function normalizeString(
  path,
  allowAboveRoot,
  separator,
  isPathSeparator,
) {
  let res = "";
  let lastSegmentLength = 0;
  let lastSlash = -1;
  let dots = 0;
  let code;
  for (let i = 0, len = path.length; i <= len; ++i) {
    if (i < len) code = path.charCodeAt(i);
    else if (isPathSeparator(code)) break;
    else code = CHAR_FORWARD_SLASH;
    if (isPathSeparator(code)) {
      if (lastSlash === i - 1 || dots === 1) {
        // NOOP
      } else if (lastSlash !== i - 1 && dots === 2) {
        if (
          res.length < 2 || lastSegmentLength !== 2 ||
          res.charCodeAt(res.length - 1) !== CHAR_DOT ||
          res.charCodeAt(res.length - 2) !== CHAR_DOT
        ) {
          if (res.length > 2) {
            const lastSlashIndex = res.lastIndexOf(separator);
            if (lastSlashIndex === -1) {
              res = "";
              lastSegmentLength = 0;
            } else {
              res = res.slice(0, lastSlashIndex);
              lastSegmentLength = res.length - 1 - res.lastIndexOf(separator);
            }
            lastSlash = i;
            dots = 0;
            continue;
          } else if (res.length === 2 || res.length === 1) {
            res = "";
            lastSegmentLength = 0;
            lastSlash = i;
            dots = 0;
            continue;
          }
        }
        if (allowAboveRoot) {
          if (res.length > 0) res += `${separator}..`;
          else res = "..";
          lastSegmentLength = 2;
        }
      } else {
        if (res.length > 0) res += separator + path.slice(lastSlash + 1, i);
        else res = path.slice(lastSlash + 1, i);
        lastSegmentLength = i - lastSlash - 1;
      }
      lastSlash = i;
      dots = 0;
    } else if (code === CHAR_DOT && dots !== -1) {
      ++dots;
    } else {
      dots = -1;
    }
  }
  return res;
}
// Resolves . and .. elements in a path with directory names
Resolves . and .. elements in a path with directory names
Resolves . and .. elements in a path with directory names
function normalizeString(
  path,
  allowAboveRoot,
  separator,
  isPathSeparator,
) {
  let res = "";
  let lastSegmentLength = 0;
  let lastSlash = -1;
  let dots = 0;
  let code;
  for (let i = 0, len = path.length; i <= len; ++i) {
    if (i < len) code = path.charCodeAt(i);
    else if (isPathSeparator(code)) break;
    else code = CHAR_FORWARD_SLASH;
    if (isPathSeparator(code)) {
      if (lastSlash === i - 1 || dots === 1) {
      } else if (lastSlash !== i - 1 && dots === 2) {
        if (
          res.length < 2 || lastSegmentLength !== 2 ||
          res.charCodeAt(res.length - 1) !== CHAR_DOT ||
          res.charCodeAt(res.length - 2) !== CHAR_DOT
        ) {
          if (res.length > 2) {
            const lastSlashIndex = res.lastIndexOf(separator);
            if (lastSlashIndex === -1) {
              res = "";
              lastSegmentLength = 0;
            } else {
              res = res.slice(0, lastSlashIndex);
              lastSegmentLength = res.length - 1 - res.lastIndexOf(separator);
            }
            lastSlash = i;
            dots = 0;
            continue;
          } else if (res.length === 2 || res.length === 1) {
            res = "";
            lastSegmentLength = 0;
            lastSlash = i;
            dots = 0;
            continue;
          }
        }
        if (allowAboveRoot) {
          if (res.length > 0) res += `${separator}..`;
          else res = "..";
          lastSegmentLength = 2;
        }
      } else {
        if (res.length > 0) res += separator + path.slice(lastSlash + 1, i);
        else res = path.slice(lastSlash + 1, i);
        lastSegmentLength = i - lastSlash - 1;
      }
      lastSlash = i;
      dots = 0;
    } else if (code === CHAR_DOT && dots !== -1) {
      ++dots;
    } else {
      dots = -1;
    }
  }
  return res;
}
function normalizeString ( path , allowAboveRoot , separator , isPathSeparator , ) { let res = "" ; let lastSegmentLength = 0 ; let lastSlash = - 1 ; let dots = 0 ; let code ; for ( let i = 0 , len = path . length ; i <= len ; ++ i ) { if ( i < len ) code = path . charCodeAt ( i ) ; else if ( isPathSeparator ( code ) ) break ; else code = CHAR_FORWARD_SLASH ; if ( isPathSeparator ( code ) ) { if ( lastSlash === i - 1 || dots === 1 ) { } else if ( lastSlash !== i - 1 && dots === 2 ) { if ( res . length < 2 || lastSegmentLength !== 2 || res . charCodeAt ( res . length - 1 ) !== CHAR_DOT || res . charCodeAt ( res . length - 2 ) !== CHAR_DOT ) { if ( res . length > 2 ) { const lastSlashIndex = res . lastIndexOf ( separator ) ; if ( lastSlashIndex === - 1 ) { res = "" ; lastSegmentLength = 0 ; } else { res = res . slice ( 0 , lastSlashIndex ) ; lastSegmentLength = res . length - 1 - res . lastIndexOf ( separator ) ; } lastSlash = i ; dots = 0 ; continue ; } else if ( res . length === 2 || res . length === 1 ) { res = "" ; lastSegmentLength = 0 ; lastSlash = i ; dots = 0 ; continue ; } } if ( allowAboveRoot ) { if ( res . length > 0 ) res += ` ${ separator } ` ; else res = ".." ; lastSegmentLength = 2 ; } } else { if ( res . length > 0 ) res += separator + path . slice ( lastSlash + 1 , i ) ; else res = path . slice ( lastSlash + 1 , i ) ; lastSegmentLength = i - lastSlash - 1 ; } lastSlash = i ; dots = 0 ; } else if ( code === CHAR_DOT && dots !== - 1 ) { ++ dots ; } else { dots = - 1 ; } } return res ; }
Resolves .
Resolves .
// NOOP