import { __exports as beautifier } from '../../../../../../../../_virtual/beautifier3.js';
import { __require as requireOutput } from '../core/output.js';
import { __require as requireToken } from '../core/token.js';
import { __require as requireAcorn } from './acorn.js';
import { __require as requireOptions } from './options.js';
import { __require as requireTokenizer } from './tokenizer.js';

/*jshint node:true */

var hasRequiredBeautifier;

function requireBeautifier () {
	if (hasRequiredBeautifier) return beautifier;
	hasRequiredBeautifier = 1;

	var Output = requireOutput().Output;
	var Token = requireToken().Token;
	var acorn = requireAcorn();
	var Options = requireOptions().Options;
	var Tokenizer = requireTokenizer().Tokenizer;
	var line_starters = requireTokenizer().line_starters;
	var positionable_operators = requireTokenizer().positionable_operators;
	var TOKEN = requireTokenizer().TOKEN;


	function in_array(what, arr) {
	  return arr.indexOf(what) !== -1;
	}

	function ltrim(s) {
	  return s.replace(/^\s+/g, '');
	}

	function generateMapFromStrings(list) {
	  var result = {};
	  for (var x = 0; x < list.length; x++) {
	    // make the mapped names underscored instead of dash
	    result[list[x].replace(/-/g, '_')] = list[x];
	  }
	  return result;
	}

	function reserved_word(token, word) {
	  return token && token.type === TOKEN.RESERVED && token.text === word;
	}

	function reserved_array(token, words) {
	  return token && token.type === TOKEN.RESERVED && in_array(token.text, words);
	}
	// Unsure of what they mean, but they work. Worth cleaning up in future.
	var special_words = ['case', 'return', 'do', 'if', 'throw', 'else', 'await', 'break', 'continue', 'async'];

	var validPositionValues = ['before-newline', 'after-newline', 'preserve-newline'];

	// Generate map from array
	var OPERATOR_POSITION = generateMapFromStrings(validPositionValues);

	var OPERATOR_POSITION_BEFORE_OR_PRESERVE = [OPERATOR_POSITION.before_newline, OPERATOR_POSITION.preserve_newline];

	var MODE = {
	  BlockStatement: 'BlockStatement', // 'BLOCK'
	  Statement: 'Statement', // 'STATEMENT'
	  ObjectLiteral: 'ObjectLiteral', // 'OBJECT',
	  ArrayLiteral: 'ArrayLiteral', //'[EXPRESSION]',
	  ForInitializer: 'ForInitializer', //'(FOR-EXPRESSION)',
	  Conditional: 'Conditional', //'(COND-EXPRESSION)',
	  Expression: 'Expression' //'(EXPRESSION)'
	};

	function remove_redundant_indentation(output, frame) {
	  // This implementation is effective but has some issues:
	  //     - can cause line wrap to happen too soon due to indent removal
	  //           after wrap points are calculated
	  // These issues are minor compared to ugly indentation.

	  if (frame.multiline_frame ||
	    frame.mode === MODE.ForInitializer ||
	    frame.mode === MODE.Conditional) {
	    return;
	  }

	  // remove one indent from each line inside this section
	  output.remove_indent(frame.start_line_index);
	}

	// we could use just string.split, but
	// IE doesn't like returning empty strings
	function split_linebreaks(s) {
	  //return s.split(/\x0d\x0a|\x0a/);

	  s = s.replace(acorn.allLineBreaks, '\n');
	  var out = [],
	    idx = s.indexOf("\n");
	  while (idx !== -1) {
	    out.push(s.substring(0, idx));
	    s = s.substring(idx + 1);
	    idx = s.indexOf("\n");
	  }
	  if (s.length) {
	    out.push(s);
	  }
	  return out;
	}

	function is_array(mode) {
	  return mode === MODE.ArrayLiteral;
	}

	function is_expression(mode) {
	  return in_array(mode, [MODE.Expression, MODE.ForInitializer, MODE.Conditional]);
	}

	function all_lines_start_with(lines, c) {
	  for (var i = 0; i < lines.length; i++) {
	    var line = lines[i].trim();
	    if (line.charAt(0) !== c) {
	      return false;
	    }
	  }
	  return true;
	}

	function each_line_matches_indent(lines, indent) {
	  var i = 0,
	    len = lines.length,
	    line;
	  for (; i < len; i++) {
	    line = lines[i];
	    // allow empty lines to pass through
	    if (line && line.indexOf(indent) !== 0) {
	      return false;
	    }
	  }
	  return true;
	}


	function Beautifier(source_text, options) {
	  options = options || {};
	  this._source_text = source_text || '';

	  this._output = null;
	  this._tokens = null;
	  this._last_last_text = null;
	  this._flags = null;
	  this._previous_flags = null;

	  this._flag_store = null;
	  this._options = new Options(options);
	}

	Beautifier.prototype.create_flags = function(flags_base, mode) {
	  var next_indent_level = 0;
	  if (flags_base) {
	    next_indent_level = flags_base.indentation_level;
	    if (!this._output.just_added_newline() &&
	      flags_base.line_indent_level > next_indent_level) {
	      next_indent_level = flags_base.line_indent_level;
	    }
	  }

	  var next_flags = {
	    mode: mode,
	    parent: flags_base,
	    last_token: flags_base ? flags_base.last_token : new Token(TOKEN.START_BLOCK, ''), // last token text
	    last_word: flags_base ? flags_base.last_word : '', // last TOKEN.WORD passed
	    declaration_statement: false,
	    declaration_assignment: false,
	    multiline_frame: false,
	    inline_frame: false,
	    if_block: false,
	    else_block: false,
	    class_start_block: false, // class A { INSIDE HERE } or class B extends C { INSIDE HERE }
	    do_block: false,
	    do_while: false,
	    import_block: false,
	    in_case_statement: false, // switch(..){ INSIDE HERE }
	    in_case: false, // we're on the exact line with "case 0:"
	    case_body: false, // the indented case-action block
	    case_block: false, // the indented case-action block is wrapped with {}
	    indentation_level: next_indent_level,
	    alignment: 0,
	    line_indent_level: flags_base ? flags_base.line_indent_level : next_indent_level,
	    start_line_index: this._output.get_line_number(),
	    ternary_depth: 0
	  };
	  return next_flags;
	};

	Beautifier.prototype._reset = function(source_text) {
	  var baseIndentString = source_text.match(/^[\t ]*/)[0];

	  this._last_last_text = ''; // pre-last token text
	  this._output = new Output(this._options, baseIndentString);

	  // If testing the ignore directive, start with output disable set to true
	  this._output.raw = this._options.test_output_raw;


	  // Stack of parsing/formatting states, including MODE.
	  // We tokenize, parse, and output in an almost purely a forward-only stream of token input
	  // and formatted output.  This makes the beautifier less accurate than full parsers
	  // but also far more tolerant of syntax errors.
	  //
	  // For example, the default mode is MODE.BlockStatement. If we see a '{' we push a new frame of type
	  // MODE.BlockStatement on the the stack, even though it could be object literal.  If we later
	  // encounter a ":", we'll switch to to MODE.ObjectLiteral.  If we then see a ";",
	  // most full parsers would die, but the beautifier gracefully falls back to
	  // MODE.BlockStatement and continues on.
	  this._flag_store = [];
	  this.set_mode(MODE.BlockStatement);
	  var tokenizer = new Tokenizer(source_text, this._options);
	  this._tokens = tokenizer.tokenize();
	  return source_text;
	};

