@minisylar/express-typed-router/dist/schema-router.mjs

A strongly-typed Express router with Zod validation and automatic type inference for params, body, query, and middleware

import e from"express";import{SchemaError as t}from"@standard-schema/utils";function n(e,n){let r=e;if(r&&r[`~standard`]&&typeof r[`~standard`].validate==`function`){let e=r[`~standard`].validate(n);if(e instanceof Promise)throw TypeError(`Async schema validation is not supported by parseSchema`);if(e.issues)throw new t(e.issues);return e.value}throw TypeError(`Unsupported schema shape for parseSchema`)}function r(e,t){let n=e;if(n&&n[`~standard`]&&typeof n[`~standard`].validate==`function`)return n[`~standard`].validate(t);if(n&&typeof n.safeParse==`function`)return n.safeParse(t);if(n&&typeof n.parse==`function`)try{return{value:n.parse(t)}}catch(e){return{issues:[{message:e?.message??String(e)}]}}if(n&&typeof n.validate==`function`){let e=n.validate(t);return e&&e.then&&typeof e.then==`function`?e.then(e=>e.error?{issues:[{message:e.error.message}]}:e.issues?{issues:e.issues}:{value:e.value??e}):e&&e.error?{issues:[{message:e.error.message}]}:e&&e.issues?{issues:e.issues}:{value:e.value??e}}return{issues:[{message:`Unsupported schema shape`}]}}function i(e){return typeof e==`object`&&!!e&&`issues`in e&&Array.isArray(e.issues)}const a=Function(`m`,`return import(m)`);let o,s;async function c(e){try{o??=await a(`module`),s??=await a(`url`);let t=globalThis.process?.cwd?.()??``,n=o.createRequire(s.pathToFileURL(t+`/`).href).resolve(e);return a(s.pathToFileURL(n).href)}catch{return a(e)}}const l=new WeakMap;function u(e){return e.replace(/\{([^{}]*)\}/g,`$1`).replace(/:([A-Za-z0-9_]+)(?:\([^)]*\))?[?+*]?/g,`{$1}`).replace(/\/{2,}/g,`/`)}function d(e){return[...e.replace(/\{([^{}]*)\}/g,`$1`).matchAll(/:([A-Za-z0-9_]+)/g)].map(e=>e[1])}function f(e){return e.replace(/[{}]/g,``).split(`/`).filter(Boolean).find(e=>!e.startsWith(`:`)&&!e.startsWith(`*`))??`default`}function p(e,t){let n=t.replace(/[{}]/g,``).split(`/`).filter(e=>e&&!e.startsWith(`:`)&&!e.startsWith(`*`)),r=n[n.length-1]??`resource`;return`${{get:`Get`,post:`Create`,put:`Update`,patch:`Patch`,delete:`Delete`,head:`Head`,options:`Options`}[e]??e} ${r}`}async function m(e){let t=l.get(e);if(t)return t;let n=await h(e);return l.set(e,n),n}async function h(e){if(typeof e.toJsonSchema==`function`)try{return e.toJsonSchema()}catch{}let t=e[`~standard`]?.vendor;if(t===`zod`){try{let t=await c(`zod`);if(typeof t.toJSONSchema==`function`)return t.toJSONSchema(e)}catch{}try{let t=await c(`zod-to-json-schema`),n=t.zodToJsonSchema??t.default?.zodToJsonSchema;if(typeof n==`function`)return n(e)}catch{}}if(t===`valibot`)try{let t=await c(`@valibot/to-json-schema`),n=t.toJsonSchema??t.default?.toJsonSchema;if(typeof n==`function`)return n(e)}catch{}if(t===`effect`)try{let t=await c(`effect`),n=t.JSONSchema?.make??t.default?.JSONSchema?.make;if(typeof n==`function`)return n(e)}catch{}return{}}function g(e){return _(e,0,new WeakSet)}function _(e,t,n){if(e==null)return{type:`null`};if(t>=12)return{};if(e instanceof Date)return{type:`string`,format:`date-time`};if(typeof e==`bigint`)return{type:`integer`};if(typeof e==`object`&&typeof e.toJSON==`function`)return _(e.toJSON(),t,n);if(Array.isArray(e)){if(e.length===0||n.has(e))return{type:`array`,items:{}};n.add(e);let r=Math.min(e.length,20),i=_(e[0],t+1,n);for(let a=1;a<r;a++)i=b(i,_(e[a],t+1,n));return n.delete(e),{type:`array`,items:i}}switch(typeof e){case`string`:return{type:`string`};case`boolean`:return{type:`boolean`};case`number`:return Number.isFinite(e)?