leafer-draw/dist/web.min.cjs

**leafer-draw** 是 [leafer-ui](https://github.com/leaferjs/leafer-ui) 的轻量版，体积小巧，移除了交互功能，仅提供绘制元素的功能，适用于绘制海报、插图、图表、动画等场景，或作为框架的底层绘制库。

"use strict";var e,t=require("@leafer/core"),i=require("@leafer-ui/draw");function n(e,t,i,n){return new(i||(i=Promise))(function(a,s){function r(e){try{l(n.next(e))}catch(e){s(e)}}function o(e){try{l(n.throw(e))}catch(e){s(e)}}function l(e){var t;e.done?a(e.value):(t=e.value,t instanceof i?t:new i(function(e){e(t)})).then(r,o)}l((n=n.apply(e,t||[])).next())})}exports.PathNodeHandleType=void 0,(e=exports.PathNodeHandleType||(exports.PathNodeHandleType={}))[e.none=1]="none",e[e.free=2]="free",e[e.mirrorAngle=3]="mirrorAngle",e[e.mirror=4]="mirror","function"==typeof SuppressedError&&SuppressedError;const a=t.Debug.get("LeaferCanvas");class s extends t.LeaferCanvasBase{set zIndex(e){const{style:t}=this.view;t.zIndex=e,this.setAbsolute(this.view)}set childIndex(e){const{view:t,parentView:i}=this;if(t&&i){const n=i.children[e];n?(this.setAbsolute(n),i.insertBefore(t,n)):i.appendChild(n)}}init(){const{config:e}=this,i=e.view||e.canvas;i?this.__createViewFrom(i):this.__createView();const{style:n}=this.view;if(n.display||(n.display="block"),this.parentView=this.view.parentElement,this.parentView){const e=this.parentView.style;e.webkitUserSelect=e.userSelect="none",this.view.classList.add("leafer-canvas-view")}t.Platform.syncDomFont&&!this.parentView&&(n.display="none",document.body&&document.body.appendChild(this.view)),this.__createContext(),this.autoLayout||this.resize(e)}set backgroundColor(e){this.view.style.backgroundColor=e}get backgroundColor(){return this.view.style.backgroundColor}set hittable(e){this.view.style.pointerEvents=e?"auto":"none"}get hittable(){return"none"!==this.view.style.pointerEvents}__createView(){this.view=document.createElement("canvas")}__createViewFrom(e){let i=t.isString(e)?document.getElementById(e):e;if(i)if(i instanceof HTMLCanvasElement)this.view=i;else{let e=i;if(i===window||i===document){const t=document.createElement("div"),{style:i}=t;i.position="absolute",i.top=i.bottom=i.left=i.right="0px",document.body.appendChild(t),e=t}this.__createView();const t=this.view;e.hasChildNodes()&&(this.setAbsolute(t),e.style.position||(e.style.position="relative")),e.appendChild(t)}else a.error(`no id: ${e}`),this.__createView()}setAbsolute(e){const{style:t}=e;t.position="absolute",t.top=t.left="0px"}updateViewSize(){const{width:e,height:t,pixelRatio:i}=this,{style:n}=this.view;n.width=e+"px",n.height=t+"px",this.unreal||(this.view.width=Math.ceil(e*i),this.view.height=Math.ceil(t*i))}updateClientBounds(){this.view.parentElement&&(this.clientBounds=this.view.getBoundingClientRect())}startAutoLayout(e,t){if(this.resizeListener=t,e){if(this.autoBounds=e,this.resizeObserver)return;try{this.resizeObserver=new ResizeObserver(e=>{this.updateClientBounds();for(const t of e)this.checkAutoBounds(t.contentRect)});const e=this.parentView;e?