mathjax/core.js

Beautiful and accessible math in all browsers. MathJax is an open-source JavaScript display engine for LaTeX, MathML, and AsciiMath notation that works in all browsers. This package includes the packaged components (install mathjax-full to get the source

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null===this.display}constructor(t,e,s=!0,i={i:0,n:0,delim:""},r={i:0,n:0,delim:""}){this.root=null,this.typesetRoot=null,this.metrics={},this.inputData={},this.outputData={},this._state=me.UNPROCESSED,this.math=t,this.inputJax=e,this.display=s,this.start=i,this.end=r,this.root=null,this.typesetRoot=null,this.metrics={},this.inputData={},this.outputData={}}render(t){t.renderActions.renderMath(this,t)}rerender(t,e=me.RERENDER){this.state()>=e&&this.state(e-1),t.renderActions.renderMath(this,t,e)}convert(t,e=me.LAST){t.renderActions.renderConvert(this,t,e)}compile(t){this.state()<me.COMPILED&&(this.root=this.inputJax.compile(this,t),this.state(me.COMPILED))}typeset(t){this.state()<me.TYPESET&&(this.typesetRoot=t.outputJax[this.isEscaped?"escaped":"typeset"](this,t),this.state(me.TYPESET))}updateDocument(t){}removeFromDocument(t=!1){this.clear()}setMetrics(t,e,s,i){this.metrics={em:t,ex:e,containerWidth:s,scale:i}}state(t=null,e=!1){return null!=t&&(t<me.INSERTED&&this._state>=me.INSERTED&&this.removeFromDocument(e),t<me.TYPESET&&this._state>=me.TYPESET&&(this.outputData={}),t<me.COMPILED&&this._state>=me.COMPILED&&(this.inputData={}),this._state=t),this._state}reset(t=!1){this.state(me.UNPROCESSED,t)}clear(){}}const me={UNPROCESSED:0,FINDMATH:10,COMPILED:20,CONVERT:100,METRICS:110,RERENDER:125,TYPESET:150,INSERTED:200,LAST:1e4};function ge(t,e){if(t in me)throw Error("State "+t+" already exists");me[t]=e}class Re{constructor(t=null){this.defaultKind="unknown",this.nodeMap=new Map,this.node={},null===t&&(t=this.constructor.defaultNodes);for(const e of Object.keys(t))this.setNodeClass(e,t[e])}create(t,...e){return(this.node[t]||this.node[this.defaultKind])(...e)}setNodeClass(t,e){this.nodeMap.set(t,e);const s=this.nodeMap.get(t);this.node[t]=(...t)=>new s(this,...t)}getNodeClass(t){return this.nodeMap.get(t)}deleteNodeClass(t){this.nodeMap.delete(t),delete this.node[t]}nodeIsKind(t,e){return t instanceof this.getNodeClass(e)}getKinds(){return Array.from(this.nodeMap.keys())}}Re.defaultNodes={};class fe extends Re{create(t,e={},s=[]){return this.node[t](e,s)}}const Le="_inherit_";class be{constructor(t,e){this.global=e,this.defaults=Object.create(e),this.inherited=Object.create(this.defaults),this.attributes=Object.create(this.inherited),Object.assign(this.defaults,t)}set(t,e){this.attributes[t]=e}setList(t){Object.assign(this.attributes,t)}unset(t){delete this.attributes[t]}get(t){let e=this.attributes[t];return e===Le&&(e=this.global[t]),e}getExplicit(t){return this.hasExplicit(t)?this.attributes[t]:void 0}hasExplicit(t){return Object.hasOwn(this.attributes,t)}hasOneOf(t){for(const e of t)if(this.hasExplicit(e))return!0;return!1}getList(...t){const e={};for(const s of t)e[s]=this.get(s);return e}setInherited(t,e){this.inherited[t]=e}getInherited(t){return this.inherited[t]}getDefault(t){return this.defaults[t]}isSet(t){return Object.hasOwn(this.attributes,t)||Object.hasOwn(this.inherited,t)}hasDefault(t){return