58 lines
1.5 KiB
TypeScript
58 lines
1.5 KiB
TypeScript
import MarkdownIt from "markdown-it";
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import Token from "markdown-it/lib/token";
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function isHardbreak(token: Token) {
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return (
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token.type === "hardbreak" ||
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(token.type === "text" && token.content === "\\")
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);
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}
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export default function markdownBreakToParagraphs(md: MarkdownIt) {
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// insert a new rule after the "inline" rules are parsed
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md.core.ruler.after("inline", "breaks", (state) => {
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const tokens = state.tokens;
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// work backwards through the tokens and find text that looks like a br
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for (let i = tokens.length - 1; i > 0; i--) {
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const tokenChildren = tokens[i].children || [];
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const matches = tokenChildren.filter(isHardbreak);
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if (matches.length) {
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let token;
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const nodes: Token[] = [];
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const children = tokenChildren.filter((child) => !isHardbreak(child));
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let count = matches.length;
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if (children.length) {
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count++;
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}
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for (let j = 0; j < count; j++) {
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const isLast = j === count - 1;
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token = new Token("paragraph_open", "p", 1);
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nodes.push(token);
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const text = new Token("text", "", 0);
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text.content = "";
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token = new Token("inline", "", 0);
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token.level = 1;
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token.children = isLast ? [text, ...children] : [text];
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token.content = "";
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nodes.push(token);
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token = new Token("paragraph_close", "p", -1);
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nodes.push(token);
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}
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tokens.splice(i - 1, 3, ...nodes);
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}
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}
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return false;
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});
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}
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