AddTags appends a tag to the tags field of ms.

AddTagsWithKey appends a tag to the key field of ms.

MergeFields merges the top-level keys and values in each source map (it does not perform a deep merge).

MergeFieldsDeep recursively merges the keys and values from `from` into `target`, either into ms itself (if underRoot == true) or into ms["fields"] (if underRoot == false).

NewMPointer initializes and returns a pointer to the given M.

Union creates a new M containing the union of the key-value pairs of the two maps.

Event metadata constants.

Event metadata constants.

ErrKeyNotFound indicates that the specified key was not found.

EventMetadata contains fields and tags that can be added to an event via configuration.

Pointer stores a pointer to atomically get/set a mapstr.M object This should give faster access for use cases with lots of reads and a few changes.

M is a map[string]interface{} wrapper with utility methods for common map operations like converting to JSON.