TRP.js v0.3.0 release

[athewsey]

Issue #, if available: #78, #80

Description of changes:

• Expose separate confidence scores for OCR (aggregate) vs K-V structure, on Form fields, keys, and values, and tables, rows and cells.
  • Similar to pyTRP's add_kv_ocr_confidence pipeline but, in-keeping with TRP.js' general design, implemented as a dynamically calculated view rather than an explicit JSON mutation step.
• Expose EntityTypes for tables (structured vs semi-structured) and table cells (e.g. column header, title, footer, etc) as requested by #78
  • Usually in TRP.js we don't directly expose lists from the source JSON, to avoid users accidentally mutating them with unexpected consequences. Therefore current draft is a readonly property Table.tableType and a checker function Cell.hasEntityTypes(...) which I think should together support typical use-cases... But appreciate feedback on this!
• Accessors for Textract Queries results as requested by #80
  • Page-level access for now - a combined document-level view would be nice, but require extra work that isn't done at this stage

Testing:

• Unit tests expanded to cover new features
• Test build available on NPM at v0.3.0-alpha.5 - feedback appreciated!

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[athewsey]

Some alpha user feedback:

1. It's not obvious from where to import AggregationMethod to configure e.g. getOcrConfidence(AggregationMethod.Min) - would be helpful to clarify this
2. Would prefer getOcrConfidence() to return null rather than Infinity/-Infinity/NaN when the input is empty - particularly because DynamoDB doesn't support these special floating point values and JavaScript behaves weirdly with some of them (for e.g. JSON.stringify converts Infinity to null!).
3. There's currently no nice way to create/iterate table Rows ignoring merged cells: Table.cellAt() and Table.cellsAt() support an ignoreMerged option, but listRows(), rowAt(), etc do not.

[athewsey]

Initial alpha feedback has been addressed and no recent requests - releasing & merging 0.3.0