audit-less

Testing & Quality

Scan LESS stylesheets for variable errors — undefined variables, CSS custom properties passed to compile-time functions (fade, darken, lighten, etc.), and incorrect variable name patterns. Reports issues with file, line, and fix.

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Source SKILL.md: https://github.com/jhd3197/ServerKit/blob/HEAD/.claude/skills/audit-less/SKILL.md

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Audit LESS stylesheets in ServerKit for recurring build-breaking patterns. Scope: ${ARGUMENTS:-frontend/src/styles/}

What to Scan For

Pattern 1: CSS custom properties in LESS compile-time functions

LESS functions like fade(), darken(), lighten(), saturate(), spin(), mix() require real color values at compile time. Variables defined as var(--something) will fail.

Search for calls to these functions and check if any argument is a variable that resolves to a CSS custom property.

Broken — these variables use var(--...) and cannot be evaluated by LESS:

@bg-body, @bg-sidebar, @bg-card, @bg-hover, @bg-elevated, @bg-secondary, @bg-tertiary
@border-default, @border-subtle, @border-active, @border-hover
@text-primary, @text-secondary, @text-tertiary
@accent-primary, @accent-hover, @accent-glow, @accent-shadow
@shadow-sm, @shadow-md, @shadow-lg
@color-primary

Fix: Use the corresponding *-raw variant instead (e.g., @bg-hover → @bg-hover-raw, @text-tertiary → @text-tertiary-raw, @accent-primary → @accent-primary-raw).

Pattern 2: Undefined or misspelled variables

Check for variables that don't exist in _variables.less. Common mistakes:

@card-bg → should be @bg-card
@accent-success → should be @success
@accent-danger → should be @danger
@accent-info → should be @info
@accent-warning → should be @warning
@primary-color → should be @accent-primary or @accent-primary-raw
@spacing-* → should be @space-*

Pattern 3: Non-raw variables in theme-sensitive contexts

For any LESS function that manipulates color values (fade, darken, lighten, contrast, saturate, desaturate, spin, mix, tint, shade), the argument MUST be a raw hex/rgb value or a *-raw variable.

Reference: Valid Variable Names

Read frontend/src/styles/_variables.less to get the authoritative list of defined variables. Any @variable used in a .less file that is not in _variables.less (and is not a local variable or LESS built-in) is a bug.

Output Format

For each issue found, report:

[FILE]:[LINE] — [ISSUE]
  Found:    [problematic code]
  Fix:      [corrected code]

At the end, provide a summary count: X issues found across Y files. If no issues are found, report: No LESS variable issues found.