t in this.defaults}getExplicitNames(){return Object.keys(this.attributes)}getInheritedNames(){return Object.keys(this.inherited)}getDefaultNames(){return Object.keys(this.defaults)}getGlobalNames(){return Object.keys(this.global)}getAllAttributes(){return this.attributes}getAllInherited(){return this.inherited}getAllDefaults(){return this.defaults}getAllGlobals(){return this.global}}class ye{constructor(t,e={},s=[]){this.factory=t,this.parent=null,this.properties={},this.childNodes=[];for(const t of Object.keys(e))this.setProperty(t,e[t]);s.length&&this.setChildren(s)}get kind(){return"unknown"}setProperty(t,e){this.properties[t]=e}getProperty(t){return this.properties[t]}getPropertyNames(){return Object.keys(this.properties)}getAllProperties(){return this.properties}removeProperty(...t){for(const e of t)delete this.properties[e]}isKind(t){return this.factory.nodeIsKind(this,t)}setChildren(t){this.childNodes=[];for(const e of t)this.appendChild(e)}appendChild(t){return this.childNodes.push(t),t.parent=this,t}replaceChild(t,e){const s=this.childIndex(e);return null!==s&&(this.childNodes[s]=t,t.parent=this,e.parent===this&&(e.parent=null)),t}removeChild(t){const e=this.childIndex(t);return null!==e&&(this.childNodes.splice(e,1),t.parent=null),t}childIndex(t){const e=this.childNodes.indexOf(t);return-1===e?null:e}copy(){const t=this.factory.create(this.kind);t.properties=Object.assign({},this.properties);for(const e of this.childNodes||[])e&&t.appendChild(e.copy());return t}findNodes(t){const e=[];return this.walkTree((s=>{s.isKind(t)&&e.push(s)})),e}walkTree(t,e){t(this,e);for(const s of this.childNodes)s&&s.walkTree(t,e);return e}toString(){return this.kind+"("+this.childNodes.join(",")+")"}}class Ne extends ye{setChildren(t){}appendChild(t){return t}replaceChild(t,e){return e}childIndex(t){return null}walkTree(t,e){return t(this,e),e}toString(){return this.kind}}const xe={ORD:0,OP:1,BIN:2,REL:3,OPEN:4,CLOSE:5,PUNCT:6,INNER:7,NONE:-1},Ie=["ORD","OP","BIN","REL","OPEN","CLOSE","PUNCT","INNER"],Te=["","thinmathspace","mediummathspace","thickmathspace"],Ce=[[0,-1,2,3,0,0,0,1],[-1,-1,0,3,0,0,0,1],[2,2,0,0,2,0,0,2],[3,3,0,0,3,0,0,3],[0,0,0,0,0,0,0,0],[0,-1,2,3,0,0,0,1],[1,1,0,1,1,1,1,1],[1,-1,2,3,1,0,1,1]],De=new Set(["normal","bold","italic","bold-italic","double-struck","fraktur","bold-fraktur","script","bold-script","sans-serif","bold-sans-serif","sans-serif-italic","sans-serif-bold-italic","monospace","inital","tailed","looped","stretched"]),Oe=["indentalign","indentalignfirst","indentshift","indentshiftfirst"];class ve extends ye{constructor(t,e={},s=[]){super(t),this.prevClass=null,this.prevLevel=null,this.texclass=null,this.arity<0&&(this.childNodes=[t.create("inferredMrow")],this.childNodes[0].parent=this),this.setChildren(s),this.attributes=new be(t.getNodeClass(this.kind).defaults,t.getNodeClass("math").defaults),this.attributes.setList(e)}copy(t=!1){const e=this.factory.create(this.kind);if(e.properties=Object.assign({},this.properties),this.attributes){const s=this.attributes.getAllAttributes();for(const i of Object.keys(s))("id"!