(this.resizeObserver.observe(e),this.checkAutoBounds(e.getBoundingClientRect())):(this.checkAutoBounds(this.view),a.warn("no parent"))}catch(e){this.imitateResizeObserver()}this.stopListenPixelRatio()}else this.listenPixelRatio(),this.unreal&&this.updateViewSize()}imitateResizeObserver(){this.autoLayout&&(this.parentView&&this.checkAutoBounds(this.parentView.getBoundingClientRect()),t.Platform.requestRender(this.imitateResizeObserver.bind(this)))}listenPixelRatio(){this.windowListener||window.addEventListener("resize",this.windowListener=()=>{const e=t.Platform.devicePixelRatio;if(!this.config.pixelRatio&&this.pixelRatio!==e){const{width:t,height:i}=this;this.emitResize({width:t,height:i,pixelRatio:e})}})}stopListenPixelRatio(){this.windowListener&&(window.removeEventListener("resize",this.windowListener),this.windowListener=null)}checkAutoBounds(e){const i=this.view,{x:n,y:a,width:s,height:r}=this.autoBounds.getBoundsFrom(e),o={width:s,height:r,pixelRatio:this.config.pixelRatio?this.pixelRatio:t.Platform.devicePixelRatio};if(!this.isSameSize(o)){const{style:e}=i;e.marginLeft=n+"px",e.marginTop=a+"px",this.emitResize(o)}}stopAutoLayout(){this.autoLayout=!1,this.resizeObserver&&this.resizeObserver.disconnect(),this.resizeListener=this.resizeObserver=null}emitResize(e){const i={};t.DataHelper.copyAttrs(i,this,t.canvasSizeAttrs),this.resize(e),this.resizeListener&&!t.isUndefined(this.width)&&this.resizeListener(new t.ResizeEvent(e,i))}unrealCanvas(){if(!this.unreal&&this.parentView){let e=this.view;e&&e.remove(),e=this.view=document.createElement("div"),this.parentView.appendChild(this.view),e.classList.add("leafer-app-view"),this.unreal=!0}}destroy(){const{view:e}=this;e&&(this.stopAutoLayout(),this.stopListenPixelRatio(),e.parentElement&&e.remove(),super.destroy())}}function r(e,i){t.Platform.origin={createCanvas(e,t){const i=document.createElement("canvas");return i.width=e,i.height=t,i},canvasToDataURL:(e,i,n)=>{const a=t.FileHelper.mimeType(i),s=e.toDataURL(a,n);return"image/bmp"===a?s.replace("image/png;","image/bmp;"):s},canvasToBolb:(e,i,n)=>new Promise(a=>e.toBlob(a,t.FileHelper.mimeType(i),n)),canvasSaveAs:(e,i,n)=>{const a=e.toDataURL(t.FileHelper.mimeType(t.FileHelper.fileType(i)),n);return t.Platform.origin.download(a,i)},download(e,t){return n(this,void 0,void 0,function*(){let i=document.createElement("a");i.href=e,i.download=t,document.body.appendChild(i),i.click(),document.body.removeChild(i)})},loadImage:(e,i,n)=>new Promise((n,a)=>{const s=new t.Platform.origin.Image;i&&(s.setAttribute("crossOrigin",i),s.crossOrigin=i),s.onload=()=>{n(s)},s.onerror=e=>{a(e)},s.src=t.Platform.image.getRealURL(e)}),loadContent(e){return n(this,arguments,void 0,function*(e,t="text"){const i=yield fetch(e);if(!i.ok)throw new Error(`${i.status}`);return yield i[t]()})},Image:Image,PointerEvent:PointerEvent,DragEvent:DragEvent},t.Platform.event={stopDefault(e){e.preventDefault()},stopNow(e){e.stopImmediatePropagation()},stop(e){e.stopPropagation()}},t.Platform.canvas=t.Creator.canvas(),t.Platform.conicGradientSupport=!!t.Platform.canvas.context.createConicGradient}t.canvasPatch(CanvasRenderingContext2D.prototype),t.canvasPatch(Path2D.prototype),Object.assign(t.Creator,{canvas:(e,t)=>new s(e,t),image:e=>new t.LeaferImage(e)}),t.Platform.name="web",t.Platform.isMobile="ontouchstart"in window,t.Platform.requestRender=function(e){window.requestAnimationFrame(e)},t.defineKey(t.Platform,"devicePixelRatio",{get:()=>devicePixelRatio});const{userAgent:o}=navigator;o.indexOf("Firefox")>-1?