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Prefix Event Titles

What it does: Prepends a text prefix (e.g. [Synced]) to every event title before writing it to the target calendar.

Use case: When merging multiple calendars into one view, prefixes help you quickly identify which calendar each event came from.

function gate(event: GateEvent): GateResult {
  return { pass: true, transform: { title: `[Synced] ${event.title}` } };
}

How It Works​

The transform.title field on the GateResult lets you rewrite the event's title. Using a template literal, you can prepend text to the original event.title so the result still contains the real meeting name alongside the prefix.

Customization​

Use a different prefix:

function gate(event: GateEvent): GateResult {
  return { pass: true, transform: { title: `[Work] ${event.title}` } };
}

Add an emoji prefix:

function gate(event: GateEvent): GateResult {
  return { pass: true, transform: { title: `🗓 ${event.title}` } };
}

Conditionally prefix only recurring events:

function gate(event: GateEvent): GateResult {
  if (event.recurrence && event.recurrence.length > 0) {
    return { pass: true, transform: { title: `[Recurring] ${event.title}` } };
  }
  return { pass: true };
}

Prefix based on time of day:

function gate(event: GateEvent): GateResult {
  const prefix = event.hour < 12 ? '[AM]' : '[PM]';
  return { pass: true, transform: { title: `${prefix} ${event.title}` } };
}