==i||t)&&e.attributes.set(i,s[i])}if(this.childNodes&&this.childNodes.length){let t=this.childNodes;1===t.length&&t[0].isInferred&&(t=t[0].childNodes);for(const s of t)s?e.appendChild(s.copy()):e.childNodes.push(null)}return e}get texClass(){return this.texclass}set texClass(t){this.texclass=t}get isToken(){return!1}get isEmbellished(){return!1}get isSpacelike(){return!1}get linebreakContainer(){return!1}get linebreakAlign(){return"data-align"}get arity(){return 1/0}get isInferred(){return!1}get Parent(){let t=this.parent;for(;t&&t.notParent;)t=t.Parent;return t}get notParent(){return!1}setChildren(t){return this.arity<0?this.childNodes[0].setChildren(t):super.setChildren(t)}appendChild(t){if(this.arity<0)return this.childNodes[0].appendChild(t),t;if(t.isInferred){if(this.arity===1/0)return t.childNodes.forEach((t=>super.appendChild(t))),t;const e=t;(t=this.factory.create("mrow")).setChildren(e.childNodes),t.attributes=e.attributes;for(const s of e.getPropertyNames())t.setProperty(s,e.getProperty(s))}return super.appendChild(t)}replaceChild(t,e){return this.arity<0?(this.childNodes[0].replaceChild(t,e),t):super.replaceChild(t,e)}core(){return this}coreMO(){return this}coreIndex(){return 0}childPosition(){let t=null,e=this.parent;for(;e&&e.notParent;)t=e,e=e.parent;if(t=t||this,e){let s=0;for(const i of e.childNodes){if(i===t)return s;s++}}return null}setTeXclass(t){return this.getPrevClass(t),null!=this.texClass?this:t}updateTeXclass(t){t&&(this.prevClass=t.prevClass,this.prevLevel=t.prevLevel,t.prevClass=t.prevLevel=null,this.texClass=t.texClass)}getPrevClass(t){t&&(this.prevClass=t.texClass,this.prevLevel=t.attributes.get("scriptlevel"))}texSpacing(){const t=null!=this.prevClass?this.prevClass:xe.NONE,e=this.texClass||xe.ORD;if(t===xe.NONE||e===xe.NONE)return"";const s=Ce[t][e];return(this.prevLevel>0||this.attributes.get("scriptlevel")>0)&&s>=0?"":Te[Math.abs(s)]}hasSpacingAttributes(){return this.isEmbellished&&this.coreMO().hasSpacingAttributes()}setInheritedAttributes(t={},e=!1,s=0,i=!1){var r,n,o;const a=this.attributes.getAllDefaults();for(const e of Object.keys(t)){if(Object.hasOwn(a,e)||Object.hasOwn(ve.alwaysInherit,e)){const[s,i]=t[e];(null===(n=null===(r=ve.noInherit[s])||void 0===r?void 0:r[this.kind])||void 0===n?void 0:n[e])||this.attributes.setInherited(e,i)}(null===(o=ve.stopInherit[this.kind])||void 0===o?void 0:o[e])&&delete(t=Object.assign({},t))[e]}void 0===this.attributes.getExplicit("displaystyle")&&this.attributes.setInherited("displaystyle",e);void 0===this.attributes.getExplicit("scriptlevel")&&this.attributes.setInherited("scriptlevel",s),i&&this.setProperty("texprimestyle",i);const l=this.arity;if(l>=0&&l!==1/0&&(1===l&&0===this.childNodes.length||1!==l&&this.childNodes.length!==l))if(l<this.childNodes.length)this.childNodes=this.childNodes.slice(0,l);else for(;this.childNodes.length<l;)this.appendChild(this.factory.create("mrow"));if(this.linebreakContainer&&!this.isEmbellished){const e=this.linebreakAlign;if(e){const s=this.attributes.get(e)||"left";t=this.addInheritedAttributes(t,{indentalign:s,indentshift:"0",indentalignfirst:s,indentshiftfirst:"0",indentalignlast:"indentalign",indentshiftlast:"indentshift"})}}this.setChildInheritedAttributes(t,e,s,i)}setChildInheritedAttributes(t,e,s,i){for(const r of this.childNodes)r.setInheritedAttributes(t,e,s,i)}addInheritedAttributes(t,e){const s=Object.assign({},t);for(const t of Object.keys(e))"displaystyle"!==t&&"scriptlevel"!