	Beautifier.prototype.beautify = function() {
	  // if disabled, return the input unchanged.
	  if (this._options.disabled) {
	    return this._source_text;
	  }

	  var sweet_code;
	  var source_text = this._reset(this._source_text);

	  var eol = this._options.eol;
	  if (this._options.eol === 'auto') {
	    eol = '\n';
	    if (source_text && acorn.lineBreak.test(source_text || '')) {
	      eol = source_text.match(acorn.lineBreak)[0];
	    }
	  }

	  var current_token = this._tokens.next();
	  while (current_token) {
	    this.handle_token(current_token);

	    this._last_last_text = this._flags.last_token.text;
	    this._flags.last_token = current_token;

	    current_token = this._tokens.next();
	  }

	  sweet_code = this._output.get_code(eol);

	  return sweet_code;
	};

	Beautifier.prototype.handle_token = function(current_token, preserve_statement_flags) {
	  if (current_token.type === TOKEN.START_EXPR) {
	    this.handle_start_expr(current_token);
	  } else if (current_token.type === TOKEN.END_EXPR) {
	    this.handle_end_expr(current_token);
	  } else if (current_token.type === TOKEN.START_BLOCK) {
	    this.handle_start_block(current_token);
	  } else if (current_token.type === TOKEN.END_BLOCK) {
	    this.handle_end_block(current_token);
	  } else if (current_token.type === TOKEN.WORD) {
	    this.handle_word(current_token);
	  } else if (current_token.type === TOKEN.RESERVED) {
	    this.handle_word(current_token);
	  } else if (current_token.type === TOKEN.SEMICOLON) {
	    this.handle_semicolon(current_token);
	  } else if (current_token.type === TOKEN.STRING) {
	    this.handle_string(current_token);
	  } else if (current_token.type === TOKEN.EQUALS) {
	    this.handle_equals(current_token);
	  } else if (current_token.type === TOKEN.OPERATOR) {
	    this.handle_operator(current_token);
	  } else if (current_token.type === TOKEN.COMMA) {
	    this.handle_comma(current_token);
	  } else if (current_token.type === TOKEN.BLOCK_COMMENT) {
	    this.handle_block_comment(current_token, preserve_statement_flags);
	  } else if (current_token.type === TOKEN.COMMENT) {
	    this.handle_comment(current_token, preserve_statement_flags);
	  } else if (current_token.type === TOKEN.DOT) {
	    this.handle_dot(current_token);
	  } else if (current_token.type === TOKEN.EOF) {
	    this.handle_eof(current_token);
	  } else if (current_token.type === TOKEN.UNKNOWN) {
	    this.handle_unknown(current_token, preserve_statement_flags);
	  } else {
	    this.handle_unknown(current_token, preserve_statement_flags);
	  }
	};

	Beautifier.prototype.handle_whitespace_and_comments = function(current_token, preserve_statement_flags) {
	  var newlines = current_token.newlines;
	  var keep_whitespace = this._options.keep_array_indentation && is_array(this._flags.mode);

	  if (current_token.comments_before) {
	    var comment_token = current_token.comments_before.next();
	    while (comment_token) {
	      // The cleanest handling of inline comments is to treat them as though they aren't there.
	      // Just continue formatting and the behavior should be logical.
	      // Also ignore unknown tokens.  Again, this should result in better behavior.
	      this.handle_whitespace_and_comments(comment_token, preserve_statement_flags);
	      this.handle_token(comment_token, preserve_statement_flags);
	      comment_token = current_token.comments_before.next();
	    }
	  }

	  if (keep_whitespace) {
	    for (var i = 0; i < newlines; i += 1) {
	      this.print_newline(i > 0, preserve_statement_flags);
	    }
	  } else {
	    if (this._options.max_preserve_newlines && newlines > this._options.max_preserve_newlines) {
	      newlines = this._options.max_preserve_newlines;
	    }

	    if (this._options.preserve_newlines) {
	      if (newlines > 1) {
	        this.print_newline(false, preserve_statement_flags);
	        for (var j = 1; j < newlines; j += 1) {
	          this.print_newline(true, preserve_statement_flags);
	        }
	      }
	    }
	  }

	};

	var newline_restricted_tokens = ['async', 'break', 'continue', 'return', 'throw', 'yield'];

	Beautifier.prototype.allow_wrap_or_preserved_newline = function(current_token, force_linewrap) {
	  force_linewrap = (force_linewrap === undefined) ? false : force_linewrap;

	  // Never wrap the first token on a line
	  if (this._output.just_added_newline()) {
	    return;
	  }

	  var shouldPreserveOrForce = (this._options.preserve_newlines && current_token.newlines) || force_linewrap;
	  var operatorLogicApplies = in_array(this._flags.last_token.text, positionable_operators) ||
	    in_array(current_token.text, positionable_operators);

	  if (operatorLogicApplies) {
	    var shouldPrintOperatorNewline = (
	        in_array(this._flags.last_token.text, positionable_operators) &&
	        in_array(this._options.operator_position, OPERATOR_POSITION_BEFORE_OR_PRESERVE)
	      ) ||
	      in_array(current_token.text, positionable_operators);
	    shouldPreserveOrForce = shouldPreserveOrForce && shouldPrintOperatorNewline;
	  }

	  if (shouldPreserveOrForce) {
	    this.print_newline(false, true);
	  } else if (this._options.wrap_line_length) {
	    if (reserved_array(this._flags.last_token, newline_restricted_tokens)) {
	      // These tokens should never have a newline inserted
	      // between them and the following expression.
	      return;
	    }
	    this._output.set_wrap_point();
	  }
	};

	Beautifier.prototype.print_newline = function(force_newline, preserve_statement_flags) {
	  if (!preserve_statement_flags) {
	    if (this._flags.last_token.text !== ';' && this._flags.last_token.text !== ',' && this._flags.last_token.text !== '=' && (this._flags.last_token.type !== TOKEN.OPERATOR || this._flags.last_token.text === '--' || this._flags.last_token.text === '++')) {
	      var next_token = this._tokens.peek();
	      while (this._flags.mode === MODE.Statement &&
	        !(this._flags.if_block && reserved_word(next_token, 'else')) &&
	        !this._flags.do_block) {
	        this.restore_mode();
	      }
	    }
	  }

	  if (this._output.add_new_line(force_newline)) {
	    this._flags.multiline_frame = true;
	  }
	};

	Beautifier.prototype.print_token_line_indentation = function(current_token) {
	  if (this._output.just_added_newline()) {
	    if (this._options.keep_array_indentation &&
	      current_token.newlines &&
	      (current_token.text === '[' || is_array(this._flags.mode))) {
	      this._output.current_line.set_indent(-1);
	      this._output.current_line.push(current_token.whitespace_before);
	      this._output.space_before_token = false;
	    } else if (this._output.set_indent(this._flags.indentation_level, this._flags.alignment)) {
	      this._flags.line_indent_level = this._flags.indentation_level;
	    }
	  }
	};

