diff --git a/404.html b/404.html index 434848d7b..37583ab89 100644 --- a/404.html +++ b/404.html @@ -18,13 +18,13 @@ - - + + -

404

How did we get here?
+ - + diff --git a/api.html b/api.html index 2d3c3e5a1..e57feed6c 100644 --- a/api.html +++ b/api.html @@ -18,8 +18,8 @@ - - + +
Ajv JSON schema validator
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If your schemas use "),a("code",[t._v("$schema")]),t._v(" keyword, you need to add draft-07 meta-schema to Ajv instance:")]),t._v(" "),a("code-group",[a("code-block",{attrs:{title:"JavaScript"}},[a("div",{staticClass:"language-javascript extra-class"},[a("pre",{pre:!0,attrs:{class:"language-javascript"}},[a("code",[a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("const")]),t._v(" draft7MetaSchema "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("require")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token string"}},[t._v('"ajv/dist/refs/json-schema-draft-07.json"')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v("\najv"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("addMetaSchema")]),a("span",{pre:!0,attrs:{class:"token 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If your schemas use "),a("code",[t._v("$schema")]),t._v(" keyword, you need to add draft-06 meta-schema to Ajv instance. This example shows how to support both draft-06 and draft-07 schemas:")]),t._v(" "),a("code-group",[a("code-block",{attrs:{title:"JavaScript"}},[a("div",{staticClass:"language-javascript extra-class"},[a("pre",{pre:!0,attrs:{class:"language-javascript"}},[a("code",[a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("const")]),t._v(" Ajv "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("require")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token string"}},[t._v('"ajv"')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("const")]),t._v(" draft6MetaSchema "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("require")]),a("span",{pre:!0,attrs:{class:"token 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"),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("new")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[t._v("Ajv")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v("\najv"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("addMetaSchema")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("draft6MetaSchema"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v("\n")])])])])],1),t._v(" "),a("h3",{attrs:{id:"draft-04"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#draft-04"}},[t._v("#")]),t._v(" draft-04")]),t._v(" "),a("p",[t._v("You can use JSON Schema draft-04 schemas with Ajv from v8.5.0 and the additional package "),a("a",{attrs:{href:"https://github.com/ajv-validator/ajv-draft-04",target:"_blank",rel:"noopener noreferrer"}},[t._v("ajv-draft-04"),a("OutboundLink")],1),t._v(" (both ajv and ajv-draft-04 should be installed).")]),t._v(" "),a("code-group",[a("code-block",{attrs:{title:"JavaScript"}},[a("div",{staticClass:"language-javascript extra-class"},[a("pre",{pre:!0,attrs:{class:"language-javascript"}},[a("code",[a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("const")]),t._v(" Ajv "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("require")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token string"}},[t._v('"ajv-draft-04"')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("const")]),t._v(" ajv "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("new")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[t._v("Ajv")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v("\n")])])])]),t._v(" "),a("code-block",{attrs:{title:"TypeScript"}},[a("div",{staticClass:"language-typescript extra-class"},[a("pre",{pre:!0,attrs:{class:"language-typescript"}},[a("code",[a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("import")]),t._v(" Ajv "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("from")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token string"}},[t._v('"ajv-draft-04"')]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("const")]),t._v(" ajv "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("new")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[t._v("Ajv")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v("\n")])])])])],1),t._v(" "),a("div",{staticClass:"custom-block warning"},[a("p",{staticClass:"custom-block-title"},[t._v("Ajv cannot combine multiple JSON Schema versions")]),t._v(" "),a("p",[t._v("You can only use this import with JSON Schema draft-04, you cannot combine multiple JSON Schema versions in this ajv instance.")])]),t._v(" "),a("h2",{attrs:{id:"openapi-support"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#openapi-support"}},[t._v("#")]),t._v(" OpenAPI support")]),t._v(" "),a("p",[t._v("Ajv supports these additional "),a("a",{attrs:{href:"https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.1.0.md",target:"_blank",rel:"noopener noreferrer"}},[t._v("OpenAPI specification"),a("OutboundLink")],1),t._v(" keywords:")]),t._v(" "),a("ul",[a("li",[a("a",{attrs:{href:"#nullable"}},[t._v("nullable")]),t._v(" - to avoid using "),a("code",[t._v("type")]),t._v(" keyword with array of types.")]),t._v(" "),a("li",[a("a",{attrs:{href:"#discriminator"}},[t._v("discriminator")]),t._v(" - to optimize validation and error reporting of tagged unions")])]),t._v(" "),a("h2",{attrs:{id:"json-data-type"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#json-data-type"}},[t._v("#")]),t._v(" JSON data type")]),t._v(" "),a("h3",{attrs:{id:"type"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#type"}},[t._v("#")]),t._v(" "),a("code",[t._v("type")])]),t._v(" "),a("p",[a("code",[t._v("type")]),t._v(" keyword requires that the data is of certain type (or some of types). 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It also introduces additional security aspects to consider.")]),e._v(" "),t("p"),t("div",{staticClass:"table-of-contents"},[t("ul",[t("li",[t("a",{attrs:{href:"#security-contact"}},[e._v("Security contact")])]),t("li",[t("a",{attrs:{href:"#untrusted-schemas"}},[e._v("Untrusted schemas")])]),t("li",[t("a",{attrs:{href:"#circular-references-in-javascript-objects"}},[e._v("Circular references in JavaScript objects")])]),t("li",[t("a",{attrs:{href:"#security-risks-of-trusted-schemas"}},[e._v("Security risks of trusted schemas")])]),t("li",[t("a",{attrs:{href:"#redos-attack"}},[e._v("ReDoS attack")])]),t("li",[t("a",{attrs:{href:"#content-security-policy"}},[e._v("Content Security Policy")])])])]),t("p"),e._v(" "),t("h2",{attrs:{id:"security-contact"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#security-contact"}},[e._v("#")]),e._v(" Security contact")]),e._v(" "),t("p",[e._v("To report a security vulnerability, please use the\n"),t("a",{attrs:{href:"https://tidelift.com/security",target:"_blank",rel:"noopener noreferrer"}},[e._v("Tidelift security contact"),t("OutboundLink")],1),e._v(".\nTidelift will coordinate the fix and disclosure. Please do NOT report security vulnerabilities via GitHub issues.")]),e._v(" "),t("h2",{attrs:{id:"untrusted-schemas"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#untrusted-schemas"}},[e._v("#")]),e._v(" Untrusted schemas")]),e._v(" "),t("p",[e._v("Ajv treats JSON schemas as trusted as your application code. This security model is based on the most common use case, when the schemas are static and bundled together with the application.")]),e._v(" "),t("p",[e._v("If your schemas are received from untrusted sources (or generated from untrusted data) there are several scenarios you need to