{type:Number.isInteger(e)?`integer`:`number`}:{type:`null`};case`object`:{if(n.has(e))return{type:`object`};n.add(e);let r={},i=[];for(let[a,o]of Object.entries(e))typeof o==`function`||o===void 0||(r[a]=_(o,t+1,n),i.push(a));n.delete(e);let a={type:`object`,properties:r};return i.length&&(a.required=i),a}default:return{}}}function v(e){return!e||e.type===void 0?new Set:new Set(Array.isArray(e.type)?e.type:[e.type])}function y(e){e.has(`integer`)&&e.has(`number`)&&e.delete(`integer`);let t=[...e];if(t.length!==0)return t.length===1?t[0]:t}function b(e,t){if(!e||Object.keys(e).length===0)return t??{};if(!t||Object.keys(t).length===0)return e??{};let n=new Set([...v(e),...v(t)]),r={},i=y(n);if(i!==void 0&&(r.type=i),n.has(`object`)&&(e.properties||t.properties)){let n=e.properties??{},i=t.properties??{},a={};for(let e of new Set([...Object.keys(n),...Object.keys(i)]))a[e]=b(n[e],i[e]);r.properties=a;let o=e.required??[],s=t.required??[],c=o.filter(e=>s.includes(e));c.length&&(r.required=c)}if(n.has(`array`)){let n=b(e.items,t.items);n&&Object.keys(n).length&&(r.items=n)}return r}function x(e){return e.replace(/&/g,`&amp;`).replace(/</g,`&lt;`).replace(/>/g,`&gt;`).replace(/"/g,`&quot;`)}const S=`https://cdn.jsdelivr.net/npm/@scalar/api-reference`;function C(e,t,n){return`<!doctype html>
<html>
  <head>
    <title>${x(e)}</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
  </head>
  <body>
    <script id="api-reference" data-url="${x(t)}"><\/script>
    <script src="${x(n)}"><\/script>
  </body>
</html>`}async function w(e,t){let n=Object.create(null);for(let t of e){if(t.method===`all`||t.hidden)continue;let e=u(t.path);n[e]||(n[e]={});let r=d(t.path).map(e=>({name:e,in:`path`,required:!0,schema:{type:`string`}}));if(t.querySchema){let e=await m(t.querySchema),n=e.properties??{},i=e.required??[];for(let[e,t]of Object.entries(n))r.push({name:e,in:`query`,required:i.includes(e),schema:t})}let i={summary:t.summary??p(t.method,t.path),tags:t.tags??[f(t.path)],parameters:r};t.description&&(i.description=t.description),t.deprecated&&(i.deprecated=!0),t.bodySchema&&(i.requestBody={required:!0,content:{"application/json":{schema:await m(t.bodySchema)}}});let a={};for(let[e,n]of t.responseSamples){let t={schema:n.schema};n.example!==void 0&&(t.example=n.example),a[String(e)]={description:e<400?`Success`:`Error`,content:{"application/json":t}}}if(t.responseSchema){let e=await m(t.responseSchema);if(e&&Object.keys(e).length){let n=`200`;for(let e of t.responseSamples.keys())if(e>=200&&e<300){n=String(e);break}a[n]={description:`Success`,content:{"application/json":{schema:e}}}}}Object.keys(a).length===0&&(a[200]={description:`Success`}),i.responses=a,n[e][t.method]=i}return{openapi:`3.1.0`,info:{title:t.title??