@discoveryjs/discovery
Version:
Frontend framework for rapid data (JSON) analysis, shareable serverless reports and dashboards
2 lines (1 loc) • 29.9 kB
JavaScript
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xt(e,t),i=a(s.readUint8());if(s.pos!==e.byteLength)throw new Error("End of input is not reached");return i}var J=Object.freeze({name:"jsonxl/snapshot9",test:de,streaming:!1,decode:pe});var me=[{name:"gzip",test:e=>e[0]===31&&e[1]===139&&e[2]===8,createTransformStream:()=>new DecompressionStream("gzip")},{name:"zlib",test:e=>(e[0]&15)===8&&e[0]>>4<=7&&(e[0]<<8|e[1])%31===0,createTransformStream:()=>new DecompressionStream("deflate")}];function vt(e){return e.reduce((t,r)=>t+r.byteLength,0)}function Et(e,t){switch(e.length){case 0:return;case 1:return e[0];default:{let r=new Uint8Array(t||vt(e)),n=0;for(let a of e)r.set(a,n),n+=a.length;return r}}}async function ye(e){let t=[],r=0;for await(let n of e)t.push(n),r+=n.byteLength;return Et(t,r)}function At(e,t){if(typeof e!="string"){for(let r of t)if(r.test(e))return r}return null}var R=class{#r;#e;#t;#n;constructor(t,r){this.#r=t,this.#e=r,this.#t=null,this.#n=null}transform(t,r){if(this.#n===null){let n=At(t,this.#r);if(n===null)this.#n=Promise.resolve();else{let{readable:a,writable:s}=n.createTransformStream();this.#t=s.getWriter(),this.#n=a.pipeTo(new WritableStream({write(i){r.enqueue(i)},close(){r.terminate()},abort(i){r.error(i)}})),typeof this.#e=="function"&&this.#e(n.name)}}if(this.#t!==null)return this.#t.write(t);r.enqueue(t)}async flush(){this.#t!==null&&(this.#t.close(),this.#t=null),this.#n!==null&&(await this.#n,this.#n=null)}},Ct=1024*1024/4,V=class{#r;#e;#t;constructor(t,r=Ct){this.#r=t,this.#e="",this.#t=r}async transform(t,r){if(typeof this.#e!="string"&&await this.#s(r),typeof t=="string"){if(this.#e+=t,this.#n>=this.#t)return this.#s(r)}else this.#e=t,await this.#s(r)}async flush(t){await this.#s(t),await this.#r(!0)}get#n(){return this.#e.length}async#s(t){let r=this.#e;if(this.#n!==0){this.#e="";for(let n=0;n<r.length;){let a=n===0&&r.length-n<this.#t*1.5?r:r.slice(n,n+this.#t);t.enqueue(a),n+=a.length,await this.#r(!1,a.length)}}}};var z={stream:Rt,event:Vt,file:be,url:zt,push:Ft};function Dt(e){try{return new URL(e,location.origin).origin===location.origin}catch{return!1}}function Lt(e){return e.ok}function Pt(e){return e.headers.get("x-file-encoded-size")||e.headers.get("content-length")}function Ot(e){return e.headers.get("x-file-size")||(Dt(e.url)&&!e.headers.get("content-encoding")?e.headers.get("content-length"):void 0)}function Nt(e){return e.headers.get("x-file-created-at")||e.headers.get("last-modified")||void 0}function Ut(e){let t=e?Object.keys(e):[],r=["name","createdAt","elapsedTime","data"];return!(t.length!==4||t.some(n=>!r.includes(n)))}function jt(e,t,{size:r,compression:n,encoding:a}){let s=null;if(Ut(e)){let{data:p,...f}=e;e=p,t={...t,createdAt:p.createdAt},s=f}let i=e,l=s||{},{type:c,name:o,encoding:u,size:h,encodedSize:g,createdAt:d,...m}=t||{};return{resource:{type:c||"unknown",name:o||"unknown",compression:n,encoding:a,...Number.isFinite(r)?