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feat: add discriminator
tag to generate if-then
schemas
#1376
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,10 @@ | ||
export interface A { | ||
type: string; | ||
} | ||
|
||
export interface B {} | ||
|
||
/** | ||
* @discriminator type | ||
*/ | ||
export type MyType = A | B; |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,6 @@ | ||
/** | ||
* @discriminator name | ||
*/ | ||
export interface MyType { | ||
name: string; | ||
} |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,14 @@ | ||
export type Fish = { | ||
animal_type: "fish"; | ||
found_in: "ocean" | "river"; | ||
}; | ||
|
||
export type Bird = { | ||
animal_type: "bird"; | ||
can_fly: boolean; | ||
}; | ||
|
||
/** | ||
* @discriminator animal_type | ||
*/ | ||
export type Animal = Bird | Fish; |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,65 @@ | ||
{ | ||
"$ref": "#/definitions/Animal", | ||
"$schema": "http://json-schema.org/draft-07/schema#", | ||
"definitions": { | ||
"Animal": { | ||
"allOf": [ | ||
{ | ||
"if": { | ||
"properties": { | ||
"animal_type": { | ||
"const": "bird", | ||
"type": "string" | ||
} | ||
} | ||
}, | ||
"then": { | ||
"$ref": "#/definitions/Bird" | ||
} | ||
}, | ||
{ | ||
"if": { | ||
"properties": { | ||
"animal_type": { | ||
"const": "fish", | ||
"type": "string" | ||
} | ||
} | ||
}, | ||
"then": { | ||
"$ref": "#/definitions/Fish" | ||
} | ||
} | ||
] | ||
}, | ||
"Bird": { | ||
"additionalProperties": false, | ||
"properties": { | ||
"animal_type": { | ||
"const": "bird", | ||
"type": "string" | ||
}, | ||
"can_fly": { | ||
"type": "boolean" | ||
} | ||
}, | ||
"required": ["animal_type", "can_fly"], | ||
"type": "object" | ||
}, | ||
"Fish": { | ||
"additionalProperties": false, | ||
"properties": { | ||
"animal_type": { | ||
"const": "fish", | ||
"type": "string" | ||
}, | ||
"found_in": { | ||
"enum": ["ocean", "river"], | ||
"type": "string" | ||
} | ||
}, | ||
"required": ["animal_type", "found_in"], | ||
"type": "object" | ||
} | ||
} | ||
} |
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Can you file an issue for this? A fixme in the code here is too easy to overlook.
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I was incorrect, filtering never types from unions is valid. However, I thought this statement would be superfluous as never types are filtered upon construction of the union. Apparently, this is not always the case, as the
hidden
tests point out.