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feat(cli): update tailwind export to v4 format #33

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121 changes: 107 additions & 14 deletions bun.lock
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1 change: 1 addition & 0 deletions package.json
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
{
"name": "design-monorepo",
"private": true,
"packageManager": "bun@1.1.20",
"workspaces": [
"packages/*"
],
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10 changes: 5 additions & 5 deletions packages/cli/src/linter/index.test.ts
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Expand Up @@ -72,11 +72,11 @@ The palette uses a deep "Evergreen" primary for health-sector credibility.
// ── Tailwind assertions ─────────────────────────────────────────
expect(result.tailwindConfig.success).toBe(true);
if (result.tailwindConfig.success) {
const config = result.tailwindConfig.data;
expect(config.theme?.extend?.colors?.['primary']).toBe('#647d66');
expect(config.theme?.extend?.fontFamily?.['headline-lg']).toContain('Google Sans Display');
expect(config.theme?.extend?.borderRadius?.['full']).toBe('9999px');
expect(config.theme?.extend?.spacing?.['gutter-s']).toBe('8px');
const css = result.tailwindConfig.data;
expect(css).toContain('--color-primary: #647d66;');
expect(css).toContain("--typography-headline-lg-font-family: Google Sans Display;");
expect(css).toContain('--border-radius-full: 9999px;');
expect(css).toContain('--spacing-gutter-s: 8px;');
}
});

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138 changes: 44 additions & 94 deletions packages/cli/src/linter/tailwind/handler.test.ts
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Expand Up @@ -13,103 +13,53 @@
// limitations under the License.

import { describe, it, expect } from 'bun:test';
import type { DesignSystemState } from '../model/spec.js';
import { TailwindEmitterHandler } from './handler.js';
import { ModelHandler } from '../model/handler.js';
import type { ParsedDesignSystem } from '../parser/spec.js';

const emitter = new TailwindEmitterHandler();
const modelHandler = new ModelHandler();
describe('TailwindV4EmitterHandler', () => {
it('should export design tokens to Tailwind v4 CSS variables', () => {
const mockState: DesignSystemState = {
name: 'Test Design System',
description: 'A test',
findings: [],
symbolTable: new Map(),
sections: [],
colors: new Map([
['primary', { type: 'color', hex: '#1A1C1E', r: 26, g: 28, b: 30, a: 1, luminance: 0.005 }],
['secondary', { type: 'color', hex: '#6C7278', r: 108, g: 114, b: 120, a: 1, luminance: 0.17 }],
]),
typography: new Map([
['h1', {
type: 'typography',
fontFamily: 'Public Sans',
fontSize: { type: 'dimension', value: 3, unit: 'rem' },
}],
]),
spacing: new Map([
['sm', { type: 'dimension', value: 8, unit: 'px' }],
]),
rounded: new Map([
['md', { type: 'dimension', value: 8, unit: 'px' }],
]),
components: new Map(),
};

function buildState(overrides: Partial<ParsedDesignSystem> = {}) {
const parsed: ParsedDesignSystem = { sourceMap: new Map(), ...overrides };
const result = modelHandler.execute(parsed);
const hasErrors = result.findings.some(d => d.severity === 'error');
if (hasErrors) {
throw new Error(`Model build failed: ${result.findings.map(d => d.message).join(', ')}`);
}
return result.designSystem;
}
const handler = new TailwindEmitterHandler();
const result = handler.execute(mockState);

describe('TailwindEmitterHandler', () => {
// ── Cycle 22: Colors map to theme.extend.colors ─────────────────
describe('colors mapping', () => {
it('maps resolved colors to theme.extend.colors', () => {
const state = buildState({
colors: { primary: '#647D66', secondary: '#ff0000' },
});
const result = emitter.execute(state);
if (!result.success) throw new Error('Expected success');
const config = result.data;
expect(config.theme.extend.colors?.['primary']).toBe('#647d66');
expect(config.theme.extend.colors?.['secondary']).toBe('#ff0000');
});
});

// ── Cycle 23: Typography maps to fontFamily + fontSize ──────────
describe('typography mapping', () => {
it('maps typography scales to fontFamily and fontSize', () => {
const state = buildState({
typography: {
'headline-lg': {
fontFamily: 'Google Sans Display',
fontSize: '42px',
fontWeight: 500,
lineHeight: '50px',
letterSpacing: '1.2px',
},
'body-lg': {
fontFamily: 'Roboto',
fontSize: '14px',
fontWeight: 400,
lineHeight: '20px',
},
},
});
const result = emitter.execute(state);
if (!result.success) throw new Error('Expected success');
const config = result.data;

// fontFamily
expect(config.theme.extend.fontFamily?.['headline-lg']).toContain('Google Sans Display');
expect(config.theme.extend.fontFamily?.['body-lg']).toContain('Roboto');

// fontSize with metadata tuple
const hlFontSize = config.theme.extend.fontSize?.['headline-lg'];
expect(hlFontSize).toBeDefined();
expect(hlFontSize?.[0]).toBe('42px');
expect(hlFontSize?.[1]?.['lineHeight']).toBe('50px');
expect(hlFontSize?.[1]?.['letterSpacing']).toBe('1.2px');
});
});

// ── Cycle 24: Rounded + spacing map correctly ───────────────────
describe('dimensions mapping', () => {
it('maps rounded to borderRadius and spacing to spacing', () => {
const state = buildState({
rounded: { regular: '4px', lg: '8px', full: '9999px' },
spacing: { 'gutter-s': '8px', 'gutter-l': '16px' },
});
const result = emitter.execute(state);
if (!result.success) throw new Error('Expected success');
const config = result.data;

expect(config.theme.extend.borderRadius?.['regular']).toBe('4px');
expect(config.theme.extend.borderRadius?.['lg']).toBe('8px');
expect(config.theme.extend.borderRadius?.['full']).toBe('9999px');

expect(config.theme.extend.spacing?.['gutter-s']).toBe('8px');
expect(config.theme.extend.spacing?.['gutter-l']).toBe('16px');
});
});

