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https://github.com/gherking/gherkin-formatter

Tool to format gherkin-ast model to gherkin string
https://github.com/gherking/gherkin-formatter

ast cucumber feature-file formatter gherkin gherking hacktoberfest typescript

Last synced: 18 days ago
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Tool to format gherkin-ast model to gherkin string

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# gherkin-formatter

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Tool to format gherkin-ast model to gherkin string

## Usage

The format function of this package provides a formatted string (gherkin document) from
your [AST](https://github.com/gherking/gherkin-ast).

In TypeScript

```typescript
import { format, FormatOptions } from "gherkin-formatter";
import { Document } from "gherkin-ast";
import { read } from "gherkin-io";

const document: Document[] = await read("./test.feature");
const options: FormatOptions = {separateStepGroups: false};
console.log(format(document[0], options));
// Feature: Test Feature
//
// As a user...
```

In JavaScript

```javascript
const {format, FormatOptions} = require("gherkin-formatter");
const {Document} = require("gherkin-ast");
const {read} = require("gherkin-io");

const document = await read("./test.feature");
const options = {
separateStepGroups: false
};
console.log(format(document[0], options));
// Feature: Test Feature
//
// As a user...
```

### Configuration - `FormatConfig`

Passing a `FormatConfig` object to format method (or other Ast type methods where it's applicable), how feature file
text is rendered can be set.

| Option | Description | Default |
|:---------------------|:---------------------------------------------------------------------------------------|:---------------------------------------------------------------------------------------|
| `oneTagPerLine` | Should the tags be rendered separately, one by line? | `false`, i.e., all tags of a scenario, feature, etc. will be rendered in the same line |
| `separateStepGroups` | Should step groups (when-then) be separated? | `false` |
| `compact` | Should empty lines be skipped, removed from the result? | `false`, i.e., there will be empty lines in appropriate places |
| `lineBreak` | The line break character(s). | `null`, i.e., it will determine the line-break based on the platform |
| `indentation` | The indentation character(s). | `' '`, i.e., it uses two space characters to add indentation where it's appropriate |
| `tagFormat` | The tag format to be used (see [gherkin-ast](https://github.com/gherking/gherkin-ast). | `TagFormat.FUNCTIONAL`, i.e., the tags will be outputed as `@name(value)` |

## Other

For detailed documentation see the [TypeDocs documentation](https://gherking.github.io/gherkin-formatter/).

This package uses [debug](https://www.npmjs.com/package/debug) for logging, use `gherkin-formatter` to see debug logs:

```shell
DEBUG=gherkin-formatter* node my-script.js
```