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-rw-r--r--app/javascript/flavours/glitch/utils/js_helpers.js5
1 files changed, 5 insertions, 0 deletions
diff --git a/app/javascript/flavours/glitch/utils/js_helpers.js b/app/javascript/flavours/glitch/utils/js_helpers.js
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+++ b/app/javascript/flavours/glitch/utils/js_helpers.js
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+//  This function returns the new value unless it is `null` or
+//  `undefined`, in which case it returns the old one.
+export function overwrite (oldVal, newVal) {
+  return newVal === null || typeof newVal === 'undefined' ? oldVal : newVal;
+}