// ── Empty state produces empty config ─────────────────────────────
describe('empty state', () => {
it('produces a valid config with empty extend sections', () => {
const state = buildState({});
const result = emitter.execute(state);
if (!result.success) throw new Error('Expected success');
const config = result.data;
expect(config.theme.extend).toBeDefined();
});
expect(result.success).toBe(true);
if (result.success) {
const expectedCss = [
'@theme {',
' --color-primary: #1A1C1E;',
' --color-secondary: #6C7278;',
" --typography-h1-font-family: Public Sans;",
" --typography-h1-font-size: 3rem;",
' --spacing-sm: 8px;',
' --border-radius-md: 8px;',
'}',
].join('\n');
expect(result.data).toEqual(expectedCss);
}
});
});
72 changes: 23 additions & 49 deletions packages/cli/src/linter/tailwind/handler.ts
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Expand Up @@ -13,71 +13,45 @@
// limitations under the License.

import type { TailwindEmitterSpec, TailwindEmitterResult } from './spec.js';
import type { DesignSystemState, ResolvedDimension } from '../model/spec.js';
import type { DesignSystemState } from '../model/spec.js';

function toKebabCase(s: string) {
return s
.replace(/([a-z0-9]|(?=[A-Z]))([A-Z])/g, '$1-$2')
.toLowerCase()
.replace(/^-/, '');
}

/**
* Pure function mapping DesignSystemState → Tailwind theme.extend config.
* Pure function mapping DesignSystemState → Tailwind v4 CSS variables.
* No side effects.
*/
export class TailwindEmitterHandler implements TailwindEmitterSpec {
execute(state: DesignSystemState): TailwindEmitterResult {
return {
success: true,
data: {
theme: {
extend: {
colors: this.mapColors(state),
fontFamily: this.mapFontFamilies(state),
fontSize: this.mapFontSizes(state),
borderRadius: this.mapDimensions(state.rounded),
spacing: this.mapDimensions(state.spacing),
},
},
}
};
}
const lines: string[] = ['@theme {'];

private mapColors(state: DesignSystemState): Record<string, string> {
const result: Record<string, string> = {};
for (const [name, color] of state.colors) {
result[name] = color.hex;
lines.push(` --color-${toKebabCase(name)}: ${color.hex};`);
}
return result;
}

private mapFontFamilies(state: DesignSystemState): Record<string, string[]> {
const result: Record<string, string[]> = {};
for (const [name, typo] of state.typography) {
if (typo.fontFamily) {
result[name] = [typo.fontFamily];
}
const prefix = ` --typography-${toKebabCase(name)}`;
if (typo.fontFamily) lines.push(`${prefix}-font-family: ${typo.fontFamily};`);
if (typo.fontSize) lines.push(`${prefix}-font-size: ${typo.fontSize.value}${typo.fontSize.unit};`);
if (typo.fontWeight) lines.push(`${prefix}-font-weight: ${typo.fontWeight};`);
if (typo.letterSpacing) lines.push(`${prefix}-letter-spacing: ${typo.letterSpacing.value}${typo.letterSpacing.unit};`);
if (typo.lineHeight) lines.push(`${prefix}-line-height: ${typo.lineHeight.value}${typo.lineHeight.unit || ''};`);
}
return result;
}

private mapFontSizes(state: DesignSystemState): Record<string, [string, Record<string, string>]> {
const result: Record<string, [string, Record<string, string>]> = {};
for (const [name, typo] of state.typography) {
if (typo.fontSize) {
const meta: Record<string, string> = {};
if (typo.lineHeight) meta['lineHeight'] = this.dimToString(typo.lineHeight);
if (typo.letterSpacing) meta['letterSpacing'] = this.dimToString(typo.letterSpacing);
if (typo.fontWeight !== undefined) meta['fontWeight'] = String(typo.fontWeight);
result[name] = [this.dimToString(typo.fontSize), meta];
}
for (const [name, dim] of state.spacing) {
lines.push(` --spacing-${toKebabCase(name)}: ${dim.value}${dim.unit};`);
}
return result;
}

private mapDimensions(dims: Map<string, { value: number; unit: string }>): Record<string, string> {
const result: Record<string, string> = {};
for (const [name, dim] of dims) {
result[name] = this.dimToString(dim);
for (const [name, dim] of state.rounded) {
lines.push(` --border-radius-${toKebabCase(name)}: ${dim.value}${dim.unit};`);
}
return result;
}

private dimToString(dim: { value: number; unit: string }): string {
return `${dim.value}${dim.unit}`;
lines.push('}');
return { success: true, data: lines.join('\n') };
}
}
13 changes: 3 additions & 10 deletions packages/cli/src/linter/tailwind/spec.ts
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Expand Up @@ -32,19 +32,12 @@ export type TailwindThemeExtend = z.infer<typeof TailwindThemeExtendSchema>;
export const TailwindEmitterResultSchema = z.discriminatedUnion('success', [
z.object({
success: z.literal(true),
data: z.object({
theme: z.object({
extend: TailwindThemeExtendSchema
})
})
data: z.string(),
}),
z.object({
success: z.literal(false),
error: z.object({
code: z.string(),
message: z.string()
})
})
error: z.instanceof(Error),
}),
]);

export type TailwindEmitterResult = z.infer<typeof TailwindEmitterResultSchema>;
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