# core/persistence/viewport.persistence.ts

> 16 lines of code and 4 definitions.

Tree: Project Scripts
Language: typescript
Layer: infrastructure
Canonical: https://banes-lab.com/anatomy/scripts#file-scripts-core-persistence-viewport-persistence-ts
Source text: https://banes-lab.com/source/scripts/core/persistence/viewport.persistence.ts.txt

Listed in [core/persistence](https://banes-lab.com/api/source/scripts/core/persistence.md), after [core/persistence/snapshot.persistence.ts](https://banes-lab.com/source/scripts/core/persistence/snapshot.persistence.ts.md).

## Definitions

- `writeReport` (lexical_declaration, line 15, exported)
- `writeShot` (lexical_declaration, line 11, exported)
- `PNG_BASE64` (lexical_declaration, line 9)
- `path` (lexical_declaration, line 16, exported)

## Contained in

- [core/persistence](https://banes-lab.com/anatomy/scripts/folder-scripts-core-persistence.md)

## Uses

- [core/formatters/viewport.formatter.ts](https://banes-lab.com/source/scripts/core/formatters/viewport.formatter.ts.md)

## Used by

- [core/coordinators/viewport.coordinator.ts](https://banes-lab.com/source/scripts/core/coordinators/viewport.coordinator.ts.md)

## Linked from

- [core/coordinators](https://banes-lab.com/anatomy/scripts/folder-scripts-core-coordinators.md)
- [core/formatters](https://banes-lab.com/anatomy/scripts/folder-scripts-core-formatters.md)

## Source

```typescript
import { REPORT_FILE } from "#configuration/constants/viewport.constants";
import type { ViewportResult } from "#types/viewport.types";
import { join } from "node:path";
import process from "node:process";
import { reportJson } from "#core/formatters/viewport.formatter";
import { reportWritten } from "#configuration/strings/viewport.strings";
import { writeVerbatim } from "@govlab/canonical-write";

const PNG_BASE64 = "base64";

export const writeShot = function writeShot(outDir: string, name: string, data: string): void {
    writeVerbatim(join(outDir, name), Buffer.from(data, PNG_BASE64));
};

export const writeReport = function writeReport(outDir: string, results: readonly ViewportResult[]): void {
    const path = join(outDir, REPORT_FILE);
    writeVerbatim(path, reportJson(results));
    process.stdout.write(reportWritten(path, results.length));
};
```