As gitbook-cli is no longer maintained, there is a bug for its required library.
> /usr/local/lib/node_modules/gitbook-cli/node_modules/npm/node_modules/graceful-fs/polyfills.js:287
>       if (cb) cb.apply(this, arguments)
>                  ^
> TypeError: cb.apply is not a function
>     at /usr/local/lib/node_modules/gitbook-cli/node_modules/npm/node_modules/graceful-fs/polyfills.js:287:18
For MacOS, the patch file is:
    /usr/local/lib/node_modules/gitbook-cli/node_modules/npm/node_modules/graceful-fs/polyfills.js
ref:
- https://stackoverflow.com/a/64211387/1276501
- https://github.com/isaacs/node-graceful-fs/commit/168bdb8f0bb3174e8499d4bc5878deead4172c39

--- polyfills.js        2020-11-25 10:50:00.000000000 +0800
+++ polyfills.js        2020-11-25 10:50:10.000000000 +0800
@@ -279,13 +279,21 @@
   if (!orig) return orig
   // Older versions of Node erroneously returned signed integers for
   // uid + gid.
-  return function (target, cb) {
-    return orig.call(fs, target, function (er, stats) {
-      if (!stats) return cb.apply(this, arguments)
+  return function (target, options, cb) {
+    if (typeof options === 'function') {
+      cb = options
+      options = null
+    }
+    function callback(err, stats) {
+      if (!stats && cb) return cb.apply(this, arguments)
       if (stats.uid < 0) stats.uid += 0x100000000
       if (stats.gid < 0) stats.gid += 0x100000000
       if (cb) cb.apply(this, arguments)
-    })
+    }
+    if (options) {
+      return orig.call(fs, target, options, callback);
+    }
+    return orig.call(fs, target, callback);
   }
 }

@@ -293,8 +301,14 @@
   if (!orig) return orig
   // Older versions of Node erroneously returned signed integers for
   // uid + gid.
-  return function (target) {
-    var stats = orig.call(fs, target)
+  return function (target, options) {
+    var stats
+    if (options) {
+      stats = orig.call(fs, target, options)
+    } else {
+      stats = orig.call(fs, target)
+    }
+
     if (stats.uid < 0) stats.uid += 0x100000000
     if (stats.gid < 0) stats.gid += 0x100000000
     return stats;