	Beautifier.prototype.print_token = function(current_token) {
	  if (this._output.raw) {
	    this._output.add_raw_token(current_token);
	    return;
	  }

	  if (this._options.comma_first && current_token.previous && current_token.previous.type === TOKEN.COMMA &&
	    this._output.just_added_newline()) {
	    if (this._output.previous_line.last() === ',') {
	      var popped = this._output.previous_line.pop();
	      // if the comma was already at the start of the line,
	      // pull back onto that line and reprint the indentation
	      if (this._output.previous_line.is_empty()) {
	        this._output.previous_line.push(popped);
	        this._output.trim(true);
	        this._output.current_line.pop();
	        this._output.trim();
	      }

	      // add the comma in front of the next token
	      this.print_token_line_indentation(current_token);
	      this._output.add_token(',');
	      this._output.space_before_token = true;
	    }
	  }

	  this.print_token_line_indentation(current_token);
	  this._output.non_breaking_space = true;
	  this._output.add_token(current_token.text);
	  if (this._output.previous_token_wrapped) {
	    this._flags.multiline_frame = true;
	  }
	};

	Beautifier.prototype.indent = function() {
	  this._flags.indentation_level += 1;
	  this._output.set_indent(this._flags.indentation_level, this._flags.alignment);
	};

	Beautifier.prototype.deindent = function() {
	  if (this._flags.indentation_level > 0 &&
	    ((!this._flags.parent) || this._flags.indentation_level > this._flags.parent.indentation_level)) {
	    this._flags.indentation_level -= 1;
	    this._output.set_indent(this._flags.indentation_level, this._flags.alignment);
	  }
	};

	Beautifier.prototype.set_mode = function(mode) {
	  if (this._flags) {
	    this._flag_store.push(this._flags);
	    this._previous_flags = this._flags;
	  } else {
	    this._previous_flags = this.create_flags(null, mode);
	  }

	  this._flags = this.create_flags(this._previous_flags, mode);
	  this._output.set_indent(this._flags.indentation_level, this._flags.alignment);
	};


	Beautifier.prototype.restore_mode = function() {
	  if (this._flag_store.length > 0) {
	    this._previous_flags = this._flags;
	    this._flags = this._flag_store.pop();
	    if (this._previous_flags.mode === MODE.Statement) {
	      remove_redundant_indentation(this._output, this._previous_flags);
	    }
	    this._output.set_indent(this._flags.indentation_level, this._flags.alignment);
	  }
	};

	Beautifier.prototype.start_of_object_property = function() {
	  return this._flags.parent.mode === MODE.ObjectLiteral && this._flags.mode === MODE.Statement && (
	    (this._flags.last_token.text === ':' && this._flags.ternary_depth === 0) || (reserved_array(this._flags.last_token, ['get', 'set'])));
	};

	Beautifier.prototype.start_of_statement = function(current_token) {
	  var start = false;
	  start = start || reserved_array(this._flags.last_token, ['var', 'let', 'const']) && current_token.type === TOKEN.WORD;
	  start = start || reserved_word(this._flags.last_token, 'do');
	  start = start || (!(this._flags.parent.mode === MODE.ObjectLiteral && this._flags.mode === MODE.Statement)) && reserved_array(this._flags.last_token, newline_restricted_tokens) && !current_token.newlines;
	  start = start || reserved_word(this._flags.last_token, 'else') &&
	    !(reserved_word(current_token, 'if') && !current_token.comments_before);
	  start = start || (this._flags.last_token.type === TOKEN.END_EXPR && (this._previous_flags.mode === MODE.ForInitializer || this._previous_flags.mode === MODE.Conditional));
	  start = start || (this._flags.last_token.type === TOKEN.WORD && this._flags.mode === MODE.BlockStatement &&
	    !this._flags.in_case &&
	    !(current_token.text === '--' || current_token.text === '++') &&
	    this._last_last_text !== 'function' &&
	    current_token.type !== TOKEN.WORD && current_token.type !== TOKEN.RESERVED);
	  start = start || (this._flags.mode === MODE.ObjectLiteral && (
	    (this._flags.last_token.text === ':' && this._flags.ternary_depth === 0) || reserved_array(this._flags.last_token, ['get', 'set'])));

	  if (start) {
	    this.set_mode(MODE.Statement);
	    this.indent();

	    this.handle_whitespace_and_comments(current_token, true);

	    // Issue #276:
	    // If starting a new statement with [if, for, while, do], push to a new line.
	    // if (a) if (b) if(c) d(); else e(); else f();
	    if (!this.start_of_object_property()) {
	      this.allow_wrap_or_preserved_newline(current_token,
	        reserved_array(current_token, ['do', 'for', 'if', 'while']));
	    }
	    return true;
	  }
	  return false;
	};

	Beautifier.prototype.handle_start_expr = function(current_token) {
	  // The conditional starts the statement if appropriate.
	  if (!this.start_of_statement(current_token)) {
	    this.handle_whitespace_and_comments(current_token);
	  }

	  var next_mode = MODE.Expression;
	  if (current_token.text === '[') {

	    if (this._flags.last_token.type === TOKEN.WORD || this._flags.last_token.text === ')') {
	      // this is array index specifier, break immediately
	      // a[x], fn()[x]
	      if (reserved_array(this._flags.last_token, line_starters)) {
	        this._output.space_before_token = true;
	      }
	      this.print_token(current_token);
	      this.set_mode(next_mode);
	      this.indent();
	      if (this._options.space_in_paren) {
	        this._output.space_before_token = true;
	      }
	      return;
	    }

	    next_mode = MODE.ArrayLiteral;
	    if (is_array(this._flags.mode)) {
	      if (this._flags.last_token.text === '[' ||
	        (this._flags.last_token.text === ',' && (this._last_last_text === ']' || this._last_last_text === '}'))) {
	        // ], [ goes to new line
	        // }, [ goes to new line
	        if (!this._options.keep_array_indentation) {
	          this.print_newline();
	        }
	      }
	    }

	    if (!in_array(this._flags.last_token.type, [TOKEN.START_EXPR, TOKEN.END_EXPR, TOKEN.WORD, TOKEN.OPERATOR, TOKEN.DOT])) {
	      this._output.space_before_token = true;
	    }
	  } else {
	    if (this._flags.last_token.type === TOKEN.RESERVED) {
	      if (this._flags.last_token.text === 'for') {
	        this._output.space_before_token = this._options.space_before_conditional;
	        next_mode = MODE.ForInitializer;
	      } else if (in_array(this._flags.last_token.text, ['if', 'while', 'switch'])) {
	        this._output.space_before_token = this._options.space_before_conditional;
	        next_mode = MODE.Conditional;
	      } else if (in_array(this._flags.last_word, ['await', 'async'])) {
	        // Should be a space between await and an IIFE, or async and an arrow function
	        this._output.space_before_token = true;
	      } else if (this._flags.last_token.text === 'import' && current_token.whitespace_before === '') {
	        this._output.space_before_token = false;
	      } else if (in_array(this._flags.last_token.text, line_starters) || this._flags.last_token.text === 'catch') {
	        this._output.space_before_token = true;
	      }
	    } else if (this._flags.last_token.type === TOKEN.EQUALS || this._flags.last_token.type === TOKEN.OPERATOR) {
	      // Support of this kind of newline preservation.
	      // a = (b &&
	      //     (c || d));
	      if (!this.start_of_object_property()) {
	        this.allow_wrap_or_preserved_newline(current_token);
	      }
	    } else if (this._flags.last_token.type === TOKEN.WORD) {
	      this._output.space_before_token = false;

