How can we effectively utilize LESS variables in styles.less when working with LESS files within components in Angular versions 6 or 7?

Running Angular version 7.0.0 will generate a folder structure typical for "ng new".

Below is the content of my styles.less file:

@personal-black: #0000;

This snippet shows the content of my app.component.less file:

#personal-style-scheme {
    color: @personal-black;
}
<h1 id="personal-style-scheme">
    Welcome to {{ title }}!
</h1>

An error occurs stating:

Failed to compile.

./src/app/app.component.less Module build failed (from ./node_modules/less-loader/dist/cjs.js): #personal-style-scheme { color: @personal-black; ^ Variable @personal-black is undefined in C:\Users\Sameer\Documents\my-app\src\app\app.component.less (line 2, column 11)

The issue arises when trying to access the less variable @personal-black in the component's less file.

Angular.json File Configuration:

{
                "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
                "version": 1,
                // Other project configuration details included here...
            }

Answer №1

After attempting the solution suggested by @jriver27, I encountered an error when referencing material theme css using a relative path.

ERROR in Module build failed (from ./node_modules/postcss-loader/src/index.js): Error: Failed to find '../../~@angular/material/prebuilt-themes/indigo-pink.css'

To resolve this issue, I utilized the 'reference' option in the import statement. More details can be found here.

@import (reference) "../../styles.less";

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