Mozaic MCP Server

import { readFileSync, existsSync } from "fs"; import { join } from "path"; import type { Token } from "./types.js"; interface GridValue { value: number; } interface GridTokens { size?: { gutter?: { screen?: { [key: string]: GridValue }; }; }; } interface BaseTokens { "magic-unit"?: GridValue; "local-rem-value"?: GridValue; } const MAGIC_UNIT_PX = 16; // 1 magic unit = 16px export async function parseGridTokens(tokensPath: string): Promise<Token[]> { const tokens: Token[] = []; const sizePath = join(tokensPath, "properties", "size"); if (!existsSync(sizePath)) { console.warn(`Size tokens path not found: ${sizePath}`); return tokens; } // Parse grid.json (gutter sizes) const gridFile = join(sizePath, "grid.json"); if (existsSync(gridFile)) { try { const content = readFileSync(gridFile, "utf-8"); const data = JSON.parse(content) as GridTokens; const relativePath = "properties/size/grid.json"; const gutterData = data.size?.gutter?.screen || {}; for (const [screenName, gutterDef] of Object.entries(gutterData)) { if (typeof gutterDef !== "object" || !("value" in gutterDef)) continue; const muValue = gutterDef.value; const pxValue = muValue * MAGIC_UNIT_PX; tokens.push({ category: "grid", subcategory: "gutter", name: `gutter-${screenName}`, path: `grid.gutter.screen.${screenName}`, cssVariable: `--grid-gutter-${screenName}`, scssVariable: `$size-gutter-screen-${screenName}`, valueRaw: `${muValue}mu`, valueNumber: muValue, valueUnit: "mu", valueComputed: `${pxValue}px`, description: `Grid gutter for ${screenName} screens (${muValue} magic units = ${pxValue}px)`, platform: "all", sourceFile: relativePath, }); } } catch (error) { console.warn(`Warning: Could not parse ${gridFile}:`, error); } } // Parse base.json (magic unit and rem value) const baseFile = join(sizePath, "base.json"); if (existsSync(baseFile)) { try { const content = readFileSync(baseFile, "utf-8"); const data = JSON.parse(content) as BaseTokens; const relativePath = "properties/size/base.json"; // Magic unit if (data["magic-unit"]) { const muValue = data["magic-unit"].value; tokens.push({ category: "grid", subcategory: "base", name: "magic-unit", path: "grid.magic-unit", cssVariable: "--magic-unit", scssVariable: "$magic-unit", valueRaw: `${muValue}`, valueNumber: muValue, valueUnit: undefined, valueComputed: `${muValue * MAGIC_UNIT_PX}px`, description: "Base magic unit multiplier (1mu = 16px)", platform: "all", sourceFile: relativePath, }); } // Local rem value if (data["local-rem-value"]) { const remValue = data["local-rem-value"].value; tokens.push({ category: "grid", subcategory: "base", name: "local-rem-value", path: "grid.local-rem-value", cssVariable: "--local-rem-value", scssVariable: "$local-rem-value", valueRaw: `${remValue}px`, valueNumber: remValue, valueUnit: "px", valueComputed: `${remValue}px`, description: "Base rem value (1rem = 16px)", platform: "all", sourceFile: relativePath, }); } } catch (error) { console.warn(`Warning: Could not parse ${baseFile}:`, error); } } return tokens; }