	      // function name() vs function name ()
	      // function* name() vs function* name ()
	      // async name() vs async name ()
	      // In ES6, you can also define the method properties of an object
	      // var obj = {a: function() {}}
	      // It can be abbreviated
	      // var obj = {a() {}}
	      // var obj = { a() {}} vs var obj = { a () {}}
	      // var obj = { * a() {}} vs var obj = { * a () {}}
	      var peek_back_two = this._tokens.peek(-3);
	      if (this._options.space_after_named_function && peek_back_two) {
	        // peek starts at next character so -1 is current token
	        var peek_back_three = this._tokens.peek(-4);
	        if (reserved_array(peek_back_two, ['async', 'function']) ||
	          (peek_back_two.text === '*' && reserved_array(peek_back_three, ['async', 'function']))) {
	          this._output.space_before_token = true;
	        } else if (this._flags.mode === MODE.ObjectLiteral) {
	          if ((peek_back_two.text === '{' || peek_back_two.text === ',') ||
	            (peek_back_two.text === '*' && (peek_back_three.text === '{' || peek_back_three.text === ','))) {
	            this._output.space_before_token = true;
	          }
	        } else if (this._flags.parent && this._flags.parent.class_start_block) {
	          this._output.space_before_token = true;
	        }
	      }
	    } else {
	      // Support preserving wrapped arrow function expressions
	      // a.b('c',
	      //     () => d.e
	      // )
	      this.allow_wrap_or_preserved_newline(current_token);
	    }

	    // function() vs function ()
	    // yield*() vs yield* ()
	    // function*() vs function* ()
	    if ((this._flags.last_token.type === TOKEN.RESERVED && (this._flags.last_word === 'function' || this._flags.last_word === 'typeof')) ||
	      (this._flags.last_token.text === '*' &&
	        (in_array(this._last_last_text, ['function', 'yield']) ||
	          (this._flags.mode === MODE.ObjectLiteral && in_array(this._last_last_text, ['{', ',']))))) {
	      this._output.space_before_token = this._options.space_after_anon_function;
	    }
	  }

	  if (this._flags.last_token.text === ';' || this._flags.last_token.type === TOKEN.START_BLOCK) {
	    this.print_newline();
	  } else if (this._flags.last_token.type === TOKEN.END_EXPR || this._flags.last_token.type === TOKEN.START_EXPR || this._flags.last_token.type === TOKEN.END_BLOCK || this._flags.last_token.text === '.' || this._flags.last_token.type === TOKEN.COMMA) {
	    // do nothing on (( and )( and ][ and ]( and .(
	    // TODO: Consider whether forcing this is required.  Review failing tests when removed.
	    this.allow_wrap_or_preserved_newline(current_token, current_token.newlines);
	  }

	  this.print_token(current_token);
	  this.set_mode(next_mode);
	  if (this._options.space_in_paren) {
	    this._output.space_before_token = true;
	  }

	  // In all cases, if we newline while inside an expression it should be indented.
	  this.indent();
	};

	Beautifier.prototype.handle_end_expr = function(current_token) {
	  // statements inside expressions are not valid syntax, but...
	  // statements must all be closed when their container closes
	  while (this._flags.mode === MODE.Statement) {
	    this.restore_mode();
	  }

	  this.handle_whitespace_and_comments(current_token);

	  if (this._flags.multiline_frame) {
	    this.allow_wrap_or_preserved_newline(current_token,
	      current_token.text === ']' && is_array(this._flags.mode) && !this._options.keep_array_indentation);
	  }

	  if (this._options.space_in_paren) {
	    if (this._flags.last_token.type === TOKEN.START_EXPR && !this._options.space_in_empty_paren) {
	      // () [] no inner space in empty parens like these, ever, ref #320
	      this._output.trim();
	      this._output.space_before_token = false;
	    } else {
	      this._output.space_before_token = true;
	    }
	  }
	  this.deindent();
	  this.print_token(current_token);
	  this.restore_mode();

	  remove_redundant_indentation(this._output, this._previous_flags);

	  // do {} while () // no statement required after
	  if (this._flags.do_while && this._previous_flags.mode === MODE.Conditional) {
	    this._previous_flags.mode = MODE.Expression;
	    this._flags.do_block = false;
	    this._flags.do_while = false;

	  }
	};

	Beautifier.prototype.handle_start_block = function(current_token) {
	  this.handle_whitespace_and_comments(current_token);

	  // Check if this is should be treated as a ObjectLiteral
	  var next_token = this._tokens.peek();
	  var second_token = this._tokens.peek(1);
	  if (this._flags.last_word === 'switch' && this._flags.last_token.type === TOKEN.END_EXPR) {
	    this.set_mode(MODE.BlockStatement);
	    this._flags.in_case_statement = true;
	  } else if (this._flags.case_body) {
	    this.set_mode(MODE.BlockStatement);
	  } else if (second_token && (
	      (in_array(second_token.text, [':', ',']) && in_array(next_token.type, [TOKEN.STRING, TOKEN.WORD, TOKEN.RESERVED])) ||
	      (in_array(next_token.text, ['get', 'set', '...']) && in_array(second_token.type, [TOKEN.WORD, TOKEN.RESERVED]))
	    )) {
	    // We don't support TypeScript,but we didn't break it for a very long time.
	    // We'll try to keep not breaking it.
	    if (in_array(this._last_last_text, ['class', 'interface']) && !in_array(second_token.text, [':', ','])) {
	      this.set_mode(MODE.BlockStatement);
	    } else {
	      this.set_mode(MODE.ObjectLiteral);
	    }
	  } else if (this._flags.last_token.type === TOKEN.OPERATOR && this._flags.last_token.text === '=>') {
	    // arrow function: (param1, paramN) => { statements }
	    this.set_mode(MODE.BlockStatement);
	  } else if (in_array(this._flags.last_token.type, [TOKEN.EQUALS, TOKEN.START_EXPR, TOKEN.COMMA, TOKEN.OPERATOR]) ||
	    reserved_array(this._flags.last_token, ['return', 'throw', 'import', 'default'])
	  ) {
	    // Detecting shorthand function syntax is difficult by scanning forward,
	    //     so check the surrounding context.
	    // If the block is being returned, imported, export default, passed as arg,
	    //     assigned with = or assigned in a nested object, treat as an ObjectLiteral.
	    this.set_mode(MODE.ObjectLiteral);
	  } else {
	    this.set_mode(MODE.BlockStatement);
	  }

	  if (this._flags.last_token) {
	    if (reserved_array(this._flags.last_token.previous, ['class', 'extends'])) {
	      this._flags.class_start_block = true;
	    }
	  }

	  var empty_braces = !next_token.comments_before && next_token.text === '}';
	  var empty_anonymous_function = empty_braces && this._flags.last_word === 'function' &&
	    this._flags.last_token.type === TOKEN.END_EXPR;

	  if (this._options.brace_preserve_inline) // check for inline, set inline_frame if so
	  {
	    // search forward for a newline wanted inside this block
	    var index = 0;
	    var check_token = null;
	    this._flags.inline_frame = true;
	    do {
	      index += 1;
	      check_token = this._tokens.peek(index - 1);
	      if (check_token.newlines) {
	        this._flags.inline_frame = false;
	        break;
	      }
	    } while (check_token.type !== TOKEN.EOF &&
	      !(check_token.type === TOKEN.END_BLOCK && check_token.opened === current_token));
	  }

