externalize markdown nodes to types

Move Markdown node definitions to types, as we will be reusing them in
another file in the next commit.

Author: nbusseneau

src/updateChangelog.ts

@@ -3,65 +3,7 @@ import markdown from "remark-parse";
 import stringify from "remark-stringify";
 import { VFile } from "vfile";
 import { Node, Position } from "unist";
-
-type MarkdownRootNode = {
-  type: "root";
-  children: MarkdownNode[];
-};
-
-interface HeadingNode {
-  type: "heading";
-  depth: number;
-  children: MarkdownNode[];
-  position: Position;
-}
-
-interface DefinitionNode {
-  type: "definition";
-  identifier: string;
-  label: string;
-  url: string;
-  position?: Position;
-}
-
-interface ListNode {
-  type: "list";
-  ordered: boolean;
-  start: any;
-  spread: boolean;
-  url: string;
-  children: object[];
-  position: Position;
-}
-
-interface ParagraphNode {
-  type: "paragraph";
-  children: object[];
-  position: Position;
-}
-
-interface LinkReferenceNode {
-  type: "linkReference";
-  identifier: string;
-  label: string;
-  referenceType: string;
-  children: TextNode[];
-  position?: Position;
-}
-
-interface TextNode {
-  type: "text";
-  value: string;
-  position?: Position;
-}
-
-type MarkdownNode =
-  | HeadingNode
-  | DefinitionNode
-  | ListNode
-  | ParagraphNode
-  | LinkReferenceNode
-  | TextNode;
+import { MarkdownRootNode, HeadingNode, DefinitionNode, LinkReferenceNode, TextNode } from "markdown-nodes";
 
 interface Options {
   tag: string;

types/markdown-nodes/index.d.ts

@@ -0,0 +1,62 @@
+declare module "markdown-nodes" {
+  import { Position } from "unist";
+
+  type MarkdownRootNode = {
+    type: "root";
+    children: MarkdownNode[];
+  };
+
+  interface HeadingNode {
+    type: "heading";
+    depth: number;
+    children: MarkdownNode[];
+    position: Position;
+  }
+
+  interface DefinitionNode {
+    type: "definition";
+    identifier: string;
+    label: string;
+    url: string;
+    position?: Position;
+  }
+
+  interface ListNode {
+    type: "list";
+    ordered: boolean;
+    start: any;
+    spread: boolean;
+    url: string;
+    children: object[];
+    position: Position;
+  }
+
+  interface ParagraphNode {
+    type: "paragraph";
+    children: object[];
+    position: Position;
+  }
+
+  interface LinkReferenceNode {
+    type: "linkReference";
+    identifier: string;
+    label: string;
+    referenceType: string;
+    children: TextNode[];
+    position?: Position;
+  }
+
+  interface TextNode {
+    type: "text";
+    value: string;
+    position?: Position;
+  }
+
+  type MarkdownNode =
+    | HeadingNode
+    | DefinitionNode
+    | ListNode
+    | ParagraphNode
+    | LinkReferenceNode
+    | TextNode;
+}