prevent:")]),e._v(" "),t("ul",[t("li",[e._v("compiling schemas can cause stack overflow (if they are too deep)")]),e._v(" "),t("li",[e._v("compiling schemas can be slow (e.g. "),t("a",{attrs:{href:"https://github.com/ajv-validator/ajv/issues/557",target:"_blank",rel:"noopener noreferrer"}},[e._v("#557"),t("OutboundLink")],1),e._v(")")]),e._v(" "),t("li",[e._v("validating certain data can be slow")])]),e._v(" "),t("p",[e._v("It is difficult to predict all the scenarios, but at the very least it may help to limit the size of untrusted schemas (e.g. limit JSON string length) and also the maximum schema object depth (that can be high for relatively small JSON strings). You also may want to mitigate slow regular expressions in "),t("code",[e._v("pattern")]),e._v(" and "),t("code",[e._v("patternProperties")]),e._v(" keywords.")]),e._v(" "),t("p",[e._v("Regardless the measures you take, using untrusted schemas increases security risks.")]),e._v(" "),t("h2",{attrs:{id:"circular-references-in-javascript-objects"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#circular-references-in-javascript-objects"}},[e._v("#")]),e._v(" Circular references in JavaScript objects")]),e._v(" "),t("p",[e._v("Ajv does not support schemas and validated data that have circular references in objects. See "),t("a",{attrs:{href:"https://github.com/ajv-validator/ajv/issues/802",target:"_blank",rel:"noopener noreferrer"}},[e._v("issue #802"),t("OutboundLink")],1),e._v(".")]),e._v(" "),t("p",[e._v("An attempt to compile such schemas or validate such data would cause stack overflow (or will not complete in case of asynchronous validation). Depending on the parser you use, untrusted data can lead to circular references.")]),e._v(" "),t("h2",{attrs:{id:"security-risks-of-trusted-schemas"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#security-risks-of-trusted-schemas"}},[e._v("#")]),e._v(" Security risks of trusted schemas")]),e._v(" "),t("p",[e._v("Some keywords in JSON Schemas can lead to very slow validation for certain data. These keywords include (but may be not limited to):")]),e._v(" "),t("ul",[t("li",[t("code",[e._v("pattern")]),e._v(" and "),t("code",[e._v("format")]),e._v(" for large strings - in some cases using "),t("code",[e._v("maxLength")]),e._v(" can help mitigate it, but certain regular expressions can lead to exponential validation time even with relatively short strings (see "),t("a",{attrs:{href:"#redos-attack"}},[e._v("ReDoS attack")]),e._v(").")]),e._v(" "),t("li",[t("code",[e._v("patternProperties")]),e._v(" for large property names - use "),t("code",[e._v("propertyNames")]),e._v(" to mitigate, but some regular expressions can have exponential evaluation time as well.")]),e._v(" "),t("li",[t("code",[e._v("uniqueItems")]),e._v(" for large non-scalar arrays - use "),t("code",[e._v("maxItems")]),e._v(" to mitigate")])]),e._v(" "),t("div",{staticClass:"custom-block danger"},[t("p",{staticClass:"custom-block-title"},[e._v("Do NOT use allErrors in production")]),e._v(" "),t("p",[e._v("The 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"),t("a",{attrs:{href:"https://github.com/substack/safe-regex",target:"_blank",rel:"noopener noreferrer"}},[e._v("safe-regex"),t("OutboundLink")],1),e._v(", for example.")]),e._v(" "),t("p",[e._v("By default, Ajv uses the regex engine built into Node.js. This engine has exponential worst-case performance. This performance (and ReDoS attacks) can be mitigated by using a linear-time regex engine. Ajv supports the use of a third-party regex engine for this purpose.")]),e._v(" "),t("p",[e._v("To use a third-party regex engine in Ajv, set the ajv.opts.code.regExp property to that regex engine during instantiation. 