	  if ((this._options.brace_style === "expand" ||
	      (this._options.brace_style === "none" && current_token.newlines)) &&
	    !this._flags.inline_frame) {
	    if (this._flags.last_token.type !== TOKEN.OPERATOR &&
	      (empty_anonymous_function ||
	        this._flags.last_token.type === TOKEN.EQUALS ||
	        (reserved_array(this._flags.last_token, special_words) && this._flags.last_token.text !== 'else'))) {
	      this._output.space_before_token = true;
	    } else {
	      this.print_newline(false, true);
	    }
	  } else { // collapse || inline_frame
	    if (is_array(this._previous_flags.mode) && (this._flags.last_token.type === TOKEN.START_EXPR || this._flags.last_token.type === TOKEN.COMMA)) {
	      if (this._flags.last_token.type === TOKEN.COMMA || this._options.space_in_paren) {
	        this._output.space_before_token = true;
	      }

	      if (this._flags.last_token.type === TOKEN.COMMA || (this._flags.last_token.type === TOKEN.START_EXPR && this._flags.inline_frame)) {
	        this.allow_wrap_or_preserved_newline(current_token);
	        this._previous_flags.multiline_frame = this._previous_flags.multiline_frame || this._flags.multiline_frame;
	        this._flags.multiline_frame = false;
	      }
	    }
	    if (this._flags.last_token.type !== TOKEN.OPERATOR && this._flags.last_token.type !== TOKEN.START_EXPR) {
	      if (in_array(this._flags.last_token.type, [TOKEN.START_BLOCK, TOKEN.SEMICOLON]) && !this._flags.inline_frame) {
	        this.print_newline();
	      } else {
	        this._output.space_before_token = true;
	      }
	    }
	  }
	  this.print_token(current_token);
	  this.indent();

	  // Except for specific cases, open braces are followed by a new line.
	  if (!empty_braces && !(this._options.brace_preserve_inline && this._flags.inline_frame)) {
	    this.print_newline();
	  }
	};

	Beautifier.prototype.handle_end_block = function(current_token) {
	  // statements must all be closed when their container closes
	  this.handle_whitespace_and_comments(current_token);

	  while (this._flags.mode === MODE.Statement) {
	    this.restore_mode();
	  }

	  var empty_braces = this._flags.last_token.type === TOKEN.START_BLOCK;

	  if (this._flags.inline_frame && !empty_braces) { // try inline_frame (only set if this._options.braces-preserve-inline) first
	    this._output.space_before_token = true;
	  } else if (this._options.brace_style === "expand") {
	    if (!empty_braces) {
	      this.print_newline();
	    }
	  } else {
	    // skip {}
	    if (!empty_braces) {
	      if (is_array(this._flags.mode) && this._options.keep_array_indentation) {
	        // we REALLY need a newline here, but newliner would skip that
	        this._options.keep_array_indentation = false;
	        this.print_newline();
	        this._options.keep_array_indentation = true;

	      } else {
	        this.print_newline();
	      }
	    }
	  }
	  this.restore_mode();
	  this.print_token(current_token);
	};

	Beautifier.prototype.handle_word = function(current_token) {
	  if (current_token.type === TOKEN.RESERVED) {
	    if (in_array(current_token.text, ['set', 'get']) && this._flags.mode !== MODE.ObjectLiteral) {
	      current_token.type = TOKEN.WORD;
	    } else if (current_token.text === 'import' && in_array(this._tokens.peek().text, ['(', '.'])) {
	      current_token.type = TOKEN.WORD;
	    } else if (in_array(current_token.text, ['as', 'from']) && !this._flags.import_block) {
	      current_token.type = TOKEN.WORD;
	    } else if (this._flags.mode === MODE.ObjectLiteral) {
	      var next_token = this._tokens.peek();
	      if (next_token.text === ':') {
	        current_token.type = TOKEN.WORD;
	      }
	    }
	  }

	  if (this.start_of_statement(current_token)) {
	    // The conditional starts the statement if appropriate.
	    if (reserved_array(this._flags.last_token, ['var', 'let', 'const']) && current_token.type === TOKEN.WORD) {
	      this._flags.declaration_statement = true;
	    }
	  } else if (current_token.newlines && !is_expression(this._flags.mode) &&
	    (this._flags.last_token.type !== TOKEN.OPERATOR || (this._flags.last_token.text === '--' || this._flags.last_token.text === '++')) &&
	    this._flags.last_token.type !== TOKEN.EQUALS &&
	    (this._options.preserve_newlines || !reserved_array(this._flags.last_token, ['var', 'let', 'const', 'set', 'get']))) {
	    this.handle_whitespace_and_comments(current_token);
	    this.print_newline();
	  } else {
	    this.handle_whitespace_and_comments(current_token);
	  }

	  if (this._flags.do_block && !this._flags.do_while) {
	    if (reserved_word(current_token, 'while')) {
	      // do {} ## while ()
	      this._output.space_before_token = true;
	      this.print_token(current_token);
	      this._output.space_before_token = true;
	      this._flags.do_while = true;
	      return;
	    } else {
	      // do {} should always have while as the next word.
	      // if we don't see the expected while, recover
	      this.print_newline();
	      this._flags.do_block = false;
	    }
	  }

	  // if may be followed by else, or not
	  // Bare/inline ifs are tricky
	  // Need to unwind the modes correctly: if (a) if (b) c(); else d(); else e();
	  if (this._flags.if_block) {
	    if (!this._flags.else_block && reserved_word(current_token, 'else')) {
	      this._flags.else_block = true;
	    } else {
	      while (this._flags.mode === MODE.Statement) {
	        this.restore_mode();
	      }
	      this._flags.if_block = false;
	      this._flags.else_block = false;
	    }
	  }

	  if (this._flags.in_case_statement && reserved_array(current_token, ['case', 'default'])) {
	    this.print_newline();
	    if (!this._flags.case_block && (this._flags.case_body || this._options.jslint_happy)) {
	      // switch cases following one another
	      this.deindent();
	    }
	    this._flags.case_body = false;

	    this.print_token(current_token);
	    this._flags.in_case = true;
	    return;
	  }

	  if (this._flags.last_token.type === TOKEN.COMMA || this._flags.last_token.type === TOKEN.START_EXPR || this._flags.last_token.type === TOKEN.EQUALS || this._flags.last_token.type === TOKEN.OPERATOR) {
	    if (!this.start_of_object_property() && !(
	        // start of object property is different for numeric values with +/- prefix operators
	        in_array(this._flags.last_token.text, ['+', '-']) && this._last_last_text === ':' && this._flags.parent.mode === MODE.ObjectLiteral)) {
	      this.allow_wrap_or_preserved_newline(current_token);
	    }
	  }

