Merge pull request #4 from open-wc/docs/plugin-types-optional-callbacks

docs: make plugin callbacks optional

Author: thepassle

packages/analyzer/index.d.ts

@@ -76,28 +76,28 @@ export interface Plugin {
    *
    * Runs for all modules in a project, before continuing to the `analyzePhase`
    */
-  collectPhase(params: CollectPhaseParams): void;
+  collectPhase?(params: CollectPhaseParams): void;
 
   /**
    * @summary Plugin hook that runs in the analyze phase.
    *
    * Runs for each AST node in each module.
    * You can use this phase to access a module's AST nodes and mutate the manifest.
    */
-  analyzePhase(params: AnalyzePhaseParams): void;
+  analyzePhase?(params: AnalyzePhaseParams): void;
 
   /**
    * @summary Plugin hook that runs in the module-link phase.
    *
    * Post-processing hook that runs for each module, after analyzing.
    * All information about your module should now be available.
    */
-  moduleLinkPhase(params: ModuleLinkPhaseParams): void;
+  moduleLinkPhase?(params: ModuleLinkPhaseParams): void;
 
   /**
    * @summary Plugin hook that runs in the package-link phase.
    *
    * Runs once per package, after modules have been parsed and after per-module post-processing
    */
-  packageLinkPhase(params: PackageLinkPhaseParams): void;
+  packageLinkPhase?(params: PackageLinkPhaseParams): void;
 }