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exports",slug:"cjs-vs-esm-exports"},{level:2,title:"Other JavaScript environments",slug:"other-javascript-environments"},{level:2,title:"Command line interface",slug:"command-line-interface"}]},{title:"Getting started",frontmatter:{},regularPath:"/guide/getting-started.html",relativePath:"guide/getting-started.md",key:"v-464fd629",path:"/guide/getting-started.html",headers:[{level:2,title:"Install",slug:"install"},{level:2,title:"Basic data validation",slug:"basic-data-validation"},{level:2,title:"Parsing and serializing JSON",slug:"parsing-and-serializing-json"}]},{title:"Choosing schema language",frontmatter:{tags:["JTD"]},regularPath:"/guide/schema-language.html",relativePath:"guide/schema-language.md",key:"v-76cafeae",path:"/guide/schema-language.html",headers:[{level:2,title:"JSON Type Definition",slug:"json-type-definition"},{level:2,title:"JSON Schema",slug:"json-schema"},{level:3,title:"draft-04",slug:"draft-04"},{level:3,title:"draft-07 (and draft-06)",slug:"draft-07-and-draft-06"},{level:3,title:"draft 2019-09 (and draft-2020-12)",slug:"draft-2019-09-and-draft-2020-12"},{level:2,title:"Comparison",slug:"comparison"},{level:3,title:"JSON Schema",slug:"json-schema-2"},{level:3,title:"JSON Type Definition",slug:"json-type-definition-2"}]},{title:"Managing schemas",frontmatter:{},regularPath:"/guide/managing-schemas.html",relativePath:"guide/managing-schemas.md",key:"v-7cca31fe",path:"/guide/managing-schemas.html",headers:[{level:2,title:"Re-using validation functions",slug:"re-using-validation-functions"},{level:2,title:"Standalone validation code",slug:"standalone-validation-code"},{level:2,title:"Compiling during initialization",slug:"compiling-during-initialization"},{level:2,title:"Using Ajv instance cache",slug:"using-ajv-instance-cache"},{level:3,title:"Cache key: schema vs key vs $id",slug:"cache-key-schema-vs-key-vs-id"},{level:3,title:"Pre-adding all schemas vs adding on demand",slug:"pre-adding-all-schemas-vs-adding-on-demand"},{level:3,title:"Asynchronous schema loading",slug:"asynchronous-schema-loading"},{level:2,title:"Caching schemas in your code",slug:"caching-schemas-in-your-code"}]},{title:"Using with TypeScript",frontmatter:{},regularPath:"/guide/typescript.html",relativePath:"guide/typescript.md",key:"v-f3391bf6",path:"/guide/typescript.html",headers:[{level:2,title:"Additional functionality",slug:"additional-functionality"},{level:2,title:"Utility types for schemas",slug:"utility-types-for-schemas"},{level:2,title:"Utility type for JTD data type",slug:"utility-type-for-jtd-data-type"},{level:2,title:"Type-safe error handling",slug:"type-safe-error-handling"},{level:2,title:"Type-safe parsers and serializers",slug:"type-safe-parsers-and-serializers"},{level:2,title:"Type-safe unions",slug:"type-safe-unions"}]},{title:"Modifying data during validation",frontmatter:{},regularPath:"/guide/modifying-data.html",relativePath:"guide/modifying-data.md",key:"v-b5351e9e",path:"/guide/modifying-data.html",headers:[{level:2,title:"General considerations",slug:"general-considerations"},{level:2,title:"Removing additional properties",slug:"removing-additional-properties"},{level:2,title:"Assigning defaults",slug:"assigning-defaults"},{level:2,title:"Coercing data types",slug:"coercing-data-types"}]},{title:"User-defined keywords",frontmatter:{},regularPath:"/guide/user-keywords.html",relativePath:"guide/user-keywords.md",key:"v-62aa1369",path:"/guide/user-keywords.html"},{title:"JSON Schema",frontmatter:{},regularPath:"/json-schema.html",relativePath:"json-schema.md",key:"v-5e92fa09",path:"/json-schema.html",headers:[{level:2,title:"JSON Schema 