Add strict to tsconfig.json

Author: wooorm

index.js

@@ -1,5 +1,5 @@
 /**
- * @typedef {import('mdast').Content} Node
+ * @typedef {import('mdast').Content|import('mdast').Root} Node
  */
 
 import {visit} from 'unist-util-visit'
@@ -12,37 +12,39 @@ import {visit} from 'unist-util-visit'
  * @returns {T}
  */
 export function compact(tree) {
-  visit(tree, visitor)
-
-  return tree
-
-  /** @type {import('unist-util-visit').Visitor<Node>} */
-  function visitor(child, index, parent) {
-    const siblings = parent ? parent.children : []
-    const previous = index && siblings[index - 1]
-
-    if (
-      (child.type === 'text' || child.type === 'blockquote') &&
-      previous &&
-      child.type === previous.type
-    ) {
-      if ('value' in child) {
-        // @ts-ignore must be text.
-        previous.value += child.value
+  visit(
+    tree,
+    /** @type {import('unist-util-visit').Visitor<Node>} */
+    // @ts-expect-error: fine.
+    (child, index, parent) => {
+      if (
+        parent &&
+        index &&
+        (child.type === 'text' || child.type === 'blockquote') &&
+        child.type === parent.children[index - 1].type
+      ) {
+        const previous = parent.children[index - 1]
+
+        if ('value' in child) {
+          // @ts-expect-error must be text.
+          previous.value += child.value
+        }
+
+        if ('children' in child) {
+          // @ts-expect-error must be block quote.
+          previous.children = previous.children.concat(child.children)
+        }
+
+        parent.children.splice(index, 1)
+
+        if (previous.position && child.position) {
+          previous.position.end = child.position.end
+        }
+
+        return index
       }
-
-      if ('children' in child) {
-        // @ts-ignore must be block quote.
-        previous.children = previous.children.concat(child.children)
-      }
-
-      siblings.splice(index, 1)
-
-      if (previous.position && child.position) {
-        previous.position.end = child.position.end
-      }
-
-      return index
     }
-  }
+  )
+
+  return tree
 }

tsconfig.json

@@ -10,6 +10,7 @@
     "declaration": true,
     "emitDeclarationOnly": true,
     "allowSyntheticDefaultImports": true,
-    "skipLibCheck": true
+    "skipLibCheck": true,
+    "strict": true
   }
 }