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{globalRegistry as e,z as t}from"zod";import*as n from"ramda";import r,{isHttpError as i}from"http-errors";import{isPromise as a}from"node:util/types";import o,{blue as s,cyanBright as c,gray as l,green as u,hex as d,italic as f,red as p,whiteBright as m}from"ansis";import{inspect as h}from"node:util";import{performance as g}from"node:perf_hooks";import _ from"express";import ee from"node:http";import te from"node:https";import{setInterval as ne}from"node:timers/promises";import{OpenApiBuilder as re,isReferenceObject as ie,isSchemaObject as v}from"openapi3-ts/oas31";import{createRequest as ae,createResponse as oe}from"node-mocks-http";function se(e){return e}const y={json:`application/json`,upload:`multipart/form-data`,raw:`application/octet-stream`,sse:`text/event-stream`,form:`application/x-www-form-urlencoded`},ce=[`get`,`post`,`put`,`delete`,`patch`],le=[...ce,`head`],b=e=>ce.includes(e),ue=t.object({}),de=/:([A-Za-z0-9_]+)/g,fe=e=>e.match(de)?.map(e=>e.slice(1))||[],pe=e=>{let t=(e.header(`content-type`)||``).toLowerCase().startsWith(y.upload);return`files`in e&&t},me={get:[`query`,`params`],post:[`body`,`params`,`files`],put:[`body`,`params`],patch:[`body`,`params`],delete:[`query`,`params`]},he=[`body`,`query`,`params`],ge=e=>e.method.toLowerCase(),_e=(e,t={})=>{if(e===`options`)return[];let n=e===`head`?`get`:b(e)?e:void 0;return(n?t[n]||me[n]:void 0)||he},ve=(e,t={})=>_e(ge(e),t).filter(t=>t===`files`?pe(e):!0).reduce((t,n)=>Object.assign(t,e[n]),{}),x=e=>e instanceof Error?e:e instanceof t.ZodError?new t.ZodRealError(e.issues):Error(String(e)),S=e=>e instanceof t.ZodError?e.issues.map(({path:e,message:n})=>`${e.length?`${t.core.toDotPath(e)}: `:``}${n}`).join(`; `):e.message,C=(e,t)=>E(e)&&`_zod`in e&&(t?n.path([`_zod`,`def`,`type`],e)===t:!0),w=(e,t,r)=>e.length&&t.length?n.xprod(e,t).map(r):e.concat(t),ye=e=>e.charAt(0).toUpperCase()+e.slice(1).toLowerCase(),T=(...e)=>{let t=n.chain(e=>e.split(/[^A-Z0-9]/gi),e);return n.chain(e=>e.replaceAll(/[A-Z]+/g,e=>`/${e}`).split(`/`),t).map(ye).join(``)},be=n.tryCatch((e,n)=>typeof t.parse(e,n),n.always(void 0)),E=e=>typeof e==`object`&&!!e,xe=n.memoizeWith(()=>`static`,()=>process.env.NODE_ENV===`production`),Se=(e,t)=>!!t&&e!==`head`,D=`x-brand`,O=t=>{let{[D]:n}=e.get(t)||{};if(typeof n==`symbol`||typeof n==`string`||typeof n==`number`)return n},k=t=>{let{examples:n}=e.get(t)||{};return Array.isArray(n)?n:[]},A=Symbol(`Buffer`),Ce=()=>t.custom(e=>Buffer.isBuffer(e),{error:`Expected Buffer`}).meta({[D]:A}),j=Symbol(`DateIn`),we=({examples:e,...n}={})=>t.union([t.iso.date(),t.iso.datetime(),t.iso.datetime({local:!0})]).meta({examples:e}).transform(e=>new Date(e)).pipe(t.date()).meta({...n,[D]:j}),M=Symbol(`DateOut`),Te=(e={})=>t.date().transform(e=>e.toISOString()).meta({...e,[D]:M});var N=class extends Error{name=`RoutingError`;cause;constructor(e,t,n){super(e),this.cause={method:t,path:n}}},P=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.`}},Ee=class extends Error{name=`IOSchemaError`},De=class extends Ee{cause;name=`DeepCheckError`;constructor(e){super(`Found`,{cause:e}),this.cause=e}},Oe=class extends Ee{cause;name=`OutputValidationError`;constructor(e){let n=new t.ZodError(e.issues.map(({path:e,...t})=>({...t,path:[`output`,...e]})));super(S(n),{cause:e}),this.cause=e}},F=class extends Ee{cause;name=`InputValidationError`;constructor(e){super(S(e),{cause:e}),this.cause=e}},I=class extends Error{cause;handled;name=`ResultHandlerError`;constructor(e,t){super(S(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 