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minProperties",slug:"maxproperties-minproperties"},{level:3,title:"required",slug:"required"},{level:3,title:"properties",slug:"properties"},{level:3,title:"patternProperties",slug:"patternproperties"},{level:3,title:"additionalProperties",slug:"additionalproperties"},{level:3,title:"dependencies",slug:"dependencies"},{level:3,title:"dependentRequired",slug:"dependentrequired"},{level:3,title:"dependentSchemas",slug:"dependentschemas"},{level:3,title:"propertyNames",slug:"propertynames"},{level:3,title:"unevaluatedProperties",slug:"unevaluatedproperties"},{level:3,title:"discriminator",slug:"discriminator"},{level:2,title:"Keywords for all types",slug:"keywords-for-all-types"},{level:3,title:"enum",slug:"enum"},{level:3,title:"const",slug:"const"},{level:2,title:"Compound keywords",slug:"compound-keywords"},{level:3,title:"not",slug:"not"},{level:3,title:"oneOf",slug:"oneof"},{level:3,title:"anyOf",slug:"anyof"},{level:3,title:"allOf",slug:"allof"},{level:3,title:"if/then/else",slug:"if-then-else"},{level:2,title:"Metadata keywords",slug:"metadata-keywords"}]},{title:"Why use AJV",frontmatter:{},regularPath:"/guide/why-ajv.html",relativePath:"guide/why-ajv.md",key:"v-3ad539ae",path:"/guide/why-ajv.html",headers:[{level:2,title:"Write less code",slug:"write-less-code"},{level:2,title:"Super fast & secure",slug:"super-fast-secure"},{level:2,title:"Multi-standard",slug:"multi-standard"}]},{title:"JSON Type Definition",frontmatter:{},regularPath:"/json-type-definition.html",relativePath:"json-type-definition.md",key:"v-8de1af1a",path:"/json-type-definition.html",headers:[{level:2,title:"JTD schema forms",slug:"jtd-schema-forms"},{level:3,title:"Type form",slug:"type-form"},{level:3,title:"Enum form",slug:"enum-form"},{level:3,title:"Elements form",slug:"elements-form"},{level:3,title:"Properties form",slug:"properties-form"},{level:3,title:"Discriminator form",slug:"discriminator-form"},{level:3,title:"Values form",slug:"values-form"},{level:3,title:"Ref form",slug:"ref-form"},{level:3,title:"Empty form",slug:"empty-form"},{level:2,title:"JTDSchemaType",slug:"jtdschematype"},{level:3,title:"Most Schemas",slug:"most-schemas"},{level:3,title:"Ref Schemas",slug:"ref-schemas"},{level:3,title:"Notable Omissions",slug:"notable-omissions"},{level:2,title:"Extending JTD",slug:"extending-jtd"},{level:3,title:"Metadata schema member",slug:"metadata-schema-member"},{level:3,title:"Union keyword",slug:"union-keyword"},{level:3,title:"User-defined keywords",slug:"user-defined-keywords"},{level:2,title:"Validation errors",slug:"validation-errors"}]},{title:"User defined keywords",frontmatter:{},regularPath:"/keywords.html",relativePath:"keywords.md",key:"v-48953121",path:"/keywords.html",headers:[{level:2,title:"Common attributes of keyword definitions",slug:"common-attributes-of-keyword-definitions"},{level:3,title:"Define keyword with code generation function",slug:"define-keyword-with-code-generation-function"},{level:3,title:'Define keyword with "validate" function',slug:"define-keyword-with-validate-function"},{level:3,title:'Define keyword with "compile" function',slug:"define-keyword-with-compile-function"},{level:3,title:'Define keyword with "macro" function',slug:"define-keyword-with-macro-function"},{level:2,title:"Schema compilation context",slug:"schema-compilation-context"},{level:2,title:"Validation time variables",slug:"validation-time-variables"},{level:2,title:"Reporting errors",slug:"reporting-errors"}]},{frontmatter:{},regularPath:"/license.html",relativePath:"license.md",key:"v-1f38ca2e",path:"/license.html"},{title:"Mozilla MOSS grant and OpenJS Foundation",frontmatter:{news:!0,title:"Mozilla MOSS grant and OpenJS Foundation",date:"2020-08-14T00:00:00.000Z"},regularPath:"/news/2020-08-14-mozilla-grant-openjs-foundation.html",relativePath:"news/2020-08-14-mozilla-grant-openjs-foundation.md",key:"v-1dfe032e",path:"/news/2020-08-14-mozilla-grant-openjs-foundation.html",excerpt:'

