# core/parsers/tool.ts-prune.parser.ts

> 29 lines of code and 9 definitions.

Tree: GovLab Quality
Language: typescript
Layer: processing
Canonical: https://banes-lab.com/anatomy/quality#file-quality-core-parsers-tool-ts-prune-parser-ts
Source text: https://banes-lab.com/source/quality/core/parsers/tool.ts-prune.parser.ts.txt

Listed in [core/parsers](https://banes-lab.com/api/source/quality/core/parsers.md), after [core/parsers/tool.trivy.parser.ts](https://banes-lab.com/source/quality/core/parsers/tool.trivy.parser.ts.md) and before [core/parsers/tool.yamllint.parser.ts](https://banes-lab.com/source/quality/core/parsers/tool.yamllint.parser.ts.md).

## Definitions

- `parseLine` (lexical_declaration, line 11)
- `parseTsPruneOutput` (lexical_declaration, line 30, exported)
- `TOOL` (lexical_declaration, line 7)
- `USED_IN_MODULE` (lexical_declaration, line 8)
- `SEPARATOR` (lexical_declaration, line 9)
- `sep` (lexical_declaration, line 12)
- `location` (lexical_declaration, line 13)
- `colon` (lexical_declaration, line 14)
- `line` (lexical_declaration, line 15)

## Contained in

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

## Uses

- [configuration/strings/tool.strings.ts](https://banes-lab.com/source/quality/configuration/strings/tool.strings.ts.md)
- [core/factories/finding.factory.ts](https://banes-lab.com/source/quality/core/factories/finding.factory.ts.md)
- [core/parsers/location.parser.ts](https://banes-lab.com/source/quality/core/parsers/location.parser.ts.md)

## Linked from

- [configuration/strings](https://banes-lab.com/anatomy/quality/folder-quality-configuration-strings.md)
- [core/factories](https://banes-lab.com/anatomy/quality/folder-quality-core-factories.md)
- [core/parsers](https://banes-lab.com/anatomy/quality/folder-quality-core-parsers.md)

## Source

```typescript
import type { Finding } from "#types/finding.types";
import { POSITION } from "#configuration/constants/tool.constants";
import { advisoryFinding } from "#core/factories/finding.factory";
import { parseLines } from "#core/parsers/location.parser";
import { unimportedExport } from "#configuration/strings/tool.strings";

const TOOL = "ts-prune";
const USED_IN_MODULE = "(used in module)";
const SEPARATOR = " - ";

const parseLine = function parseLine(raw: string, ecosystem: string): Finding | null {
    const sep = raw.endsWith(USED_IN_MODULE) ? -1 : raw.indexOf(SEPARATOR);
    const location = sep === -1 ? "" : raw.slice(0, sep);
    const colon = location.lastIndexOf(":");
    const line = colon === -1 ? Number.NaN : Number(location.slice(colon + 1));
    if (!Number.isInteger(line)) {
        return null;
    }
    return advisoryFinding({
        column: POSITION,
        ecosystem,
        file: location.slice(0, colon),
        line,
        message: unimportedExport(raw.slice(sep + SEPARATOR.length).trim()),
        ruleId: "unused-export",
        tool: TOOL,
    });
};

export const parseTsPruneOutput = function parseTsPruneOutput(stdout: string, ecosystem: string): Finding[] {
    return parseLines(stdout, (line) => parseLine(line, ecosystem));
};
```