When a value for a then|else prop is given then additionalProperties …

[sverhoeven]

…must be true

Fixes #164

By setting "additionalProperties: true", you can have extra global parameters using the haddock3 catalogs so giving less_io parameter is ok, but also any other is ok. As less_io is validated against schema and other additional props are always valid.

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[sverhoeven]

Tried

latest ajv

```js import Ajv from 'ajv' const schema = { type: 'object', properties: { ifpar: { type: 'boolean', default: false } }, if: { properties: { ifpar: { const: true } } }, then: { properties: { thenpar: { type: 'number', minimum: 0 } } }, else: { properties: { elsepar: { type: 'number', minimum: 0 } } }, // additionalProperties: false // additionalProperties: true } const ajv = new Ajv({ // removeAdditional: "failing" }) const values = { ifpar: false, // ifpar: true, thenpar: -1, elsepar: -2 } const r2 = ajv.validateSchema(schema) console.log(r2) const r = ajv.validate(schema, values) console.log(r) console.log(ajv.errors) console.log(values) // console.log(JSON.stringify(schema, null, 2)) ```

python jsonschema

```python from jsonschema import validate schema = { "type": "object", "properties": { "ifpar": { "type": "boolean", "default": False } }, "if": { "properties": { "ifpar": { "const": True } } }, "then": { "properties": { "thenpar": { "type": "number", "minimum": 0 } } }, "else": { "properties": { "elsepar": { "type": "number", "minimum": 0 } } }, # "additionalProperties": False "additionalProperties": True } data = { "ifpar": False, # "ifpar": True, # "thenpar": 1, "elsepar": 2 } validate(data, schema) ```

They behave the same, without implicit or explicit "additionalProperties: true" any props defined in then|else block give additionalProperties error.