\n

Ajv has been awarded a grant from Mozilla’s Open Source Support (MOSS) program in the “Foundational Technology” track! It will sponsor the development of Ajv support of JSON Schema version 2019-09 and of JSON Type Definition (RFC8927).

\n

Ajv also joined OpenJS Foundation – having this support will help ensure the longevity and stability of Ajv for all its users.

\n'},{title:"Ajv version 8 is released!",frontmatter:{news:!0,title:"Ajv version 8 is released!",date:"2021-03-27T00:00:00.000Z"},regularPath:"/news/2021-03-27-ajv-version-8-released.html",relativePath:"news/2021-03-27-ajv-version-8-released.md",key:"v-c918a5fa",path:"/news/2021-03-27-ajv-version-8-released.html",excerpt:'

Ajv version 8 has these new features:

\n\n'},{title:"Ajv version 7 is released!",frontmatter:{news:!0,title:"Ajv version 7 is released!",date:"2020-12-15T00:00:00.000Z"},regularPath:"/news/2020-12-15-ajv-version-7-released.html",relativePath:"news/2020-12-15-ajv-version-7-released.md",key:"v-27531941",path:"/news/2020-12-15-ajv-version-7-released.html",excerpt:'

Ajv version 7 has these new features:

\n\n'},{title:"Ajv online event - May 20, 10am PT / 6pm UK",frontmatter:{news:!0,title:"Ajv online event - May 20, 10am PT / 6pm UK",date:"2021-04-24T00:00:00.000Z",more:!1},regularPath:"/news/2021-04-24-ajv-online-event.html",relativePath:"news/2021-04-24-ajv-online-event.md",key:"v-5a94ae89",path:"/news/2021-04-24-ajv-online-event.html",excerpt:'

We will talk about:

\n
    \n
  • new features of Ajv version 8.
    • \n
  • the improvements sponsored by Mozilla\'s MOSS grant.
    • \n
  • how Ajv is used in JavaScript applications.
    • \n
\n

Speakers:

\n
    \n
  • Evgeny Poberezkin, the creator of Ajv.
    • \n
  • Mehan Jayasuriya, Program Officer at Mozilla Foundation, leading the MOSS and other programs investing in the open source and community ecosystems.
    • \n
  • Matteo Collina, Technical Director at NearForm and Node.js Technical Steering Committee member, creator of Fastify web framework.
    • \n
  • Kin Lane, Chief Evangelist at Postman. Studying the tech, business & politics of APIs since 2010. Presidential Innovation Fellow during the Obama administration.
    • \n
  • Ulysse Carion, the creator of JSON Type Definition specification.
    • \n
\n

Gajus Kuizinas will host the event.

\n

Please register here.

\n'},{title:"Ajv supports JSON Type Definition",frontmatter:{news:!0,title:"Ajv supports JSON Type Definition",date:"2021-03-07T00:00:00.000Z"},regularPath:"/news/2021-03-07-ajv-supports-json-type-definition.html",relativePath:"news/2021-03-07-ajv-supports-json-type-definition.md",key:"v-67c77489",path:"/news/2021-03-07-ajv-supports-json-type-definition.html",excerpt:'

JSON Type Definition (JTD) is a new specification for defining JSON structures that is very simple to use, comparing with JSON Schema, less error prone, and it is published as RFC8927.

\n

See Choosing schema language for a detailed comparison between JSON Schema and JSON Type definition and informal specification.

\n'},{title:"Microsoft FOSS award",frontmatter:{news:!0,title:"Microsoft FOSS award",date:"2021-07-22T00:00:00.000Z",more:!1},regularPath:"/news/2021-07-22-ajv-microsoft-foss-fund-award.html",relativePath:"news/2021-07-22-ajv-microsoft-foss-fund-award.md",key:"v-959a2c2e",path:"/news/2021-07-22-ajv-microsoft-foss-fund-award.html",excerpt:'

Ajv was awarded a sponsorship from Microsoft FOSS fund - huge thanks to Microsoft and the engineers who voted to support Ajv development.

\n

This award will contribute to a long term maintenance of Ajv.

\n'},{title:"Ajv online event video uploaded",frontmatter:{news:!0,title:"Ajv online event video uploaded",date:"2021-05-24T00:00:00.000Z",more:!1},regularPath:"/news/2021-05-24-ajv-online-event-video.html",relativePath:"news/2021-05-24-ajv-online-event-video.md",key:"v-2abeb1ab",path:"/news/2021-05-24-ajv-online-event-video.html",excerpt:'

Huge thanks to everybody who joined, and to the speakers! The video of the event is available on YouTube.

