| // Copyright (c) 2017 Valerie Young. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-string.prototype.trimStart |
| description: TrimStart removes all line terminators from the start of a string. |
| info: | |
| Runtime Symantics: TrimString ( string, where ) |
| ... |
| 4. If where is "start", let T be a String value that is a copy of S with |
| trailing white space removed. |
| ... |
| |
| The definition of white space is the union of WhiteSpace and LineTerminator. |
| |
| features: [string-trimming, String.prototype.trimStart] |
| ---*/ |
| |
| var trimStart = String.prototype.trimStart; |
| |
| // A string of all valid LineTerminator Unicode code points |
| var lt = '\u000A\u000D\u2028\u2029'; |
| |
| var str = lt + 'a' + lt + 'b' + lt; |
| var expected = 'a' + lt + 'b' + lt; |
| |
| assert.sameValue( |
| trimStart.call(str), |
| expected |
| ); |