==t&&"style"!==t&&(s[t]=[this.kind,e[t]]);return s}inheritAttributesFrom(t){const e=t.attributes,s=e.get("displaystyle"),i=e.get("scriptlevel"),r=e.isSet("mathsize")?{mathsize:["math",e.get("mathsize")]}:{},n=t.getProperty("texprimestyle")||!1;this.setInheritedAttributes(r,s,i,n)}verifyTree(t=null){if(null===t)return;this.verifyAttributes(t);const e=this.arity;t.checkArity&&e>=0&&e!==1/0&&(1===e&&0===this.childNodes.length||1!==e&&this.childNodes.length!==e)&&this.mError('Wrong number of children for "'+this.kind+'" node',t,!0),this.verifyChildren(t)}verifyAttributes(t){if(t.checkAttributes){const e=this.attributes,s=[];for(const t of e.getExplicitNames())"data-"===t.substring(0,5)||void 0!==e.getDefault(t)||t.match(/^(?:class|style|id|(?:xlink:)?href)$/)||s.push(t);s.length&&this.mError("Unknown attributes for "+this.kind+" node: "+s.join(", "),t)}if(t.checkMathvariants){const e=this.attributes.getExplicit("mathvariant");!e||De.has(e)||this.getProperty("ignore-variant")||this.mError(`Invalid mathvariant: ${e}`,t,!0)}}verifyChildren(t){for(const e of this.childNodes)e.verifyTree(t)}mError(t,e,s=!1){if(this.parent&&this.parent.isKind("merror"))return null;const i=this.factory.create("merror");if(i.attributes.set("data-mjx-message",t),e.fullErrors||s){const s=this.factory.create("mtext"),r=this.factory.create("text");r.setText(e.fullErrors?t:this.kind),s.appendChild(r),i.appendChild(s),this.parent.replaceChild(i,this),e.fullErrors||i.attributes.set("title",t)}else this.parent.replaceChild(i,this),i.appendChild(this);return i}}ve.defaults={mathbackground:Le,mathcolor:Le,mathsize:Le,dir:Le},ve.noInherit={mstyle:{mpadded:{width:!0,height:!0,depth:!0,lspace:!0,voffset:!0},mtable:{width:!0,height:!0,depth:!0,align:!0}},maligngroup:{mrow:{groupalign:!0},mtable:{groupalign:!0}},mtr:{msqrt:{"data-vertical-align":!0},mroot:{"data-vertical-align":!0}},mlabeledtr:{msqrt:{"data-vertical-align":!0},mroot:{"data-vertical-align":!0}}},ve.stopInherit={mtd:{columnalign:!0,rowalign:!0,groupalign:!0}},ve.alwaysInherit={scriptminsize:!0,scriptsizemultiplier:!0,infixlinebreakstyle:!0},ve.verifyDefaults={checkArity:!0,checkAttributes:!1,checkMathvariants:!0,fullErrors:!1,fixMmultiscripts:!0,fixMtables:!0};class Ae extends ve{get isToken(){return!0}getText(){let t="";for(const e of this.childNodes)e instanceof Me?t+=e.getText():"textContent"in e&&(t+=e.textContent());return t}setChildInheritedAttributes(t,e,s,i){for(const r of this.childNodes)r instanceof ve&&r.setInheritedAttributes(t,e,s,i)}walkTree(t,e){t(this,e);for(const s of this.childNodes)s instanceof ve&&s.walkTree(t,e);return e}}Ae.defaults=Object.assign(Object.assign({},ve.defaults),{mathvariant:"normal",mathsize:Le});class Se extends ve{get isSpacelike(){return this.childNodes[0].isSpacelike}get isEmbellished(){return this.childNodes[0].isEmbellished}get arity(){return-1}core(){return this.childNodes[0]}coreMO(){return this.childNodes[0].coreMO()}setTeXclass(t){return t=this.childNodes[0].setTeXclass(t),this.updateTeXclass(this.childNodes[0]),t}}Se.defaults=ve.defaults;class we extends ve{get isEmbellished(){return this.childNodes[0].isEmbellished}core(){return this.childNodes[0]}coreMO(){return this.childNodes[0].coreMO()}setTeXclass(t){this.getPrevClass(t),this.texClass=xe.ORD;const e=this.childNodes[0];let s=null;e&&(this.isEmbellished||e.isKind("mi")?