Add katex support

build.mjs

@@ -1,11 +1,11 @@
 import archiver from 'archiver'
 import esbuild from 'esbuild'
-import fs, { promises as fsPromises } from 'fs'
-
+import fs from 'fs-extra'
+import { lessLoader } from 'esbuild-plugin-less'
 const outdir = 'build'
 
 async function deleteOldDir() {
-  await fsPromises.rm(outdir, { recursive: true, force: true })
+  await fs.rm(outdir, { recursive: true, force: true })
 }
 
 async function runEsbuild() {
@@ -25,6 +25,13 @@ async function runEsbuild() {
     jsxFactory: 'h',
     jsxFragment: 'Fragment',
     jsx: 'automatic',
+    loader: {
+      '.ttf': 'dataurl',
+      '.woff': 'dataurl',
+      '.woff2': 'dataurl',
+      '.less': 'css',
+    },
+    plugins: [lessLoader()],
   })
 }
 
@@ -39,10 +46,10 @@ async function zipFolder(dir) {
 }
 
 async function copyFiles(entryPoints, targetDir) {
-  await fsPromises.mkdir(targetDir)
+  await fs.mkdir(targetDir)
   await Promise.all(
     entryPoints.map(async (entryPoint) => {
-      await fsPromises.copyFile(entryPoint.src, `${targetDir}/${entryPoint.dst}`)
+      await fs.copy(entryPoint.src, `${targetDir}/${entryPoint.dst}`)
     }),
   )
 }