1 files changed, 39 insertions, 21 deletions
diff --git a/packages/markdown/marked/docs/demo/worker.js b/packages/markdown/marked/docs/demo/worker.js
index 6a0fa032..5fb5fd86 100644
--- a/packages/markdown/marked/docs/demo/worker.js
+++ b/packages/markdown/marked/docs/demo/worker.js
@@ -1,4 +1,5 @@
 /* globals marked, unfetch, ES6Promise, Promise */ // eslint-disable-line no-redeclare
+
 if (!self.Promise) {
   self.importScripts('https://cdn.jsdelivr.net/npm/es6-promise/dist/es6-promise.js');
   self.Promise = ES6Promise;
@@ -48,38 +49,55 @@ function parse(e) {
     case 'parse':
       var startTime = new Date();
       var lexed = marked.lexer(e.data.markdown, e.data.options);
-      var lexedList = [];
-      for (var i = 0; i < lexed.length; i++) {
-        var lexedLine = [];
-        for (var j in lexed[i]) {
-          lexedLine.push(j + ':' + jsonString(lexed[i][j]));
-        }
-        lexedList.push('{' + lexedLine.join(', ') + '}');
-      }
+      var lexedList = jsonString(lexed);
       var parsed = marked.parser(lexed, e.data.options);
       var endTime = new Date();
-      // setTimeout(function () {
       postMessage({
         task: e.data.task,
-        lexed: lexedList.join('\n'),
+        lexed: lexedList,
         parsed: parsed,
         time: endTime - startTime
       });
-      // }, 10000);
       break;
   }
 }
 
-function jsonString(input) {
-  var output = (input + '')
-    .replace(/\n/g, '\\n')
-    .replace(/\r/g, '\\r')
-    .replace(/\t/g, '\\t')
-    .replace(/\f/g, '\\f')
-    .replace(/[\\"']/g, '\\$&')
-    .replace(/\u0000/g, '\\0');
-  return '"' + output + '"';
-};
+function stringRepeat(char, times) {
+  var s = '';
+  for (var i = 0; i < times; i++) {
+    s += char;
+  }
+  return s;
+}
+
+function jsonString(input, level) {
+  level = level || 0;
+  if (Array.isArray(input)) {
+    if (input.length === 0) {
+      return '[]';
+    }
+    var items = [],
+        i;
+    if (!Array.isArray(input[0]) && typeof input[0] === 'object' && input[0] !== null) {
+      for (i = 0; i < input.length; i++) {
+        items.push(stringRepeat(' ', 2 * level) + jsonString(input[i], level + 1));
+      }
+      return '[\n' + items.join('\n') + '\n]';
+    }
+    for (i = 0; i < input.length; i++) {
+      items.push(jsonString(input[i], level));
+    }
+    return '[' + items.join(', ') + ']';
+  } else if (typeof input === 'object' && input !== null) {
+    var props = [];
+    for (var prop in input) {
+      props.push(prop + ':' + jsonString(input[prop], level));
+    }
+    return '{' + props.join(', ') + '}';
+  } else {
+    return JSON.stringify(input);
+  }
+}
 
 function loadVersion(ver) {
   var promise;