All files whitespace.ts

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export const skipWhiteSpaceInLine =
  /(?:[^\S\n\r\u2028\u2029]|\/\/.*|\/\*.*?\*\/)*/y
 
// Skip whitespace and single-line comments, including /* no newline here */.
// After this RegExp matches, its lastIndex points to a line terminator, or
// the start of multi-line comment (which is effectively a line terminator),
// or the end of string.
export const skipWhiteSpaceToLineBreak = new RegExp(
  // Unfortunately JS doesn't support Perl's atomic /(?>pattern)/ or
  // possessive quantifiers, so we use a trick to prevent backtracking
  // when the look-ahead for line terminator fails.
  '(?=(' +
  // Capture the whitespace and comments that should be skipped inside
  // a look-ahead assertion, and then re-match the group as a unit.
  skipWhiteSpaceInLine.source +
  '))\\1' +
  // Look-ahead for either line terminator, start of multi-line comment,
  // or end of string.
  /(?=[\n\r\u2028\u2029]|\/\*(?!.*?\*\/)|$)/.source,
  'y' // sticky
)