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Marc-André Bombeck
6182d45354
The decimal lint covered components and app only, and sentences for people are built in src/lib too: the weekday weight correlation printed "0.8 kg" into a German sentence, and the no-key fallback and the period narrative's fallback spelled fractions with a full stop. Those three use the new formatDecimal from format-locale with the reader's locale. The rule now covers src/lib and src/hooks; text for the model, operator log lines, SVG data, zone checks and wire values a client re-formats carry a reasoned directive.
46 lines
1.9 KiB
TypeScript
46 lines
1.9 KiB
TypeScript
/**
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* The numeric value of a lab reading in the edit sheet.
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*
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* A converted reading is stored at full precision (5.6 mmol/L of glucose is
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* 100.90191999999999 mg/dL), and the sheet must not open with that tail. The
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* field starts from the value at the precision every lab surface shows it:
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* whole numbers bare, two decimals. Two decimals carry too little of a small
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* value, though (a TSH of 0.004 would open as "0"), so below 1 the field keeps
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* three significant figures instead. Written with a dot, which the sheet's
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* parser reads, rather than in the reader's locale, which an input cannot
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* round-trip, and never in exponent notation.
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*/
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export function valueEditSeed(value: number): string {
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if (Number.isInteger(value)) return String(value);
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const magnitude = Math.floor(Math.log10(Math.abs(value)));
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const decimals = Math.min(
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MAX_SEED_DECIMALS,
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Math.max(DISPLAY_DECIMALS, SEED_SIGNIFICANT_FIGURES - 1 - magnitude),
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);
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// eslint-disable-next-line healthlog/no-unlocalised-decimal -- seeds an input whose parser reads the full stop back
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return value
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.toFixed(decimals)
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.replace(/(\.\d*?)0+$/, "$1")
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.replace(/\.$/, "");
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}
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const DISPLAY_DECIMALS = 2;
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const SEED_SIGNIFICANT_FIGURES = 3;
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/** `toFixed` accepts up to 100; no lab value needs more than this. */
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const MAX_SEED_DECIMALS = 20;
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/**
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* What the edit PUT sends for the value. A field the person did not touch is
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* omitted (`undefined`), so the stored full-precision number stays as it is and
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* a converted reading keeps its "converted from" record: sending the rounded
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* start value back would both lose precision and read to the server as a new
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* number. A changed field sends the parsed number.
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*/
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export function resolveValueForUpdate(args: {
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seed: string;
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editorValue: string;
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parsed: number;
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}): number | undefined {
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return args.editorValue.trim() === args.seed.trim() ? undefined : args.parsed;
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}
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