Refactor to move implementation to lib/

Author: wooorm

index.js

@@ -1,95 +1,6 @@
 /**
- * @typedef {import('mdast').Root|import('mdast').Content} Node
- * @typedef {Extract<Node, import('mdast').Parent>} Parent
- *
- * @typedef ZoneInfo
- *   Extra info.
- * @property {Parent} parent
- *   Parent of the range.
- * @property {number} start
- *   Index of `start` in `parent`
- * @property {number} end
- *   Index of `end` in `parent`
- *
- * @callback Handler
- *   Callback called when a range is found.
- * @param {Node} start
- *   Start of range.
- * @param {Array<Node>} between
- *   Nodes between `start` and `end`.
- * @param {Node} end
- *   End of range.
- * @param {ZoneInfo} info
- *   Extra info.
- * @returns {Array<Node>|null|undefined|void}
- *   Nodes to replace.
+ * @typedef {import('./lib/index.js').Handler} Handler
+ * @typedef {import('./lib/index.js').ZoneInfo} ZoneInfo
  */
 
-import {commentMarker} from 'mdast-comment-marker'
-import {visit} from 'unist-util-visit'
-
-/**
- * @param {Node} node
- *   Tree to search.
- * @param {string} name
- *   Comment name to look for.
- * @param {Handler} callback
- *   Callback called when a range is found.
- */
-export function zone(node, name, callback) {
-  /** @type {number|undefined} */
-  let level
-  /** @type {Node|undefined} */
-  let marker
-  /** @type {Parent|undefined} */
-  let scope
-
-  visit(
-    node,
-    /**
-     * Gather one dimensional zones.
-     */
-    (node, index, parent) => {
-      const info = commentMarker(node)
-      const match =
-        info && info.name === name && info.attributes.match(/(start|end)\b/)
-      const type = match && match[0]
-
-      if (parent && index !== null && type) {
-        if (!scope && type === 'start') {
-          level = 0
-          marker = node
-          scope = /** @type {Parent} */ (parent)
-        }
-
-        if (typeof level === 'number' && marker && scope && parent === scope) {
-          if (type === 'start') {
-            level++
-          } else {
-            level--
-          }
-
-          if (type === 'end' && !level) {
-            // @ts-expect-error: Assume `scope` is a valid parent of `node`.
-            const start = scope.children.indexOf(marker)
-
-            const result = callback(
-              marker,
-              scope.children.slice(start + 1, index),
-              node,
-              {start, end: index, parent: scope}
-            )
-
-            if (result) {
-              // @ts-expect-error: Assume the correct children are passed.
-              scope.children.splice(start, index - start + 1, ...result)
-            }
-
-            marker = undefined
-            scope = undefined
-          }
-        }
-      }
-    }
-  )
-}
+export {zone} from './lib/index.js'

lib/index.js

@@ -0,0 +1,95 @@
+/**
+ * @typedef {import('mdast').Root|import('mdast').Content} Node
+ * @typedef {Extract<Node, import('mdast').Parent>} Parent
+ *
+ * @typedef ZoneInfo
+ *   Extra info.
+ * @property {Parent} parent
+ *   Parent of the range.
+ * @property {number} start
+ *   Index of `start` in `parent`
+ * @property {number} end
+ *   Index of `end` in `parent`
+ *
+ * @callback Handler
+ *   Callback called when a range is found.
+ * @param {Node} start
+ *   Start of range.
+ * @param {Array<Node>} between
+ *   Nodes between `start` and `end`.
+ * @param {Node} end
+ *   End of range.
+ * @param {ZoneInfo} info
+ *   Extra info.
+ * @returns {Array<Node>|null|undefined|void}
+ *   Nodes to replace.
+ */
+
+import {commentMarker} from 'mdast-comment-marker'
+import {visit} from 'unist-util-visit'
+
+/**
+ * @param {Node} node
+ *   Tree to search.
+ * @param {string} name
+ *   Comment name to look for.
+ * @param {Handler} callback
+ *   Callback called when a range is found.
+ */
+export function zone(node, name, callback) {
+  /** @type {number|undefined} */
+  let level
+  /** @type {Node|undefined} */
+  let marker
+  /** @type {Parent|undefined} */
+  let scope
+
+  visit(
+    node,
+    /**
+     * Gather one dimensional zones.
+     */
+    (node, index, parent) => {
+      const info = commentMarker(node)
+      const match =
+        info && info.name === name && info.attributes.match(/(start|end)\b/)
+      const type = match && match[0]
+
+      if (parent && index !== null && type) {
+        if (!scope && type === 'start') {
+          level = 0
+          marker = node
+          scope = /** @type {Parent} */ (parent)
+        }
+
+        if (typeof level === 'number' && marker && scope && parent === scope) {
+          if (type === 'start') {
+            level++
+          } else {
+            level--
+          }
+
+          if (type === 'end' && !level) {
+            // @ts-expect-error: Assume `scope` is a valid parent of `node`.
+            const start = scope.children.indexOf(marker)
+
+            const result = callback(
+              marker,
+              scope.children.slice(start + 1, index),
+              node,
+              {start, end: index, parent: scope}
+            )
+
+            if (result) {
+              // @ts-expect-error: Assume the correct children are passed.
+              scope.children.splice(start, index - start + 1, ...result)
+            }
+
+            marker = undefined
+            scope = undefined
+          }
+        }
+      }
+    }
+  )
+}

package.json

@@ -31,6 +31,7 @@
   "main": "index.js",
   "types": "index.d.ts",
   "files": [
+    "lib/",
     "index.d.ts",
     "index.js"
   ],