fix(core): Resolve TypeScript strict mode and ES client API compatibility issues for v3.0.0

- Fix ES client v8+ API: use document/doc instead of body for index/update operations
- Add type assertions (as any) for ES client ILM, template, and search APIs
- Fix strict null checks with proper undefined handling (nullish coalescing)
- Fix MetricsCollector interface to match required method signatures
- Fix Logger.error signature compatibility in plugins
- Resolve TermsQuery type index signature conflict
- Remove sourceMap from tsconfig (handled by tsbuild with inlineSourceMap)

readme.md

@@ -89,7 +89,7 @@ await docManager.pipeDocument({
   doc: {
     name: 'Premium Widget',
     price: 99.99,
-    inStock: true
+    inStock: true,
   },
 });
 
@@ -99,7 +99,7 @@ await docManager.pipeDocument({
   doc: {
     name: 'Deluxe Gadget',
     price: 149.99,
-    inStock: false
+    inStock: false,
   },
 });
 
@@ -179,6 +179,7 @@ await kvStore.clear();
 ### ElsSmartlogDestination
 
 The main logging destination class that provides:
+
 - Automatic index rotation based on date
 - Configurable retention policies
 - Kibana-compatible log format
@@ -188,6 +189,7 @@ The main logging destination class that provides:
 ### ElasticDoc
 
 Advanced document management with:
+
 - Piping sessions for tracking document lifecycles
 - Automatic cleanup of stale documents
 - Snapshot functionality with custom processors
@@ -197,6 +199,7 @@ Advanced document management with:
 ### FastPush
 
 High-performance bulk operations:
+
 - Automatic batching for optimal performance
 - Index management (create, delete, clear)
 - Dynamic mapping support
@@ -205,6 +208,7 @@ High-performance bulk operations:
 ### KVStore
 
 Simple key-value interface:
+
 - Elasticsearch-backed storage
 - Async/await API
 - Automatic index initialization
@@ -266,6 +270,7 @@ await docManager.takeSnapshot(async (iterator, prevSnapshot) => {
 ## API Compatibility 🔄
 
 This module is built on top of `@elastic/elasticsearch` v9.x and is compatible with:
+
 - Elasticsearch 8.x and 9.x clusters
 - Kibana 8.x and 9.x for log visualization
 - OpenSearch (with some limitations)
@@ -278,7 +283,7 @@ Full TypeScript support with comprehensive type definitions:
 import type {
   IElasticDocConstructorOptions,
   ISnapshot,
-  SnapshotProcessor
+  SnapshotProcessor,
 } from '@apiclient.xyz/elasticsearch';
 ```