffer += state.dump

// Both key and value are valid.
    _result += pairBuffer
  }

state.tag = _tag
  state.dump = '{' + _result + '}'
}

function writeBlockMapping (state, level, object, compact) {
  let _result = ''
  const _tag = state.tag
  const objectKeyList = Object.keys(object)

// Allow sorting keys so that the output file is deterministic
  if (state.sortKeys === true) {
    // Default sorting
    objectKeyList.sort()
  } else if (typeof state.sortKeys === 'function') {
    // Custom sort function
    objectKeyList.sort(state.sortKeys)
  } else if (state.sortKeys) {
    // Something is wrong
    throw new YAMLException('sortKeys must be a boolean or a function')
  }

for (let index = 0, length = objectKeyList.length; index < length; index += 1) {
    let pairBuffer = ''

if (!compact || _result !== '') {
      pairBuffer += generateNextLine(state, level)
    }

const objectKey = objectKeyList[index]
    let objectValue = object[objectKey]

if (state.replacer) {
      objectValue = state.replacer.call(object, objectKey, objectValue)
    }

if (!writeNode(state, level + 1, objectKey, true, true, true)) {
      continue // Skip this pair because of invalid key.
    }

const explicitPair = (state.tag !== null && state.tag !== '?') ||
                   (state.dump && state.dump.length > 1024)

if (explicitPair) {
      if (state.dump && CHAR_LINE_FEED === state.dump.charCodeAt(0)) {
        pairBuffer += '?'
      } else {
        pairBuffer += '? '
      }
    }

pairBuffer += state.dump

if (explicitPair) {
      pairBuffer += generateNextLine(state, level)
    }

if (!writeNode(state, level + 1, objectValue, true, explicitPair)) {
      continue // Skip this pair because of invalid value.
    }

if (state.dump && CHAR_LINE_FEED === state.dump.charCodeAt(0)) {
      pairBuffer += ':'
    } else {
      pairBuffer += ': '
    }

pairBuffer += state.dump

// Both key and value are valid.
    _result += pairBuffer
  }

state.tag = _tag
  state.dump = _result || '{}' // Empty mapping if no valid pairs.
}

function detectType (state, object, explicit) {
  const typeList = explicit ? state.explicitTypes : state.implicitTypes

for (let index = 0, length = typeList.length; index < length; index += 1) {
    const type = typeList[index]

if ((type.instanceOf || type.predicate) &&
        (!type.instanceOf || ((typeof object === 'object') && (object instanceof type.instanceOf))) &&
        (!type.predicate || type.predicate(object))) {
      if (explicit) {
        if (type.multi && type.representName) {
          state.tag = type.representName(object)
        } else {
          state.tag = type.tag
        }
      } else {
        state.tag = '?'
      }

if (type.represent) {
        const style = state.styleMap[type.tag] || type.defaultStyle

let _result
        if (_toString.call(type.represent) === '[object Function]') {
          _result = type.represent(object, style)
        } else if (_hasOwnProperty.call(type.represent, style)) {
          _result = type.represent[style](object, style)
        } else {
          throw new YAMLException('!<' + type.tag + '> tag resolver accepts not "' + style + '" style')
        }

state.dump = _result
      }

return true
    }
  }

return false
}

// Serializes `object` and writes it to global `result`.
// Returns true on success, or false on invalid object.
//
function writeNode (state, level, object, block, compact, iskey, isblockseq) {
  state.tag = null
  state.dump = object

if (!detectType(state, object, false)) {
    detectType(state, object, true)
  }

const type = _toString.call(state.dump)
  const inblock = block

if (block) {
    block = (state.flowLevel < 0 || state.flowLevel > level)
  }

const objectOrArray = type === '[object Object]' || type === '[object Array]'
  let duplicateIndex
  let duplicate

if (objectOrArray) {
    duplicateIndex = state.duplicates.indexOf(object)
    duplicate = duplicateIndex !== -1
  }

if ((state.tag !== null && state.tag !== '?') || duplicate || (state.indent !== 2 && level > 0)) {
    compact = false
  }