{size:r}:null,...Number.isFinite(g)?{encodedSize:g}:null,createdAt:new Date((typeof d=="string"?Date.parse(d):d)||Date.now()),...m},meta:l,data:i}}async function It(e,t,r,n){let a=Date.now(),s=[...re(t),J,$],i=0,l=!1,c="unknown",o=0;await n("receiving",g(!1));let h=e.pipeThrough(new TransformStream(new V(d))).pipeThrough(new TransformStream(new R(me,p=>l=p))).getReader();try{let p=await h.read(),{value:f,done:b}=p;if(b)throw new Error("Empty payload");for(let{name:S,test:w,streaming:v,decode:k}of s)if(w(f)){c=S;let x=m(h,p);return{data:await(v?k(x):ye(x).then(y(k))),compression:l,encoding:c,size:o,decodingTime:i}}throw new Error("No matched encoding found for the payload")}finally{h.releaseLock()}function g(p){return{done:p,elapsed:Date.now()-a,units:"bytes",completed:o,total:r}}async function d(p,f=0){o+=f,await n("receiving",g(p))}async function*m(p,f){for(;;){let{value:b,done:S}=f||await p.read();if(f=void 0,S)break;let w=performance.now();yield b,i+=performance.now()-w}}function y(p){return async f=>{await n("decoding",void 0,c);let b=performance.now();try{return await p(f)}finally{i=performance.now()-b}}}}async function Mt(e,t){try{await t.asyncSet({stage:"request"});let r=new Date,{method:n,stream:a,resource:s,options:i,data:l}=await e(),c=new Date,o=s?.size,{encodings:u}=i||{},{data:h,compression:g=!1,encoding:d="unknown",size:m=void 0,decodingTime:y=0}=l?{data:l}:await It(a,u,Number(o)||0,(k,x,Q)=>t.asyncSet({stage:k,progress:x,step:Q}));await t.asyncSet({stage:"received"});let{data:p,resource:f,meta:b}=jt(h,s,{size:m,compression:g,encoding:d}),S=new Date,w=Number(S)-Number(r),v=Math.round(y||0);return{loadMethod:n,resource:f,meta:b,data:p,timings:{time:w,start:r,end:S,loadingTime:w-v,decodingTime:v,requestTime:Number(c)-Number(r),requestStart:r,requestEnd:c,responseTime:Number(S)-Number(c),responseStart:c,responseEnd:S}}}catch(r){throw console.error("[Discovery] Error loading data:",r),await t.asyncSet({stage:"error",error:r}),r}}function F(e,t){let r=new E({stage:"inited"});return{state:r,dataset:e(r),...t}}function B(e){return t=>Mt(e,t)}function Rt(e,t){return F(B(()=>({method:"stream",stream:e,resource:t?.resource,options:t})))}function be(e,t){let r=Se(e);return F(B(()=>({method:"file",stream:e.stream(),resource:t?.resource||r,options:t})),{title:"Load data from file: "+(r?.name||"unknown")})}function Vt(e,t){let n=(e.dataTransfer||e.clipboardData||e.target)?.files?.[0];if(e.stopPropagation(),e.preventDefault(),!n)throw new Error("Can't extract a file from an event object");return be(n,t)}function zt(e,t){return t=t||{},F(B(async()=>{let r=await fetch(e,t.fetch),n=Se(r,t);if(n&&r.body)return{method:"fetch",stream:r.body,resource:t.resource||n,options:t};let a=r.headers.get("content-type")||"",s=await r.text();if(a.toLowerCase().startsWith("application/json"))try{let i=JSON.parse(s);s=i.error||i}catch{}throw s=new Error(s),s.isFetchError=!0,s.status=r.status,s.statusText=r.statusText,s.stack=null,s}),{title:`Load data from url: ${e}`})}function Ft(e){let t,r=new ReadableStream({start(i){t=i},cancel(){t=null}}),n,a=null,s=new Promise(i=>{n=l=>i({method:"push",stream:r,resource:l?a=l:e?.resource,options:e})});return e=e||{},F(B(()=>s),{start(i){n(i)},push(i){n(),t?.enqueue(i)},finish(i){t?.close(),t=null,i!