(t.Platform.intWheelDeltaY=!0,t.Platform.syncDomFont=!0):(/iPhone|iPad|iPod/.test(navigator.userAgent)||/Macintosh/.test(navigator.userAgent)&&/Version\/[\d.]+.*Safari/.test(navigator.userAgent))&&(t.Platform.fullImageShadow=!0),o.indexOf("Windows")>-1?(t.Platform.os="Windows",t.Platform.intWheelDeltaY=!0):o.indexOf("Mac")>-1?t.Platform.os="Mac":o.indexOf("Linux")>-1&&(t.Platform.os="Linux");class l{get childrenChanged(){return this.hasAdd||this.hasRemove||this.hasVisible}get updatedList(){if(this.hasRemove&&this.config.usePartLayout){const e=new t.LeafList;return this.__updatedList.list.forEach(t=>{t.leafer&&e.add(t)}),e}return this.__updatedList}constructor(e,i){this.totalTimes=0,this.config={},this.__updatedList=new t.LeafList,this.target=e,i&&(this.config=t.DataHelper.default(i,this.config)),this.__listenEvents()}start(){this.disabled||(this.running=!0)}stop(){this.running=!1}disable(){this.stop(),this.__removeListenEvents(),this.disabled=!0}update(){this.changed=!0,this.running&&this.target.emit(t.RenderEvent.REQUEST)}__onAttrChange(e){this.config.usePartLayout&&this.__updatedList.add(e.target),this.update()}__onChildEvent(e){this.config.usePartLayout&&(e.type===t.ChildEvent.ADD?(this.hasAdd=!0,this.__pushChild(e.child)):(this.hasRemove=!0,this.__updatedList.add(e.parent))),this.update()}__pushChild(e){this.__updatedList.add(e),e.isBranch&&this.__loopChildren(e)}__loopChildren(e){const{children:t}=e;for(let e=0,i=t.length;e<i;e++)this.__pushChild(t[e])}__onRquestData(){this.target.emitEvent(new t.WatchEvent(t.WatchEvent.DATA,{updatedList:this.updatedList})),this.__updatedList=new t.LeafList,this.totalTimes++,this.changed=this.hasVisible=this.hasRemove=this.hasAdd=!1}__listenEvents(){this.__eventIds=[this.target.on_([[t.PropertyEvent.CHANGE,this.__onAttrChange,this],[[t.ChildEvent.ADD,t.ChildEvent.REMOVE],this.__onChildEvent,this],[t.WatchEvent.REQUEST,this.__onRquestData,this]])]}__removeListenEvents(){this.target.off_(this.__eventIds)}destroy(){this.target&&(this.stop(),this.__removeListenEvents(),this.target=this.__updatedList=null)}}const{updateAllMatrix:d,updateBounds:c,updateChange:h}=t.LeafHelper,{pushAllChildBranch:u,pushAllParent:f}=t.BranchHelper;const{worldBounds:p}=t.LeafBoundsHelper;class g{constructor(e){this.updatedBounds=new t.Bounds,this.beforeBounds=new t.Bounds,this.afterBounds=new t.Bounds,t.isArray(e)&&(e=new t.LeafList(e)),this.updatedList=e}setBefore(){this.beforeBounds.setListWithFn(this.updatedList.list,p)}setAfter(){this.afterBounds.setListWithFn(this.updatedList.list,p),this.updatedBounds.setList([this.beforeBounds,this.afterBounds])}merge(e){this.updatedList.addList(e.updatedList.list),this.beforeBounds.add(e.beforeBounds),this.afterBounds.add(e.afterBounds),this.updatedBounds.add(e.updatedBounds)}destroy(){this.updatedList=null}}const{updateAllMatrix:m,updateAllChange:_}=t.LeafHelper,w=t.Debug.get("Layouter");class y{constructor(e,i){this.totalTimes=0,this.config={usePartLayout:!0},this.__levelList=new t.LeafLevelList,this.target=e,i&&(this.config=t.DataHelper.default(i,this.config)),this.__listenEvents()}start(){this.disabled||(this.running=!0)}stop(){this.running=!1}disable(){this.stop(),this.