\n'},{title:"Ajv options",frontmatter:{},regularPath:"/options.html",relativePath:"options.md",key:"v-7bf93309",path:"/options.html",headers:[{level:2,title:"Usage",slug:"usage"},{level:2,title:"Option defaults",slug:"option-defaults"},{level:2,title:"Strict mode options",slug:"strict-mode-options"},{level:3,title:"strict",slug:"strict"},{level:3,title:"strictSchema",slug:"strictschema"},{level:3,title:"strictNumbers",slug:"strictnumbers"},{level:3,title:"strictTypes",slug:"stricttypes"},{level:3,title:"strictTuples",slug:"stricttuples"},{level:3,title:"strictRequired",slug:"strictrequired"},{level:3,title:"allowUnionTypes",slug:"allowuniontypes"},{level:3,title:"allowMatchingProperties",slug:"allowmatchingproperties"},{level:3,title:"validateFormats",slug:"validateformats"},{level:2,title:"Validation and reporting 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News",frontmatter:{newsIndex:!0,editLink:!1},regularPath:"/news/",relativePath:"news/README.md",key:"v-506a67bc",path:"/news/"},{frontmatter:{editLink:"https://github.com/ajv-validator/ajv-cli/edit/master/README.md"},regularPath:"/packages/ajv-cli.html",relativePath:"packages/ajv-cli.md",key:"v-19f2c039",path:"/packages/ajv-cli.html",headers:[{level:2,title:"Contents",slug:"contents"},{level:2,title:"Installation",slug:"installation"},{level:2,title:"JSON schema language and version",slug:"json-schema-language-and-version"},{level:2,title:"Commands",slug:"commands"},{level:3,title:"Help command",slug:"help-command"},{level:3,title:"Validate data",slug:"validate-data"},{level:3,title:"Compile schemas",slug:"compile-schemas"},{level:3,title:"Migrate schemas",slug:"migrate-schemas"},{level:3,title:"Test validation result",slug:"test-validation-result"},{level:2,title:"Ajv options",slug:"ajv-options"},{level:2,title:"Version 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Ajv JSON schema validator
- + diff --git a/codegen.html b/codegen.html index 72daf1123..963565790 100644 --- a/codegen.html +++ b/codegen.html @@ -18,8 +18,8 @@ - - + +
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- + diff --git a/faq.html b/faq.html index d71038129..41526c758 100644 --- a/faq.html +++ b/faq.html @@ -18,8 +18,8 @@ - - + +
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- + diff --git a/guide/async-validation.html b/guide/async-validation.html index b73f32852..582de4d34 100644 --- a/guide/async-validation.html +++ b/guide/async-validation.html @@ -18,8 +18,8 @@ - - + +
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Ajv JSON schema validator
- + diff --git a/guide/environments.html b/guide/environments.html index 19f0360b8..3e8323c4e 100644 --- a/guide/environments.html +++ b/guide/environments.html @@ -18,8 +18,8 @@ - - + +
Ajv JSON schema validator
- + diff --git a/guide/formats.html b/guide/formats.html index 4255169f4..cbe777066 100644 --- a/guide/formats.html +++ b/guide/formats.html @@ -18,8 +18,8 @@ - - + +
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Ajv JSON schema validator
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Ajv JSON schema validator
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Ajv JSON schema validator
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Ajv JSON schema validator
- + diff --git a/keywords.html b/keywords.html index e9deb6c60..2eca779e1 100644 --- a/keywords.html +++ b/keywords.html @@ -18,8 +18,8 @@ - - + +
Ajv JSON schema validator
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Ajv JSON schema validator
- + diff --git a/news/2020-08-14-mozilla-grant-openjs-foundation.html b/news/2020-08-14-mozilla-grant-openjs-foundation.html index 337dc14f4..3c87f829a 100644 --- a/news/2020-08-14-mozilla-grant-openjs-foundation.html +++ b/news/2020-08-14-mozilla-grant-openjs-foundation.html @@ -18,8 +18,8 @@ - - + +
Ajv JSON schema validator

Mozilla MOSS grant and OpenJS Foundation

(opens new window) (opens new window)

Ajv has been awarded a grant from Mozilla’s Open Source Support (MOSS) program (opens new window) in the “Foundational Technology” track! It will sponsor the development of Ajv support of JSON Schema version 2019-09 (opens new window) and of JSON Type Definition (RFC8927) (opens new window).

