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CHANGELOG.md

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Changelog

Data Layer Observer follows semantic versioning when releasing updates.

Code status Stage Example version
Backward compatible bug fixes Patch release 1.0.1
Backward compatible new features Minor release 1.1.0
Changes that break backward compatibility Major release 2.0.0

History

4.0.4

  • Update some build dependencies

4.0.3

  • Fixes some syntax incompatible with older browsers

4.0.2

  • Adds an endsWith operator for properties.

4.0.1

  • Fixes an issue where the new parse operator was not properly registered to be available for use.

4.0.0

  • Adds an ignoreSuffixed option to the convert operator which excludes properties with known type suffixes when specifying enumerate: true. This option defaults to true.
  • Adds a parse operator which can parse out key/value pairs or an array from a string based on given delimeters.

3.0.0

  • Adds an ignore option to the convert operator which excludes properties from conversion when specifying enumerate: true.
  • null object values are now treated as empty objects which halt data handler pipeline processing and which are not processed by selectors. Fixes an issue with Google data layers where legitimate null events would cause errors to be logged.
  • Removes the record log level.
  • Removes the previously deprecated rule count telemetry type.

2.1.2

  • Updating developement dependencies.

2.1.1

  • Prevent the telemetry provider from sending a Rule Registration metric if there are no rules registered.
  • Prevent the DefaultTelemetryProvider from exporting or sending negative or non number spans.

2.1.0

  • Adds rule count attribute to rule registration span telemetry. Deprecates dedicated rule count telemetry type for removal in a future release.

2.0.1

  • Fixed a bug where debounce time was included in measured event handling duration

2.0.0

  • Changes telemetry collection interfaces from e.g. Telemetry.getInstance().startSpan to Telemetry.startSpan
  • Instruments significant timing and count metrics

1.13.1

  • Fixed an initialization bug which prevented configuring a log level of 0

1.13.0

  • Added telemetry provider and exporter concepts to measure timings, error counts, and other metrics. Telemetry is currently initialized but otherwise unused

1.12.1

  • Change made to allow searching for empty strings with '' or "". Technically any string comparison can be quoted, but this was specifically added for searching for empty string

1.12.0

  • Rules can no longer be triggered by changes to properties which don't match a rule's selector

1.11.0

  • Empty objects are no longer passed to rule operators. This prevents empty objects from being sent to configured rule destinations. Empty objects are defined as empty arrays or objects where all first-level child keys have undefined values

1.10.2

  • Fixed Object doesn't support property or method 'startsWith' error in IE11

1.10.1

  • suffix operator maxProps should not count properties with undefined values
  • suffix operator explicitly stops processing if provided an undefined or null object to be suffixed

1.10.0

  • Added rule options waitUntil and maxRetry related to scheduling rule registration
  • Updated default behavior of rule registration: waiting for both a defined data layer object and at least one property defined
  • Adjusted rule registration logic to schedule using exponential backoff times

1.9.0

  • suffix operator limits number of properties in an object to 100 (configurable with maxProps)

1.8.0

  • Performance improvement to prevent emitting change events for the same value
  • Configurable debounce property for rules; allows waiting longer before handling data layer events
  • Fix to prevent the enumerate option in the convert operator from converting empty strings to 0

1.7.2

  • Fix to allow rule-specific readOnLoad to override global readOnLoad

1.7.1

  • Additional log messages when adding operators

1.7.0

  • Updated beforeDestination to accept a list allowing multiple operators to execute
  • Updated convert operator to accept negative index (read from end of a data list)

1.6.5

  • Adjusted suffixing behavior for pageName, displayName, and email to support FS APIs

1.6.4

  • Move EmptyEvent scenario from log level warn to debug

1.6.3

  • Fix flatten operator bug related to mutating objects in list-based data layers

1.6.2

  • Fix console.error messages related to logging appender

1.6.1

  • Fix incorrect suffix behavior when using FS.event source parameter
  • FullStoryAppender logger source updated to dlo-log

1.6.0

  • enumerate option added to convert operator
  • Tealium sample updated to use enumerate option
  • Added order_ property selector to Tealium sample

1.5.2

  • Check if push and unshift exist in older browsers

1.5.1

  • Fix convert operator to trim spaces if a space separated CSV is supplied

1.5.0

  • Added = and != undefined comparison for object properties

1.4.4

  • Bug fix in string != comparison

1.4.3

  • Expose logging level as config option _dlo_logLevel

1.4.2

  • Debouncing added to limit the number of log events for similar error messages

1.4.1

  • Normalized numbers as real by default to prevent ambiguous int for numbers like 200.00

1.4.0

  • Monitoring properties is limited to only the properties in the object returned from the source selector, which may be a subset of all properties
  • Added !^ and =^ comparison for query operator
  • Updated Google rules to better ignore gtm.* events
  • Added Google rule to support gtg Arguments object in the dataLayer

1.3.3

  • Log message cleanup

1.3.2

  • Fix bug related to usage of globalThis in older browsers

1.3.1

  • Fix bug in query selector syntax that prevented parsing rules with . in the property or value
  • Fix timing related issue with rule registration
  • Add clarity around rule registration failure message

1.3.0

  • Added defaultValue option for insert operator

1.2.1

  • Addressed bug in convert operator where an undefined property is created and set to a value of 0, 0.0, or false depending on the conversion type

1.2.0

  • Automatically monitor array unshift similar to existing push monitoring
  • Performance benchmarks added to docs
  • Convert operator supports arrays and reduces to a single value for single element arrays

1.1.0

  • Monitor property changes on data layer objects
  • Monitor function calls (e.g. dataLayer.push)
  • Two new operators added: Rename and Fan-Out
  • Google Analytics examples
  • Updated packaging to support NPM and programmatic usage

1.0.0

  • Initial release supporting static data layers
  • CEDDL compatibility with examples