if (duplicate && state.usedDuplicates[duplicateIndex]) {
    state.dump = '*ref_' + duplicateIndex
  } else {
    if (objectOrArray && duplicate && !state.usedDuplicates[duplicateIndex]) {
      state.usedDuplicates[duplicateIndex] = true
    }
    if (type === '[object Object]') {
      if (block && (Object.keys(state.dump).length !== 0)) {
        writeBlockMapping(state, level, state.dump, compact)
        if (duplicate) {
          state.dump = '&ref_' + duplicateIndex + state.dump
        }
      } else {
        writeFlowMapping(state, level, state.dump)
        if (duplicate) {
          state.dump = '&ref_' + duplicateIndex + ' ' + state.dump
        }
      }
    } else if (type === '[object Array]') {
      if (block && (state.dump.length !== 0)) {
        if (state.noArrayIndent && !isblockseq && level > 0) {
          writeBlockSequence(state, level - 1, state.dump, compact)
        } else {
          writeBlockSequence(state, level, state.dump, compact)
        }
        if (duplicate) {
          state.dump = '&ref_' + duplicateIndex + state.dump
        }
      } else {
        writeFlowSequence(state, level, state.dump)
        if (duplicate) {
          state.dump = '&ref_' + duplicateIndex + ' ' + state.dump
        }
      }
    } else if (type === '[object String]') {
      if (state.tag !== '?') {
        writeScalar(state, state.dump, level, iskey, inblock)
      }
    } else if (type === '[object Undefined]') {
      return false
    } else {
      if (state.skipInvalid) return false
      throw new YAMLException('unacceptable kind of an object to dump ' + type)
    }

if (state.tag !== null && state.tag !== '?') {
      // Need to encode all characters except those allowed by the spec:
      //
      // [35] ns-dec-digit    ::=  [#x30-#x39] /* 0-9 */
      // [36] ns-hex-digit    ::=  ns-dec-digit
      //                         | [#x41-#x46] /* A-F */ | [#x61-#x66] /* a-f */
      // [37] ns-ascii-letter ::=  [#x41-#x5A] /* A-Z */ | [#x61-#x7A] /* a-z */
      // [38] ns-word-char    ::=  ns-dec-digit | ns-ascii-letter | “-”
      // [39] ns-uri-char     ::=  “%” ns-hex-digit ns-hex-digit | ns-word-char | “#”
      //                         | “;” | “/” | “?” | “:” | “@” | “&” | “=” | “+” | “$” | “,”
      //                         | “_” | “.” | “!” | “~” | “*” | “'” | “(” | “)” | “[” | “]”
      //
      // Also need to encode '!' because it has special meaning (end of tag prefix).
      //
      let tagStr = encodeURI(
        state.tag[0] === '!' ? state.tag.slice(1) : state.tag
      ).replace(/!/g, '%21')

if (state.tag[0] === '!') {
        tagStr = '!' + tagStr
      } else if (tagStr.slice(0, 18) === 'tag:yaml.org,2002:') {
        tagStr = '!!' + tagStr.slice(18)
      } else {
        tagStr = '!<' + tagStr + '>'
      }

state.dump = tagStr + ' ' + state.dump
    }
  }

return true
}

function getDuplicateReferences (object, state) {
  const objects = []
  const duplicatesIndexes = []

inspectNode(object, objects, duplicatesIndexes)

const length = duplicatesIndexes.length
  for (let index = 0; index < length; index += 1) {
    state.duplicates.push(objects[duplicatesIndexes[index]])
  }
  state.usedDuplicates = new Array(length)
}

function inspectNode (object, objects, duplicatesIndexes) {
  if (object !== null && typeof object === 'object') {
    const index = objects.indexOf(object)
    if (index !== -1) {
      if (duplicatesIndexes.indexOf(index) === -1) {
        duplicatesIndexes.push(index)
      }
    } else {
      objects.push(object)

if (Array.isArray(object)) {
        for (let i = 0, length = object.length; i < length; i += 1) {
          inspectNode(object[i], objects, duplicatesIndexes)
        }
      } else {
        const objectKeyList = Object.keys(object)

for (let i = 0, length = objectKeyList.length; i < length; i += 1) {
          inspectNode(object[objectKeyList[i]], objects, duplicatesIndexes)
        }
      }
    }
  }
}

function dump (input, options) {
  options = options || {}

const state = new State(options)

if (!state.noRefs) getDuplicateReferences(input, state)

let value = input

if (state.replacer) {
    value = state.replacer.call({ '': value }, '', value)
  }

if (writeNode(state, 0, value, true, true)) return state.dump + '\n'

return ''
}

module.exports.dump = dump

cmd: