use js-compatible linebreak regex

Author: helixbass

lib/coffeescript/coffeescript.js

@@ -3,7 +3,7 @@
 # contains the main entry functions for tokenizing, parsing, and compiling
 # source CoffeeScript into JavaScript.
 
-{Lexer}       = require './lexer'
+{Lexer, LINEBREAK} = require './lexer'
 {parser}      = require './parser'
 helpers       = require './helpers'
 SourceMap     = require './sourcemap'
@@ -114,7 +114,7 @@ exports.compile = compile = withPrettyErrors (code, options = {}) ->
   # `clean` function in the lexer).
   if options.ast
     nodes.allCommentTokens = helpers.extractAllCommentTokens tokens
-    sourceCodeNumberOfLines = (code.match(/\r?\n/g) or '').length + 1
+    sourceCodeNumberOfLines = (code.match(LINEBREAK) or []).length + 1
     sourceCodeLastLine = /.*$/.exec(code)[0] # `.*` matches all but line break characters.
     ast = nodes.ast options
     range = [0, code.length]

lib/coffeescript/lexer.js

@@ -1056,11 +1056,11 @@ exports.Lexer = class Lexer
     else
       string = @chunk[..offset-1]
 
-    lineCount = count string, '\n'
+    lineCount = (string.match(LINEBREAK) or []).length
 
     column = @chunkColumn
     if lineCount > 0
-      [..., lastLine] = string.split '\n'
+      [..., lastLine] = string.split LINEBREAK
       column = lastLine.length
       previousLinesCompensation = @getLocationDataCompensation @chunkOffset, @chunkOffset + offset - column
       # Don't recompensate for initially inserted newline.
@@ -1314,6 +1314,8 @@ OPERATOR   = /// ^ (
 
 WHITESPACE = /^[^\n\S]+/
 
+exports.LINEBREAK = LINEBREAK = /\r\n|[\r\n\u2028\u2029]/ug
+
 COMMENT    = /^(\s*)###([^#][\s\S]*?)(?:###([^\n\S]*)|###$)|^((?:\s*#(?!##[^#]).*)+)/
 
 CODE       = /^[-=]>/