# Filter()

Processes filter conditions / values

**Returns**

- `Void`

## process(a, b, comparison, additional, options)

Processes filter comparison values, and comparison

**Parameters**

| Name          | Type      | Description                                      |
|---------------|-----------|--------------------------------------------------|
| a             | `string`  |                                                  |
| b             | `string`  |                                                  |
| comparison    | `string`  |                                                  |
| additional    | `array`   | Additional operator, a, b, and comparison fields |
| options       | `object`  |                                                  |
| options.setTaskStatus | `boolean` | If the task statis should be                     |
| options.strLabel | `string`  | The text to set as the task's label              |

**Returns**

- `boolean`

## doProcessAdditional(additional)

Prevent empty context.trigger.metadata.additional values from being processed eg. metadata.additional: \[{operator: 'and', comparison: 'equals'}\]

**Parameters**

| Name       | Type   | Description |
|------------|--------|-------------|
| additional | `Array` |             |

**Returns**

- `boolean`

## normalizeValue(value)

Convert comparison value from a string to something more comparable

**Parameters**

| Name   | Type   | Description |
|--------|--------|-------------|
| value  | `string` |             |

**Returns**

- `string` `boolean` `number`

## runCompare(a, b, comparison)

Runs compare with two values

**Parameters**

| Name       | Type                           | Description |
|------------|--------------------------------|-------------|
| a          | `string` `boolean` `number`   |             |
| b          | `string` `boolean` `number`   |             |
| comparison | `string`                       |             |

**Returns**

- `boolean`

## stringify(a, b, comparison, additional)

Processes filter comparison values, and comparison

**Parameters**

| Name       | Type                           | Description |
|------------|--------------------------------|-------------|
| a          | `string` `boolean` `number`   |             |
| b          | `string` `boolean` `number`   |             |
| comparison | `string`                       |             |
| additional | `array`                        | Additional operator, a, b, and comparison fields |

**Returns**

- `string`

## printableString(str)

Replace '' NaN with the string `(empty)`, handle other non-string types

**Parameters**

| Name | Type                           | Description |
|------|--------------------------------|-------------|
| str  | `string` `boolean` `number`    |             |

**Returns**

- `string`

## isEmpty(str)

Determine if a variable is empty. Definition of empty: undefined, null, empty string "", empty array \[\], empty object \{\}

**Parameters**

| Name | Type                           | Description |
|------|--------------------------------|-------------|
| str  | `string` `boolean` `number`    |             |

**Returns**

- `boolean`