Function parse

parse(content: string): { type: string; schema: any; isValid: boolean }
Parser for payloadSchema tags - defines JSON Schema for MQTT payload validation

This parser handles the payloadSchema tag that defines JSON Schema for validating MQTT message payloads. It supports:
- Inline JSON Schema definitions
- External file references
- Schema validation with AJV
Parameters
- content: string
  Raw content from the payloadSchema tag
Returns { type: string; schema: any; isValid: boolean }
Parsed schema information or null if parsing fails
Example: Inline JSON Schema
```
// Input: 'inline\n{"type": "object", "properties": {"temp": {"type": "number"}}}'
// Output: { type: "inline", schema: {...}, isValid: true }
```
Example: External file reference
```
// Input: "file schemas/telemetry.json"
// Output: { type: "file", schema: "schemas/telemetry.json", isValid: true }
```
Since
4.1.0

Public
- Defined in core/parsers/mqtt_payload_schema.ts:32