feat(core): Move plugins to part-level config

packages/core/src/design.mjs

@@ -8,12 +8,12 @@ import { addPartConfig } from './utils.mjs'
  */
 export function Design(config) {
 
-  // Merge config with defaults
+  // Initialize config with defaults
   config = {
-    parts: [],
-    options: {},
     measurements: [],
     optionalMeasurements: [],
+    options: {},
+    parts: [],
     plugins: [],
     ...config
   }
@@ -37,16 +37,7 @@ export function Design(config) {
   const pattern = function (settings) {
     Pattern.call(this, config)
 
-    // Load plugins
-    if (!Array.isArray(config.plugins)) config.plugins = [ config.plugins ]
-    for (const plugin of config.plugins) {
-      if (plugin.plugin && plugin.condition) this.useIf(plugin, settings)
-      else this.use(plugin)
-    }
-
-    this.apply(settings)
-
-    return this
+    return this.init().apply(settings)
   }
 
   // Set up inheritance

packages/core/src/pattern.mjs

@@ -173,6 +173,10 @@ Pattern.prototype.getPartList = function () {
  */
 Pattern.prototype.init = function () {
   this.initialized++
+  // Load plugins
+  if (this.config.plugins) {
+    for (const plugin of Object.values(this.config.plugins)) this.use(plugin)
+  }
   // Resolve all dependencies
   this.dependencies = this.config.dependencies
   this.inject = this.config.inject
@@ -522,12 +526,19 @@ Pattern.prototype.render = function () {
 }
 
 Pattern.prototype.on = function (hook, method, data) {
+  for (const added of this.hooks[hook]) {
+    // Don't add it twice
+    if (added.method === method) return this
+  }
   this.hooks[hook].push({ method, data })
 
   return this
 }
 
 Pattern.prototype.use = function (plugin, data) {
+  // Conditional plugin?
+  if (plugin.plugin && plugin.condition) return this.useIf(plugin, data)
+  // Regular plugin
   this.raise.info(`Loaded plugin \`${plugin.name}:${plugin.version}\``)
   if (plugin.hooks) this.loadPluginHooks(plugin, data)
   if (plugin.macros) this.loadPluginMacros(plugin)

packages/core/src/utils.mjs

@@ -567,12 +567,25 @@ export const addPartDependencies = (part, config) => {
   return config
 }
 
+// Add part-level plugins
+export const addPartPlugins = (part, config) => {
+  if (!part.plugins) return config
+  if (!Array.isArray(part.plugins)) part.plugins = [ part.plugins ]
+  for (const plugin of part.plugins) {
+    if (plugin.plugin && plugin.condition) config.plugins[plugin.plugin.name] = plugin
+    else config.plugins[plugin.name] = plugin
+  }
+
+  return config
+}
+
 export const addPartConfig = (part, config) => {
   config = addPartOptions(part, config)
   config = addPartMeasurements(part, config)
   config = addPartOptionalMeasurements(part, config)
   config = addPartDependencies(part, config)
   config = addPartOptionGroups(part, config)
+  config = addPartPlugins(part, config)
 
   return config
 }