`API`,version:t.version??`1.0.0`,...t.description?{description:t.description}:{}},...t.servers?{servers:t.servers}:{},paths:n}}const T=new WeakMap;var E=class t{router;routes=[];mountedRouters=[];sampleMode=`off`;scheduleSpecWrite;constructor(){this.router=e.Router(),T.set(this.router,this)}useMiddleware(e){return this.router.use(e),this}getRouter(){return this.router}use(e,...n){let r=typeof e==`string`,i=r?e:``,a=(r?n:[e,...n]).map(e=>{if(e instanceof t)return this.trackMounted(i,e),e.getRouter();let n=T.get(e);return n&&this.trackMounted(i,n),e});return r?this.router.use(e,...a):this.router.use(...a),this}mount(e,t){if(typeof e==`string`){let n=t;this.router.use(e,n.getRouter()),this.trackMounted(e,n)}else this.router.use(e.getRouter()),this.trackMounted(``,e);return this}getRouteMetadata(){let e=this.mountedRouters.flatMap(({prefix:e,router:t})=>t.getRouteMetadata().map(t=>({...t,path:e+t.path})));return[...this.routes,...e]}enableSampling(e=`redacted`,t,n=new Set){if(!n.has(this)){n.add(this),this.sampleMode=e,this.scheduleSpecWrite=t;for(let{router:r}of this.mountedRouters)r.enableSampling(e,t,n)}}trackMounted(e,t){this.mountedRouters.some(n=>n.router===t&&n.prefix===e)||(this.mountedRouters.push({prefix:e,router:t}),this.sampleMode!==`off`&&t.enableSampling(this.sampleMode,this.scheduleSpecWrite))}hydrateResponses(e,t=``,n=new Set){if(n.has(this))return;n.add(this);let r=e?.paths??{};for(let e of this.routes){let n=r[u(t+e.path)]?.[e.method]?.responses;if(n)for(let t of Object.keys(n)){let r=Number(t);if(Number.isNaN(r)||e.responseSamples.has(r))continue;let i=n[t]?.content?.[`application/json`];i?.schema&&e.responseSamples.set(r,i.example===void 0?{schema:i.schema}:{schema:i.schema,example:i.example})}}for(let{prefix:r,router:i}of this.mountedRouters)i.hydrateResponses(e,t+r,n)}docs(t={}){let n=e.Router(),r;if(t.specOutputPath){let e=t.specOutputPath,n=!1,i=!1,o=async()=>{if(n){i=!0;return}n=!0;try{let n=await w(this.getRouteMetadata(),t),r=await a(`fs/promises`),i=e.replace(/[/\\][^/\\]*$/,``);i&&i!==e&&await r.mkdir(i,{recursive:!0}).catch(()=>{});let o=`${e}.${globalThis.process?.pid??`0`}.tmp`;await r.writeFile(o,JSON.stringify(n,null,2),`utf8`),await r.rename(o,e)}catch{}finally{n=!1,i&&(i=!1,o())}},s;r=()=>{s&&clearTimeout(s),s=setTimeout(o,300),s.unref?.()},setImmediate(async()=>{try{let t=await(await a(`fs/promises`)).readFile(e,`utf8`).catch(()=>null);if(t)try{this.hydrateResponses(JSON.parse(t))}catch{}}catch{}await o()})}return t.sampleResponses!==!1&&this.enableSampling(t.sampleResponses===`live`?`live`:`redacted`,r),n.get(`/openapi.json`,async(e,n)=>{try{let e=await w(this.getRouteMetadata(),t);n.json(e)}catch(e){n.status(500).json({error:`Failed to generate spec`,details:String(e)})}}),n.get(`/`,(e,n)=>{let r=`${e.baseUrl}/openapi.json`,i=t.cdnUrl??S;n.setHeader(`Content-Type`,`text/html; charset=utf-8`),n.send(C(t.title??