__removeListenEvents(),this.disabled=!0}layout(){if(this.layouting||!this.running)return;const{target:e}=this;this.times=0;try{e.emit(t.LayoutEvent.START),this.layoutOnce(),e.emitEvent(new t.LayoutEvent(t.LayoutEvent.END,this.layoutedBlocks,this.times))}catch(e){w.error(e)}this.layoutedBlocks=null}layoutAgain(){this.layouting?this.waitAgain=!0:this.layoutOnce()}layoutOnce(){return this.layouting?w.warn("layouting"):this.times>3?w.warn("layout max times"):(this.times++,this.totalTimes++,this.layouting=!0,this.target.emit(t.WatchEvent.REQUEST),this.totalTimes>1&&this.config.usePartLayout?this.partLayout():this.fullLayout(),this.layouting=!1,void(this.waitAgain&&(this.waitAgain=!1,this.layoutOnce())))}partLayout(){var e;if(!(null===(e=this.__updatedList)||void 0===e?void 0:e.length))return;const i=t.Run.start("PartLayout"),{target:n,__updatedList:a}=this,{BEFORE:s,LAYOUT:r,AFTER:o}=t.LayoutEvent,l=this.getBlocks(a);l.forEach(e=>e.setBefore()),n.emitEvent(new t.LayoutEvent(s,l,this.times)),this.extraBlock=null,a.sort(),function(e,t){let i;e.list.forEach(e=>{i=e.__layout,t.without(e)&&!i.proxyZoom&&(i.matrixChanged?(d(e,!0),t.add(e),e.isBranch&&u(e,t),f(e,t)):i.boundsChanged&&(t.add(e),e.isBranch&&(e.__tempNumber=0),f(e,t)))})}(a,this.__levelList),function(e){let t,i,n;e.sort(!0),e.levels.forEach(a=>{t=e.levelMap[a];for(let e=0,a=t.length;e<a;e++){if(i=t[e],i.isBranch&&i.__tempNumber){n=i.children;for(let e=0,t=n.length;e<t;e++)n[e].isBranch||c(n[e])}c(i)}})}(this.__levelList),function(e){e.list.forEach(h)}(a),this.extraBlock&&l.push(this.extraBlock),l.forEach(e=>e.setAfter()),n.emitEvent(new t.LayoutEvent(r,l,this.times)),n.emitEvent(new t.LayoutEvent(o,l,this.times)),this.addBlocks(l),this.__levelList.reset(),this.__updatedList=null,t.Run.end(i)}fullLayout(){const e=t.Run.start("FullLayout"),{target:i}=this,{BEFORE:n,LAYOUT:a,AFTER:s}=t.LayoutEvent,r=this.getBlocks(new t.LeafList(i));i.emitEvent(new t.LayoutEvent(n,r,this.times)),y.fullLayout(i),r.forEach(e=>{e.setAfter()}),i.emitEvent(new t.LayoutEvent(a,r,this.times)),i.emitEvent(new t.LayoutEvent(s,r,this.times)),this.addBlocks(r),t.Run.end(e)}static fullLayout(e){m(e,!0),e.isBranch?t.BranchHelper.updateBounds(e):t.LeafHelper.updateBounds(e),_(e)}addExtra(e){if(!this.__updatedList.has(e)){const{updatedList:t,beforeBounds:i}=this.extraBlock||(this.extraBlock=new g([]));t.length?i.add(e.__world):i.set(e.__world),t.add(e)}}createBlock(e){return new g(e)}getBlocks(e){return[this.createBlock(e)]}addBlocks(e){this.layoutedBlocks?this.layoutedBlocks.push(...e):this.layoutedBlocks=e}__onReceiveWatchData(e){this.__updatedList=e.data.updatedList}__listenEvents(){this.__eventIds=[this.target.on_([[t.LayoutEvent.REQUEST,this.layout,this],[t.LayoutEvent.AGAIN,this.layoutAgain,this],[t.WatchEvent.DATA,this.__onReceiveWatchData,this]])]}__removeListenEvents(){this.target.off_(this.__eventIds)}destroy(){this.target&&(this.stop(),this.__removeListenEvents(),this.target=this.config=null)}}const v=t.Debug.get("Renderer");class x{get needFill(){return!(this.canvas.allowBackgroundColor||!this.config.fill)}constructor(e,i,n){this.FPS=60,this.totalTimes=0,this.times=0,this.config={usePartRender:!0,ceilPartPixel:!0,maxFPS:120},this.frames=[],this.target=e,this.canvas=i,n&&(this.config=t.DataHelper.default(n,this.config)),this.