==void 0&&isFinite(i)&&a!==null&&(a.encodedSize=Number(i)),a=null}})}function we({dataset:e,state:t},r){return new Promise((n,a)=>t.subscribeSync(async(s,i)=>{if(s.stage==="error"){i(),a(s.error);return}let{stage:l,progress:c,step:o}=s;await r.setState({stage:l,progress:c},o),l==="received"&&(i(),n(e))}))}function Se(e,t){if(e instanceof Response){let r=t?.isResponseOk||Lt,n=t?.getContentSize||Ot,a=t?.getContentEncodedSize||Pt,s=t?.getContentCreatedAt||Nt;if(r(e))return{type:"url",name:e.url,size:Number(n(e))||null,encodedSize:Number(a(e)),createdAt:s(e)}}if(e instanceof File)return{type:"file",name:e.name,size:e.size,createdAt:e.lastModified};if(e instanceof Blob)return{size:e.size};if(ArrayBuffer.isView(e))return{size:e.byteLength};if(typeof e=="string")return{size:e.length}}var ve={inited:{value:0,duration:0,title:"Init"},request:{value:0,duration:.1,title:"Awaiting data"},receiving:{value:.1,duration:.8,title:"Receiving data"},decoding:{value:.9,duration:.015,title:"Decoding data"},received:{value:.915,duration:.01,title:"Await app ready"},prepare:{value:.925,duration:.055,title:"Processing data (prepare)"},initui:{value:.98,duration:.02,title:"Rendering UI"},done:{value:1,duration:0,title:"Done!"},error:{value:1,duration:0,title:"Error"}},Bt=e=>e|0,ke=e=>typeof e=="function"?e:()=>{},xe=e=>new Promise(t=>setTimeout(t,e)),Ht=async()=>{if(!document.hidden)return Promise.race([new Promise(requestAnimationFrame).then(()=>xe(0)),xe(12)])};function Te(e,t,r){let{value:n,title:a,duration:s}=ve[e],i=0,l=null;if(t){let{done:c,elapsed:o,units:u,completed:h,total:g}=t;g?(i=c?1:h/g,l=u==="bytes"?Math.round(i*100)+"%":`${h}/${g}`):(i=c?1:.1+Math.min(.9,o/2e4),l=u==="bytes"?(h/(1024*1024)).toFixed(1)+"MB":String(h))}return{stageTitle:a,progressValue:n+i*s,progressText:l,stepText:r||"",title:l?`${a} (${l})${r?":":"..."}`:e!=="done"?`${a}${r?":":"..."}`:a}}var H=class extends E{startTime;lastStageStartTime;awaitRepaintPenaltyTime;finished;awaitRepaint;timings;onTiming;onFinish;appearanceDelay;domReady;el;#r;#e;constructor({onTiming:t,onFinish:r,domReady:n}){super({stage:"inited",progress:null,error:null}),this.startTime=null,this.lastStageStartTime=null,this.awaitRepaintPenaltyTime=0,this.finished=!1,this.awaitRepaint=null,this.timings=[],this.onTiming=ke(t),this.onFinish=ke(r),this.domReady=n||Promise.resolve(),this.el=T("div","view-progress skip-fast-track",[T("div","content main-secondary",[this.#r=T("span","main"),this.#e=T("span","secondary")]),T("div","progress")])}recordTiming(t,r,n=performance.now()){let a={stage:t,title:ve[t].title,duration:Bt(n-r)};this.lastStageStartTime=n,this.timings.push(a),this.onTiming(a)}async#t(t=!1,r=performance.now()){let n=r-(this.awaitRepaint||0),a=r-(this.lastStageStartTime||0);if(t||n>65&&a>200){let s=performance.now();await Ht(),this.awaitRepaintPenaltyTime+=performance.now()-s,this.awaitRepaint=performance.now()}}async setState(t,r){let n=this.value.stage,{stage:a=n,progress:s=null,error:i=null}=t;if(this.finished)return;if(i){this.set("stage"in t?