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Implement math via KaTeX
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8 changed files with 153 additions and 8 deletions
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@ -1,5 +1,6 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<project version="4">
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<component name="JavaScriptLibraryMappings">
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<file url="PROJECT" libraries="{katex}" />
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</component>
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</project>
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@ -12,6 +12,7 @@
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@import "style/light.css";
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@import "style/dark.css";
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</style>
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<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.css" integrity="sha384-n8MVd4RsNIU0tAv4ct0nTaAbDJwPJzDEaqSD1odI+WdtXRGWt2kTvGFasHpSy3SV" crossorigin="anonymous">
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<!-- Templates -->
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<template id="template-landing">
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<style>
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@ -269,6 +270,9 @@
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</style>
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<a class="wikilink"></a>
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</template>
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<template id="template-math">
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<slot name="math-katex">{Math}</slot>
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</template>
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</head>
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<body is="x-browse"></body>
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</html>
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@ -1,6 +1,6 @@
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export {CanvasElement, NodeFileElement, NodeGroupElement, NodeTextElement, EdgeElement} from "./canvas/index.mjs"
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export {MarkdownElement, HashtagElement, WikilinkElement, FrontMatterElement} from "./markdown/index.mjs"
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export {MarkdownElement, HashtagElement, WikilinkElement, FrontMatterElement, MathElement} from "./markdown/index.mjs"
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export {DisplayElement} from "./display.mjs"
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export {VaultElement} from "./vault.mjs"
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export {BrowseElement} from "./browse.mjs"
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export {LandingElement} from "./landing.mjs"
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export {LandingElement} from "./landing.mjs"
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@ -2,3 +2,4 @@ export {MarkdownElement} from "./renderer.mjs"
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export {FrontMatterElement} from "./frontmatter.mjs"
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export {HashtagElement} from "./hashtag.mjs"
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export {WikilinkElement} from "./wikilink.mjs"
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export {MathElement} from "./math.mjs"
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82
src/elements/markdown/math.mjs
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82
src/elements/markdown/math.mjs
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@ -0,0 +1,82 @@
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import {CustomElement} from "../base.mjs";
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import {default as katex} from 'https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.mjs';
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/**
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* Element rendering TeX math.
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*/
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export class MathElement extends CustomElement {
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static get template() {
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return document.getElementById("template-math")
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}
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/**
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* The math to render, obtained from the `document` attribute.
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* @returns {string}
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*/
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get texDocument() {
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return this.getAttribute("document")
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}
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set texDocument(value) {
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this.setAttribute("document", value)
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}
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/**
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* The display mode of the KaTeX element, obtained from the `block` attribute.
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* @returns {boolean} `true` if block, `false` if inline.
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*/
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get isBlock() {
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return this.hasAttribute("block")
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}
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set isBlock(value) {
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if(value) {
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this.setAttribute("block", "")
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}
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else {
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this.removeAttribute("block")
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}
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}
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/**
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* The element displaying the math.
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* Can be recreated with {@link recreateKatexElement}.
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*/
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katexElement
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/**
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* The name of the slot where {@link katexElement} should be placed in.
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* @type {string}
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*/
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static KATEX_ELEMENT_SLOT = "math-katex"
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/**
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* Recreate {@link katexElement} with the current values of {@link texDocument} and {@link isBlock}.
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*/
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recreateKatexElement() {
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if(this.katexElement) {
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this.katexElement.remove()
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this.katexElement = null
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}
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this.katexElement = document.createElement(this.isBlock ? "div" : "span")
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this.katexElement.slot = this.constructor.KATEX_ELEMENT_SLOT
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this.katexElement.classList.add("math")
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this.katexElement.classList.add(this.isBlock ? "math-block" : "math-inline")
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katex.render(
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this.texDocument,
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this.katexElement,
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{
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throwOnError: false,
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globalGroup: true,
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}
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)
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this.appendChild(this.katexElement)
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}
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onConnect() {
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super.onConnect()
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this.recreateKatexElement()
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}
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}
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@ -20,7 +20,7 @@ export class MarkdownElement extends CustomElement {
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name: "frontmatter",
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level: "block",
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start(src) {
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return src.match(/^(-{3,})/)?.index
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return src.match(/(-{3,})/)?.index
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},
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tokenizer(src, _) {
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const match = src.match(/^(-{3,})(.+)?\n((?:.+\n)*)\1\n/)
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@ -42,7 +42,7 @@ export class MarkdownElement extends CustomElement {
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name: "wikilink",
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level: "inline",
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start(src) {
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return src.match(/^\[\[/)?.index
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return src.match(/\[\[/)?.index
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},
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tokenizer(src, _) {
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const match = src.match(/^\[\[([^|\]]+)(?:\|([^\]]+))?]]/)
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@ -63,7 +63,7 @@ export class MarkdownElement extends CustomElement {
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name: "hashtag",
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level: "inline",
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start(src) {
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return src.match(/^#/)?.index
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return src.match(/#/)?.index
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},
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tokenizer(src, _) {
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const match = src.match(/^#([A-Za-z0-9]+)/)
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@ -78,7 +78,48 @@ export class MarkdownElement extends CustomElement {
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renderer(token) {
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return `<x-hashtag tag="${token.tag}"></x-hashtag>`
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}
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}
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},
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{
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name: "mathBlock",
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level: "block",
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start(src) {
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return src.match(/[$][$]/)?.index
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},
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tokenizer(src, _) {
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const match = src.match(/^[$][$](.+?)[$][$]/s)
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if(match) {
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return {
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type: "mathBlock",
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raw: match[0],
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document: match[1],
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}
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}
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},
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renderer(token) {
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return `<x-math document="${token.document}" block></x-math>`
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}
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},
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{
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name: "mathInline",
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level: "inline",
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start(src) {
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return src.match(/[$]/)?.index
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},
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tokenizer(src, _) {
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const match = src.match(/^[$](.+?)[$]/)
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if(match) {
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console.log(match)
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return {
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type: "mathInline",
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raw: match[0],
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document: match[1],
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}
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}
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},
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renderer(token) {
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return `<x-math document="${token.document}"></x-math>`
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}
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},
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]
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})
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@ -11,7 +11,7 @@ import {
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MarkdownElement,
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VaultElement,
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BrowseElement,
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LandingElement,
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LandingElement, MathElement,
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} from "./elements/index.mjs";
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customElements.define("x-landing", LandingElement)
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@ -26,4 +26,5 @@ customElements.define("x-markdown", MarkdownElement)
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customElements.define("x-frontmatter", FrontMatterElement)
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customElements.define("x-hashtag", HashtagElement)
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customElements.define("x-wikilink", WikilinkElement)
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customElements.define("x-browse", BrowseElement, {extends: "body"})
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customElements.define("x-math", MathElement)
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customElements.define("x-browse", BrowseElement, {extends: "body"})
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@ -19,6 +19,7 @@
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--edge-width: 2px;
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--font-text: sans-serif;
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--font-mono: monospace;
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--math-border-width: 1px;
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}
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@media screen {
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@ -65,3 +66,17 @@ svg line {
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stroke: var(--color-node);
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stroke-width: var(--edge-width);
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}
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.math {
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overflow-x: auto;
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}
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.math-inline {
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}
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.math-block {
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margin: 1em 0;
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text-align: center;
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}
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