hono-openapi/toOpenAPISchema.js

OpenAPI schema generator for Hono

import{Walker as e}from"json-schema-walker";const t=["$ref","definitions","title","multipleOf","maximum","exclusiveMaximum","minimum","exclusiveMinimum","maxLength","minLength","pattern","maxItems","minItems","uniqueItems","maxProperties","minProperties","required","enum","type","not","allOf","oneOf","anyOf","items","properties","additionalProperties","description","format","default","nullable","discriminator","readOnly","writeOnly","example","externalDocs","deprecated","xml"];let n=class extends Error{constructor(e){super(e),this.name="InvalidTypeError",this.message=e}};const i="x-",r=async(t,n)=>{if("object"!=typeof t)return t;if(t.type){const i=new e;return await i.loadSchema({definitions:n.definitions||[],...t,$schema:n.$schema},{dereference:!0,cloneSchema:!0,dereferenceOptions:{dereference:{circular:"ignore"}}}),await i.walk(a,i.vocabularies.DRAFT_07),"definitions"in i.rootSchema&&(i.rootSchema.definitions=void 0),i.rootSchema}if(Array.isArray(t)){const e=t;if(e.includes("null")){const t=e.filter((e=>"null"!==e));return{type:1===t.length?t[0]:t,nullable:!0}}}return t},o=async(t,n)=>{const i=new e;await i.loadSchema(t,n),await i.walk(a,i.vocabularies.DRAFT_07);const o=i.rootSchema;if(o?.definitions)for(const e in o.definitions){const n=o.definitions[e];o.definitions[e]=await r(n,t)}return o};function a(e){let r=e;return r?(r=function(e){return"object"!=typeof e||(e.$schema=void 0,e.$id=void 0,"id"in e&&(e.id=void 0)),e}(r),r=function(e){if("object"!=typeof e)return e;if(void 0===e.type)return e;if(function(e){if("object"==typeof e&&!Array.isArray(e)){if(e&&"$ref"in e&&e.$ref)return;if(e&&"properties"in e&&e.properties)return}const t=Array.isArray(e)?e:[e];for(const e of t)if(e&&!s.has(e))throw new n(`Type "${e}" is not a valid type`)}(e.type),Array.isArray(e.type)){e.type.includes("null")&&(e.nullable=!0);const t=e.type.filter((e=>"null"!==e));0===t.length?e.type=void 0:1===t.length?e.type=t[0]:(e.type=void 0,e.anyOf=t.map((e=>({type:e}))))}else"null"===e.type&&(e.type=void 0,e.nullable=!0);return e}(r),r=function(e){void 0!==e.const&&(e.enum=[e.const],e.const=void 0);return e}(r),r=function(e){const t=e.dependencies;if("object"!=typeof t)return e;e.dependencies=void 0,Array.isArray(e.allOf)||(e.allOf=[]);for(const n in t){const i={oneOf:[{not:{required:[n]}},{required:[n,t[n]].flat()}]};e.allOf.push(i)}return e}(r),r=function(e){for(const t of["oneOf","anyOf"]){const n=e[t];if(!n)continue;if(!Array.isArray(n))return e;if(!n.some((e=>"null"===e.type)))return e;const i=n.filter((e=>"null"!==e.type));for(const e of i)e.nullable=!0;e[t]=i}return e}(r),r=function(e){if("object"!=typeof e)return e;"if"in e&&e.if&&e.then&&(e.oneOf=[{allOf:[e.if,e.then].filter(Boolean)},{allOf:[{not:e.if},e.else].filter(Boolean)}],e.if=void 0,e.then=void 0,e.else=void 0);return e}(r),r=function(e){"number"==typeof e.exclusiveMaximum&&(e.maximum=e.exclusiveMaximum,e.exclusiveMaximum=!0);"number"==typeof e.exclusiveMinimum&&(e.minimum=e.exclusiveMinimum,e.exclusiveMinimum=!0);return e}(r),r=function(e){e.examples&&Array.isArray(e.examples)&&(e.example=e.examples[0],e.examples=void 0);return e}(r),"object"==typeof r.patternProperties&&(r=function(e){return e["x-patternProperties"]=e.patternProperties,e.patternProperties=void 0,e.additionalProperties??=!0,e}(r)),"array"===r.type&&void 0===r.items&&(r.items={}),r=function(e){const n=Object.keys(e);for(const r of n)if(!r.startsWith(i)&&!t.includes(r)){e[`${i}${r}`]=e[r],e[r]=void 0}return e}(r),r):r}const s=new Set(["null","boolean","object","array","number","string","integer"]);export{o as c};