	  if (reserved_word(current_token, 'function')) {
	    if (in_array(this._flags.last_token.text, ['}', ';']) ||
	      (this._output.just_added_newline() && !(in_array(this._flags.last_token.text, ['(', '[', '{', ':', '=', ',']) || this._flags.last_token.type === TOKEN.OPERATOR))) {
	      // make sure there is a nice clean space of at least one blank line
	      // before a new function definition
	      if (!this._output.just_added_blankline() && !current_token.comments_before) {
	        this.print_newline();
	        this.print_newline(true);
	      }
	    }
	    if (this._flags.last_token.type === TOKEN.RESERVED || this._flags.last_token.type === TOKEN.WORD) {
	      if (reserved_array(this._flags.last_token, ['get', 'set', 'new', 'export']) ||
	        reserved_array(this._flags.last_token, newline_restricted_tokens)) {
	        this._output.space_before_token = true;
	      } else if (reserved_word(this._flags.last_token, 'default') && this._last_last_text === 'export') {
	        this._output.space_before_token = true;
	      } else if (this._flags.last_token.text === 'declare') {
	        // accomodates Typescript declare function formatting
	        this._output.space_before_token = true;
	      } else {
	        this.print_newline();
	      }
	    } else if (this._flags.last_token.type === TOKEN.OPERATOR || this._flags.last_token.text === '=') {
	      // foo = function
	      this._output.space_before_token = true;
	    } else if (!this._flags.multiline_frame && (is_expression(this._flags.mode) || is_array(this._flags.mode))) ; else {
	      this.print_newline();
	    }

	    this.print_token(current_token);
	    this._flags.last_word = current_token.text;
	    return;
	  }

	  var prefix = 'NONE';

	  if (this._flags.last_token.type === TOKEN.END_BLOCK) {

	    if (this._previous_flags.inline_frame) {
	      prefix = 'SPACE';
	    } else if (!reserved_array(current_token, ['else', 'catch', 'finally', 'from'])) {
	      prefix = 'NEWLINE';
	    } else {
	      if (this._options.brace_style === "expand" ||
	        this._options.brace_style === "end-expand" ||
	        (this._options.brace_style === "none" && current_token.newlines)) {
	        prefix = 'NEWLINE';
	      } else {
	        prefix = 'SPACE';
	        this._output.space_before_token = true;
	      }
	    }
	  } else if (this._flags.last_token.type === TOKEN.SEMICOLON && this._flags.mode === MODE.BlockStatement) {
	    // TODO: Should this be for STATEMENT as well?
	    prefix = 'NEWLINE';
	  } else if (this._flags.last_token.type === TOKEN.SEMICOLON && is_expression(this._flags.mode)) {
	    prefix = 'SPACE';
	  } else if (this._flags.last_token.type === TOKEN.STRING) {
	    prefix = 'NEWLINE';
	  } else if (this._flags.last_token.type === TOKEN.RESERVED || this._flags.last_token.type === TOKEN.WORD ||
	    (this._flags.last_token.text === '*' &&
	      (in_array(this._last_last_text, ['function', 'yield']) ||
	        (this._flags.mode === MODE.ObjectLiteral && in_array(this._last_last_text, ['{', ',']))))) {
	    prefix = 'SPACE';
	  } else if (this._flags.last_token.type === TOKEN.START_BLOCK) {
	    if (this._flags.inline_frame) {
	      prefix = 'SPACE';
	    } else {
	      prefix = 'NEWLINE';
	    }
	  } else if (this._flags.last_token.type === TOKEN.END_EXPR) {
	    this._output.space_before_token = true;
	    prefix = 'NEWLINE';
	  }

	  if (reserved_array(current_token, line_starters) && this._flags.last_token.text !== ')') {
	    if (this._flags.inline_frame || this._flags.last_token.text === 'else' || this._flags.last_token.text === 'export') {
	      prefix = 'SPACE';
	    } else {
	      prefix = 'NEWLINE';
	    }

	  }

	  if (reserved_array(current_token, ['else', 'catch', 'finally'])) {
	    if ((!(this._flags.last_token.type === TOKEN.END_BLOCK && this._previous_flags.mode === MODE.BlockStatement) ||
	        this._options.brace_style === "expand" ||
	        this._options.brace_style === "end-expand" ||
	        (this._options.brace_style === "none" && current_token.newlines)) &&
	      !this._flags.inline_frame) {
	      this.print_newline();
	    } else {
	      this._output.trim(true);
	      var line = this._output.current_line;
	      // If we trimmed and there's something other than a close block before us
	      // put a newline back in.  Handles '} // comment' scenario.
	      if (line.last() !== '}') {
	        this.print_newline();
	      }
	      this._output.space_before_token = true;
	    }
	  } else if (prefix === 'NEWLINE') {
	    if (reserved_array(this._flags.last_token, special_words)) {
	      // no newline between 'return nnn'
	      this._output.space_before_token = true;
	    } else if (this._flags.last_token.text === 'declare' && reserved_array(current_token, ['var', 'let', 'const'])) {
	      // accomodates Typescript declare formatting
	      this._output.space_before_token = true;
	    } else if (this._flags.last_token.type !== TOKEN.END_EXPR) {
	      if ((this._flags.last_token.type !== TOKEN.START_EXPR || !reserved_array(current_token, ['var', 'let', 'const'])) && this._flags.last_token.text !== ':') {
	        // no need to force newline on 'var': for (var x = 0...)
	        if (reserved_word(current_token, 'if') && reserved_word(current_token.previous, 'else')) {
	          // no newline for } else if {
	          this._output.space_before_token = true;
	        } else {
	          this.print_newline();
	        }
	      }
	    } else if (reserved_array(current_token, line_starters) && this._flags.last_token.text !== ')') {
	      this.print_newline();
	    }
	  } else if (this._flags.multiline_frame && is_array(this._flags.mode) && this._flags.last_token.text === ',' && this._last_last_text === '}') {
	    this.print_newline(); // }, in lists get a newline treatment
	  } else if (prefix === 'SPACE') {
	    this._output.space_before_token = true;
	  }
	  if (current_token.previous && (current_token.previous.type === TOKEN.WORD || current_token.previous.type === TOKEN.RESERVED)) {
	    this._output.space_before_token = true;
	  }
	  this.print_token(current_token);
	  this._flags.last_word = current_token.text;

	  if (current_token.type === TOKEN.RESERVED) {
	    if (current_token.text === 'do') {
	      this._flags.do_block = true;
	    } else if (current_token.text === 'if') {
	      this._flags.if_block = true;
	    } else if (current_token.text === 'import') {
	      this._flags.import_block = true;
	    } else if (this._flags.import_block && reserved_word(current_token, 'from')) {
	      this._flags.import_block = false;
	    }
	  }
	};

	Beautifier.prototype.handle_semicolon = function(current_token) {
	  if (this.start_of_statement(current_token)) {
	    // The conditional starts the statement if appropriate.
	    // Semicolon can be the start (and end) of a statement
	    this._output.space_before_token = false;
	  } else {
	    this.handle_whitespace_and_comments(current_token);
	  }

	  var next_token = this._tokens.peek();
	  while (this._flags.mode === MODE.Statement &&
	    !(this._flags.if_block && reserved_word(next_token, 'else')) &&
	    !this._flags.do_block) {
	    this.restore_mode();
	  }

	  // hacky but effective for the moment
	  if (this._flags.import_block) {
	    this._flags.import_block = false;
	  }
	  this.print_token(current_token);
	};

	Beautifier.prototype.handle_string = function(current_token) {
	  if (current_token.text.startsWith("`") && current_token.newlines === 0 && current_token.whitespace_before === '' && (current_token.previous.text === ')' || this._flags.last_token.type === TOKEN.WORD)) ; else if (this.start_of_statement(current_token)) {
	    // The conditional starts the statement if appropriate.
	    // One difference - strings want at least a space before
	    this._output.space_before_token = true;
	  } else {
	    this.handle_whitespace_and_comments(current_token);
	    if (this._flags.last_token.type === TOKEN.RESERVED || this._flags.last_token.type === TOKEN.WORD || this._flags.inline_frame) {
	      this._output.space_before_token = true;
	    } else if (this._flags.last_token.type === TOKEN.COMMA || this._flags.last_token.type === TOKEN.START_EXPR || this._flags.last_token.type === TOKEN.EQUALS || this._flags.last_token.type === TOKEN.OPERATOR) {
	      if (!this.start_of_object_property()) {
	        this.allow_wrap_or_preserved_newline(current_token);
	      }
	    } else if ((current_token.text.startsWith("`") && this._flags.last_token.type === TOKEN.END_EXPR && (current_token.previous.text === ']' || current_token.previous.text === ')') && current_token.newlines === 0)) {
	      this._output.space_before_token = true;
	    } else {
	      this.print_newline();
	    }
	  }
	  this.print_token(current_token);
	};

	Beautifier.prototype.handle_equals = function(current_token) {
	  if (this.start_of_statement(current_token)) ; else {
	    this.handle_whitespace_and_comments(current_token);
	  }

	  if (this._flags.declaration_statement) {
	    // just got an '=' in a var-line, different formatting/line-breaking, etc will now be done
	    this._flags.declaration_assignment = true;
	  }
	  this._output.space_before_token = true;
	  this.print_token(current_token);
	  this._output.space_before_token = true;
	};

	Beautifier.prototype.handle_comma = function(current_token) {
	  this.handle_whitespace_and_comments(current_token, true);

	  this.print_token(current_token);
	  this._output.space_before_token = true;
	  if (this._flags.declaration_statement) {
	    if (is_expression(this._flags.parent.mode)) {
	      // do not break on comma, for(var a = 1, b = 2)
	      this._flags.declaration_assignment = false;
	    }

	    if (this._flags.declaration_assignment) {
	      this._flags.declaration_assignment = false;
	      this.print_newline(false, true);
	    } else if (this._options.comma_first) {
	      // for comma-first, we want to allow a newline before the comma
	      // to turn into a newline after the comma, which we will fixup later
	      this.allow_wrap_or_preserved_newline(current_token);
	    }
	  } else if (this._flags.mode === MODE.ObjectLiteral ||
	    (this._flags.mode === MODE.Statement && this._flags.parent.mode === MODE.ObjectLiteral)) {
	    if (this._flags.mode === MODE.Statement) {
	      this.restore_mode();
	    }

	    if (!this._flags.inline_frame) {
	      this.print_newline();
	    }
	  } else if (this._options.comma_first) {
	    // EXPR or DO_BLOCK
	    // for comma-first, we want to allow a newline before the comma
	    // to turn into a newline after the comma, which we will fixup later
	    this.allow_wrap_or_preserved_newline(current_token);
	  }
	};

	Beautifier.prototype.handle_operator = function(current_token) {
	  var isGeneratorAsterisk = current_token.text === '*' &&
	    (reserved_array(this._flags.last_token, ['function', 'yield']) ||
	      (in_array(this._flags.last_token.type, [TOKEN.START_BLOCK, TOKEN.COMMA, TOKEN.END_BLOCK, TOKEN.SEMICOLON]))
	    );
	  var isUnary = in_array(current_token.text, ['-', '+']) && (
	    in_array(this._flags.last_token.type, [TOKEN.START_BLOCK, TOKEN.START_EXPR, TOKEN.EQUALS, TOKEN.OPERATOR]) ||
	    in_array(this._flags.last_token.text, line_starters) ||
	    this._flags.last_token.text === ','
	  );

	  if (this.start_of_statement(current_token)) ; else {
	    var preserve_statement_flags = !isGeneratorAsterisk;
	    this.handle_whitespace_and_comments(current_token, preserve_statement_flags);
	  }

	  // hack for actionscript's import .*;
	  if (current_token.text === '*' && this._flags.last_token.type === TOKEN.DOT) {
	    this.print_token(current_token);
	    return;
	  }

	  if (current_token.text === '::') {
	    // no spaces around exotic namespacing syntax operator
	    this.print_token(current_token);
	    return;
	  }

	  if (in_array(current_token.text, ['-', '+']) && this.start_of_object_property()) {
	    // numeric value with +/- symbol in front as a property
	    this.print_token(current_token);
	    return;
	  }

	  // Allow line wrapping between operators when operator_position is
	  //   set to before or preserve
	  if (this._flags.last_token.type === TOKEN.OPERATOR && in_array(this._options.operator_position, OPERATOR_POSITION_BEFORE_OR_PRESERVE)) {
	    this.allow_wrap_or_preserved_newline(current_token);
	  }

	  if (current_token.text === ':' && this._flags.in_case) {
	    this.print_token(current_token);

	    this._flags.in_case = false;
	    this._flags.case_body = true;
	    if (this._tokens.peek().type !== TOKEN.START_BLOCK) {
	      this.indent();
	      this.print_newline();
	      this._flags.case_block = false;
	    } else {
	      this._flags.case_block = true;
	      this._output.space_before_token = true;
	    }
	    return;
	  }

	  var space_before = true;
	  var space_after = true;
	  var in_ternary = false;
	  if (current_token.text === ':') {
	    if (this._flags.ternary_depth === 0) {
	      // Colon is invalid javascript outside of ternary and object, but do our best to guess what was meant.
	      space_before = false;
	    } else {
	      this._flags.ternary_depth -= 1;
	      in_ternary = true;
	    }
	  } else if (current_token.text === '?') {
	    this._flags.ternary_depth += 1;
	  }

	  // let's handle the operator_position option prior to any conflicting logic
	  if (!isUnary && !isGeneratorAsterisk && this._options.preserve_newlines && in_array(current_token.text, positionable_operators)) {
	    var isColon = current_token.text === ':';
	    var isTernaryColon = (isColon && in_ternary);
	    var isOtherColon = (isColon && !in_ternary);

	    switch (this._options.operator_position) {
	      case OPERATOR_POSITION.before_newline:
	        // if the current token is : and it's not a ternary statement then we set space_before to false
	        this._output.space_before_token = !isOtherColon;

	        this.print_token(current_token);

	        if (!isColon || isTernaryColon) {
	          this.allow_wrap_or_preserved_newline(current_token);
	        }

	        this._output.space_before_token = true;
	        return;

	      case OPERATOR_POSITION.after_newline:
	        // if the current token is anything but colon, or (via deduction) it's a colon and in a ternary statement,
	        //   then print a newline.

	        this._output.space_before_token = true;

	        if (!isColon || isTernaryColon) {
	          if (this._tokens.peek().newlines) {
	            this.print_newline(false, true);
	          } else {
	            this.allow_wrap_or_preserved_newline(current_token);
	          }
	        } else {
	          this._output.space_before_token = false;
	        }

	        this.print_token(current_token);

	        this._output.space_before_token = true;
	        return;

	      case OPERATOR_POSITION.preserve_newline:
	        if (!isOtherColon) {
	          this.allow_wrap_or_preserved_newline(current_token);
	        }

