!default;\n\n@if $rfs-breakpoint-unit != px and $rfs-breakpoint-unit != em and $rfs-breakpoint-unit != rem {\n  @error \"`#{$rfs-breakpoint-unit}` is not a valid unit for $rfs-breakpoint-unit. Use `px`, `em` or `rem`.\";\n}\n\n// Resize font size based on screen height and width\n$rfs-two-dimensional: false !default;\n\n// Factor of decrease\n$rfs-factor: 10 !default;\n\n@if type-of($rfs-factor) != \"number\" or $rfs-factor <= 1 {\n  @error \"`#{$rfs-factor}` is not a valid  $rfs-factor, it must...

pkg go/parser, const ImportsOnly Mode
pkg go/parser, const PackageClauseOnly Mode
pkg go/parser, const ParseComments Mode
pkg go/parser, const SpuriousErrors Mode
pkg go/parser, const Trace Mode
pkg go/parser, func ParseDir(*token.FileSet, string, func(os.FileInfo) bool, Mode) (map[string]*ast.Package, error)
pkg go/parser, func ParseExpr(string) (ast.Expr, error)