express-zod-api/dist/index.js

A Typescript framework to help you get an API server up and running with I/O schema validation and custom middlewares in minutes.

import{createRequire as e}from"node:module";import{getBrand as t}from"@express-zod-api/zod-plugin";import*as n from"ramda";import{globalRegistry as r,z as i}from"zod";import a,{isHttpError as o}from"http-errors";import s,{blue as c,cyanBright as l,gray as u,green as d,hex as f,italic as p,red as m,whiteBright as h}from"ansis";import{inspect as g}from"node:util";import{performance as _}from"node:perf_hooks";import v from"express";import y from"node:http";import ee from"node:https";import{setInterval as te}from"node:timers/promises";import{OpenApiBuilder as ne,isReferenceObject as re,isSchemaObject as b}from"openapi3-ts/oas31";import{createRequest as ie,createResponse as ae}from"node-mocks-http";function oe(e){return e}const x={json:`application/json`,upload:`multipart/form-data`,raw:`application/octet-stream`,sse:`text/event-stream`,form:`application/x-www-form-urlencoded`},se=[`get`,`post`,`put`,`delete`,`patch`],ce=[...se,`head`],S=e=>se.includes(e),le=i.object({}),ue=/:([A-Za-z0-9_]+)/g,de=e=>e.match(ue)?.map(e=>e.slice(1))||[],fe=e=>{let t=(e.header(`content-type`)||``).toLowerCase().startsWith(x.upload);return`files`in e&&t},pe={get:[`query`,`params`],post:[`body`,`params`,`files`],put:[`body`,`params`],patch:[`body`,`params`],delete:[`query`,`params`]},me=[`body`,`query`,`params`],he=e=>e.method.toLowerCase(),ge=(e,t={})=>{if(e===`options`)return[];let n=e===`head`?`get`:S(e)?e:void 0;return(n?t[n]||pe[n]:void 0)||me},_e=(e,t={})=>ge(he(e),t).filter(t=>t===`files`?fe(e):!0).reduce((t,n)=>Object.assign(t,e[n]),{}),C=e=>e instanceof Error?e:e instanceof i.ZodError?new i.ZodRealError(e.issues):Error(String(e)),w=e=>e instanceof i.ZodError?e.issues.map(({path:e,message:t})=>`${e.length?`${i.core.toDotPath(e)}: `:``}${t}`).join(`; `):e.message,T=(e,t)=>O(e)&&`_zod`in e&&(t?n.path([`_zod`,`def`,`type`],e)===t:!0),E=(e,t,r)=>e.length&&t.length?n.xprod(e,t).map(r):e.concat(t),ve=e=>e.charAt(0).toUpperCase()+e.slice(1).toLowerCase(),D=(...e)=>{let t=n.chain(e=>e.split(/[^A-Z0-9]/gi),e);return n.chain(e=>e.replaceAll(/[A-Z]+/g,e=>`/${e}`).split(`/`),t).map(ve).join(``)},ye=n.tryCatch((e,t)=>typeof i.parse(e,t),n.always(void 0)),O=e=>typeof e==`object`&&!!e,be=n.memoizeWith(()=>`static`,()=>process.env.NODE_ENV===`production`),xe=(e,t)=>!!t&&e!==`head`,k=Symbol(`Buffer`),Se=()=>i.custom(e=>Buffer.isBuffer(e),{error:`Expected Buffer`}).brand(k),A=Symbol(`DateIn`),Ce=({examples:e,...t}={})=>i.union([i.iso.date(),i.iso.datetime(),i.iso.datetime({local:!0})]).meta({examples:e}).transform(e=>new Date(e)).pipe(i.date()).brand(A).meta(t),j=Symbol(`DateOut`),we=(e={})=>i.date().transform(e=>e.toISOString()).brand(j).meta(e);var M=class extends Error{name=`RoutingError`;cause;constructor(e,t,n){super(e),this.cause={method:t,path:n}}},N=class extends Error{name=`DocumentationError`;cause;constructor(e,{method:t,path:n,isResponse:r}){super(e),this.cause=`${r?`Response`:`Input`} schema of an Endpoint assigned to ${t.toUpperCase()} method of ${n} path.`}},Te=class extends Error{name=`IOSchemaError`},Ee=class extends Te{name=`DeepCheckError`;constructor(e){super(`Found`,{cause:e}),this.cause=e}},De=class extends Te{name=`OutputValidationError`;constructor(e){let t=new i.ZodError(e.issues.map(({path:e,...t})=>({...t,path:[`output`,...e]})));super(w(t),{cause:e}),this.cause=e}},P=class extends Te{name=`InputValidationError`;constructor(e){super(w(e),{cause:e}),this.cause=e}},Oe=class extends Error{name=`ResultHandlerError`;constructor(e,t){super(w(e),{cause:e}),this.cause=e,this.handled=t}},ke=class extends Error{name=`MissingPeerError`;constructor(e){super(`Missing peer dependency: ${e}. Please install it to use the feature.