	        // if we just added a newline, or the current token is : and it's not a ternary statement,
	        //   then we set space_before to false
	        space_before = !(this._output.just_added_newline() || isOtherColon);

	        this._output.space_before_token = space_before;
	        this.print_token(current_token);
	        this._output.space_before_token = true;
	        return;
	    }
	  }

	  if (isGeneratorAsterisk) {
	    this.allow_wrap_or_preserved_newline(current_token);
	    space_before = false;
	    var next_token = this._tokens.peek();
	    space_after = next_token && in_array(next_token.type, [TOKEN.WORD, TOKEN.RESERVED]);
	  } else if (current_token.text === '...') {
	    this.allow_wrap_or_preserved_newline(current_token);
	    space_before = this._flags.last_token.type === TOKEN.START_BLOCK;
	    space_after = false;
	  } else if (in_array(current_token.text, ['--', '++', '!', '~']) || isUnary) {
	    // unary operators (and binary +/- pretending to be unary) special cases
	    if (this._flags.last_token.type === TOKEN.COMMA || this._flags.last_token.type === TOKEN.START_EXPR) {
	      this.allow_wrap_or_preserved_newline(current_token);
	    }

	    space_before = false;
	    space_after = false;

	    // http://www.ecma-international.org/ecma-262/5.1/#sec-7.9.1
	    // if there is a newline between -- or ++ and anything else we should preserve it.
	    if (current_token.newlines && (current_token.text === '--' || current_token.text === '++' || current_token.text === '~')) {
	      var new_line_needed = reserved_array(this._flags.last_token, special_words) && current_token.newlines;
	      if (new_line_needed && (this._previous_flags.if_block || this._previous_flags.else_block)) {
	        this.restore_mode();
	      }
	      this.print_newline(new_line_needed, true);
	    }

	    if (this._flags.last_token.text === ';' && is_expression(this._flags.mode)) {
	      // for (;; ++i)
	      //        ^^^
	      space_before = true;
	    }

	    if (this._flags.last_token.type === TOKEN.RESERVED) {
	      space_before = true;
	    } else if (this._flags.last_token.type === TOKEN.END_EXPR) {
	      space_before = !(this._flags.last_token.text === ']' && (current_token.text === '--' || current_token.text === '++'));
	    } else if (this._flags.last_token.type === TOKEN.OPERATOR) {
	      // a++ + ++b;
	      // a - -b
	      space_before = in_array(current_token.text, ['--', '-', '++', '+']) && in_array(this._flags.last_token.text, ['--', '-', '++', '+']);
	      // + and - are not unary when preceeded by -- or ++ operator
	      // a-- + b
	      // a * +b
	      // a - -b
	      if (in_array(current_token.text, ['+', '-']) && in_array(this._flags.last_token.text, ['--', '++'])) {
	        space_after = true;
	      }
	    }


	    if (((this._flags.mode === MODE.BlockStatement && !this._flags.inline_frame) || this._flags.mode === MODE.Statement) &&
	      (this._flags.last_token.text === '{' || this._flags.last_token.text === ';')) {
	      // { foo; --i }
	      // foo(); --bar;
	      this.print_newline();
	    }
	  }

	  this._output.space_before_token = this._output.space_before_token || space_before;
	  this.print_token(current_token);
	  this._output.space_before_token = space_after;
	};

	Beautifier.prototype.handle_block_comment = function(current_token, preserve_statement_flags) {
	  if (this._output.raw) {
	    this._output.add_raw_token(current_token);
	    if (current_token.directives && current_token.directives.preserve === 'end') {
	      // If we're testing the raw output behavior, do not allow a directive to turn it off.
	      this._output.raw = this._options.test_output_raw;
	    }
	    return;
	  }

	  if (current_token.directives) {
	    this.print_newline(false, preserve_statement_flags);
	    this.print_token(current_token);
	    if (current_token.directives.preserve === 'start') {
	      this._output.raw = true;
	    }
	    this.print_newline(false, true);
	    return;
	  }

	  // inline block
	  if (!acorn.newline.test(current_token.text) && !current_token.newlines) {
	    this._output.space_before_token = true;
	    this.print_token(current_token);
	    this._output.space_before_token = true;
	    return;
	  } else {
	    this.print_block_commment(current_token, preserve_statement_flags);
	  }
	};

	Beautifier.prototype.print_block_commment = function(current_token, preserve_statement_flags) {
	  var lines = split_linebreaks(current_token.text);
	  var j; // iterator for this case
	  var javadoc = false;
	  var starless = false;
	  var lastIndent = current_token.whitespace_before;
	  var lastIndentLength = lastIndent.length;

	  // block comment starts with a new line
	  this.print_newline(false, preserve_statement_flags);

	  // first line always indented
	  this.print_token_line_indentation(current_token);
	  this._output.add_token(lines[0]);
	  this.print_newline(false, preserve_statement_flags);


	  if (lines.length > 1) {
	    lines = lines.slice(1);
	    javadoc = all_lines_start_with(lines, '*');
	    starless = each_line_matches_indent(lines, lastIndent);

	    if (javadoc) {
	      this._flags.alignment = 1;
	    }

	    for (j = 0; j < lines.length; j++) {
	      if (javadoc) {
	        // javadoc: reformat and re-indent
	        this.print_token_line_indentation(current_token);
	        this._output.add_token(ltrim(lines[j]));
	      } else if (starless && lines[j]) {
	        // starless: re-indent non-empty content, avoiding trim
	        this.print_token_line_indentation(current_token);
	        this._output.add_token(lines[j].substring(lastIndentLength));
	      } else {
	        // normal comments output raw
	        this._output.current_line.set_indent(-1);
	        this._output.add_token(lines[j]);
	      }

	      // for comments on their own line or  more than one line, make sure there's a new line after
	      this.print_newline(false, preserve_statement_flags);
	    }

	    this._flags.alignment = 0;
	  }
	};


	Beautifier.prototype.handle_comment = function(current_token, preserve_statement_flags) {
	  if (current_token.newlines) {
	    this.print_newline(false, preserve_statement_flags);
	  } else {
	    this._output.trim(true);
	  }

	  this._output.space_before_token = true;
	  this.print_token(current_token);
	  this.print_newline(false, preserve_statement_flags);
	};

	Beautifier.prototype.handle_dot = function(current_token) {
	  if (this.start_of_statement(current_token)) ; else {
	    this.handle_whitespace_and_comments(current_token, true);
	  }

	  if (this._flags.last_token.text.match('^[0-9]+$')) {
	    this._output.space_before_token = true;
	  }

	  if (reserved_array(this._flags.last_token, special_words)) {
	    this._output.space_before_token = false;
	  } else {
	    // allow preserved newlines before dots in general
	    // force newlines on dots after close paren when break_chained - for bar().baz()
	    this.allow_wrap_or_preserved_newline(current_token,
	      this._flags.last_token.text === ')' && this._options.break_chained_methods);
	  }

	  // Only unindent chained method dot if this dot starts a new line.
	  // Otherwise the automatic extra indentation removal will handle the over indent
	  if (this._options.unindent_chained_methods && this._output.just_added_newline()) {
	    this.deindent();
	  }

	  this.print_token(current_token);
	};

	Beautifier.prototype.handle_unknown = function(current_token, preserve_statement_flags) {
	  this.print_token(current_token);

	  if (current_token.text[current_token.text.length - 1] === '\n') {
	    this.print_newline(false, preserve_statement_flags);
	  }
	};

	Beautifier.prototype.handle_eof = function(current_token) {
	  // Unwind any open statements
	  while (this._flags.mode === MODE.Statement) {
	    this.restore_mode();
	  }
	  this.handle_whitespace_and_comments(current_token);
	};

	beautifier.Beautifier = Beautifier;
	return beautifier;
}

export { requireBeautifier as __require };
//# sourceMappingURL=beautifier.js.map