`API`,r,i))}),n}get(e,t,n){return this.registerRoute(`get`,e,t,n)}post(e,t,n){return this.registerRoute(`post`,e,t,n)}put(e,t,n){return this.registerRoute(`put`,e,t,n)}patch(e,t,n){return this.registerRoute(`patch`,e,t,n)}delete(e,t,n){return this.registerRoute(`delete`,e,t,n)}options(e,t,n){return this.registerRoute(`options`,e,t,n)}head(e,t,n){return this.registerRoute(`head`,e,t,n)}all(e,t,n){return this.registerRoute(`all`,e,t,n)}registerRoute(e,t,n,r){let i=[],a={method:e,path:t,responseSamples:new Map};if(this.routes.push(a),typeof n==`object`){let e=n;a.bodySchema=e.bodySchema,a.querySchema=e.querySchema,a.tags=e.tags,a.description=e.description,a.summary=e.summary,a.deprecated=e.deprecated,a.responseSchema=e.responseSchema,a.hidden=e.hidden,e.middleware&&i.push(...e.middleware),e.bodySchema&&i.push(this.createBodyValidationMiddleware(e.bodySchema)),e.querySchema&&i.push(this.createQueryValidationMiddleware(e.querySchema)),i.push(r)}else i.push(n);let o=0,s=(e,t)=>{let n=e.statusCode,r=g(t),i=a.responseSamples.get(n),o=i?b(i.schema,r):r,s=this.sampleMode===`live`?i?.example??t:void 0,c=!i||JSON.stringify(i.schema)!==JSON.stringify(o);a.responseSamples.set(n,{schema:o,example:s}),c&&this.scheduleSpecWrite?.()};return this.router[e](t,(e,t,n)=>{if(this.sampleMode===`off`||a.hidden||o>=50||a.responseSamples.size>=10){n();return}o++;let r=t.json;t.json=function(e){return s(t,e),r.call(this,e)};let i=t.send;t.send=function(e){return typeof e==`object`&&e&&!Buffer.isBuffer(e)&&s(t,e),i.call(this,e)},n()},...i),this}createBodyValidationMiddleware(e){return async(t,n,a)=>{try{let i=r(e,t.body),o=i&&typeof i.then==`function`?await i:i;if(o&&`issues`in o&&o.issues){n.status(400).json({error:`Validation failed`,details:o.errors||o.issues});return}t.body=o&&`value`in o?o.value:o,a()}catch(e){i(e)?n.status(400).json({error:`Validation failed`,details:e.errors||e.issues}):a(e)}}}createQueryValidationMiddleware(e){return async(t,n,a)=>{try{let i=r(e,t.query),o=i&&typeof i.then==`function`?await i:i;if(o&&`issues`in o&&o.issues){n.status(400).json({error:`Validation failed`,details:o.errors||o.issues});return}let s=o&&`value`in o?o.value:o;Object.defineProperty(t,"query",{value:s,writable:!1,enumerable:!0,configurable:!0}),a()}catch(e){i(e)?n.status(400).json({error:`Validation failed`,details:e.errors||e.issues}):a(e)}}}};function D(){return new E}function O(e){let t=new E;return e?.errorHandler&&t.getRouter().use(e.errorHandler),t}function k(...e){let t=new E;for(let n of e)t=t.useMiddleware(n);return t}function A(t,n={}){let r=(Array.isArray(t)?t:[t]).map(e=>`prefix`in e?e:{prefix:``,router:e});if(n.sampleResponses!==!1){let e=n.sampleResponses===`live`?`live`:`redacted`;for(let{router:t}of r)t.enableSampling(e)}let i=e.Router();return i.get(`/openapi.json`,async(e,t)=>{try{let e=await w(r.flatMap(({prefix:e,router:t})=>t.getRouteMetadata().map(t=>({...t,path:e+t.path}))),n);t.json(e)}catch(e){t.status(500).json({error:`Failed to generate spec`,details:String(e)})}}),i.get(`/`,(e,t)=>{let r=`${e.baseUrl}/openapi.json`,i=n.cdnUrl??S;t.setHeader(`Content-Type`,`text/html; charset=utf-8`),t.send(C(n.title??`API`,r,i))}),i}export{E as TypedRouter,A as createDocs,D as createTypedRouter,O as createTypedRouterWithConfig,k as createTypedRouterWithMiddleware,g as inferJsonSchema,i as isSchemaError,n as parseSchema,r as safeParseSchema};