Suppress console.log on mobile devices

Overview

console.log and console.clear are invaluable for debugging data events during development. However, leaving them in production code can cause unexpected errors or UI interruptions on the Fulcrum mobile app.

This snippet overrides both functions at the top of your data event so that:

• On web/desktop — logging works exactly as normal.
• On mobile — console.log and console.clear calls are silently ignored.

Place this block at the very top of any data event to make all subsequent console.log calls safe to leave in production.

Code

// ─── SAFE CONSOLE LOGGING (add to the top of every data event) ───────────────

// Store the original functions
const _originalLog   = console.log;
const _originalClear = console.clear;

// Override console.log — no-op on mobile, normal on web/desktop
console.log = function (...args) {
  if (!ISMOBILE()) {
    _originalLog.apply(console, args);
  }
};

// Override console.clear — no-op on mobile, normal on web/desktop
console.clear = function (...args) {
  if (!ISMOBILE()) {
    _originalClear.apply(console, args);
  }
};

// ─────────────────────────────────────────────────────────────────────────────
// Your data event code below — console.log is now safe to use anywhere
// ─────────────────────────────────────────────────────────────────────────────

ON('load-record', () => {
  console.log('Record loaded:', RECORDID()); // safe on mobile — silently ignored
  // ...
});

Notes

• Place the override block before any ON() handlers or function declarations so it takes effect for the entire script.
• This uses ISMOBILE(), which is a built-in Fulcrum expression that returns true when the record is open in the iOS or Android app.
• This pattern is safe to add to all data events as a best practice. It has zero performance impact on mobile since the function body returns immediately without executing anything.
• console.error and console.warn are not overridden here — those are typically intentional and less likely to cause mobile issues. Add them to the override if needed.