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Code Analyzer for JavaScript/TypeScript/CSS

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According to the W3C specifications:

  A string cannot directly contain a newline. To include a newline in a string, use an escape representing the line feed character in ISO-10646
  (U+000A), such as "\A" or "\00000a".
  […]
  It is possible to break strings over several lines, for aesthetic or other reasons, but in such a case the newline itself has to be escaped with
  a backslash (\).

Noncompliant Code Example
a {
  content: "first
    second";
}

Compliant Solution
a {
  content: "first\Asecond";
}

See

   CSS Specification - Strings