Installing dependencies.

node_modules/@semantic-release/changelog/lib/prepare.js

@@ -0,0 +1,27 @@
+const path = require('path');
+const {readFile, writeFile, ensureFile} = require('fs-extra');
+const resolveConfig = require('./resolve-config');
+
+module.exports = async (pluginConfig, {cwd, nextRelease: {notes}, logger}) => {
+  const {changelogFile, changelogTitle} = resolveConfig(pluginConfig);
+  const changelogPath = path.resolve(cwd, changelogFile);
+
+  if (notes) {
+    await ensureFile(changelogPath);
+    const currentFile = (await readFile(changelogPath)).toString().trim();
+
+    if (currentFile) {
+      logger.log('Update %s', changelogPath);
+    } else {
+      logger.log('Create %s', changelogPath);
+    }
+
+    const currentContent =
+      changelogTitle && currentFile.startsWith(changelogTitle)
+        ? currentFile.slice(changelogTitle.length).trim()
+        : currentFile;
+    const content = `${notes.trim()}\n${currentContent ? `\n${currentContent}\n` : ''}`;
+
+    await writeFile(changelogPath, changelogTitle ? `${changelogTitle}\n\n${content}` : content);
+  }
+};