Function: fieldScalar()

fieldScalar(field): string | undefined

The primary scalar of a field: its first repeat's first component, decoded. Returns undefined for a truly empty field so callers can distinguish "absent" from a value: never defaulting a missing value.

Parameters

field

AstmField | undefined

Returns

string | undefined

Example

import { fieldScalar, tokenizeRecord, CANONICAL_DELIMITERS } from "@cosyte/astm";
const f = tokenizeRecord("R|1|^^^687|28.6", CANONICAL_DELIMITERS);
fieldScalar(f[3]); // "28.6"