Encountering an Error when Using Sass 3 to Customize Bootstrap 5 Color Values

Having some trouble changing the default theme colors in Bootstrap using SASS. Whenever I try to change a color and compile, I keep getting an error saying 'invalid CSS value'.

I've gone through the documentation and watched a few tutorials on YouTube, but I can't seem to figure out what's causing the issue.

Currently, I am using Bootstrap 5.1.0 and SASS 3. Here's a snippet of my SCSS file:

@import "../../node_modules/bootstrap/scss/variables";

$theme-colors: (
"primary": //some color here,
);

@import "../../node_modules/bootstrap/scss/bootstrap";

And here's the error message I receive in the terminal:

PS F:\Coding\projects\sepehr\client\src\styles> sass style.scss custom.css
Error: ("primary": #0d6efd, "secondary": #6c757d, "success": #198754, "info": #0dcaf0, 
"warning": #ffc107, "danger": #dc3545, "light": #f8f9fa, "dark": #212529) isn't a valid 
CSS value.
   ╷
94 │ $theme-colors-rgb: map-loop($theme-colors, to-rgb, "$value") !default;
   │                             ^^^^^^^^^^^^^
   ╵
csssassbootstrap-5

Answer №1

It's important to remember to import both functions and mixins...

@import "../../node_modules/bootstrap/scss/functions";
@import "../../node_modules/bootstrap/scss/variables";
@import "../../node_modules/bootstrap/scss/mixins";

For further information, check out: Bootstrap 5 - Custom theme-colors not updating classes

Answer №2

It's strange how this functioned properly with @import, but since they are phasing it out, the documentation now recommends using @use. However, even after switching to @use, the code still encounters dependency issues.

Answer №3

At long last, I uncovered the issue: The issue arises when you combine different versions of Bootstrap, like 5.02 (or older) and 5.2. or 5.1.0 Make sure that your scss --load-path covers the necessary bootstrap versions and fragments! This results in functions.scss being loaded from the older versions. These versions do not include a map-loop function yet. The error message likely indicates that the function map-loop was not located! It's frustrating for the compiler (or the error message received).

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