Add oneOf to JSON Schema

docs/emitters/json-schema/reference/decorators.md

@@ -258,6 +258,22 @@ Specify that the numeric type must be a multiple of some numeric value.
 | ----- | ----------------- | -------------------------------------------------- |
 | value | `valueof numeric` | The numeric type must be a multiple of this value. |
 
+### `@oneOf` {#@TypeSpec.JsonSchema.oneOf}
+
+Specify that `oneOf` should be used instead of `anyOf` for that union.
+
+```typespec
+@TypeSpec.JsonSchema.oneOf
+```
+
+#### Target
+
+`Union | ModelProperty`
+
+#### Parameters
+
+None
+
 ### `@prefixItems` {#@TypeSpec.JsonSchema.prefixItems}
 
 Specify that the target array must begin with the provided types.

docs/emitters/json-schema/reference/index.mdx

@@ -52,6 +52,7 @@ npm install --save-peer @typespec/json-schema
 - [`@minContains`](./decorators.md#@TypeSpec.JsonSchema.minContains)
 - [`@minProperties`](./decorators.md#@TypeSpec.JsonSchema.minProperties)
 - [`@multipleOf`](./decorators.md#@TypeSpec.JsonSchema.multipleOf)
+- [`@oneOf`](./decorators.md#@TypeSpec.JsonSchema.oneOf)
 - [`@prefixItems`](./decorators.md#@TypeSpec.JsonSchema.prefixItems)
 - [`@uniqueItems`](./decorators.md#@TypeSpec.JsonSchema.uniqueItems)
 

packages/json-schema/README.md

@@ -95,6 +95,7 @@ When true, emit all references as json schema files, even if the referenced type
 - [`@minContains`](#@mincontains)
 - [`@minProperties`](#@minproperties)
 - [`@multipleOf`](#@multipleof)
+- [`@oneOf`](#@oneof)
 - [`@prefixItems`](#@prefixitems)
 - [`@uniqueItems`](#@uniqueitems)
 
@@ -348,6 +349,22 @@ Specify that the numeric type must be a multiple of some numeric value.
 | ----- | ----------------- | -------------------------------------------------- |
 | value | `valueof numeric` | The numeric type must be a multiple of this value. |
 
+#### `@oneOf`
+
+Specify that `oneOf` should be used instead of `anyOf` for that union.
+
+```typespec
+@TypeSpec.JsonSchema.oneOf
+```
+
+##### Target
+
+`Union | ModelProperty`
+
+##### Parameters
+
+None
+
 #### `@prefixItems`
 
 Specify that the target array must begin with the provided types.

packages/typespec-vscode/ThirdPartyNotices.txt

@@ -9,9 +9,15 @@ components are set forth below. Microsoft reserves all rights not expressly
 granted herein, whether by implication, estoppel or otherwise.
 
 1. balanced-match version 1.0.2 (https://github.com/juliangruber/balanced-match)
-2. brace-expansion version 2.0.1 (https://github.com/juliangruber/brace-expansion)
-3. minimatch version 5.1.6 (https://github.com/isaacs/minimatch)
-4. semver version 7.6.2 (https://github.com/npm/node-semver)
+2. balanced-match version 1.0.2 (https://github.com/juliangruber/balanced-match)
+3. brace-expansion version 2.0.1 (https://github.com/juliangruber/brace-expansion)
+4. brace-expansion version 2.0.1 (https://github.com/juliangruber/brace-expansion)
+5. lru-cache version 6.0.0 (https://github.com/isaacs/node-lru-cache)
+6. minimatch version 5.1.6 (https://github.com/isaacs/minimatch)
+7. minimatch version 5.1.6 (https://github.com/isaacs/minimatch)
+8. semver version 7.6.2 (https://github.com/npm/node-semver)
+9. semver version 7.5.4 (https://github.com/npm/node-semver)
+10. yallist version 4.0.0 (https://github.com/isaacs/yallist)
 
 
 %% balanced-match NOTICES AND INFORMATION BEGIN HERE
@@ -42,6 +48,62 @@ SOFTWARE.
 END OF balanced-match NOTICES AND INFORMATION
 
 
+%% balanced-match NOTICES AND INFORMATION BEGIN HERE
+=====================================================
+(MIT)
+
+Copyright (c) 2013 Julian Gruber <julian@juliangruber.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+=====================================================");
+END OF balanced-match NOTICES AND INFORMATION
+
+
+%% brace-expansion NOTICES AND INFORMATION BEGIN HERE
+=====================================================
+MIT License
+
+Copyright (c) 2013 Julian Gruber <julian@juliangruber.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+=====================================================");
+END OF brace-expansion NOTICES AND INFORMATION
+
+
 %% brace-expansion NOTICES AND INFORMATION BEGIN HERE
 =====================================================
 MIT License
@@ -70,6 +132,50 @@ SOFTWARE.
 END OF brace-expansion NOTICES AND INFORMATION
 
 
+%% lru-cache NOTICES AND INFORMATION BEGIN HERE
+=====================================================
+The ISC License
+
+Copyright (c) Isaac Z. Schlueter and Contributors
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+=====================================================");
+END OF lru-cache NOTICES AND INFORMATION
+
+
+%% minimatch NOTICES AND INFORMATION BEGIN HERE
+=====================================================
+The ISC License
+
+Copyright (c) 2011-2023 Isaac Z. Schlueter and Contributors
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+=====================================================");
+END OF minimatch NOTICES AND INFORMATION
+
+
 %% minimatch NOTICES AND INFORMATION BEGIN HERE
 =====================================================
 The ISC License
@@ -111,4 +217,48 @@ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
 IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 =====================================================");
-END OF semver NOTICES AND INFORMATION
+END OF semver NOTICES AND INFORMATION
+
+
+%% semver NOTICES AND INFORMATION BEGIN HERE
+=====================================================
+The ISC License
+
+Copyright (c) Isaac Z. Schlueter and Contributors
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+=====================================================");
+END OF semver NOTICES AND INFORMATION
+
+
+%% yallist NOTICES AND INFORMATION BEGIN HERE
+=====================================================
+The ISC License
+
+Copyright (c) Isaac Z. Schlueter and Contributors
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+=====================================================");
+END OF yallist NOTICES AND INFORMATION