define createLogger API

[eloytoro]

Motivation

As of today there's no easy way to send RUM errors or actions that share the same tags, this is something that makes a lot of sense if you wish to define scopes for your application that all share the same information.

Changes

Introduce a new API that allows to specify a context to all addError and addAction calls from it

{
  // ... rum public api methods
  createReporter: (component: string, conf?: ReporterConfiguration) => Reporter
  // ...
}
export interface Reporter {
  addAction: RumPublicApi['addAction']
  addError: RumPublicApi['addError']
}
export interface ReporterConfiguration {
  context?: object
}

This new createReporter method returns an object that has the addError and addAction methods that will add the context supplied to the reporter to any events sent from them

const reporter = createReporter('MyComponent', {
  context: { team: 'datadog' }
})

reporter.addError(new Error()) // will have context.team:datadog

Testing

Unit tests were defined

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 60.86957% with 9 lines in your changes missing coverage. Please review.

Project coverage is 93.58%. Comparing base (4623045) to head (c9898cb).

Files with missing lines	Patch %	Lines
packages/rum-core/src/boot/rumPublicApi.ts	60.86%	9 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3286      +/-   ##
==========================================
- Coverage   93.68%   93.58%   -0.10%     
==========================================
  Files         288      288              
  Lines        7611     7634      +23     
  Branches     1735     1738       +3     
==========================================
+ Hits         7130     7144      +14     
- Misses        481      490       +9     

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[cit-pr-commenter]

Bundles Sizes Evolution

📦 Bundle Name	Base Size	Local Size	𝚫	𝚫%	Status
Rum	145.29 KiB	145.91 KiB	634 B	+0.43%	✅
Logs	51.09 KiB	51.09 KiB	0 B	0.00%	✅
Rum Slim	104.08 KiB	104.61 KiB	536 B	+0.50%	✅
Worker	24.50 KiB	24.50 KiB	0 B	0.00%	✅

🚀 CPU Performance

Action Name	Base Average Cpu Time (ms)	Local Average Cpu Time (ms)	𝚫
addglobalcontext	0.002	0.002	-0.000
addaction	0.052	0.035	-0.017
addtiming	0.001	0.001	0.000
adderror	0.089	0.047	-0.042
startstopsessionreplayrecording	0.012	0.011	-0.001
startview	0.454	0.498	0.044
logmessage	0.026	0.021	-0.005

🧠 Memory Performance

Action Name	Base Consumption Memory (bytes)	Local Consumption Memory (bytes)	𝚫 (bytes)
addglobalcontext	27.43 KiB	27.84 KiB	414 B
addaction	53.85 KiB	56.10 KiB	2.25 KiB
addtiming	25.98 KiB	26.84 KiB	877 B
adderror	59.66 KiB	60.84 KiB	1.17 KiB
startstopsessionreplayrecording	25.93 KiB	26.33 KiB	414 B
startview	413.10 KiB	418.59 KiB	5.49 KiB
logmessage	59.05 KiB	58.92 KiB	-133 B

🔗 RealWorld