Validate API

Surfaces bad data and paints the offending points red on the chart; for the full story see the Insights guide.

Try it - the bad points paint red and surface as warnings:

validate

onDataWarning → no warnings

Import

import { validate, validateSeries, invalidPoints } from "@michi-vz/insights/validate";

Signature & options

validate(options?) returns a plugin that reports problems via onDataWarning and, when highlighting is on, draws a red marker on each invalid point.

Name	Type	Default	What it does
options.highlight	boolean	true	Highlight invalid points on the chart with a red marker. Set to false for warnings only.

Two helpers run the same checks without a chart:

Function	Returns	What it does
validateSeries(series)	DataWarning[]	Reports dataset-level problems: non-finite-value, duplicate-date, non-monotonic-date, and empty-dataset.
invalidPoints(series)	Array<{ index, date, value, kind }>	Lists each bad point, where kind is "non-finite", "duplicate-date", or "non-monotonic".

This is distinct from highlightItems, which highlights a whole series; validate highlights the bad points instead.

Example

import { validate } from "@michi-vz/insights/validate";

// Warn via onDataWarning and mark bad points red.
chart.use(validate());

// Warnings only, no red markers.
chart.use(validate({ highlight: false }));

Insights guide