Less doesn't support new math functions (e.g. min, max)

[joe223]

border-width: max(.01rem, 1px);

This code will break compile process.

[kbav]

Note: This is likely also true for the related clamp() function.

A workaround

For anyone coming across this needing a workaround, you can always use LESS' string escaping capabilities to pass along a plain string to the CSS, eg.

border-width: ~"max(.01rem, 1px)";

[joe223]

@kbav Thanks，that's really helpful!

[WofWca]

If you need to use Less variables, e.g. max(@my-var, 1px), you can do

@my-var: .01rem;
--my-var: @my-var;

border-width: ~"max(var(--my-var), 1px)";

[matthew-dean]

Should be working as of Less 4

[blackmambahk]

less 4.1.2
this is still generating incompatible types error

min-width: max( percentage(@i * .083333333333), unit(round(@i * 80), px) );