Function renderSparkline

renderSparkline(options: RenderSparklineOptions): string
Renders a deterministic terminal sparkline.

This pure renderer does not import Blessed. Use the blessed-components/sparkline subpath to keep the Blessed adapter outside the module graph.

When downsampling is required, the series is divided into ordered buckets and each bucket keeps its maximum value. This preserves narrow peaks. A constant series uses the middle glyph to avoid division by zero.

Output shape:
```
[optional label and value]
[graph][optional summary]
```
With no metadata, only the graph line is returned.
Parameters
- options: RenderSparklineOptions
  Series, domain, width, glyphs, and optional metadata.
Returns string
Plain text without ANSI sequences or Blessed tags.
Throws
RangeError Thrown when width is not a positive integer.

Throws
RangeError Thrown when fewer than two non-empty characters are provided.

Throws
RangeError Thrown when any sample or domain bound is not finite.

Throws
RangeError Thrown when an explicit domain does not have max > min.
Example: Basic series
```
import { renderSparkline } from 'blessed-components/sparkline';

renderSparkline({
  values: [1, 2, 3, 4, 5, 6, 7, 8],
  width: 8,
});
// "▁▂▃▄▅▆▇█"
```
Example: Metadata and summary
```
renderSparkline({
  label: 'Downloads',
  value: '25.2M',
  values: [1, 3, 2, 8],
  width: 4,
  summary: 'peak: 8M',
});
// "Downloads 25.2M\n▁▃▂█ peak: 8M"
```
- Defined in components/visualization/sparkline/index.ts:134

Function renderSparkline

Parameters

Returns string

Throws

Throws

Throws

Throws

Example: Basic series

Example: Metadata and summary

Settings