src/scss/parse.js
function checkInclude3(i) {
  const start = i;
  let l;

  if (l = checkAtkeyword(i)) i += l;
  else return 0;

  if (tokens[start + 1].value !== 'include') return 0;

  if (l = checkSC(i)) i += l;
  else return 0;

  if (l = checkIdentOrInterpolation(i)) i += l;
  else return 0;

  if (l = checkSC(i)) i += l;

  if (l = checkArguments(i)) i += l;
  else return 0;

  return i - start;
}
function checkInclude3(i) {
  const start = i;
  let l;

  if (l = checkAtkeyword(i)) i += l;
  else return 0;

  if (tokens[start + 1].value !== 'include') return 0;

  if (l = checkSC(i)) i += l;
  else return 0;

  if (l = checkIdentOrInterpolation(i)) i += l;
  else return 0;

  if (l = checkSC(i)) i += l;

  if (l = checkArguments(i)) i += l;
  else return 0;

  return i - start;
}
function checkInclude3 ( i ) { const start = i ; let l ; if ( l = checkAtkeyword ( i ) ) i += l ; else return 0 ; if ( tokens [ start + 1 ] . value !== 'include' ) return 0 ; if ( l = checkSC ( i ) ) i += l ; else return 0 ; if ( l = checkIdentOrInterpolation ( i ) ) i += l ; else return 0 ; if ( l = checkSC ( i ) ) i += l ; if ( l = checkArguments ( i ) ) i += l ; else return 0 ; return i - start ; }
Check if token is part of an included mixin like `@include nani(foo)`
@param {Number} i Token's index number
@returns {Number} Length of the include
Check if token is part of an included mixin like