__listenEvents()}start(){this.running=!0,this.update(!1)}stop(){this.running=!1}update(e=!0){this.changed||(this.changed=e),this.requestTime||this.__requestRender()}requestLayout(){this.target.emit(t.LayoutEvent.REQUEST)}checkRender(){if(this.running){const{target:e}=this;e.isApp&&(e.emit(t.RenderEvent.CHILD_START,e),e.children.forEach(e=>{e.renderer.FPS=this.FPS,e.renderer.checkRender()}),e.emit(t.RenderEvent.CHILD_END,e)),this.changed&&this.canvas.view&&this.render(),this.target.emit(t.RenderEvent.NEXT)}}render(e){if(!this.running||!this.canvas.view)return this.update();const{target:i}=this;this.times=0,this.totalBounds=new t.Bounds,v.log(i.innerName,"---\x3e");try{this.emitRender(t.RenderEvent.START),this.renderOnce(e),this.emitRender(t.RenderEvent.END,this.totalBounds),t.ImageManager.clearRecycled()}catch(e){this.rendering=!1,v.error(e)}v.log("-------------|")}renderAgain(){this.rendering?this.waitAgain=!0:this.renderOnce()}renderOnce(e){if(this.rendering)return v.warn("rendering");if(this.times>3)return v.warn("render max times");if(this.times++,this.totalTimes++,this.rendering=!0,this.changed=!1,this.renderBounds=new t.Bounds,this.renderOptions={},e)this.emitRender(t.RenderEvent.BEFORE),e();else{if(this.requestLayout(),this.ignore)return void(this.ignore=this.rendering=!1);this.emitRender(t.RenderEvent.BEFORE),this.config.usePartRender&&this.totalTimes>1?this.partRender():this.fullRender()}this.emitRender(t.RenderEvent.RENDER,this.renderBounds,this.renderOptions),this.emitRender(t.RenderEvent.AFTER,this.renderBounds,this.renderOptions),this.updateBlocks=null,this.rendering=!1,this.waitAgain&&(this.waitAgain=!1,this.renderOnce())}partRender(){const{canvas:e,updateBlocks:t}=this;t&&(this.mergeBlocks(),t.forEach(t=>{e.bounds.hit(t)&&!t.isEmpty()&&this.clipRender(t)}))}clipRender(e){const i=t.Run.start("PartRender"),{canvas:n}=this,a=e.getIntersect(n.bounds),s=new t.Bounds(a);n.save(),a.spread(x.clipSpread).ceil();const{ceilPartPixel:r}=this.config;n.clipWorld(a,r),n.clearWorld(a,r),this.__render(a,s),n.restore(),t.Run.end(i)}fullRender(){const e=t.Run.start("FullRender"),{canvas:i}=this;i.save(),i.clear(),this.__render(i.bounds),i.restore(),t.Run.end(e)}__render(e,i){const{canvas:n,target:a}=this,s=e.includes(a.__world),r=s?{includes:s}:{bounds:e,includes:s};this.needFill&&n.fillWorld(e,this.config.fill),t.Debug.showRepaint&&t.Debug.drawRepaint(n,e),this.config.useCellRender&&(r.cellList=this.getCellList()),t.Platform.render(a,n,r),this.renderBounds=i=i||e,this.renderOptions=r,this.totalBounds.isEmpty()?this.totalBounds=i:this.totalBounds.add(i),n.updateRender(i)}getCellList(){}addBlock(e,t){this.updateBlocks||(this.updateBlocks=[]),this.updateBlocks.push(e)}mergeBlocks(){const{updateBlocks:e}=this;if(e){const i=new t.Bounds;i.setList(e),e.length=0,e.push(i)}}__requestRender(){const e=this.target;if(this.requestTime||!e)return;if(e.parentApp)return e.parentApp.requestRender(!1);this.requestTime=this.frameTime||Date.now();const i=()=>{const e=1e3/((this.frameTime=Date.now())-this.requestTime),{maxFPS:n}=this.config;if(n&&e>n)return t.Platform.requestRender(i);const{frames:a}=this;a.length>30&&a.shift(),a.push(e),this.FPS=Math.round(a.reduce((e,t)=>e+t,0)/a.length),this.requestTime=0,this.checkRender()};t.Platform.requestRender(i)}__onResize(e){if(!this.canvas.unreal){if(e.bigger||!e.samePixelRatio){const{width:i,height:n}=e.old;if(!new t.Bounds(0,0,i,n).includes(this.target.