1 files changed, 28 insertions, 0 deletions
diff --git a/app/assets/javascripts/diffs/utils/suggestions.js b/app/assets/javascripts/diffs/utils/suggestions.js
new file mode 100644
index 00000000000..a272f7f3257
--- /dev/null
+++ b/app/assets/javascripts/diffs/utils/suggestions.js
@@ -0,0 +1,28 @@
+function removeEmptyProperties(dict) {
+  const noBlanks = Object.entries(dict).reduce((final, [key, value]) => {
+    const upd = { ...final };
+
+    // The number 0 shouldn't be falsey when we're printing variables
+    if (value || value === 0) {
+      upd[key] = value;
+    }
+
+    return upd;
+  }, {});
+
+  return noBlanks;
+}
+
+export function computeSuggestionCommitMessage({ message, values = {} } = {}) {
+  const noEmpties = removeEmptyProperties(values);
+  const matchPhrases = Object.keys(noEmpties)
+    .map((key) => `%{${key}}`)
+    .join('|');
+  const replacementExpression = new RegExp(`(${matchPhrases})`, 'gm');
+
+  return message.replace(replacementExpression, (match) => {
+    const key = match.replace(/(^%{|}$)/gm, '');
+
+    return noEmpties[key];
+  });
+}