Installing dependencies.

node_modules/@semantic-release/git/lib/git.js

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+const execa = require('execa');
+const debug = require('debug')('semantic-release:git');
+
+/**
+ * Retrieve the list of files modified on the local repository.
+ *
+ * @param {Object} [execaOpts] Options to pass to `execa`.
+ *
+ * @return {Array<String>} Array of modified files path.
+ */
+async function getModifiedFiles(execaOptions) {
+  return (await execa('git', ['ls-files', '-m', '-o'], execaOptions)).stdout
+    .split('\n')
+    .map(file => file.trim())
+    .filter(file => Boolean(file));
+}
+
+/**
+ * Add a list of file to the Git index. `.gitignore` will be ignored.
+ *
+ * @param {Array<String>} files Array of files path to add to the index.
+ * @param {Object} [execaOpts] Options to pass to `execa`.
+ */
+async function add(files, execaOptions) {
+  const shell = await execa('git', ['add', '--force', '--ignore-errors', ...files], {...execaOptions, reject: false});
+  debug('add file to git index', shell);
+}
+
+/**
+ * Commit to the local repository.
+ *
+ * @param {String} message Commit message.
+ * @param {Object} [execaOpts] Options to pass to `execa`.
+ *
+ * @throws {Error} if the commit failed.
+ */
+async function commit(message, execaOptions) {
+  await execa('git', ['commit', '-m', message], execaOptions);
+}
+
+/**
+ * Push to the remote repository.
+ *
+ * @param {String} origin The remote repository URL.
+ * @param {String} branch The branch to push.
+ * @param {Object} [execaOpts] Options to pass to `execa`.
+ *
+ * @throws {Error} if the push failed.
+ */
+async function push(origin, branch, execaOptions) {
+  await execa('git', ['push', '--tags', origin, `HEAD:${branch}`], execaOptions);
+}
+
+/**
+ * Get the HEAD sha.
+ *
+ * @param {Object} [execaOpts] Options to pass to `execa`.
+ *
+ * @return {String} The sha of the head commit on the local repository
+ */
+async function gitHead(execaOptions) {
+  return (await execa('git', ['rev-parse', 'HEAD'], execaOptions)).stdout;
+}
+
+module.exports = {getModifiedFiles, add, gitHead, commit, push};