24 lines
705 B
TypeScript
24 lines
705 B
TypeScript
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import * as mfm from "mfm-js";
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import { defaultStore } from "@/store";
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import { expandKaTeXMacro } from "@/scripts/katex-macro";
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export function preprocess(text: string): string {
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if (defaultStore.state.enableCustomKaTeXMacro) {
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const parsedKaTeXMacro = localStorage.getItem("customKaTeXMacroParsed") ?? "{}";
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const maxNumberOfExpansions = 200; // to prevent infinite expansion loops
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let nodes = mfm.parse(text);
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for (let node of nodes) {
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if (node["type"] === "mathInline" || node["type"] === "mathBlock") {
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node["props"]["formula"]
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= expandKaTeXMacro(node["props"]["formula"], parsedKaTeXMacro, maxNumberOfExpansions);
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}
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}
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text = mfm.toString(nodes);
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}
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return text;
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}
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