Implementation

library(stocktipr6)
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#> Attaching package: 'stocktipr6'
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Technical Implementation Details

Shiny Integration

All R6 modules maintain full compatibility with Shiny’s module system:

1. UI Methods: Return valid Shiny tag objects suitable for embedding in any UI
2. Server Methods: Use shiny::moduleServer(private$id, ...) internally
3. Namespace Functions: Store and use shiny::NS() in private field
4. Reactives: Return reactive values/expressions directly from $server() methods

Data Pipeline Architecture

ModInputs$server() → inputs_r (reactive list)
                       ↓
ModOutputs$server(inputs_r) → prices_r (eventReactive on fetch)
                                ↓
                            returns_r (reactive computation)
                                ↓
                            perf_r (reactive summary)
                                ↓
ModDownload$server(inputs_r, perf_r) → handles download

Logging Architecture

stocktipr6/app                 # App-level events
├── stocktipr6/inputs        # Input module events
├── stocktipr6/outputs       # Output module events
│   ├── stocktipr6/tooltip   # Tooltip dispatch
│   └── stocktipr6/hoverinfo # Hover-info rendering
└── stocktipr6/download      # Download module events

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Package Configuration

DESCRIPTION File

Key sections:

• Package: stocktipr6
• Version: 0.1.0
• Type: Package with Shiny application
• Imports: R6, shiny, bslib, dplyr, tidyquant, reactable, logger, etc.
• Suggests: testthat, knitr
• Config/testthat/edition: 3 (modern testthat)
• Roxygen2: Configured for documentation generation

renv.lock (Dependencies)

Pins exact versions for reproducibility: - R 4.5.0 - 30+ packages with specific versions