Fix a bug with getting the highest bump type

index.ts

@@ -2,13 +2,9 @@ import * as core from "@actions/core";
 import { exec } from "@actions/exec";
 import * as github from "@actions/github";
 import fs from "fs-extra";
-import unified from "unified";
-import remarkParse from "remark-parse";
-import remarkStringify from "remark-stringify";
-// @ts-ignore
-import mdastToString from "mdast-util-to-string";
 import getWorkspaces, { Workspace } from "get-workspaces";
 import path from "path";
+import { getChangelogEntry } from "./utils";
 
 async function execWithOutput(
   command: string,
@@ -293,67 +289,3 @@ async function execWithOutput(
   console.error(err);
   core.setFailed(err.message);
 });
-
-enum BumpLevels {
-  dep = 0,
-  patch = 1,
-  minor = 2,
-  major = 3
-}
-
-function getChangelogEntry(changelog: string, version: string) {
-  let ast = unified()
-    .use(remarkParse)
-    .parse(changelog);
-
-  let highestLevel = BumpLevels.dep;
-
-  let nodes = ast.children as Array<any>;
-  let headingStartInfo:
-    | {
-        index: number;
-        depth: number;
-      }
-    | undefined;
-  let endIndex: number | undefined;
-
-  for (let i = 0; i < nodes.length; i++) {
-    let node = nodes[i];
-    if (node.type === "heading") {
-      let stringified: string = mdastToString(node);
-      let match = stringified.toLowerCase().match(/(major|minor|patch)/);
-      if (match !== null) {
-        let level = BumpLevels[match[0] as "major" | "minor" | "patch"];
-        highestLevel = Math.max(level, highestLevel);
-      }
-      if (headingStartInfo === undefined && stringified === version) {
-        headingStartInfo = {
-          index: i,
-          depth: node.depth
-        };
-        continue;
-      }
-    }
-
-    if (
-      endIndex === undefined &&
-      headingStartInfo !== undefined &&
-      node.type === "heading" &&
-      headingStartInfo.depth === node.depth
-    ) {
-      endIndex = i;
-    }
-  }
-  if (headingStartInfo) {
-    ast.children = (ast.children as any).slice(
-      headingStartInfo.index + 1,
-      endIndex
-    );
-  }
-  return {
-    content: unified()
-      .use(remarkStringify)
-      .stringify(ast),
-    highestLevel: highestLevel
-  };
-}