feat: use go tool

node_modules/micromark-extension-math/dev/lib/html.js

@@ -0,0 +1,82 @@
+/**
+ * @import {HtmlOptions as Options} from 'micromark-extension-math'
+ * @import {HtmlExtension} from 'micromark-util-types'
+ */
+
+import katex from 'katex'
+
+const renderToString = katex.renderToString
+
+/**
+ * Create an extension for `micromark` to support math when serializing to
+ * HTML.
+ *
+ * > 👉 **Note**: this uses KaTeX to render math.
+ *
+ * @param {Options | null | undefined} [options={}]
+ *   Configuration (default: `{}`).
+ * @returns {HtmlExtension}
+ *   Extension for `micromark` that can be passed in `htmlExtensions`, to
+ *   support math when serializing to HTML.
+ */
+export function mathHtml(options) {
+  return {
+    enter: {
+      mathFlow() {
+        this.lineEndingIfNeeded()
+        this.tag('<div class="math math-display">')
+      },
+      mathFlowFenceMeta() {
+        this.buffer()
+      },
+      mathText() {
+        // Double?
+        this.tag('<span class="math math-inline">')
+        this.buffer()
+      }
+    },
+    exit: {
+      mathFlow() {
+        const value = this.resume()
+        this.tag(math(value.replace(/(?:\r?\n|\r)$/, ''), true))
+        this.tag('</div>')
+        this.setData('mathFlowOpen')
+        this.setData('slurpOneLineEnding')
+      },
+      mathFlowFence() {
+        // After the first fence.
+        if (!this.getData('mathFlowOpen')) {
+          this.setData('mathFlowOpen', true)
+          this.setData('slurpOneLineEnding', true)
+          this.buffer()
+        }
+      },
+      mathFlowFenceMeta() {
+        this.resume()
+      },
+      mathFlowValue(token) {
+        this.raw(this.sliceSerialize(token))
+      },
+      mathText() {
+        const value = this.resume()
+        this.tag(math(value, false))
+        this.tag('</span>')
+      },
+      mathTextData(token) {
+        this.raw(this.sliceSerialize(token))
+      }
+    }
+  }
+
+  /**
+   * @param {string} value
+   *   Math text.
+   * @param {boolean} displayMode
+   *   Whether the math is in display mode.
+   * @returns {string}
+   *   HTML.
+   */
+  function math(value, displayMode) {
+    return renderToString(value, {...options, displayMode})
+  }
+}