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improve errors - #12
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katlasik
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Nov 2, 2025
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- Improve error messages with field names and annotation context
- Add customizable error printer with table format
- Add DecodingContext to pass field name and annotations through decode chain - Update ConfigError types to include field names (Missing, Invalid, Other) - Change error messages to indicate which annotation failed (env var or system property) - Update all ConfigDecoder implementations to accept DecodingContext parameter - Modify ConfigReader.read() to accept field name for better error reporting - Update all tests to reflect new error message format - Add .gitignore entries for CLAUDE.md and .claude directory
- Add ErrorPrinter trait for flexible error formatting - Implement TablePrinter with ASCII box drawing for readable error display - Implement DefaultPrinter maintaining backward compatibility with getMessage - Add print method to ConfigError accepting ErrorPrinter via context parameters - Refactor TablePrinter to use functional style (foldLeft, map, flatMap) - Update ConfigError.invalid to include fieldName parameter for better context - Add comprehensive tests with full message assertions - Document error handling in README with usage examples
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- Introduce FieldPath case class to represent hierarchical field paths - Add string interpolator (path"foo.bar") for convenient FieldPath creation - Replace fieldName: String with fieldPath: FieldPath in ConfigError types - Update DecodingContext to use FieldPath instead of String - Thread parent field path through ConfigLoader.load and deriveProduct - Update TablePrinter to display dotted paths (e.g., "dbConfig.host") - Increase TablePrinter column widths for better nested field display - Update all error construction to use FieldPath throughout codebase
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