{stage:a,progress:s,error:i}:{...this.value,error:i}),this.finish(i);return}this.set({stage:a,progress:s,error:i});let l=a!==n,c=performance.now();n==="inited"&&(this.startTime=c),l&&(this.lastStageStartTime!==null&&this.recordTiming(n,this.lastStageStartTime,c),this.lastStageStartTime=c,this.awaitRepaint=c);let{title:o,stepText:u,progressValue:h}=Te(a,s,r);this.el.style.setProperty("--progress",String(h)),this.#r.textContent=o,this.#e.textContent=u,this.el.offsetWidth,await this.#t(l,c)}async setStateStep(t){let{title:r,stepText:n}=Te(this.value.stage,this.value.progress,t);this.#r.textContent=r,this.#e.textContent=n,this.el.offsetWidth,await this.#t(!0)}finish(t){this.finished||(this.finished=!0,this.lastStageStartTime!==null&&this.recordTiming(this.value.stage,this.lastStageStartTime),this.recordTiming(t?"error":"done",this.startTime||this.lastStageStartTime||performance.now()),this.set({stage:"done",progress:null,error:t||null}),this.onFinish(Object.assign([...this.timings],{awaitRepaintPenaltyTime:Math.round(this.awaitRepaintPenaltyTime)})),this.el.classList.add("done"),this.el.classList.toggle("error",!!t))}dispose(){this.finish(),this.el.remove()}};function qt(e){return new H({domReady:e,onTiming:({title:t,duration:r})=>console.log(`[Discovery/preloader] ${t} \u2013 ${r}ms`)})}function _t(e){if(e&&!O(z,e))throw new Error(`dataSource "${e}" is not supported`)}function $t(e,t,r){let{darkmode:n,darkmodePersistent:a,colorScheme:s=n,colorSchemePersistent:i=a}=r,l=N(s,i);ee(t,l)&&e.setAttribute("darkmode","")}Kt.colorScheme=!0;function Kt(e){e=e||{};let t=e.container||document.body,r=document.createElement("div"),n=r.attachShadow({mode:"open"}),a=e.dataSource;_t(a),$t(r,t,e);let s=e.data,i=s?a==="push"?z.push(e.loadDataOptions):z[a||"url"](e.data,e.loadDataOptions):{dataset:Promise.resolve(),state:void 0};if(s&&a==="push"){let{start:u,push:h,finish:g}=i;globalThis.discoveryLoader={start:u,push:h,finish(...d){delete globalThis.discoveryLoader,g(...d)}}}let l=te(n,e.styles),c=e.progressbar||qt(l),o=e.embed?Wt(i.state):()=>{};return i.state&&we(i,c).catch(()=>{}),n.append(c.el),t.append(r),Object.assign(i.dataset,{el:r,shadowRoot:n,progressbar:c,disposeEmbed:o})}function Wt(e){let t=G(),r=window.parent,n=[],a=(c,o)=>{let u={from:"discoveryjs-app",id:t,type:c,payload:o};r.postMessage(u,"*")},s=()=>a("destroy",null),i=c=>{let{id:o,type:u}=c.data||{};if(o===t)switch(u){case"defineAction":case"setPageHash":case"setRouterPreventLocationUpdate":{n.push(c.data);break}default:console.error(`[Discovery/preloader] Unknown preload message type "${u}"`)}};if(r===window)return;addEventListener("message",i,!1),addEventListener("unload",s,!1),a("preinit",{page:{hash:location.hash||"#"}});let l=e?e.subscribeSync(c=>{let{stage:o}=c;return(o==="error"||o==="received")&&l(),a("loadingState",c)}):()=>{};return()=>(removeEventListener("message",i,!1),removeEventListener("unload",s,!1),l(),s(),{hostId:t,postponeMessages:n})}export{Kt as preloader};