__world)||this.needFill||!e.samePixelRatio)return this.addBlock(this.canvas.bounds),void this.target.forceUpdate("surface")}this.addBlock(new t.Bounds(0,0,1,1)),this.update()}}__onLayoutEnd(e){e.data&&e.data.map(e=>{let t;const{updatedList:i}=e;i&&i.list.some(e=>(t=!e.__world.width||!e.__world.height,t&&(e.isLeafer||v.tip(e.innerName,": empty"),t=!e.isBranch||e.isBranchLeaf),t)),this.addBlock(t?this.canvas.bounds:e.updatedBounds,i)})}emitRender(e,i,n){this.target.emitEvent(new t.RenderEvent(e,this.times,i,n))}__listenEvents(){this.__eventIds=[this.target.on_([[t.RenderEvent.REQUEST,this.update,this],[t.LayoutEvent.END,this.__onLayoutEnd,this],[t.RenderEvent.AGAIN,this.renderAgain,this],[t.ResizeEvent.RESIZE,this.__onResize,this]])]}__removeListenEvents(){this.target.off_(this.__eventIds)}destroy(){this.target&&(this.stop(),this.__removeListenEvents(),this.config={},this.target=this.canvas=null)}}function b(e,t,n){e.__.__font?i.Paint.fillText(e,t,n):e.__.windingRule?t.fill(e.__.windingRule):t.fill()}function P(e,n,a,s,r){const o=a.__;t.isObject(e)?i.Paint.drawStrokesStyle(e,n,!1,a,s,r):(s.setStroke(e,o.__strokeWidth*n,o),s.stroke()),o.__useArrow&&i.Paint.strokeArrow(e,a,s,r)}function E(e,n,a,s,r){const o=a.__;t.isObject(e)?i.Paint.drawStrokesStyle(e,n,!0,a,s,r):(s.setStroke(e,o.__strokeWidth*n,o),i.Paint.drawTextStroke(a,s,r))}function L(e,n,a,s,r){const o=s.getSameCanvas(!0,!0);o.font=a.__.__font,E(e,2,a,o,r),o.blendMode="outside"===n?"destination-out":"destination-in",i.Paint.fillText(a,o,r),o.blendMode="normal",t.LeafHelper.copyCanvasByWorld(a,s,o),o.recycle(a.__nowWorld)}x.clipSpread=10,Object.assign(t.Creator,{watcher:(e,t)=>new l(e,t),layouter:(e,t)=>new y(e,t),renderer:(e,t,i)=>new x(e,t,i),selector:(e,t)=>{},interaction:(e,t,i,n)=>{}}),t.Platform.layout=y.fullLayout,t.Platform.render=function(e,i,n){const a=Object.assign(Object.assign({},n),{topRendering:!0});n.topList=new t.LeafList,e.__render(i,n),n.topList.length&&n.topList.forEach(e=>e.__render(i,a))};const{getSpread:S,copyAndSpread:B,toOuterOf:R,getOuterOf:k,getByMove:C,move:A,getIntersectData:O}=t.BoundsHelper,T={};let I;const{stintSet:M}=t.DataHelper,{hasTransparent:D}=i.ColorConvert;function W(e,n,a){if(!t.isObject(n)||!1===n.visible||0===n.opacity)return;let s;const{boxBounds:r}=a.__layout,{type:o}=n;switch(o){case"image":case"film":case"video":if(!n.url)return;s=i.PaintImage.image(a,e,n,r,!I||!I[n.url]),"image"!==o&&i.PaintImage[o](s);break;case"linear":s=i.PaintGradient.linearGradient(n,r);break;case"radial":s=i.PaintGradient.radialGradient(n,r);break;case"angular":s=i.PaintGradient.conicGradient(n,r);break;case"solid":const{color:l,opacity:d}=n;s={type:o,style:i.ColorConvert.string(l,d)};break;default:t.isUndefined(n.r)||(s={type:"solid",style:i.ColorConvert.string(n)})}if(s&&(s.originPaint=n,t.isString(s.style)&&D(s.style)&&(s.isTransparent=!0),n.style)){if(0===n.style.strokeWidth)return;s.strokeStyle=n.style}return s}const H={compute:function(e,n){const a=n.__,s=[];let r,o,l,d=a.__input[e];t.isArray(d)||(d=[d]),I=i.PaintImage.recycleImage(e,a);for(let 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