Docs: expand info about use with worker threads

docs/install.md

@@ -248,11 +248,17 @@ esbuild app.js --bundle --platform=node --external:sharp
 
 ## Worker threads
 
-The main thread must call `require('sharp')`
-before worker threads are created
-to ensure shared libraries remain loaded in memory
+On some platforms, including glibc-based Linux,
+the main thread must call `require('sharp')`
+_before_ worker threads are created.
+This is to ensure shared libraries remain loaded in memory
 until after all threads are complete.
 
+Without this, the following error may occur:
+```
+Module did not self-register
+```
+
 ## Known conflicts
 
 ### Canvas and Windows

docs/search-index/extract.js

@@ -9,7 +9,7 @@ const extractDescription = (str) =>
     .replace(/\s+/g, ' ')
     .replace(/[^A-Za-z0-9_/\-,. ]/g, '')
     .replace(/\s+/g, ' ')
-    .substr(0, 180)
+    .substring(0, 200)
     .trim();
 
 const extractParameters = (str) =>

docs/search-index/stop-words.js

@@ -21,6 +21,7 @@ module.exports = [
   'can',
   'containing',
   'contains',
+  'created',
   'current',
   'date',
   'default',
@@ -43,6 +44,8 @@ module.exports = [
   'how',
   'image',
   'implies',
+  'include',
+  'including',
   'involve',
   'its',
   'last',
@@ -69,6 +72,7 @@ module.exports = [
   'provided',
   'ready',
   'requires',
+  'requiresharp',
   'returned',
   'same',
   'see',
@@ -77,6 +81,7 @@ module.exports = [
   'should',
   'since',
   'site',
+  'some',
   'specified',
   'spelling',
   'such',