`)}};const Ae=Symbol(`Form`),je=e=>(e instanceof i.ZodObject?e:i.object(e)).brand(Ae),F=Symbol(`Upload`),Me=()=>i.custom(e=>typeof e==`object`&&!!e&&`name`in e&&`encoding`in e&&`mimetype`in e&&`data`in e&&`tempFilePath`in e&&`truncated`in e&&`size`in e&&`md5`in e&&`mv`in e&&typeof e.name==`string`&&typeof e.encoding==`string`&&typeof e.mimetype==`string`&&Buffer.isBuffer(e.data)&&typeof e.tempFilePath==`string`&&typeof e.truncated==`boolean`&&typeof e.size==`number`&&typeof e.md5==`string`&&typeof e.mv==`function`,{error:({input:e})=>({message:`Expected file upload, received ${typeof e}`})}).brand(F),I=Symbol(`Raw`),Ne=i.object({raw:Se()}),Pe=e=>Ne.extend(e).brand(I);function Fe(e){return e?Pe(e):Ne.brand(I)}const Ie=(e,{io:t,condition:r})=>n.tryCatch(()=>void i.toJSONSchema(e,{io:t,unrepresentable:`any`,override:({zodSchema:e})=>{if(r(e))throw new Ee(e)}}),e=>e.cause)(),Le=(e,{io:t})=>{let r=[i.toJSONSchema(e,{io:t,unrepresentable:`any`})];for(;r.length;){let e=r.shift();if(n.is(Object,e)){if(e.$ref===`#`)return!0;r.push(...n.values(e))}n.is(Array,e)&&r.push(...n.values(e))}return!1},Re=e=>Ie(e,{condition:e=>{let n=t(e);return typeof n==`symbol`&&[F,I,Ae].includes(n)},io:`input`}),ze=[`nan`,`symbol`,`map`,`set`,`bigint`,`void`,`promise`,`never`,`function`],Be=(e,n)=>Ie(e,{io:n,condition:e=>{let r=t(e),{type:i}=e._zod.def;return!!(ze.includes(i)||r===k||n===`input`&&(i===`date`||r===j)||n===`output`&&(r===A||r===I||r===F))}}),Ve=(e,{variant:t,args:n,...r})=>{if(typeof e==`function`&&(e=e(...n)),e instanceof i.ZodType)return[{schema:e,...r}];if(Array.isArray(e)&&!e.length)throw new Oe(Error(`At least one ${t} response schema required.`));return(Array.isArray(e)?e:[e]).map(({schema:e,statusCode:t,mimeType:n})=>({schema:e,statusCodes:typeof t==`number`?[t]:t||r.statusCodes,mimeTypes:typeof n==`string`?[n]:n===void 0?r.mimeTypes:n}))},He=(e,t,{url:n},r)=>!e.expose&&t.error(`Server side error`,{error:e,url:n,payload:r}),L=e=>o(e)?e:a(e instanceof P?400:500,w(e),{cause:e.cause||e}),R=e=>be()&&!e.expose?a(e.statusCode).message:e.message,Ue=e=>Object.entries(e._zod.def.shape).reduce((e,[t,i])=>{let{examples:a=[]}=r.get(i)||{};return E(e,a.map(n.objOf(t)),([e,t])=>({...e,...t}))},[]),We=({error:e,logger:t,response:n})=>{t.error(`Result handler failure`,e);let r=R(a(500,`An error occurred while serving the result: ${e.message}.`+(e.handled?`\nOriginal error: ${e.handled.message}.`:``),{expose:o(e.cause)?e.cause.expose:!1}));n.status(500).type(`text/plain`).end(r)};var Ge=class{},z=class extends Ge{#e;#t;#n;constructor({input:e,security:t,handler:n}){super(),this.#e=e,this.#t=t,this.#n=n}get security(){return this.#t}get schema(){return this.#e}async execute({input:e,...t}){try{let n=await(this.#e||le).parseAsync(e);return this.#n({...t,input:n})}catch(e){throw e instanceof i.ZodError?new P(e):e}}},Ke=class extends z{constructor(e,{provider:t=()=>({}),transformer:n=e=>e}={}){super({handler:async({request:r,response:i})=>new Promise((a,o)=>{let s=e=>{if(e&&e instanceof Error)return o(n(e));a(t(r,i))};e(r,i,s)?.catch(s)})})}},B=class{nest(e){return{...e,"":this}}},qe=class e extends B{#e;#t=n.once(()=>{if(r.get(this.#e.outputSchema)?.examples?.length||!T(this.#e.outputSchema,`object`))return;let e=Ue(this.#e.outputSchema);if(!e.length)return;let t=this.#e.outputSchema.meta();r.remove(this.#e.outputSchema).add(this.#e.outputSchema,{...t,examples:e})});constructor(e){super(),this.#e=e}#n(t){return new e({...this.#e,...t})}deprecated(){return this.#n({deprecated:!0})}get isDeprecated(){return this.