Ajv also joined OpenJS Foundation (opens new window) – having this support will help ensure the longevity and stability of Ajv for all its users.

This blog post (opens new window) has more details.

I am looking for the long term maintainers of Ajv – working with ReadySet (opens new window), also sponsored by Mozilla, to establish clear guidelines for the role of a "maintainer" and the contribution standards, and to encourage a wider, more inclusive, contribution from the community.

- + diff --git a/news/2020-12-15-ajv-version-7-released.html b/news/2020-12-15-ajv-version-7-released.html index d55fd536c..2673b5b2e 100644 --- a/news/2020-12-15-ajv-version-7-released.html +++ b/news/2020-12-15-ajv-version-7-released.html @@ -18,8 +18,8 @@ - - + +
Ajv JSON schema validator

Ajv version 7 has these new features:

Please note:

  • the support for JSON-Schema draft-04 is removed - if you have schemas using "id" attributes you have to replace them with "$id" (or continue using Ajv v6 (opens new window) that will be supported until 02/28/2021).
  • all formats are separated to ajv-formats package - they have to be explicitly added if you use them.

See release notes (opens new window) for the details.

To install the new version:

npm install ajv

See Getting started for code examples.

- + diff --git a/news/2021-03-07-ajv-supports-json-type-definition.html b/news/2021-03-07-ajv-supports-json-type-definition.html index ea88e6361..185be7a75 100644 --- a/news/2021-03-07-ajv-supports-json-type-definition.html +++ b/news/2021-03-07-ajv-supports-json-type-definition.html @@ -18,8 +18,8 @@ - - + +
Ajv JSON schema validator

Ajv supports JSON Type Definition

JSON Type Definition (JTD) is a new specification for defining JSON structures that is very simple to use, comparing with JSON Schema, less error prone, and it is published as RFC8927 (opens new window).

See Choosing schema language for a detailed comparison between JSON Schema and JSON Type definition and informal specification.

In addition to validation, Ajv also supports:

  • generation of serializers and parsers from JTD schemas/ This is more efficient than native JSON serialization/parsing - you can combine JSON string parsing and validation in one function call.
  • utility type JTDSchemaType to convert your data type to the type of JTD schema and JTDDataType to convert the type of schema to the type of data.
- + diff --git a/news/2021-03-27-ajv-version-8-released.html b/news/2021-03-27-ajv-version-8-released.html index f588eef7d..11ee8472f 100644 --- a/news/2021-03-27-ajv-version-8-released.html +++ b/news/2021-03-27-ajv-version-8-released.html @@ -18,8 +18,8 @@ - - + +
Ajv JSON schema validator

Ajv version 8 has these new features:

See release notes (opens new window) for the details.

To install the new version:

npm install ajv

See Getting started for code examples.

- + diff --git a/news/2021-04-24-ajv-online-event.html b/news/2021-04-24-ajv-online-event.html index 05e7401ca..77a9ecaea 100644 --- a/news/2021-04-24-ajv-online-event.html +++ b/news/2021-04-24-ajv-online-event.html @@ -18,8 +18,8 @@ - - + +
Ajv JSON schema validator

Ajv online event - May 20, 10am PT / 6pm UK

We will talk about:

  • new features of Ajv version 8.
  • the improvements sponsored by Mozilla's MOSS grant.
  • how Ajv is used in JavaScript applications.

Speakers:

Gajus Kuizinas (opens new window) will host the event.

Please register here (opens new window).

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Ajv JSON schema validator

Microsoft FOSS award

Ajv was awarded a sponsorship from Microsoft FOSS fund (opens new window) - huge thanks to Microsoft and the engineers who voted to support Ajv development.

This award will contribute to a long term maintenance of Ajv.

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