Method lookupMappingKey

src/core/FieldMapper.ts:127–129

* Look up the FieldMapping key for a given frontmatter property name. * * IMPORTANT: This returns the MAPPING KEY (e.g., "completeInstances"), * NOT the frontmatter property name (e.g., "complete_instances"). * * Use this to check if a property is recognized/mapped, but DO NOT use * the

(frontmatterPropertyName: string)

	 * lookupMappingKey("unknown_field")      // Returns: null
	 */
	lookupMappingKey(frontmatterPropertyName: string): keyof FieldMapping | null {
		return lookupMappingKey(this.mapping, frontmatterPropertyName);
	}

	/**
	 * Check if a frontmatter property name is a recognized/configured field.