da8d4ecb19
Audit pass found two latent issues:
1. **NaN/Infinity broke the SVG path.** `LineChart` mapped raw values
through `yScale()` without sanitising, so any non-finite input
emitted a literal 'NaN' in the path `d` attribute and silently
broke the visible stroke for the whole series. Same shape in
`AreaChart`.
2. **`compactNumber()` was duplicated.** Three identical copies
lived in LineChart / BarChart / AreaChart.
Fixes (all in `utils.ts`):
+ `compactNumber(v)` now exported (returns '' for non-finite)
+ `filterFinite(values)` returns `[index, value]` pairs,
keeping the original X-axis spacing for the surviving points
Behavioural changes:
- LineChart `series` containing NaN/Infinity → path skips those
points cleanly. Series of *entirely* non-finite values render
nothing (was: a fully NaN-poisoned path).
- AreaChart `values` containing NaN/Infinity → same.
- BarChart unchanged (was already safe via `extent`).
Tests: 19 \u2192 23 (4 new regression cases)
utils \u00b7 compactNumber k-suffix + non-finite handling
utils \u00b7 filterFinite preserves original indices
LineChart \u00b7 NaN/Infinity never appear in path `d`
LineChart \u00b7 all-non-finite series renders zero <g>
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| .. | ||
| src | ||
| package.json | ||
| tsconfig.json | ||
| vitest.config.ts | ||