undefinedError: Cannot read property 'eval' of null

[gautamshish09]

Facing this issue while building with 'make'

touch ./node_modules/.installed--used_by_Makefile
./node_modules/.bin/lessc ./src/css/main.less > build/mathquill.css
undefinedError: Cannot read property 'eval' of null

Makefile:135: recipe for target 'build/mathquill.css' failed
make: *** [build/mathquill.css] Error 1

[screambeard]

+1

[Alzy]

I'm also trying to build and am getting the same error. Any luck figuring this out?

[Alzy]

update: after trying to build the project less manually I discovered that the issue lies in the font.less. Particularly line 2:

``.font-face;

Commenting this out, will allow make to complete. However, the resulting css will be missing the font-family declaration from the file. No further testing done.

[vrracing]

Alzy's comment led me to a fix. VSCode was indicating an error on line 1 at the ;

[less] variable value expected

I added false on line 1 and again on line 10 and that seems to have fixed it. I'm not a less-r person but the css file is getting built error free now and the demo page works.

@omit-font-face:false;
.font-face;
.font-face() when not (@omit-font-face) {
@font-face {
font-family: Symbola;
.font-srcs;
}
}

@basic:false;
.font-srcs() when not (@basic) {

[w32zhong]

See this issue: mathquill/mathquill#797

[nadavkav]

Thanks! it help me too 👍