t.ZodObject?e:t.object(e)).meta({[D]:Ae}),L=Symbol(`Upload`),Me=e=>E(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,Ne=()=>t.custom(e=>Me(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 ${typeof e}`})}).meta({[D]:L}),R=Symbol(`Raw`),Pe=t.object({raw:Ce()}),Fe=e=>Pe.extend(e).meta({[D]:R});function Ie(e){return e?Fe(e):Pe.meta({[D]:R})}const Le=(e,{io:r,condition:i})=>n.tryCatch(()=>void t.toJSONSchema(e,{io:r,unrepresentable:`any`,override:({zodSchema:e})=>{if(i(e))throw new De(e)}}),e=>e.cause)(),Re=(e,{io:r})=>{let i=[t.toJSONSchema(e,{io:r,unrepresentable:`any`})];for(let e=0;e<i.length;e++){let t=i[e];if(n.is(Object,t)){if(t.$ref===`#`)return!0;i.push(...n.values(t))}n.is(Array,t)&&i.push(...n.values(t))}return!1},ze=e=>Le(e,{condition:e=>{let t=O(e);return typeof t==`symbol`&&[L,R,Ae].includes(t)},io:`input`}),Be=[`nan`,`symbol`,`map`,`set`,`bigint`,`void`,`promise`,`never`,`function`],Ve=(e,t)=>Le(e,{io:t,condition:e=>{let n=O(e),{type:r}=e._zod.def;return!!(Be.includes(r)||n===A||t===`input`&&(r===`date`||n===M)||t===`output`&&(n===j||n===R||n===L))}}),He=(e,{variant:n,args:r,...i})=>{if(typeof e==`function`&&(e=e(...r)),e instanceof t.ZodType)return[{schema:e,...i}];if(Array.isArray(e)&&!e.length)throw new I(Error(`At least one ${n} response schema required.`));return(Array.isArray(e)?e:[e]).map(({schema:e,statusCode:t,mimeType:n})=>({schema:e,statusCodes:typeof t==`number`?[t]:t||i.statusCodes,mimeTypes:typeof n==`string`?[n]:n===void 0?i.mimeTypes:n}))},Ue=(e,t,{url:n},r)=>!e.expose&&t.error(`Server side error`,{error:e,url:n,payload:r}),z=e=>i(e)?e:r(e instanceof F?400:500,S(e),{cause:e.cause||e}),B=e=>xe()&&!e.expose?r(e.statusCode).message:e.message,We=e=>Object.entries(e._zod.def.shape).reduce((e,[t,r])=>w(e,k(r).map(n.objOf(t)),([e,t])=>({...e,...t})),[]),Ge=({error:e,logger:t,response:n})=>{t.error(`Result handler failure`,e);let a=B(r(500,`An error occurred while serving the result: ${e.message}.`+(e.handled?`\nOriginal error: ${e.handled.message}.`:``),{expose:i(e.cause)?e.cause.expose:!1}));n.status(500).type(`text/plain`).end(a)};var Ke=class{},V=class extends Ke{#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,...n}){try{let t=await(this.#e||ue).parseAsync(e);return this.#n({...n,input:t})}catch(e){throw e instanceof t.ZodError?new F(e):e}}},qe=class extends V{constructor(e,{provider:t=()=>({}),transformer:n=e=>e}={}){super({handler:async({request:r,response:i})=>{let{promise:o,resolve:s,reject:c}=Promise.withResolvers(),l=e=>{if(e&&e instanceof Error)return c(n(e));s(t(r,i))},u=e(r,i,l);return a(u)&&u.catch(l),o}})}},Je=class{nest(e){return{...e,"":this}}},Ye=class r extends Je{#e;#t=n.once(()=>{if(k(this.#e.outputSchema).length||!C(this.#e.outputSchema,`object`))return;let t=We(this.#e.outputSchema);if(!t.length)return;let n=this.#e.outputSchema.meta();e.remove(this.#e.outputSchema).add(this.#e.outputSchema,{...n,examples:t})});constructor(e){super(),this.#e=e}#n(e){return new r({...this.#e,...e})}deprecated(){return this.#n({deprecated:!0})}get isDeprecated(){return this.#e.deprecated||!1}get description(){return this.#e.description}get summary(){return this.#e.summary}get methods(){return Object.freeze(this.#e.methods)}get inputSchema(){return this.#e.inputSchema}get outputSchema(){return this.#e.outputSchema}get requestType(){let e=ze(this.#e.inputSchema);if(e){let t=O(e);if(t===L)return`upload`;if(t===R)return`raw`;if(t===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 t.ZodError?new Oe(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 qe))&&(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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