Source code Package

DataLayer Source

Integrates with existing Google Analytics 4 and GTM dataLayer implementations by intercepting dataLayer.push() calls.

Installation

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Basic Setup

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How It Works

The dataLayer source intercepts dataLayer.push() calls and transforms them into walkerOS events:

1. Intercepts existing dataLayer.push() calls
2. Filters events based on prefix or custom filter function
3. Transforms dataLayer format to walkerOS event format
4. Forwards to collector for processing

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Configuration

Property	Type	Description	More
name	string	DataLayer variable name (default: dataLayer)
prefix	string	Event prefix for filtering which events to process
filter	function	Custom filter function: (event: unknown) => boolean | Promise<boolean>

Custom Filtering

Filter which dataLayer events get processed:

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Migration Strategy

Use the dataLayer source for gradual migration from GA4/GTM:

Phase 1: Add walkerOS alongside existing dataLayer

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Phase 2: Map dataLayer events to walkerOS destinations

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Phase 3: Gradually replace dataLayer.push with elb()

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Next Steps

• Review event mapping for transforming dataLayer events
• Check GA4 destination for Google Analytics integration