#e.deprecated||!1}get description(){return this.#e.description}get shortDescription(){return this.#e.shortDescription}get methods(){return Object.freeze(this.#e.methods)}get inputSchema(){return this.#e.inputSchema}get outputSchema(){return this.#t(),this.#e.outputSchema}get requestType(){let e=Re(this.#e.inputSchema);if(e){let n=t(e);if(n===F)return`upload`;if(n===I)return`raw`;if(n===Ae)return`form`}return`json`}getResponses(e){return e===`positive`&&this.#t(),Object.freeze(e===`negative`?this.#e.resultHandler.getNegativeResponse():this.#e.resultHandler.getPositiveResponse(this.#e.outputSchema))}get security(){let e=n.pluck(`security`,this.#e.middlewares||[]);return n.reject(n.isNil,e)}get scopes(){return Object.freeze(this.#e.scopes||[])}get tags(){return Object.freeze(this.#e.tags||[])}getOperationId(e){return this.#e.getOperationId?.(e)}async#r(e){try{return await this.#e.outputSchema.parseAsync(e)}catch(e){throw e instanceof i.ZodError?new De(e):e}}async#i({method:e,logger:t,ctx:n,response:r,...i}){for(let a of this.#e.middlewares||[])if(!(e===`options`&&!(a instanceof Ke))&&(Object.assign(n,await a.execute({...i,ctx:n,response:r,logger:t})),r.writableEnded)){t.warn(`A middleware has closed the stream. 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this.addSecurityScheme(t,e),t}),b={operationId:_,summary:h,description:c,deprecated:i.isDeprecated||void 0,tags:X(i.tags),parameters:X(ee),requestBody:ne,security:X(re),responses:te};this.addPath(rn(r),{[e]:b})};Ct({routing:e,config:t,onEndpoint:d?gt(p):p}),c&&(this.rootDoc.tags=In(c))}};const zn=e=>ie({...e,headers:{"content-type":x.json,...e?.headers}}),Bn=e=>ae(e),Vn=e=>{let t={warn:[],error:[],info:[],debug:[]};return new Proxy(e||{},{get(e,n,r){return n===`_getLogs`?()=>t:it(n)?(...e)=>t[n].push(e):Reflect.get(e,n,r)}})},Hn=({requestProps:e,responseOptions:t,configProps:n,loggerProps:r})=>{let i=zn(e),a=Bn({req:i,...t});a.req=t?.req||i,i.res=a;let o=Vn(r);return{requestMock:i,responseMock:a,loggerMock:o,configMock:{cors:!1,logger:o,...n}}},Un=async({endpoint:e,...t})=>{let{requestMock:n,responseMock:r,loggerMock:i,configMock:a}=Hn(t);return await e.execute({request:n,response:r,config:a,logger:i}),{requestMock:n,responseMock:r,loggerMock:i}},Wn=async({middleware:e,ctx:t={},...n})=>{let{requestMock:r,responseMock:i,loggerMock:a,configMock:{inputSources:o,errorHandler:s=W}}=Hn(n),c={request:r,response:i,logger:a,input:_e(r,o),ctx:t};try{return{requestMock:r,responseMock:i,loggerMock:a,output:await e.execute(c)}}catch(e){return await s.execute({...c,error:C(e),output:null}),{requestMock:r,responseMock:i,loggerMock:a,output:{}}}};var Gn=class t{ts;f;exportModifier;asyncModifier;accessModifiers;#e;static#t=/^[A-Za-z_$][A-Za-z0-9_$]*$/;constructor(){this.ts=e(import.meta.url)(`typescript`),this.f=this.ts.factory,this.exportModifier=[this.f.createModifier(this.ts.SyntaxKind.ExportKeyword)],this.asyncModifier=[this.f.createModifier(this.ts.SyntaxKind.AsyncKeyword)],this.accessModifiers={public:[this.f.createModifier(this.ts.SyntaxKind.PublicKeyword)],protectedReadonly:[this.f.createModifier(this.ts.SyntaxKind.ProtectedKeyword),this.f.createModifier(this.ts.SyntaxKind.ReadonlyKeyword)]},this.#e=[this.ts.SyntaxKind.AnyKeyword,this.ts.SyntaxKind.BigIntKeyword,this.ts.SyntaxKind.BooleanKeyword,this.ts.SyntaxKind.NeverKeyword,this.ts.SyntaxKind.NumberKeyword,this.ts.SyntaxKind.ObjectKeyword,this.ts.SyntaxKind.StringKeyword,this.ts.SyntaxKind.SymbolKeyword,this.ts.SyntaxKind.UndefinedKeyword,this.ts.SyntaxKind.UnknownKeyword,this.ts.SyntaxKind.VoidKeyword]}addJsDoc=(e,t)=>this.ts.addSyntheticLeadingComment(e,this.ts.SyntaxKind.MultiLineCommentTrivia,`* 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