(s=e.setTeXclass(t),this.updateTeXclass(this.core())):e.isKind("TeXAtom")?this.texClass=e.texClass:e.setTeXclass(null));for(const t of this.childNodes.slice(1))t&&t.setTeXclass(null);return s||this}}we.defaults=ve.defaults;class ke extends Ne{get isToken(){return!1}get isEmbellished(){return!1}get isSpacelike(){return!1}get linebreakContainer(){return!1}get linebreakAlign(){return""}get arity(){return 0}get isInferred(){return!1}get notParent(){return!1}get Parent(){return this.parent}get texClass(){return xe.NONE}get prevClass(){return xe.NONE}get prevLevel(){return 0}hasSpacingAttributes(){return!1}get attributes(){return null}core(){return this}coreMO(){return this}coreIndex(){return 0}childPosition(){return 0}setTeXclass(t){return t}texSpacing(){return""}setInheritedAttributes(t,e,s,i){}inheritAttributesFrom(t){}verifyTree(t){}mError(t,e,s=!1){return null}}class Me extends ke{constructor(){super(...arguments),this.text=""}get kind(){return"text"}getText(){return this.text}setText(t){return this.text=t,this}copy(){return this.factory.create(this.kind).setText(this.getText())}toString(){return this.text}}class Pe extends ke{constructor(){super(...arguments),this.xml=null,this.adaptor=null}get kind(){return"XML"}getXML(){return this.xml}setXML(t,e=null){return this.xml=t,this.adaptor=e,this}getSerializedXML(){return this.adaptor.serializeXML(this.xml)}copy(){return this.factory.create(this.kind).setXML(this.adaptor.clone(this.xml))}toString(){return"XML data"}}class Be extends Se{get kind(){return"math"}get linebreakContainer(){return!0}get linebreakAlign(){return""}setChildInheritedAttributes(t,e,s,i){"display"===this.attributes.get("mode")&&this.attributes.setInherited("display","block"),t=this.addInheritedAttributes(t,this.attributes.getAllAttributes()),e=!!this.attributes.get("displaystyle")||!this.attributes.get("displaystyle")&&"block"===this.attributes.get("display"),this.attributes.setInherited("displaystyle",e),s=this.attributes.get("scriptlevel")||this.constructor.defaults.scriptlevel,super.setChildInheritedAttributes(t,e,s,i)}verifyTree(t=null){super.verifyTree(t),this.parent&&this.mError("Improper nesting of math tags",t,!0)}}Be.defaults=Object.assign(Object.assign({},Se.defaults),{mathvariant:"normal",mathsize:"normal",mathcolor:"",mathbackground:"transparent",dir:"ltr",scriptlevel:0,displaystyle:!1,display:"inline",maxwidth:"",overflow:"linebreak",altimg:"","altimg-width":"","altimg-height":"","altimg-valign":"",alttext:"",cdgroup:"",scriptsizemultiplier:1/Math.sqrt(2),scriptminsize:".4em",infixlinebreakstyle:"before",lineleading:"100%",linebreakmultchar:"\u2062",indentshift:"auto",indentalign:"auto",indenttarget:"",indentalignfirst:"indentalign",indentshiftfirst:"indentshift",indentalignlast:"indentalign",indentshiftlast:"indentshift"});class We extends Ae{constructor(){super(...arguments),this.texclass=xe.ORD}get kind(){return"mi"}setInheritedAttributes(t={},e=!1,s=0,i=!1){super.setInheritedAttributes(t,e,s,i);this.getText().match(We.singleCharacter)&&!t.mathvariant&&this.attributes.setInherited("mathvariant","italic")}setTeXclass(t){this.getPrevClass(t);const e=this.getText();return 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